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ACOPS

ADVISORY COMMITTEE ON PROTECTION OF THE SEA

ANNUAL SURVEY OF REPORTED DISCHARGES AND RELEASES ATTRIBUTED TO VESSELS AND OFFSHORE OIL

AND GAS INSTALLATIONS OPERATING IN THE UNITED KINGDOM’S EXCLUSIVE ECONOMIC ZONE (UK EEZ)

2015

Dr Trevor Dixon

A survey conducted on behalf of the Maritime and Coastguard Agency

Cambridge, March 2016

This report has been produced by the Advisory Committee on Protection of the Sea under a contract with the Department for Transport. Any views expressed in this

report are not necessarily those of the Department for Transport.

© Queen's Printer and Controller of HMSO - 2015

All enquiries relating to the copyright in the work should be addressed to HMSO, The Licensing Division, St Clements House, 2-16 Colegate, Norwich, NR3 1BQ.

CONTENTS

Page Number

Summary 1

SECTION 1 Introduction and survey design 3

SECTION 2 Descriptive statistics and trend assessments 5

SECTION 3 Summary of larger discharges (2 tonnes or more) 23

SECTION 4 Enumeration area summary reports: 29

1 North-east England 302 Eastern England 313 Essex & Kent 314 Southern England 32

5 South-west England. 336 Bristol Channel & South Wales 357 Irish Sea 368 Western Scotland 379 Orkney & Shetland Islands 3810 Eastern Scotland 3911 UKCS (Oil and gas installations and vessels) 40

SECTION 5 Quality assurance plan and acknowledgements 43

APPENDIX 1 Summary of reported incidents

APPENDIX 2 Survey questionnaire and accompanying guidelines

_______________________________

Advisory Committee on Protection of the Sea,c/o MCSC,Trinity College (Julian Hunt),Cambridge CB2 1TQ

March 2016

LIST OF FIGURES

FIGURE 1 Annual totals for reported discharges attributed to vessels and offshore oil and gas installations 2000-2015

FIGURE 2 Boundaries of UK Exclusive Economic Zone and individual enumeration areas

FIGURE 3 Locations of reported oil discharges attributed to vessels

LIST OF TABLES

TABLE 1 Total incidents reported by category of pollution and enumeration area for 2014 and 2015

TABLE 2 Total incidents reported and distribution by marine environmental zone and enumeration area

TABLE 3 Amount and extent of reported pollution by enumeration area TABLE 4 Identification of source of pollution and reported type by

enumeration area

TABLE 5 Reported source of pollution by enumeration area

TABLE 6 Details of prosecutions brought by the competent authorities in the United Kingdom during 2015

TABLE 7 Total number of incident reports received from each reporting organisation

SUMMARY

The Maritime and Coastguard Agency (MCA) exercises Central Government's statutory responsibilities for taking action when oil or hazardous and noxious substances emanating from any at-sea activity threatens the United Kingdom or its surrounding waters. As part of its commitment to provide cleaner seas around the United Kingdom, the MCA publishes, via ACOPS, an annual survey of reported discharges and releases attributed to vessels and offshore oil and gas installations operating in the United Kingdom’s Exclusive Economic Zone (UKEEZ). The annual survey results complement historical data and records and enable MCA's Counter Pollution and Response (CPR) team to monitor trends in the number of incidents, the amount of oil and chemicals spilt, the geographical distribution of spills, the sources of pollution and the nature of the pollution.

Following analysis of 1,749 incident reports and supporting information, 671 accidental discharges from vessels and releases from offshore oil and gas installations were identified in the survey area during 2015. An overall reduction of 10.3% was evident in the total number of incidents reported from all sources over the previous year’s total.

A total of 139 vessel-sourced discharges were reported during 2015 which was 7 fewer than the previous year’s total and significantly fewer than the mean annual total of 186 reported discharges between 2000 and 2014.

A total of 531 accidental releases were reported by offshore oil and gas installations operating in the open sea during 2015 representing an 11.6% decrease on the previous year’s total.

Further analysis of these statistics showed that the total of 337 oil releases from offshore oil and gas installations operating in the open sea during 2015 was 51 more than the mean annual total of 286 releases reported between 2000 and 2014. Estimated volumes of releases showed that 72% were less than 5 litres.

The total of 194 non-mineral oil releases by offshore installations during 2015, primarily those involving chemical substances, was 27 fewer than the total recorded during the previous year.

The reported incidents from all sources during 2015 comprised 70% mineral oils, 29% chemicals (including oil-based mud) and 1% other substances (including vegetable and animal oils).

Approximately 85 % of all accidental discharges and releases were reported in the open sea, 13% were in ports and harbours and 2% were across the remaining marine environmental zones. Survey respondents submitted details of a total of 87 incidents involving accidental discharges from vessels and oil rigs operating in ports and harbours

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during 2015 which was 14 fewer compared with the mean annual total of 101 discharges between 2000 and 2014.

Three beach pollution incidents were reported during 2015 which was 4 fewer than the mean annual total of 7 incidents reported between 2000 and 2014. The most extensive incident occurred during October after varying quantities of solidified rancid palm oil residues were washed ashore along a 5-km stretch of shoreline at Hastings. Clearance operations were completed over a 14-day interval. No reports were received of any beach pollution incidents involving mineral oils during 2015.

Estimated volumes of accidental discharges and releases were recorded in 686 incident reports (including ongoing releases), or 94% of the total. The modal class for oil discharges and releases was less than 455 litres but larger estimated volumes of between 456 litres and approximately 25 tonnes were recorded in 5 of the 11 survey enumeration areas. In total, 4% of all oil discharges and releases (including ongoing releases) were greater than 455 litres, when this information was recorded, compared with 6% during the previous year.

The largest oil incident, with an estimated maximum volume of 25 tonnes, occurred after the general cargo vessel Lysblink Seaways (7,409 gt, built 2000) ran aground near Kilchoan in the western entrance to the Sound of Mull on 18 February.

The modal class for chemical incidents was also less than 455 litres but 35 releases, or 17% of the total (including 13 ongoing releases), were of 1 tonne or more. The largest chemical incident involving a release of 45,254.15 kg of Oceanic HW540 v2 was caused by a hydraulics open system SCM failure on the Ninian Central Platform on 18 March.

At least 28 confirmed discharges were attributed to vessel casualties comprising 9 fishing vessels, 7 pleasure craft and workboats, 3 barges, 2 general cargo vessels, 2 tugs, a bunker tanker, a car carrier, a dredger, a tall-ship and a research vessel.

Reporting organisations submitted details of 2 successful prosecutions brought by the Crown Office and Procurator Fiscal Service in Scotland for marine pollution offences. On 1 July 2015 Shell UK Limited pleaded guilty at the Aberdeen Sheriff Court to an unlicensed release of 13.886 tonnes of diesel oil at the Brent Bravo platform on 11 May 2013 and was fined £6,500. On 24 November 2015 Shell UK Limited was fined £22,500 following an unplanned release of 218 tonnes of crude oil and 403.502 kg Biocide 220 from the Gannet F pipeline bundle between 11 and 19 August 2011.

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SECTION 1: INTRODUCTION AND SURVEY DESIGN

1.1 INTRODUCTION

1.1.1 Since 1965 the Advisory Committee on Protection of the Sea (ACOPS) has compiled statistics and other information on different types of marine pollution in the waters around the British Isles. The competent authorities and other stakeholder groups have used this information for a wide range of purposes including policy and planning decisions, evaluations of particular programmes, assessments of regulatory compliance levels, development of risk assessment models and to support educational campaigns. Examples of organisations that have consulted the survey data include the Department for Transport, European Commission, International Maritime Organisation, Local Authority Associations, Marine Management Organisation, the Scottish Government and the Welsh Assembly Government.

1.1.2 The Maritime and Coastguard Agency (MCA) exercises Central Government's statutory responsibilities for taking action when oil or other hazardous and noxious substances emanating from any at-sea activity threatens the United Kingdom or its surrounding waters. As part of its commitment to provide cleaner seas around the United Kingdom, the MCA publishes, via ACOPS, an annual survey of reported discharges and releases attributed to vessels and offshore oil and gas installations operating in the United Kingdom Exclusive Economic Zone (UKEEZ). The survey results complement historical data and records and enable MCA's Counter Pollution and Response (CPR) Team to monitor trends in the number of incidents, the amount of oil and chemicals spilled, the geographical distribution of spills, the source of pollution and the nature of the pollution.

1.2 SURVEY DESIGN

1.2.1 In accordance with the MCA's survey specification a two-page questionnaire was designed to capture information relating to discharges of oil and other hazardous and noxious substances from vessels and unpermitted oil and chemical releases from offshore oil and gas installations. The survey area included the UKEEZ and adjacent areas of jurisdiction including ports, harbours and tidal stretches of rivers and estuaries. The boundaries of the UKEEZ are shown in Figure 2. The survey questionnaire and accompanying guidelines are provided in Appendix 2.

1.2.2 The survey questionnaire was distributed to the appropriate representatives of coastal local authorities, port and harbour authorities, national environment agencies and animal welfare groups. In addition, questionnaire responses were supplemented with Petroleum Operation Notices (PON 1s) provided by the Department of Energy and Climate Change’s (DECC) Offshore Environment Unit (Offshore Petroleum Regulator for Environment and Decommissioning, Department for Business, Energy and Industrial Strategy from 14 July 2016) and Pollution Reports (POLREPS) provided by the MCA. PON 1s are submitted to DECC by offshore oil and gas

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installations operators for all unpermitted oil or chemical releases to sea regardless of the volume lost. The resulting information was entered into a database identifying separate pollution incidents by date, location and other survey attributes.

1.2.3 Following analysis of data the survey results were presented in a range of different formats. In Section 2 descriptive statistics are provided for reported discharges and releases including some numerical trends with 2000 as the base year and also including categories and types of polluting substances, geographical locations and distributions of incidents, amount and extent of reported pollution, sources, details of prosecutions brought by the competent authorities and reporting effort.

1.2.4 In Section 3 summary reports are provided for all larger discharges and releases of 2 tonnes or more. Further information is provided in Section 4 for each of 11 geographical areas around the United Kingdom including the causes of particular incidents and counter-pollution responses where appropriate.

1.2.5 Elements of the survey quality assurance programme are outlined in Section 5 including the number of incident reports compiled from information submitted by two or more reporting organizations. Moreover, the current database is provided in Appendix 1 as part of the quality assurance programme in order to ensure the reliability and accuracy of the survey results. This is further enhanced by posting the survey report on the MCA’s website as a publicly available document for scrutiny by all interested stakeholder groups.

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SECTION 2: DESCRIPTIVE STATISTICS AND TREND ASSESSMENTS

2.1 NUMERICAL TRENDS IN REPORTED DISCHARGES

2.1.1 Following analysis of 1,749 incident reports and supporting information, 671 separate discharges from vessels and releases from offshore oil and gas installations were identified within the survey area during 2015. An overall reduction of 10.3% was evident in the total number of incidents reported over the previous year’s total.

2.1.2 Trends in annual totals for reported discharges between 2000 and 2015 are displayed in Figure 1, including separate line graphs for vessels and offshore oil and gas installations.

2.1.3 A total of 139 vessel-sourced discharges were reported during 2015 which was 7 less than the previous year’s total and significantly fewer than the mean annual total of 186 reported discharges between 2000 and 2014.

2.1.4 A total of 531 accidental releases were reported by offshore oil and gas installations operating in the open sea during 2015 representing an 11.6% decrease on the previous year’s total.

2.1.5 Further analysis of these statistics showed that the total of 337 oil releases from offshore oil and gas installations operating in the open sea during 2015 was 51 more than the mean annual total of 286 releases reported between 2000 and 2014. Estimated volumes of releases showed that 72% were less than 5 litres.

2.1.6 The total of 194 non-mineral oil releases by offshore installations during 2015, primarily those involving chemical substances, was 27 less than the total recorded during the previous year. Further details are provided in Appendix 1.

2.2 CATEGORIES OF REPORTED DISCHARGES

2.2.1 In Table 1 statistics are provided showing the different categories and numbers of discharges and releases reported during 2014 and 2015 for each of 11 enumeration areas. Geographical boundaries of each enumeration area and the complete survey area are shown in Figure 2. The statistics for discharges and releases in the United Kingdom Continental Shelf (UKCS) Oil and Gas enumeration area have been presented in two source categories: offshore oil and gas installations, and vessels.

2.2.2 The discharges and releases from all sources reported during 2015 comprised 70% mineral oils, 29% chemicals (including oil-based mud) and 1% other substances (including vegetable and animal oils).

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TABLE 1: TOTAL INCIDENTS REPORTED BY CATEGORY OF POLLUTION AND ENUMERATION AREA FOR 2014 AND 2015 (a).

Enumeration Area

Mineral oils

Garbage Vegetable & animal oils

Chemicals Other substances

Totals

1. North-east England 9 (8) - (1) - 1 (1) - (1) 10 (11)2. Eastern England 6 (2) - (-) - (2) - (-) - (-) 6 (4)3. Essex & Kent 4 (8) - (-) 1 (-) - (-) - (1) 5 (9)4. Southern England 13 (18) - (-) 2 (-) - (1) 1 (-) 16 (19)5. South-west England 17 (14) - (-) 1 (2) - (-) - (-) 18 (16)6. Bristol Channel & South Wales 8 (3) - (-) - (-) - (-) - (-) 8 (3)7. Irish Sea 14 (16) - (-) - (2) - (-) - (1) 14 (19)8. Western Scotland 20 (8) - (-) - (1) - (-) - (-) 20 (9)9. Orkney & Shetland Islands 9 (6) - (-) - (-) - (-) - (-) 9 (6)10. Eastern Scotland 11 (18) - (-) - (-) - (-) 1 (-) 12 (18)11. UKCS oil & gas installations(b) 337 (380) - (-) 1 (4) 193 (217) - (-) 531 (601)11. UKCS vessels 22 (32) - (-) - (-) - (-) - (1) 22 (33)

Totals 470 (513) - (1) 5 (11) 194 (219) 2 (4) 671 (748)

(a) The figures in parenthesis are the corresponding values from the 2014 survey.(b) The figures include all 2015 incidents including 1 incident currently under investigation by DECC and those which have been identified as

known third party releases (Refer to the DECC Environmental Alert 003/2015 for further details at:

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https://www.gov.uk/guidance/oil-and-gas-environmental-alerts-and-incident-reporting.

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https://www.gov.uk/guidance/oil-and-gas-environmental-alerts-and-incident-reporting

2.3 LOCATIONS OF REPORTED DISCHARGES

2.3.1 The geographical location of each reported discharge or release has been identified in Appendix 1 together with other information for each incident. To facilitate comparisons with previous years’ data, reported locations of all vessel-source oil discharges in the open sea, nearshore waters and estuaries during 2015 are plotted in Figure 3. Data for ports have been grouped separately for England, Wales, Scotland and Northern Ireland.

2.3.2 The overall geographical pattern for vessel-source mineral oil discharges in the survey area during 2015 showed more frequent reports of incidents across 6 enumeration areas, with the highest density of reported incidents in the open sea occurring in the vicinity of North Sea oil and gas installations.

2.3.3 The geographical locations of all discharges and releases are further analysed by their distribution across five marine environmental zones in each enumeration area: open sea; tidal river or estuary; bay or nearshore waters; beach or shore; and port or harbour. The results are presented in Table 2, which shows that 85% of all discharges and releases were reported in the open sea, 13% in ports or harbours and 2% across the remaining zones.

2.3.4 Reporting organisations submitted details of 87 incidents involving discharges of polluting substances from vessels and oil rigs located in ports or harbours during 2014, which was 14 fewer than the mean annual total of 101 discharges between 2000 and 2014. The largest port incident occurred at the Inchgreen Dry Dock in Greenock on 15 March following a 14-tonne marine diesel spill from the damaged general cargo vessel Lysblink Seaways (7,409 gt, built 2000) (Refer 4.8.2).

2.3.5 Three beach pollution incidents were reported during 2015 which was 4

fewer than the mean annual total of 7 incidents reported between 2000 and 2014. No reports were received of any beach pollution incidents involving mineral oils during 2015. Further details are provided in Section 4.

2.4 AMOUNT AND EXTENT OF REPORTED POLLUTION

2.4.1 Information describing observed dimensions and volumes of pollution for each enumeration area is presented in Table 3. It should be noted that the extent of pollution for incidents occurring within the UKCS enumeration area 11 was determined by the observed approximate release area of water surface pollution in 2 categories: up to 1.6 km2; or above 1.6 km2. Estimates for volumes of discharges and releases were not confirmed in written reports for 39 incidents, or 6% of the total reported (including ongoing releases).

2.4.2 Excluding releases from offshore oil and gas installations and vessels operating in the UKCS area 11, less than 1% of oil slicks or sheens were greater than 1.6 km in length when this information was reported. Broadly comparable statistics from the 2000, 2005 and 2010 surveys were 12%, 7% and 10% respectively. Within the UKCS enumeration area 11 a release area of water surface pollution by oil greater than 1.6 km2 was reported on a

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single occasion and this was attributed to an unidentified vessel (Refer 4.11.11).

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TABLE 2: TOTAL INCIDENTS REPORTED AND DISTRIBUTION BY MARINE ENVIRONMENTAL ZONE AND ENUMERATION AREA (a).

Enumeration area Open sea Tidal river/ estuary

Bay/nearshore waters

Beach/shore Port/harbour Totals

1. North-east England 3 (1) - - - 7 10 (1)2. Eastern England 1 1 - - 4 63. Essex & Kent 1 (1) - - - 4 5 (1)4. Southern England 1 - - 2 (2) 13 (1) 16 (3)5. South-west England 1 - 1 1 (1) 15 18 (1)6. Bristol Channel & South Wales 2 - 1 - 5 87. Irish Sea 2 1 1 - 10 148. Western Scotland 3 - 4 - 13 209. Orkney & Shetland Islands 1 - - - 8 910. Eastern Scotland 2 - 2 - 8 (1) 12 (1)11. UKCS oil & gas installations (b) 531 (194) (c) (c) (c) (c) 531 (194)11. UKCS vessels 22 (c) (c) (c) (c) 22

Totals 570 (196) 2 9 3 (3) 87 (2) 671 (201)

(a) The figures in parenthesis are included in the totals and refer to incidents involving discharges of substances other than mineral oil.

(b) The figures include all 2015 incidents including 1 incident currently under investigation by DECC and those which have been identified as known third party releases (Refer to the DECC Environmental Alert 003/2015 for further details at:https//www.gov.uk/guidance/oil-and-gas-environmental-alerts-and-incident-reporting.

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(c) Not applicable.

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TABLE 3: AMOUNT AND EXTENT OF REPORTED POLLUTION BY ENUMERATION AREA(a).

Enumeration area Extent of pollution (b) Estimated volumes of discharges and releasesWater surface Shoreline 1-455

litres456 litres – 999 litres

1-50 tonnes

>50 tonnes

Notknown

<1.6 km >1.6 km < 1.6 km > 1.6 km1. North-east England 10 (1) - - - 6 - 1 - 3 (1)2. Eastern England 6 - - - 4 - - - 23. Essex & Kent 5 (1) - - - 3 - - - 2 (1)4. Southern England 14 (1) - 1 (1) 1 (1) 6 1 - - 9 (3)5. South-west England 16 1 1 (1) - 12 - 1 - 5 (1)6. Bristol Channel & South Wales 8 - - - 6 - - - 27. Irish Sea 14 - - - 11 - - - 38. Western Scotland 20 - - - 9 - 2 - 99. Orkney & Shetland Islands 9 - - - 8 - - - 110. Eastern Scotland 12 (1) - - - 9 (1) - - - 311.UKCS oil & gas installations(f) (c) 531(194) - (d) (d) (e) 484 (154) 21 (17) 41 (36) - -11. UKCS vessels (c) 21 (c) 1 (d) (d) 20 1 1 - -

Totals 666 (198) 2 2 (2) 1 (1) 578 (155) 23 (17) 46 (36) - 39

(a) The figures in parenthesis are included in the totals and refer to incidents involving discharges or releases of substances other than mineral oil.(b) The units given are the maximum observed dimensions of pollution on water or the shoreline. (c) Approximate release area of water surface pollution <1.6 km2 or >1.6 km2. (d) Not applicable.(e) The figures include the 2015 volumes of releases from 16 ongoing incidents that commenced during 2008, 2010, 2011, 2013 and 2014 and

the figures exclude the volume of single release that commenced during 2015 and was under investigation at the time of reporting (Refer to Appendix 1 Table 11).

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(f) The figures include all 2015 incidents which have been identified as known third party releases. Refer DECC Environmental Alert 003/2015 for further details (https://www.gov.uk/guidance/oil-and-gas-environmental-alerts-and-incident-reporting).

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2.4.3 The modal class for all oil incidents was less than 455 litres but larger estimated maximum volumes of between 456 litres and 25 tonnes were recorded in 5 of the 11 survey enumeration areas. In total, 4% of all oil discharges and releases (including 3 ongoing releases) were greater than 455 litres where this information was recorded, compared with 6% during the previous year (Refer to Table 3 and Appendix 1 Table 11).

2.4.4 The largest oil spill, with an estimated maximum volume of 25 tonnes, occurred after the general cargo vessel Lysblink Seaways (7,409 gt, built 2000) ran aground near Kilchoan in the western entrance to the Sound of Mull on 18 February (Refer 3.3 WS/366).

2.4.5 The modal class for chemical incidents was also less than 455 litres but 35 releases, or 17% of the total (including 13 ongoing releases), were of 1 tonne or more. The largest chemical incident involving a release of 45, 254.15 kg of Oceanic HW540 v2 was caused by a hydraulics open system SCM failure on the Ninian Central Platform on 18 March (Refer 3.1 UKCS/1279).

2.4.6 In Section 3 details are provided for all reports involving releases or discharges of 2 tonnes or more during 2015 including 5 ongoing incidents that commenced during previous years.

2.5 CATEGORIES AND TYPES OF POLLUTION

2.5.1 Statistics showing the different categories and types of polluting substances are presented in Table 4. Mineral oils were again the most frequently recorded category of polluting substances and were identified in 70% of incident reports. Crude oils accounted for 15% of the identified types of mineral oil discharges. The largest crude oil incident, with an estimated maximum volume of 2 tonnes, was reported by the MacCulloch FPSO on 14 April. The incident was caused by human error following the incorrect routing of fluids. ConocoPhillips carried out a full review of operational activities and procedures to prevent reoccurrence (Refer 3.20 UKCS/1316).

2.5.2 Bunker, diesel, fuel and gas oil incidents were attributed to vessels and oil and gas installations on 137 occasions, 16 fewer than the previous year’s total, across all enumeration areas. The discharges and releases were reported most frequently in the UKCS, Irish Sea and south-west England enumeration areas.

2.5.3 Lubrication and hydraulic mineral oil incidents were recorded in 10 of the 11 survey enumeration areas with 169 releases attributed to offshore oil and gas installations. Of these, 53 hydraulic releases in quantities of up to 15 litres were identified by DECC as Known Third Party reports and attributed to remotely-operated vehicles (ROVS) and vessels.

2.5.4 Respondents described the remaining types of mineral oil discharges or releases as bilge oils, oily scum, oily water, sludge and various waste oils.

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TABLE 4: IDENTIFICATION OF A SOURCE OF POLLUTION AND REPORTED TYPE BY ENUMERATION AREA.

Vessel/offshore Types of pollution (a)

Enumeration Area pollution source (b) Mineral oils Garbage Other substances

Identified Suspected 1 2 3 4 5 6 7 8 9 10 11 12 131. North-east England 5 (1) 5 1 4 2 1 1 - - - - - - - 12. Eastern England 5 1 - 5 1 - - - - - - - - - -3. Essex & Kent 4 1 (1) - 2 - 2 - - - - 1 - - - -4. Southern England 13 (1) 3 (2) - 10 2 - 1 - - - 2 - - 1 -5. South-west England 16 2 (1) - 11 6 - - - - - 1 - - - -

6 6. 6. 6.Bristol Channel & South Wales 8 - - 5 3 - - - - - - - - - -7. Irish Sea 14 - - 11 3 - - - - - - - - - -8. Western Scotland 18 2 1 10 5 2 2 - - - - - - -9. Orkney & Shetland Islands 7 2 - 7 2 - - - - - - - - - -10. Eastern Scotland 11 (1) 1 - 9 1 - 1 - - - - - - 1 -11. UKCS oil & gas installations(c) 531 (194) - 55 63 169 6 44 - - - 1 6 187 - -11. UKCS vessels 1 21 4 - 1 1 16 - - - - - - - -

Totals 633 (197) 38 (4) 61 137 195 12 65 - - - 5 6 187 2 1Percentage of total reports 94 6 9 20 29 2 10 - - - 0.7 0.9 27.9 0.3 0.1

Key: Mineral Oils 1: Crude oil. 2: Bunker, diesel, fuel and gas oils. 3: Lubrication & hydraulic oils. 4: Other oil types. 5: Unidentified oil.

Garbage 6: Galley wastes. 7: Other garbage types. 8. Unidentified type of garbage.Other substances 9: Animal & vegetable oils. 10: Oil-based mud products.

11: Other chemical substances. 12: Other substances. 13: Unidentified substances. (a) The figures are frequencies for each of the categories shown and more than one entry may be made for each pollution incident. (b) The figures in parenthesis are included in the totals and refer to incidents involving discharges of substances other than mineral oils.(c) The figures include all 2015 incidents including 1 incident currently under investigation by DECC and those which have been been identified

as known third party releases (Refer to the DECC Environmental Alert 003/2015 for further details at:

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https://www.gov.uk/guidance /oil-and-gas-environmental-alerts-and-incident-reporting.

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2.5.5 A total of 201 reports referred to incidents involving substances other than mineral oils during 2015 compared with 235 reports during 2014. Offshore operators reported 193 unpermitted chemical releases and a single vegetable oil release during 2015 compared with 217 chemical releases and 4 vegetable oil releases during the previous year. The identified substances were associated with exploration and production operations and included ammonium bisulphite, barite, calcium bromide brine, calcium carbonate, calcium chloride brine, caustic soda, glycol solutions, hydraulic fluids, methanol, potassium chloride brine, soda ash and sodium solutions. The estimated volumes of unpermitted chemical releases ranged from 0.0002 kg to 45,254.15 kg and 35 releases (including ongoing releases) were 1 tonne or more. Further details are provided in Section 3 and Appendix 1.

2.5.6 Various chemicals need to be used as part of offshore exploration and production operations. The vast majority of chemicals spilled are regulated under the provisions of the Offshore Chemicals Regulations 2002 (OCR) for normal operational use and discharge to sea. Under the provisions of OCR each operational chemical is assessed to determine its potential environmental impact. Of the total chemicals spilled in 2015 approximately 90% were considered under the Commission for the Protection of the Marine Environment of the North East Atlantic (OSPAR) list of substances used and discharged offshore as Posing Little or No Risk to the Environment (PLONOR). None of the chemicals spilled was included as a substance listed in the OSPAR list of chemicals for priority action. None of the spill incidents gave rise to a significant environmental impact.

2.5.7 A total of 7 non-mineral oil incidents were attributed to identified or suspected vessel discharges in ports or in the open sea. Palm oil residues were washed ashore on 3 occasions in southern England and south-west England during 2015. The most extensive incident occurred during October after varying quantities of solidified rancid palm oil residues were washed ashore along a 5-km stretch of shoreline at Hastings. Clearance operations were completed over a 14-day interval. Lewes District Council submitted details of another palm oil incident after clumps of the waxy material were washed ashore along a stretch of Seaford beach during November and December (Refer 4.4.6).

2.5.8 Respondents also submitted details of 4 incidents involving discharges of fish oil, an undentified chemical, soot and paint. An inert gas boiler failure onboard the crude oil tanker Botofogo (58,418 gt, built 2010) berthed at Esso Fawley resulted in a carbon soot deposit along a 400-metre stretch of shoreline in the vicinity of the Calshot Activity Centre. The Centre suspended all waterborne activities until a clean-up operation had been completed by an Esso pollution response team. A gust of wind blew a near empty pot of yellow paint off the bulwark of the supply vessel FS Taurus 2,610 gt, built 1991) and into Aberdeen Harbour on 2 March. The oil based paint later dispersed naturally. In the open sea CleanSeaNet radar satellite images identified a discharge from the chemical tanker Hanne Theresa (2,682 gt, built 2002) operating off the Humber Estuary on 11 August. Subsequent communications with the vessel determined a permissible discharge of tank washings.

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2.6 REPORTED SOURCES OF POLLUTION

2.6.1 The figures in Table 4 show for each enumeration area the numbers of incidents in which reporting organisations either identified a specific source of pollution or suspected a vessel or offshore pollution source. The statistics for the identified sources of pollution are further analysed in Table 5 to show the different types of vessels. Additional details including the names of vessels or installations are provided in Appendix 1.

2.6.2 This method of analysis showed that releases from oil and gas installations operating on the UKCS accounted for 83.9% of all identified reports of pollution compared with 87.1% during the previous year. Corresponding statistics for fishing vessels, pleasure craft, general cargo vessels and the remaining types of vessels were 3.8%, 3.2%, 0.8% and 8.2% respectively.

2.6.3 Reporting organisations identified discharges from tankers on 8 occasions during 2015 which was the same number of incidents reported during the previous year. Port and harbour authorities reported tanker incidents at Falmouth, Finnart, Peterhead, Sullom Voe and the Tetney Monobuoy in the Humber Estuary. The largest port incident occurred at Falmouth Docks on 2 June after a split discharge hose caused a 4-tonne heavy fuel oil spill from the oil products tanker Wisby Verity (4,295 gt, built 2004). The oil was contained by booms and recovered by skimmers and absorbents to a reception barge alongside (Refer 4.5.3). The shuttle tanker Loch Rannoch (75,526 gt, built 1998) reported a one-tonne crude oil spill after moorings parted during a discharging operation at the Tetney Monobuoy on 24 January. The resulting sheen dispersed naturally and no further actions were required (Refer 4.1.2). The oil tanker Ashna A (156,417gt, built 1999) reported a 40-litre crude oil discharge at the Finnart Oil Terminal in Loch Long on 25 June.

2.6.4 Respondents also submitted details of 3 discharges from warships operating in the open sea and in ports and harbours. The Duke-class Type 23 Frigate HMS St Albans (built 2000) reported a 2-litre aviation fuel spill whilst alongside the Fountain Lake Jetty at Portsmouth on 2 April. A clean-up operation was completed at HMNB Devonport following a fuel oil discharge from the Duke-class Type 23 Frigate HMS Sutherland (built 1996) on 4 April. In the open sea the Royal Norwegian Navy Frigate Thor Heyerdahl C (built 2009) reported a 100-litre gas oil spill off Tiree on 13 April (Refer 4.8.6).

2.6.5 At least 28 confirmed discharges were attributed to vessel casualties including 9 fishing vessels, 7 pleasure craft and workboats, 3 barges, 2 general cargo vessels, 2 tugs, a bunker tanker, a car carrier, a dredger, a tall ship and a research vessel. Five vessel-casualty spills occurred in nearshore waters, 18 in ports and the remainder in the open sea. Moreover, vessel casualties accounted for 37% of all discharges attributed to fishing vessels and likewise 29% of all discharges attributed to pleasure craft and workboats. The corresponding statistics from the 2014 survey were 50% and 72% respectively. Further details identifying the likely causes of vessel casualties, where known, are provided in Section 4 and Appendix 1.

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TABLE 5: REPORTED SOURCE OF POLLUTION BY ENUMERATION AREA(a).

Enumeration area MCT MFV MSV MT MV OOI PC WR O1. North-east England 1 (1) 1 - 1 - - - - 22. Eastern England - 1 - - - - 2 - 23. Essex & Kent - - - - - - 2 - 24. Southern England - 1 1 1 (1) 1 - 5 - 45. South-west England - 4 - 1 - - 4 - 76. Bristol Channel & South Wales - 1 - 1 - - 2 - 47. Irish Sea - 4 - - - - 1 - 98. Western Scotland - 7 - 1 3 - 2 - 59. Orkney & Shetland Islands - 2 - 1 - - 1 - 310. Eastern Scotland - 3 4 (1) 1 1 1 1 - -11. UKCS oil & gas installations b) - - - - - 531 (194) - - -11. UKCS vessels - - 1 - - - - - -

Totals 1 (1) 24 6 (1) 7 (1) 5 532 (194) 20 - 38

Key: MCT: Chemical tanker. MFV: Fishing vessel. MSV: Offshore support vessel. MT: Coastal oil tanker/VLCC. MV: General cargo vessel. OOI: Offshore oil or gas installation. PC: Pleasure craft. WR: Wreck. O: Other type of vessel.

(a) The figures in parenthesis are included in the totals and refer to incidents involving discharges of substances other than mineral oils.

(b) The figures include all 2015 incidents including 1 incident currently under investigation by DECC and those which have been identified as known third party releases (Refer to the DECC Environmental Alert 003/2015 for further details at:https://www.gov.uk/guidance/oil-and-gas-environmental alerts and incident reporting.

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2.6.6 Twelve vessel-casualty spills were reported in England during 2015. On 1 November the converted fishing vessel Jolly Roger (built 1971) sank in the Floating Dock at Penzance causing a spillage of 150 litres of diesel oil and 50 litres of lubrication oil. Clean-up and salvage operations were completed over a 14-day period and the costs were later charged to the owner of the vessel (Refer 4.5.6). The hopper barge Jan Leeghwater (3,315 gt, built 2010) accidentally discharged 200 litres of light fuel into the River Mersey following a collision with a tug on 17 June. A workboat ran aground and broke up at New Brighton causing a 180-litre diesel oil spillage. The vehicle carrier G Poseidon (72,408 gt, built 2011) was identified as the source of a 50-litre hydraulic oil spill which was caused by damaged machinery and hull plating (Refer 4.4.4).

2.6.7 Two vessel-casualty spills were reported in Wales during 2015. The 14-metre crabbing vessel CSK ran aground in West Angle Bay on 28 October causing a 10-litre diesel spill. As a consequence of extensive hull damage the vessel was later winched onto a nearby beach and dismantled for disposal ashore (Refer 4.6.5). A Natural Resources Wales report referred to a 50-litre diesel spill after the derelict coastal sailing barge Eben Haezer sank in Cardiff’s Bute East Dock on 23 November.

2.6.8 Reporting organisations in Northern Ireland identified 3 vessel-casualty spills during 2015. A diesel sheen was observed after the 17-metre wooden twin-rigged stern trawler Silver Dee (63 gt, built 1971) sank following a collision with another fishing vessel off County Down on 29 July. An absorbent boom was deployed after the 9-metre fishing vessel John Boy grounded and tipped over in Strangford Lough on 16 October. The 17-metre research vessel Ostrea sank alongside a pontoon in Loch Foyle causing a small fuel oil spillage.

2.6.9 Scottish reporting organisations identified 11 oil discharges caused by vessel casualties during 2015. The cement carrier Cemfjord (1,850 gt, built 1984) capsized and sank in heavy seas off the Pentland Firth on 3 January. A slight sheen was later reported which was dispersed by wave action. The general cargo vessel Lysblink Seaways (7,409 gt, built 2000) ran aground near Kilchoan on 18 February causing a 25-tonne marine gas oil spill, while in a second incident on 15 March approximately 14 tonnes of marine diesel were discharged into a dry dock from the vessel’s ruptured and damaged fuel tanks (Refer 4.8.2).

2.6.10 A Tier 2 contractor was engaged to assist in a counter pollution operation in Peterhead Harbour following a gas oil spill from the damaged single-hulled bunker tanker Erin Wood (70gt). The tanker had earlier collided with a general cargo vessel off Peterhead on 29 August sustaining damage to the port side main cargo tank and wing tank. A boom and absorbent mats were deployed around the vessel whilst the remaining oils were pumped ashore to road tankers (Refer 4.10.3). The 18-metre scallop dredger St Apollo (51gt, built 1979) ran aground on rocks and capsized near Inninmore Bay to the eastern end of the Sound of Mull on 24 August. A slight surface sheen was identified which was later broken up and dispersed

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by wave action. The vessel was declared a constructive total loss and hence all potential pollutants and contaminants, including 10.5 tonnes of marine diesel oil, were removed from the wreck. A small patch of diesel oil was reported after the 16-metre wooden-hulled trawler Karinya (built 1982) caught fire and sank north of Rattray Head on 4 October.

2.7 PROSECUTIONS

2.7.1 Details of 2 successful prosecutions brought by the Crown Office and Procurator Fiscal Service in Scotland for marine pollution offences are summarised in Table 6.

2.7.2 On 10 August 2011 a quantity of oil extending for 4.5 kms was spotted on the sea surface in the vicinity of Shell’s Gannet F field, 180 kms from Aberdeen. The oil release was subsequently observed to be emanating from a subsea relief valve attached to the Gannet F pipeline bundle in the vicinity of the Gannet F towhead protection structure. The oil release was secured on 19 August 2011 when the subsea relief valves were manually isolated and closed by divers. Shell subsequently estimated that a total of 219 tonnes of crude oil and 403.502 kg of Biocide 220 had been released to sea during the incident.

2.7.3 On 24 November 2015 Shell UK Limited admitted breaching the Regulation 3A of the Offshore Petroleum Activities (Oil Pollution Prevention and Control) Regulations 2005 and Regulation 13 of the Pipelines Safety Regulations 1996 and was fined a total of £22,500 at Aberdeen Sheriff Court. The Health and Safety Executive (HSE) and DECC carried out a joint investigation into the incident which concluded that the 8-inch Gannet F oil production pipeline within the pipeline bundle had failed. As a result, crude oil entered the insulated area between the production pipeline and its sleeve and was ultimately released to sea through the relief valves. It concluded there was no significant environmental impact or any risk that anyone would be harmed.

2.7.4 In another case heard at the Aberdeen Sheriff Court on 1 July 2015 Shell UK Limited pleaded guilty to an unlicensed release of 13.886 tonnes of diesel oil at the Brent Bravo platform on 11 May 2013 and was fined £6,500. The incident occurred during a bunkering operation between a supply vessel and the platform. During a subsequent investigation DECC inspectors found 2 damaged sections of hose which had not been fully inspected before starting operations due to the way the bunkering station was set up.

2.7.5 In addition Total E&P Limited was fined £1.25 million after pleading guilty to breaching Regulation 13(1)(a) and (b) of the Offshore Installations and Wells (Design and Construction, etc) Regulations 1996 and Section 33 (1)(c) of the Health and Safety at Work Act 1974 which caused uncontrolled releases of condensate, gas and mud from the Elgin platform between March and May 2012 (Refer Table 11).

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TABLE 6: DETAILS OF PROSECUTIONS BROUGHT BY THE COMPETENT AUTHORITIES IN THE UNITED KINGDOM DURING 2015(a)

Date and location of incident Name of vessel or offshore installation and type of pollution

Prosecution brought by Fine

10 August 2011 57-05N: 00-57ENorth Sea

Gannet E & F Manifold, 219 tonnes crude oil and 403.502 kg biocide

Procurator Fiscal £22,500

11 May 2013 61-03N: 01-42E North Sea

Brent Bravo 13.886 tonnes diesel oil Procurator Fiscal £6,000

(a) In addition Total E&P Limited was fined £1.25 million after pleading guilty to breaching Regulation 13(1)(a) and (b) of the Offshore Installations and Wells (Design and Construction, etc) Regulations 1996 and Section 33 (1)(c) of the Health and Safety at Work Act 1974 which caused uncontrolled releases of condensate, gas and mud from the Elgin platform between March and May 2012 (Refer Table 11).

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Prosecutions brought under Control of Pollution Act 1974, Merchant Shipping Act 1995, Merchant Shipping (Prevention of Oil Pollution) Regulations 1996, Merchant Shipping (Dangerous or Noxious Liquid Substances in Bulk) (Amendment) Regulations 1996, Merchant Shipping (Prevention of Pollution by Garbage) Regulations 1998, Pollution Prevention and Control Act 1999, Offshore Chemicals Regulations 2002, Offshore Petroleum Activities (Oil Pollution Prevention and Control) Regulations 2005.

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2.8 REPORTING EFFORT

2.8.1 The number of incident reports received from each of 11 reporting organisations is shown in Table 7. The total number of reports received and processed was 1,749 from which 671 separate incidents were subsequently identified and entered into the 2015 database.

2.8.2 Observations from air surveillance patrols and a satellite surveillance programme were again employed to help identify discharges from vessels and releases from offshore oil and gas installations operating in the UKEEZ (Refer Section 4).

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TABLE 7: TOTAL NUMBER OF INCIDENT REPORTS RECEIVED FROM EACH REPORTING ORGANISATION.

Reporting organisations Total number of reports received

English and Welsh Local Authorities 111Environment Agency for England 26

English Inshore Fisheries and Conservation Authorities 9Natural Resources Wales 7

Northern Ireland Environment Agency 2United Kingdom Ports 126

Maritime and Coastguard Agency 762DECC Offshore Environment Unit (BEIS from July 2016) 555

Scottish Environment Protection Agency 27Scottish Local Authorities 37

Scottish Society for the Prevention of Cruelty to Animals 87Grand Total 1,749

(a) The figure provided includes duplicate PON 1 reports provided by DECC which form part of the quality assurance process (Refer to Section 5).

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SECTION 3: SUMMARY OF LARGER INCIDENTS (TWO TONNES OR MORE) DURING 2015

(Refer to Section 4 and Appendix 2 for further details of each incident)

The figures given below are indicative of the reported volumes of releases confirmed in written reports. However, incidents in which significant amounts of beach material were mixed with pollutants, or where the volumes released were not indicated or measured, are not included. The incidents are ordered according to the volume of the discharge or release.

In all cases where the source of the release was from subsea control equipment the fluids lost were associated with oil and gas exploration and production operational processes. The operator continued the release to maintain the integrity and functionality of the wells/equipment and dive support vessels could be resourced to complete the necessary repairs.

Each release required the operator to assess the potential environmental impacts associated with the release. The operator in each case was required to provide regular updates on their management plan as part of investigations being conducted by DECC (BEIS from 14 July 2016). Where necessary, meetings with the operator took place to discuss aspects associated with the incident, environmental impact and the operator’s short- and long-term plans to stop the release and, where relevant, effect a final repair.

3.1 UKCS 18 March: CNR International U.K. Limited Ninian Central Platform (11-UKCS/1279)CNR International U.K. Limited reported an incident resulting in the release of 45,254.15 kg of Oceanic HW540 v2 due to hydraulics open system SCM failure. DSV IRM work at Strathspey was completed. Suspect hydraulic accumulators at the Strathspey manifold were isolated and the HP hydraulic rails A and B pressure tested successfully. The usage was monitored for 24 hours and found stable, and the incident closed.

3.2 UKCS 31 August: BP Exploration Operating Company Limited Schiehallion Subsea Clusters (11-UKCS/1518)BP Exploration Operating Company Limited reported an incident resulting in the combined release of 30,340.78 kg of monoethylene glycol, RX-5248 and RX-9022 due to a release during a leak testing program, designed to identify any leakage within the system. The chemical was permitted to be discharged to sea should the leak test have been successful.

3.3 Western Scotland 18 February: MV Lysblink Seaways (8-WS/366)The general cargo vessel Lysblink Seaways (7,409 gt, built 2000) ran aground on rocks near Kilchoan in the western entrance to the Sound of Mull on 18 February. Some of the vessel’s fuel tanks were breached resulting in 25 tonnes of marine gas oil entering the water. Booms were deployed around the vessel and a salvage operation was later completed.

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3.4 UKCS 18 January: Chevron North Sea Limited Captain WPP’A’ (11-UKCS/1213)Chevron North Sea Limited reported an incident resulting in the combined release of 24,512 kg of sodium chloride, caustic soda, soda ash, BARAZAN, DEXTRID E, barite, CFS-476, STARCIDE and OXYGON due to a small subsea release from the well. An investigation was opened into the release of water based mud to the environment during planned pressure testing of a well. The release was a result of casing failure due to corrosion. The investigation was closed following Chevron North Sea Limited’s investigation of the casing corrosion potential of Captain wells and their development of a comprehensive strategy to manage corrosion.

3.5 UKCS 20 August: CNR International (U.K.) Limited Strathspey Manifold (11-UKCS/1499)CNR International (U.K.) Limited reported an incident resulting in the combined release of 20,290.89 kg of Oceanic HW540 v2 and Oceanic HW540 E due to hydraulics open system fittings/connections. All external leaks associated with M2z and M9 have been rectified and the situation is no longer ongoing.

3.6 UKCS 11 June: Total E&P UK PLC Dunbar Platform (11-UKCS/1386)The Dunbar Platform reported an incident resulting in the combined release of 18,974.95 kg of TETRACIDE D, OXBAN HB, STARCIDE, OXYGON, monoethylene glycol (all dilutions), calcium chloride brine and CORSAF CR-I due to water based chemicals discharge via platform drains whilst flushing of the trip tank was taking place. Total E&P undertook a review and revision or relevant risk assessments and procedures and delivered additional crew training. An investigation was carried out into relation to this incident, which resulted in an Enforcement Letter being issued.

3.7 UKCS 7 March: Shell U.K. Limited Pierce FPSO (Haewene Brim) (11-UKCS/1261)Shell U.K. Limited reported an incident resulting in the release of 16,240 kg of Transaqua HT2 due to hydraulics open system fittings/connections. Leak from the SSSV associated with the Pierce FPSO (Haewene Brim) installation. The SSSV Control Line was repaired, successfully stopping the release in August 2015. An investigation was carried out into relation to this incident, which resulted in an Enforcement Letter being issued.

3.8 Western Scotland 15 March: MV Lysblink Seaways (8-WS/375) Approximately 14 tonnes of marine diesel oil were accidentally discharged into the Inchgreen Dry Dock at Greenock from the damaged general cargo vessel Lysblink Seaways (7,409 gt, built 2000). The oil spill had been anticipated and equipment and resources had been deployed in advance by contractors to capture and remove the pollution.

3.9 UKCS 14 July: Chevron North Sea Limited Captain WPP’A’ (11-UKCS/1447)

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Chevron North Sea Limited reported an incident resulting in the release of 13,770 kg of potassium chloride brine due to a pinhole leak in pipework. Cause of release was lack of ownership to track and manage integrity anomalies raised during inspection of drilling rig pipework. Investigation closed following repair and with Chevron North Sea Ltd confirming that drilling rig pipework is now included in the asset integrity management system.

3.10 UKCS 7 August: Apache Beryl I Limited Beryl Alpha (11-UKCS/1475)Apache Beryl I Limited reported an incident resulting in the release of 9,369 kg of Oceanic HW 443 due to hydraulics open system SCM failure. The Subsea Control Module (SCM) had been in place for a number of years and by the nature of its location cannot be readily inspected. Oceanic HW 443 has a low environmental hazard potential. Upon identification of the release Apache expedited the replacement of the SCM. No further action was required.

3.11 UKCS 27 April: Maersk Oil UK Donan FPSO Global Producer III (11-UKCS/1338)Maersk Oil UK reported an incident resulting in the release of 8,780 kg of Transaqua HT2 due to hydraulics open system fittings/connections. Maersk Oil had a release of Transaqua HT2 from a subsea infrastructure. The operator has reviewed and improved hydraulic use in order to facilitate early identification of abnormal fluid use. The release was reported to DECC and was repaired following a DSV intervention.

3.12 UKCS 10 June: Perenco UK Limited Leman AP Platform (11-UKCS/1384)Perenco UK Limited reported an incident resulting in the release of 6,791 kg of MEG/water mixes and CRW85689 due to a release from a pipework joint. The release occurred due to injected chemical pooling in a deadleg being released on the removal of a spade during a deisolation. Perenco were required to produce and implement an improvement plan to prevent future such occurrences. Confirmation of full implementation of the plan was confirmed during a BEIS inspection in August 2016.

3.13 UKCS 3 June: BG plc Armada Platform (11-UKCS/1380)BG plc reported an incident resulting in the release of 5,509 kg of Transaqua HT2N due to hydraulics open systems fittings/connections. This was an ongoing subsea release of PLONOR fluid which only occurs when the well is open flowing. Cessation of production for the well is imminent at which stage well will be closed in, stopping the release.

3.14 UKCS 29 March: Nexen Petroleum UK Limited Golden Eagle W Platform (11-UKCS/1296)Nexen Petroleum UK Limited reported an incident resulting in the release of 5,301.71 kg of methanol (all grades) due to a storage tank open drain line. Loss of full methanol inventory to sea due to inadvertent opening of safety valve. An investigation was carried out into relation to this incident, which resulted in an Enforcement Letter being issued.

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3.15 South-West England 2 June: MT Wisby Verity (5-SW 203)A split hose from the oil products tanker Wisby Verity (4,295 gt, built 2004) was identified as the cause of a 4-tonne heavy fuel oil spill at Falmouth Docks eastern wharf on 2 June. The oil was contained by boom and recovered by skimmers and absorbents to a reception barge alongside.

3.16 UKCS 14 March: Fairfield Betula Limited Dunlin A Platform (11-UKCS/1271)Fairfield Betula Limited reported an incident resulting in the release of 2,798 kg of calcium chloride brine due to a sheared bunkering hose. An investigation was opened by the Department which concluded the root cause of the failure appeared to be off-centre tensile loading of the hose, through the actions of wind and waves. The company carried out a number of actions and changes in procedures to prevent reoccurrence. The environmental impact from the release was considered to be negligible.

3.17 UKCS 16 January: Prospector Offshore Drilling Prospector 5 (11-UKCS/1212)Prospector Offshore Drilling reported an incident resulting in the release of 2.52 tonnes of hydraulic fluid due to a missing capping plug on a flange on derrick pipework. It is assumed this was due to vibration. All capped flanges were swapped out to prevent future occurrence and the alarms on the hydraulic fluid supply tank were changed to ensure earlier identification of a release.

3.18 UKCS 17 June: Oranje-Nassau Energie UK Limited Sean RD Platform (11-UKCS/1401)Oranje-Nassau Energie UK Limited reported an incident resulting in the release of 2.2 tonnes of rapeseed oil due to annular communication failure. The release point was subsequently engineered out. Environmental damage was negligible.

3.19 UKCS 18 September: Chevron North Sea Limited Captain WPP’A’ (11-UKCS/1550)Chevron North Sea Limited reported an incident resulting in the release of 2,041 kg of Oceanic HW540 E from a Captain subsea control module due to hydraulics open system SCM failure. Release monitored and investigated by DECC. The release ceased following work during the 2016 annual shutdown.

3.20 UKCS 14 April: ConocoPhillips (U.K.) Limited MacCulloch FPSO (11-UKCS/1316)ConocoPhillips (U.K.) Limited reported an incident resulting in the release of 2 tonnes of crude oil due to the incorrect routing of fluids. An investigation was opened by the Department and a team was deployed offshore and reviewed the incident, subsequently an enforcement letter was issued. A number of operational and procedural factors were identified, the company subsequently carried out a full review of the operational activities and procedures to prevent reoccurrence. The installation ceased production shortly thereafter and is off location for decommissioning.

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UKCS INCIDENTS OCCURRING IN A PREVIOUS CALENDAR YEAR BUT WITH QUANTITIES RELEASED DURING 2015

The following reported UKCS incidents occurred during a previous calendar year, but still continued over a period of time during 2015.

3.21 UKCS 1 January: Premier Oil UK Limited Balmoral FPV (ongoing incident from 11 November 2014 UKCS/1687)Premier Oil UK Limited reported an ongoing loss of 28,898 kg between 1 January and 31 December 2015, of Pelagic 100 Production Control Fluid due to all subsea hydraulic system failures. The source of the hydraulic fluid release was identified and corrective action taken to prevent further loss. The operator undertook a full review of hydraulic fluid tracking and management processes and introduced additional controls to allow for the early identification of system anomalies and minimise the amount of hydraulic fluids released to sea.

3.22 UKCS 1 January: CNR International Ninian Central (ongoing incident from 3 May 2014 UKCS/1350)CNR International reported an ongoing loss of 15,022.16 kg between 1 January and 31 December 2015, of Oceanic HW540 v2 due to a leak of subsea hydraulic control fluid from the system controlling pipeline SSIVs from the Ninian Central installation. CNRI were continuing to carry out investigations via subsea intervention vessels divers and ROVs to identify source during 2015.

3.23 UKCS 3 May: Marathon Oil UK LLC Brae Central Template (ongoing incident from 23 December 2014 UKCS/1737)Marathon Oil UK LLC reported an ongoing loss of 5,424 kg of HW443 due to hydraulics open system SCM failure which resulted in the loss of hydraulic fluid to sea due to incorrect alignment of a valve. Marathon increased monitoring of hydraulic fluid usage to allow early indication of releases from the system. An investigation was carried out into relation to this incident, which resulted in an Enforcement Letter being issued.

3.24 UKCS 1 January: EnQuest Heather Limited Don SW and West Don Northern Producer (ongoing incident from 14 March 2013 UKCS/1285)EnQuest Heather Limited reported an ongoing loss of 4,130.17 kg between 1 January and 31 December 2015, of Castrol Transaqua from a leaking fitting on the West Don PO3 wing valve. The Department investigated the circumstances of this release and several attempts were required to resolve the issues. The predominant release was an issue with an actuator valve which required a bespoke engineering fix. This was further exasperated by availability of an appropriate dive support vessel (DSV) during a period of benign environmental conditions to allow a safe operation. An environmental assessment of the release demonstrated a negligible environmental impact. The company reported a full repair was successful to the Department during May 2015.

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3.25 UKCS 1 January: EnQuest Heather Limited Don SW and West Don Northern Producer (ongoing incident from 8 December 2011 UKCS/1669)EnQuest Heather Limited reported an ongoing loss of 3,565.88 kg between 1 January and 31 December 2015, of Gyptron SA3460 from a leaking subsea distribution unit. An investigation was carried out by the Department, the company were required to locate and rectify the sources of the release. Operationally this was a complex task due to the requirement for diver intervention and challenging environmental conditions, which included several attempts with a dive support vessel (DSV) to intervene. The company continued to liaise with the Department until all releases had ceased and provided an environmental assessment which demonstrated a negligible environmental impact.

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SECTION 4

ENUMERATION AREA SUMMARY REPORTS

4.1 North-east England

4.2 Eastern England

4.3 Essex & Kent

4.4 Southern England

4.5 South-west England

4.6 Bristol Channel & South Wales

4.7 Irish Sea

4.8 Western Scotland

4.9 Orkney & Shetland Islands

4.10 Eastern Scotland

4.11 UKCS (oil and gas installations and vessels)

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4.1 North-east England (Northumberland, Tyne & Wear, Durham, Yorkshire and The Humber)

4.1.1 Ten vessel-source pollution incidents were identified by reporting

organisations during 2015 compared with 11 incidents during 2014. Seven discharges occurred in local ports and harbours and three discharges were recorded in the open sea. A source of pollution was identified on 5 occasions, the sources comprising a chemical tanker, an oil tanker, a fishing vessel, a tug and a dredger. Releases from offshore oil and gas installations operating off north-east England were included in the statistics for the UKCS (Refer to 4.11).

4.1.2 Three incidents were reported in the River Humber area during 2015. A POLREP referred to a one-tonne crude oil spill from the shuttle tanker Loch Rannoch (75,526 gt, built 1998) at the Tetney Monobuoy on 24 January. The incident occurred after moorings parted during a cargo discharging operation. The resulting sheen dispersed naturally and no further actions were required by tugs located in close proximity to the tanker. A leaking windlass was identified as the cause and source of a 30-litre hydraulic oil spill from the tug Svitzer Trimley (371 gt, built 1991) off Spurn Point on 6 February. The oil dispersed naturally and no further actions were required. A POLREP and an Environment Agency (EA) report referred to a diesel spill from an unidentified vessel at Immingham Dock on 7 September. Booms were deployed in a clean-up operation.

4.1.3 Two pollution incidents were described in reports submitted by PD Teesport. An unidentified vessel was believed to have been the source of a 4-litre diesel oil spill at Hartlepool on 26 January. A clean-up operation was completed following a 6-litre hydraulic oil discharge from the trailing suction hopper dredger Cleveland County (1,265 gt, built 1973) on 30 September.

4.1.4 The 10-metre fishing boat Tom Boffin sank in the mouth of the River Tweed at Berwick on 5 May and a light diesel sheen was later observed extending 150 metres downstream from the vessel. The sheen dispersed naturally and the vessel was successfully re-floated on the following day. An unidentified vessel was believed to have been the source of a diesel oil discharge in Warkworth Harbour on 3 November.

4.1.5 Three incidents were reported in the open sea during 2015. European Maritime Safety Agency (EMSA) CleanSeaNet radar satellite images identified a discharge from the chemical tanker Hanne Theresa (2,682 gt, built 2002) operating off the Humber Estuary on 11 August. Subsequent communications with the vessel determined a permissible discharge of tank washings. Two small surface sheens attributed to unidentified vessels were reported by offshore installations on 15 July and 3 November.

4.1.6 In addition to the pollution incidents above POLREPS also referred to a lost cargo incident. During rough weather 4 iso-tank containers and a box container were washed overboard from the containership Vohburg (7,852 gt, built 2005) off Teesport on 31 January. One iso-tank container was filled

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with 26,800 kg of dicyclopentadiene (UN 2048) and was later recovered off Spurn Head on 6 February. A second lost iso-tank container was retrieved in the nets of a fishing vessel operating off Whitby on 2 October.

4.2 Eastern England (Lincolnshire, Norfolk & Suffolk)

4.2.1 Six incidents were recorded during 2015, two more than the total recorded during the previous year. Accidental releases from offshore oil and gas installations operating off eastern England were included in the statistics for the UKCS (Refer to 4.11).

4.2.2 Three incidents were reported by the Broads Authority during 2015. A clean-up operation was completed following a 2-litre diesel oil spill from a motor cruiser in Oulton Broad on 16 January. A residential boat sank on its moorings alongside the ABC wharf at Norwich on 9 July causing a diesel sheen which was broken up and dispersed by propeller wash. A boom was deployed in a clean-up operation following a diesel oil discharge from an unidentified pleasure craft at the same location on 15 August.

4.2.3 An unidentified vessel was believed to have been the source of 5-litre diesel oil discharge at the port of Great Yarmouth on 11 August. The pollution dispersed naturally on an ebb tide. An EA report referred to an incident at the port of King’s Lynn following a 5-litre diesel oil discharge from an unidentified fishing vessel.

4.2.4 In the open sea a POLREP described an incident at the Sheringham Wind Farm following a 10-litre hydraulic oil spill from a remotely operated underwater vehicle (ROV).

4.3 Essex and Kent

4.3.1 Five vessel-source pollution incidents were identified by reporting organisations during 2015 compared with 9 incidents during 2014. Four discharges occurred in local ports and harbours and a single discharge in the open sea. The source of pollution was identified on 4 occasions comprising 2 pleasure craft, a tug and a cruise ship.

4.3.2 Port and harbour authorities reported vessel discharges at Dover, Medway and Ramsgate. The dawn-class cruise ship Norwegian Star (91,740 gt, built 2001) was identified as the source of a 2-litre oily water sludge spill at the Port of Dover on 6 October. The incident occurred after a hose between the ship and a road tanker was disconnected following a discharge operation. A clean-up operation was completed by the vessel’s crew.

4.3.3 Two incidents were reported by Peel Ports Medway during 2015. The motor cruiser Khamsin sank whilst berthed at Rochester Pier on 10 March causing a 5-litre diesel spill. The privately owned 20-metre tug Pelikaan (built 1957) sank on her moorings at Cuxton on 24 July. A counter-pollution operation was completed which included the removal of all oil from the vessel which was later salvaged and removed to a local boat yard for repairs. An

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accidental bilge discharge from the pleasure craft Lady Kelsey was identified as the cause of an incident at Ramsgate on 15 December.

4.3.4 In the open sea a small surface slick composed of fish oil residues was identified in the Dover Strait by a surveillance aircraft on 8 July. The source of the pollution was believed to have been a tank washout from an unidentified passing vessel.

4.4 Southern England (East and West Sussex, Hampshire, Dorset and the Isle of Wight)

4.4.1 Reporting organisations submitted details of 16 pollution incidents attributed to vessels during 2015 compared with 19 incidents during 2014. Thirteen recorded incidents were in ports and harbours compared with 16 during the previous year. A source of pollution was identified on 13 occasions comprising 5 pleasure craft, a fishing vessel, a vehicle carrier, a high speed catamaran passenger vessel, a coastal survey vessel, a tug, a warship, a crude oil tanker and an all-weather lifeboat. Fuel oils were identified as pollutants on 10 occasions and there were 2 references to beach pollution incidents.

4.4.2 Oil discharges resulting mainly in surface sheens were reported in local ports and harbours at Bridport, Cowes, Hamble, Littlehampton, Lymington, Poole, Portsmouth, Shoreham, Southampton and Weymouth. An unidentified pleasure craft was believed to have been the source of a diesel discharge in Bridport’s West Bay Marina on 28 October. Cowes Harbour Commission submitted details of an incident after the 19-metre converted trawler Mabuhay sank on her moorings near to the Medina Wharf causing a 4-litre diesel oil spill. Containment and absorbent booms were deployed during a counter-pollution operation. Three reports referred to fuel oil sheens attributed to pleasure craft operating in ports and marinas at Hamble, Littlehampton and Lymington.

4.4.3 A Poole Harbour Commissioners report described a 3-litre diesel spill from the 16-metre RNLI Tamar class all-weather lifeboat Baltic Exchange III at Holes Bay on 25 August. The incident occurred during a refuelling operation and a clean-up operation was completed. The Duke-class Type 23 frigate HMS St. Albans (built 2000) reported a 2-litre aviation fuel spill (AVCAT) whilst alongside the Fountain Lake Jetty at Portsmouth on 2 April. A clean-up operation was completed at Shoreham on 19 March following a one-litre diesel oil spill from the coastal survey ship Flatholm (128 gt, built 1977).

4.4.4 Three incidents were recorded at ABP Southampton during 2015. The vehicle carrier G Poseidon (72,408 gt, built 2011) was identified as the source of a 50-litre hydraulic oil spill which was caused by damaged machinery and hull plating. Tier 1 preventative action was taken by the port authority to contain and remove the pollution from the water surface. On 30 March the tug Asterix 75 gt, built 2014) capsized in strong winds and sank in Southampton water at the Fawley Marine Terminal. Absorbent and fence booms were deployed to contain a light diesel sheen. During a salvage operation dives were undertaken to close fuel tank vents and complete other

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actions to prevent any further leakage of fuel oil and hydraulic fluid. The vessel was successfully raised to the surface on 10 April and pumped out with the dirty water transferred to holding tanks on supporting vessels. An inert gas boiler failure onboard the crude oil tanker Botofogo (58,418 gt, built 2010) berthed at Esso Fawley resulted in a carbon soot deposit along a 400-metre stretch of shoreline in the vicinity of the Calshot Activity Centre. The Centre suspended all waterborne activities until a clean-up operation had been completed by an Esso pollution response team.

4.4.5 Two oil spills were reported in Weymouth Harbour during 2015. A hose failure was identified as the cause of a 40-litre hydraulic oil discharge from the twin-hulled fast catamaran ferry Condor Express 5,005 gt, built 1996) on 10 March. A boom and absorbent pads were deployed in a clean-up operation. Approximately 500 litres of diesel oil leaked from a defective fuel tank onboard the 12-metre motor boat Larissa on a return voyage from Weymouth Harbour to Portland Bill on 15 May. Booms were deployed around the vessel when it berthed at Weymouth Marina and the pollution within the harbour was broken up and dispersed by propeller agitation from workboats and a RIB. Most of the oil was lost in the open sea where it was broken up and dispersed by wave action.

4.4.6 Two beach pollution incidents were reported by local authorities. During October palm oil residues were washed ashore in varying quantities along a 5-km stretch of shoreline at Hastings. Clearance operations were completed over a 14-day interval. Lewes District Council submitted details of another palm oil incident after clumps of the waxy material were washed ashore along a stretch of Seaford beach. Clearance operations were carried out on five days between 11 November and 12 December and warning notices were erected advising dog owners of the potential hazards to their pets.

4.4.7 In the open sea a rainbow sheen with a gasoline smell was sighted in the south west shipping lane of the English Channel on 10 August.

4.4.8 In addition to the pollution incidents outlined above a POLREP and an EA report referred to an incident in which a number of green 25-litre plastic and steel drums were washed up on a beach at Ryde on the Isle of Wight. Markings suggested these contained benzene alkaline for tank cleaning. Subsequent investigations revealed that the containers had fallen from a broken pallet being loaded aboard the tanker Stavanger Breeze (30,093 gt, built 2004) at Fawley Marine terminal on the previous day.

4.5 South West England (Devon, Cornwall, Isles of Scilly, Channel Islands and the Western Approaches)

4.5.1 Eighteen vessel-source pollution incidents were identified by reporting organisations during 2015 compared with 16 incidents during 2014. Fifteen discharges occurred in ports and harbours, 1 in the open sea, 1 in nearshore waters and there was also a reference to a beach pollution incident. A source of pollution was identified on 16 occasions, the sources including 4 pleasure

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craft, 4 fishing vessels, 2 passenger vessels, a diving charter vessel, an oil products tanker, a research vessel, a dredger and a warship.

4.5.2 Reporting organisations provided details of 2 incidents in the open sea and nearshore waters during 2015. The Royal Research Ship Ernest Shackleton (4,028 gt, built 1995) reported a small gas oil spill from an anti-roll tank in Falmouth Bay on 22 June. A POLREP referred to a slick of light fuel oil curving into Watergate Bay off Newquay on 19 October.

4.5.3 Fifteen oil spills were reported in ports and harbours at Falmouth, Fowey, Padstow, Penzance, Plymouth, St. Helier and Torbay. Falmouth Harbour Commissioners provided reports of 2 pollution incidents during 2015. A split discharge hose from the oil products tanker Wisby Verity (4,295 gt, built 2004) was identified as the cause of a 4-tonne heavy fuel oil spill at Falmouth Docks eastern wharf on 2 June. The oil was contained by boom and recovered by skimmers and absorbents to a reception barge alongside. A small oil sheen was reported after a pleasure craft sank alongside Falmouth’s Fish Strand quay on 16 August.

4.5.4 Fowey Harbour Commissioners submitted details of 2 pollution incidents during 2015. An overflow during a bunkering operation caused a 20-litre diesel spill from the ex-fleet tender Loyal Watcher (12 gt, built 1978). Absorbents were employed in a clean-up operation following a 20-litre hydraulic oil discharge from the grab hopper dredger Lantic Bay (147 gt, built 1958) at Mixtow Reach on 1 July.

4.5.5 Three oil spills were reported in Padstow Harbour. A pleasure craft was believed to have been the source of a light lubrication oil sheen observed in the Inner Harbour on 19 February. A clean-up operation was completed by harbour staff following a diesel discharge from the pleasure craft Nsanga. The clean–up costs were later recovered from the owner of the vessel. Another pleasure craft was identified as the source of a 20-litre lubrication oil spill on 7 June.

4.5.6 On 1 November the 26-metre wooden-hulled converted fishing vessel Jolly Roger (built 1971) sank in the Floating Dock at Penzance causing a spillage of 150 litres of diesel oil and 50 litres of lubrication oil. Clean-up and salvage operations were completed over a two-week interval and the costs were later invoiced to the owner of the vessel.

4.5.7 Four oil pollution incidents were reported at Plymouth during 2015. A clean-up operation was completed at HMNB Devonport following a 2-litre fuel oil discharge from the Duke-class Type 23 frigate HMS Sutherland (built 1996) on 4 February. The Sutton Harbour Company provided details of 3 incidents that occurred during October following diesel oil discharges from fishing vessels. A clean-up operation using mats and booms was completed on each occasion.

4.5.8 The twin-hulled fast catamaran ferry Condor Rapide (5,007 gt, built 1997) was identified as the source of 2 hydraulic oil discharges in Jersey’s St Helier

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Harbour on 15 and 18 November. The pollution dispersed naturally on both occasions and no further actions were required. A Torbay Council report described a one-litre lubrication oil discharge from the passenger vessel Dart Venturer (94 gt, built 1982) on 9 August. A Tier 1 kit was employed by harbour staff in a clean-up operation.

4.5.9 Palm oil residues were washed ashore on beaches in Widemouth Bay during the last week of September. Contractors were engaged to complete clearance operations on Cornwall Council-owned beaches and advice was offered to the owners of private beaches on how to dispose of the substance. In addition warning notices were erected advising dog owners of the potential hazards to their pets.

4.5.10 In addition to the pollution incidents above POLREPS also referred to a lost cargo incident. During rough weather 3 containers were washed overboard from the containership DS Blue Ocean (7,545 gt, built 2007) off Lands End on 19 May. An RVL aircraft was tasked to search for the lost containers but none were sighted.

4.6 Bristol Channel and South Wales (Somerset, Bristol, Gloucestershire,

Monmouthshire, Newport, Cardiff, Vale of Glamorgan, Bridgend, Neath Port Talbot, Swansea, Carmarthenshire and Pembrokeshire)

4.6.1 Eight oil pollution incidents were reported during 2015 compared with 3 incidents during 2014. Five discharges occurred in ports and harbours, 2 in the open sea and 1 in nearshore waters. Sources of pollution were identified on 8 occasions comprising 2 pleasure craft, an oil products tanker, a fishing vessel, a suction dredger, a tug, a passenger vessel and a coastal sailing barge.

4.6.2 A bilge pump-out from a pleasure craft was identified as the source of a light diesel sheen identified in Cardiff Harbour on 26 March. A Natural Resources Wales report to a 50-litre diesel spill after the derelict coastal sailing barge Eben Haezer sank in Cardiff’s Bute East Dock on 23 November. A clean-up operation was completed and the barge was later raised and removed for scrap. The Port of Bridgwater reported a 10-litre diesel oil discharge from the section dredger Arco Dart (1,309 gt, built 1990).

4.6.3 The Milford Haven Port Authority submitted details of 2 incidents at the Port of Pembroke during 2015 and clean-up operations were completed on both occasions. The tug Svitzer Tacu was identified as the source of a 5-litre lubrication oil discharge on 28 March. A defective pressure gauge caused a 5-litre hydraulic oil spill from the Ro-Ro ferry Isle of Inishmore (34,031 gt, built 1997) on 30 March.

4.6.4 In the open sea the yacht Angel reported an 8-litre diesel oil discharge

following a mechanical failure. A leaking stern gland was identified as the cause of a lubrication oil discharge from the oil products tanker Lizrix (1,343 gt, built 2008) on 12 July. The pollution was quickly dispersed by wave action.

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4.6.5 In nearshore waters the 14 metre crabbing vessel CSK ran aground in West Angle Bay at the mouth to Milford Haven on 28 October causing a 10-litre diesel oil discharge. A dive survey revealed damage to the vessel’s hull such that it was not considered safe to refloat and tow to a local berth. Hence the vessel was winched onto a nearby beach and dismantled for disposal ashore.

4.7 Irish Sea (Ceredigion, Gwynedd, Isle of Anglesey, Conwy, Denbighshire, Flintshire, Merseyside, Lancashire, Cumbria, Isle of Man and all Districts of Northern Ireland)

4.7.1 Respondents identified 14 discharges from vessels during 2015 compared with 19 discharges during the previous year. Ten incidents occurred in ports and harbours and 4 in the open sea, estuaries and nearshore waters. A source of pollution was identified on 14 occasions and 6 spills were caused by vessel casualties. Details of accidental releases from oil and gas installations operating in Morecambe Bay are included in the statistics for the UKCS (Refer to 4.11).

4.7.2 Seven incidents were reported in the ports and harbours of north-west

England area during 2015 including 4 oil spills at the port of Liverpool. Booms were deployed following a 20-litre heavy fuel oil discharge from the cruise liner Boudicca (28,551 gt, built 1973) on 5 January. The hopper barge Jan Leeghwater (3,315 gt, built 2010) accidentally discharged 200 litres of light fuel oil into the River Mersey following a collision with a tug. A workboat ran aground and broke up at New Brighton causing a 180-litre diesel oil spillage; a clean-up operation was completed and contractors were engaged to remove the wreck from the beach. The square-rigged sail training brig Zebu (built 1938) sank on her moorings in the Albert Dock on 4 September. An unknown quantity of diesel oil escaped from the vessel until it was raised and refloated 6 weeks later.

4.7.3 Reporting organisations submitted details of 2 diesel oil spills from fishing vessels at Silloth New Dock and a clean-up operation was completed after each. A pleasure craft was identified as the source of a one-litre gearbox oil discharge at Fleetwood’s Wyre Dock on 9 October.

4.7.4 Elsewhere in north-west England the trailing suction hopper dredger Deo Gloria (1,512 gt, built 1978) suffered damage to a stern tube and lost approximately 10 litres of lubrication oil in the open sea off Barrow in Furness. The vessel later made its way to Troon for repairs. A 5-metre clinker boat ran aground in the Ravenglass Estuary causing a 22-litre diesel oil spillage.

4.7.5 Two oil discharges were recorded in the ports and harbours of North Wales

during 2015. A POLREP described a 5-litre diesel oil discharge from the 16- metre wind farm service vessel Offshore Progress (built 2008) in Mostyn Harbour on 27 July. Stena Line Ports and Natural Resources Wales submitted reports of a 25-litre hydraulic oil spill from the high-speed ferry Jonathan Swift (5,992 gt, built 1999) at Holyhead on 7 September. The

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incident was caused by a ruptured hydraulic line and although booms were deployed the pollution dispersed naturally.

4.7.6 Reporting organisations in Northern Ireland and POLREPS identified 3 oil pollution incidents during 2015. The 17-metre wooden twin-rigged stern trawler Silver Dee (63 gt, built 1971) sank following a collision with another fishing vessel off County Down on 29 July. A diesel sheen with an estimated volume of 3.8 litres was later reported above the wreck site by an MCA counter-pollution aircraft. The 9-metre fishing vessel John Boy grounded and tipped over in Strangford Lough on 16 October. An absorbent boom was deployed around the vessel and collected a small amount of oil. In a salvage operation the vessel was pulled upright at low water and later refloated on a flood tide. Three reporting organisations submitted reports of an incident on 14 December after the 17-metre research vessel Ostrea sank alongside a pontoon in Loch Foyle. A boom was placed around the vessel to retain a small quantity of fuel oil.

4.8 Western Scotland (Dumfries and Galloway, Ayrshire, Inverclyde, Argyll & Bute and the Highlands & Islands Region to Cape Wrath)

4.8.1 Reporting organisations submitted details of 20 vessel-source pollution incidents during 2015 compared with 9 during the previous year. Thirteen oil discharges were reported in local ports or harbours and 7 oil discharges in nearshore waters and the open sea. Further analysis of the information contained in annual returns showed 8 references to oil discharges caused by vessel casualties including 2 fishing vessels, 2 pleasure craft, 2 barges and a general cargo ship. Although there were no references to any successful prosecutions brought by the competent authorities against alleged offenders, the costs of clean-up operations and related activities were often charged to the owners of vessels.

4.8.2 The general cargo vessel Lysblink Seaways (7,409 gt, built 2000) ran aground near Kilchoan in the western entrance to the Sound of Mull on 18 February. The vessel remained on the rocky foreshore for 2 days during adverse weather conditions resulting in material damage to its hull. Some fuel tanks were breached resulting in 25 tonnes of marine gas oil entering the water. Booms were deployed around the vessel to contain the pollution. Following salvage and inspection works it was towed to a repair facility at Inchgreen in Greenock. In a second incident on 15 March approximately 14 tonnes of marine diesel were discharged into the Inchgreen Dry Dock from the vessel’s ruptured and damaged fuel tanks. The oil spill had been anticipated and equipment and resources had been deployed in advance by contractors to capture and remove the pollution. The vessel was later declared a constructive total loss and scrapped.

4.8.3 On 20 January the twin-rig trawler Iuda Naofa (198 gt, built 1978) sank in the open sea north of the Butt of Lewis. A number of small surface oil sheens were observed during a search and rescue operation. Booms were deployed after a crane barge capsized and sank at Largs Yacht Haven. A Scottish Environment Protection Agency (SEPA) report provided details of a fuel oil

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leakage from a damaged pleasure craft at Kippford Marina on 4 February. A crane barge under tow capsized in the open sea off Tiree causing a small hydraulic oil spill. An absorbent boom was deployed in Stornoway Harbour to collect an oil sheen after a 5-metre wooden pleasure craft sank in the inner harbour on 6 July. The 18-metre scallop dredger St Apollo (51 gt, built 1979) ran aground on rocks and capsized near Inninmore Bay to the eastern end of the Sound of Mull on 24 August. A slight surface oil sheen was identified which was later broken up and dispersed by wave action. The vessel was declared a constructive total loss and hence all pollutants and contaminants, including 10.5 tonnes of marine diesel oil, were removed from the wreck.

4.8.4 Reporting organisations identified 5 oil discharges from fishing vessels at Lochinver and Stornoway during 2015. Absorbent booms were deployed by crew members following a 150-litre diesel spill from the trawler Mariette Le Roch II (999 gt, built 2004) on 30 December. A Highland Council report and a POLREP described a 50-litre diesel spill from the trawler Mar Mares (409 gt, built 2003) on 10 September. The incident occurred during a bunkering operation and a clean-up operation was completed. Absorbent booms and matting were deployed in another clean-up operation following a 20-litre diesel spill from the trawler Hermanos Busto (220 gt, built 1996) on 18 February. A Stornoway Port Authority report referred to a 10-litre diesel oil discharge from the trawler Northern Star (39 gt, built 1968) whilst the vessel was beached for a maintenance operation. A rapid response by the owner of the vessel ensured that the pollution was quickly contained and removed for disposal ashore.

4.8.5 Elsewhere, a POLREP provided details of a 40-litre crude oil discharge from the oil tanker Ashna A (156,417 gt, built 1999) at the Finnart Oil Terminal in Loch Long. The spill originated from a loading arm and a clean-up operation was completed. A ROV was deployed to help identify the source of 5-litre lubrication oil leak from the RO-RO ferry Loch Shira (1,024 gt, built 2007) berthed in Largs Harbour. The skipper of the Caledonian MacBrayne ferry Loch Seaforth (7,800gt, built 2014) reported a small hydraulic oil discharge during a maintenance operation in Stornoway Harbour on 6 October.

4.8.6 In the open sea the Royal Norwegian Navy frigate Thor Heyerdahl C (built 2009) reported a 100-litre gas oil spill off Tiree on 13 April. The incident occurred during a refuelling operation from a tanker and the pollution was quickly broken up and dispersed by wave action.

4.9 Orkney and Shetland Islands

4.9.1 Respondents identified 9 oil discharges during 2015 compared with 6 discharges during the previous year. Eight incidents occurred in ports and harbours and the sources of discharges included 2 fishing vessels, 2 workboats, a crude oil tanker, a pleasure craft and a tug. Accidental releases from oil installations operating in the West Shetland Basin were included in the statistics for the UKCS (Refer to 4.11).

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4.9.2 Orkney Islands Council Marine Services provided details of 6 incidents in local ports and harbours during 2015. A fishing vessel was identified as the source of a 5-litre fuel oil spill in Kirkwall Harbour on 27 January. A clean-up operation was required following a 10-litre hydraulic oil discharge from the 18-metre wooden hulled trawler Flamborough Light (44 gt, built 1965) at Stromness on 15 June. A pleasure craft was believed to have been the source of a diesel sheen reported in Kirkwall Harbour on 15 July. The salmon tender workboat Robina III reported a 10-litre diesel spill in the same location on 18 November. A clean-up operation was completed following a 10-litre diesel spill from the workboat John Jolly in Kirkwall Harbour.

4.9.3 Shetland Islands Council submitted details of 2 incidents in ports during 2015. Human error during a transfer operation was identified as the cause of a 20-litre diesel oil spill from the tug Dunter (797 gt, built 1996) in Sullom Voe Harbour on 7 July. The pollution was broken up and dispersed by propeller wash. A stern gland leak was identified as the source of a light sheen emanating from the crude oil tanker Navion Oslo (55,756 gt, built 2001) in Sullom Voe on 14 September.

4.9.4 In the open sea a diesel sheen with an estimated volume of 3.8 litres was reported by the Solan installation on 2 August and attributed to an unidentified passing vessel.

4.10 Eastern Scotland (the northern and eastern shores of the Highlands and

Islands Region from Cape Wrath, Moray, Aberdeenshire, Angus, Fife, Lothian and Scottish Borders)

4.10.1 Twelve incidents were recorded by reporting organisations during 2015, six fewer than the previous year’s total. Analysis of incidents by marine environmental zones showed 8 spills occurred in ports and harbours, 2 in the open sea and 2 in nearshore waters. The source of the pollution was identified on 11 occasions, sources comprising 3 fishing vessels, 2 offshore support/supply vessels, a cable laying vessel, a standby safety vessel, a bunker tanker, a cement carrier, a pleasure craft and a semi-submersible rig. At least 4 incidents were known to be caused by vessel casualties.

4.10.2 Aberdeen Harbour Board provided details of 3 discharges during 2015

compared with 4 discharges during 2014. A gust of wind blew a near empty pot of yellow paint off the bulwark of the supply vessel FS Taurus (261 gt, built 1991) and into the harbour at Jamiesons Quay on 2 March. The oil- based paint later dispersed naturally. An overflow from a bunkering point bund was identified as the cause of a 5-litre diesel spillage from the standby safety vessel Vos Grace (1,969 gt, built 2015) at the Regent Quay on 26 July. The supply vessel Skandi Foula (3,252 gt, built 2002) reported an ongoing diesel oil leak whilst berthed alongside the Torry Quay on 10 November. The cause was found to be corrosion in a box cooler contained within a fuel tank. A boom was deployed around the vessel and an internal fuel oil transfer operation was completed to prevent any further seepage. The vessel later entered dry-dock for repairs.

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4.10.3 Elsewhere, reporting organisations recorded 5 oil spills in ports and harbours at Buckie, Cromarty Firth, North Berwick and Peterhead. Moray Council reports referred to 2 diesel oil discharges from unidentified fishing vessels berthed in Buckie Harbour. The Cromarty Firth Port Authority provided details of a 5-litre hydraulic oil discharge from the cable laying vessel Seven Discovery (8,248 gt, built 1990) on 15 May. The resulting surface sheen dispersed naturally and no further actions were required. A POLREP referred to a 10-litre diesel spill from an unidentified vessel in North Berwick Harbour. Absorbent pads were used in a clean-up operation completed by harbour staff. A Tier 2 contractor was engaged to assist in a counter pollution operation in Peterhead Harbour following a gas oil spill from the damaged single-hulled bunker tanker Erin Wood (70 gt). The tanker had earlier collided with a general cargo vessel off Peterhead on 29 August sustaining damage to the port side main cargo tank and wing tank. A boom and absorbent mats were deployed around the vessel whilst the remaining oils were pumped ashore to road tankers.

4.10.4 Two vessel-casualty oil spills were reported in the open sea during 2015. The cement carrier Cemfjord (1,850 gt, built 1984) capsized and sank in heavy seas east of the Pentland Firth on 3 January. A slight sheen was later reported which was dispersed by wave action. A small patch of diesel fuel was reported after the 16-metre wooden-hulled trawler Karinya (built 1982) caught fire and sank north of Rattray Head on 4 October.

4.10.5 Two oil spills were reported in the nearshore waters of eastern Scotland during 2015. An overflow from a settling tank was identified as the cause of a one-litre diesel oil discharge from the semi-submersible rig Deepsea Aberdeen (42,000 gt, built 2014) on 1 April. A POLREP referred to an incident on 26 August after a small pleasure angling vessel hit rocks and sank off Cruden Bay causing a small petrol spillage.

4.11 United Kingdom Continental Shelf

4.11.1 The statistics for this enumeration area were compiled from POLREP reports submitted by the MCA and PON1 reports submitted by DECC. Operators are required to notify DECC where an unauthorised release of oil or chemical to sea, regardless of volume, has occurred. Each incident is reported on a PON1 to DECC’s Offshore Environmental Inspectorate, MCA, the Joint Nature Conservation Committee (JNCC) and Marine Scotland.

4.11.2 DECC reviews every PON1 that is received in order to assess the potential for environmental impact and the need for any counter-pollution response actions. In addition, each incident reported is reviewed to ensure actions are being undertaken to prevent recurrence and to assess whether there has been any contravention of legislation. This is undertaken in accordance with DECC's investigation and enforcement policies.

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4.11.3 Separate data sets have been presented for releases attributed to offshore oil and gas installations and for discharges attributed to vessels, whether identified or not, operating within the UKCS area (Refer to Figure 2).

Oil and gas installations4.11.4 All unplanned releases of oil or chemicals, regardless of volume, must be

notified to the relevant authorities. Releases of operational chemicals being used subsea as part of the exploration and production process may take place over a significant period of time. In some cases it may be many months before remedial work can be undertaken due to the timescales involved in sourcing vessels and equipment to carry out the work. Environmental risk assessments have shown that these events, which are normally of relatively small volume, usually cause negligible impact on the marine environment. Details of all releases, including a cause where known, are listed in Appendix 1 (UKCS oil and gas installations) and further information is provided in Section 3 for those releases of 2 tonnes or more.

4.11.5 A total of 337 oil releases were attributed to oil and gas installations operating in the open sea during 2015 including the west Shetland Basin, Liverpool Bay and off the coast of eastern England. The 2015 annual total was 51 more than the mean annual total of 286 releases reported between 2000 and 2014.

4.11.6 Analysis of oil types showed that 49% of reported releases were identified as

lubrication and hydraulic oils, followed by 19% fuel oils and 9% crude oils. The corresponding statistics from the 2014 survey were 44%, 24% and 10% respectively. Estimated volumes for 339 oil releases were reported (including 3 ongoing releases) and of these 72% were less than 5 litres.

4.11.7 In addition, the authorities were notified of 193 releases of chemical substances during 2015 compared with 217 releases during the previous year. These chemicals are routinely used in oil and gas exploration and production operations and included ammonium bisulphite, barite, bentonite, calcium chloride, chlorine, caustic soda, glycol solutions, hydraulic fluids, methanol, potassium chloride brine and sodium solutions.

4.11.8 The estimated volumes of unpermitted chemical releases ranged from 0.002 kg to 45,254.15 kg and 35 releases (including ongoing releases) were 1 tonne or more. It should be noted, however, that many of the larger discharges associated with operational chemicals being used sub-sea occurred over an extended interval due to the requirement for operators to source vessels and equipment to locate the source of the release and undertake repairs. Further details are provided in Section 3.

4.11.9 Of the total chemicals spilled in 2015 approximately 90% were considered under the OSPAR list of substances used and discharged offshore as Posing Little or No Risk to the Environment (PLONOR). None of the chemicals spilled are included in the OSPAR list of chemicals for priority action, which

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are considered to pose the greatest hazard. None of the spill incidents resulted in a significant environmental impact.

4.11.10 The PON1 reports again indicated that remedial actions were taken by operators following accidental releases. The responses included identification of root causes of spills and improvements in operational control procedures, recommendations concerning preventative actions and carrying out any necessary repairs and modifications to faulty or damaged equipment.

Vessels4.11.11 A further 22 incidents were identified in POLREPS and PON1s. Most

involved surface sheens or thicker oil slicks reported by the nearest offshore installation but attributed to a discharge from a ‘third party’ elsewhere that was generally assumed to have been a passing vessel. The maximum estimated volumes, where known, ranged from 0.00005 tonnes to 1.54 tonnes. In each incident the pollution was believed to have dispersed naturally without posing a threat to wildlife or the coastline. On 1 September the Balmoral installation reported an oil sheen covering an area of 5.12 km2

with an estimated maximum volume of 1.54 tonnes.

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SECTION 5: QUALITY ASSURANCE PLAN ANDACKNOWLEDGEMENTS

5.1 Quality Assurance Plan

As part of a comprehensive quality assurance plan data verification procedures were again applied at all stages during the 2015 survey. For example, other sources of information were consulted and any relevant reports were cross-referenced with the appropriate questionnaire returns.

The approaches for data entry and analysis were clearly shown in the relevant tables and all entries to the enumeration area sub-sets were subject to independent checking to detect any errors. On some occasions unexpected values were confirmed with the various data-sources. Multiple reports were again received from DECC (BEIS from July 2016) and MCA describing accidental discharges from oil and gas installations operating in the UKEEZ. For the remaining discharges from vessels 25% of individual incident reports were compiled from questionnaire returns submitted by two or more reporting organisations which was 6% less than the previous year.

As part of the quality assurance plan the complete database is provided for scrutiny in Appendix 1 thereby enabling stakeholder groups to determine the reliability and accuracy of the survey results. Furthermore, the annual survey reports are made available to all interested parties through the MCA's website (www.dft.gov.uk/mca) and the ACOPS website (www.acops.org.uk).

5.2 Acknowledgements

The Committee is again grateful to the following public agencies and other organisations and their members for their contributions to the survey:

British Ports AssociationConvention of Scottish Local AuthoritiesDepartment of Energy and Climate ChangeEnvironment Agency for EnglandEnglish Inshore Fisheries and Conservation AuthoritiesLocal Government AssociationMaritime & Coastguard Agency’s Counter Pollution and Response TeamNatural Resources WalesNorthern Ireland Environment AgencyRoyal Society for the Prevention of Cruelty to Animals Scottish Environment Protection AgencyScottish Society for the Prevention of Cruelty to AnimalsUnited Kingdom Major Ports Group Limited

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APPENDIX 1

SUMMARY OF REPORTED INCIDENTS

Key to types of vessels

MCT Chemical tanker

MFV Fishing vessel

MSV Offshore supply/support vessel

MT Oil tanker

MV General cargo vessel

PC Pleasure craft

RFA Royal Fleet Auxiliary vessel

RHIB Rigid-hulled inflatable vessel

RO-RO Roll-on roll-off ferry

1: NORTH-EAST ENGLAND (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments

NE/001 24/01/2015 Tetney Monobuoy Oil Crude 1 tonne MT Loch Rannoch Moorings parted, oil dispersed naturally.*NE/002 26/01/2015 Hartlepool Oil Diesel 4 litres Unidentified vessel Oil dispersed naturally. NE/004 06/02/2015 Humber Estuary Oil Hydraulic 30 litres MTUG Svitzer Trimley Oil dispersed naturally. *NE/032 05/05/2015 Berwick Oil Diesel 10 litres MFV Tom Boffin Vessel sank, oil sheen dispersed naturally.*NE/814 15/07/2015 55-25N: 02-46E Oil Waste 0.8 litres Unidentified vessel Reported by the Ensco 121 installation.NE/340 11/08/2015 54-15N: 00-23E Chemical Nk Nk MCT Hanne Theresa Suspected tank washing residues.NE/036 07/09/2015 Immingham Oil Diesel Nk Unidentified vessel Clean-up completed.*NE/011 30/09/2015 Teesport Oil Hydraulic 6 litres MDREDGER Cleveland County Clean-up completed.*NE/016 03/11/2015 Warkworth Harbour Oil Diesel Nk Unidentified vessel Oil dispersed naturally. *NE/822 03/11/2015 53-50N: 00-26W Oil Nk 0.063 litres Unidentified vessel Reported by the Rough 47/3B installation.

2: EASTERN ENGLAND (*Incident not identified by a POLREP) Reference Date Location Category Type Amount Source Comments*EE/041 16/01/2015 Oulton Broad Oil Diesel 2 litres Pleasure craft Clean-up completed.EE/043 09/02/2015 53-07N: 01-10E Oil Hydraulic 10 litres ROV Tether snapped, oil dispersed naturally.EE/048 09/07/2015 Norwich Oil Diesel Nk Residential boat Vessel sank on moorings.*EE/050 11/08/2015 Great Yarmouth Oil Diesel 5 litres Unidentified vessel Sheen dispersed naturally.*EE/549 15/08/2015 Norwich Yacht Station Oil Diesel Nk Pleasure craft Sheen dispersed by propeller wash.*EE/056 11/11/2015 King's Lynn Oil Diesel 5 litres Fishing vessel Sheen dispersed naturally.

3: ESSEX AND KENT (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments*EK/072 10/03/2015 Medway Port Oil Diesel 5 litres PC Khamsin Pleasure craft sank, clean-up completed.EK/091 08/07/2015 50-53N: 01-02E Animal Fish oil Nk Unidentified vessel Suspected tank wash out residues.*EK/092 24/07/2015 Medway Port Oil Diesel 5 litres MTUG Pelikaan Vessel sank on berth, clean-up completed.EK/100 06/10/2015 Port of Dover Oil Sludge 2 litres MV Norwegian Star Clean-up completed.*EK/346 15/12/2015 Port of Ramsgate Oil Bilge Nk PC Lady Kelsey Clean-up completed.

4: SOUTHERN ENGLAND (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments*SE/126 15/01/2015 River Hamble Oil Diesel Nk Pleasure craft Oil dispersed naturally.SE/341 16/01/2015 Southampton Oil Hydraulic 50 litres MV G Poseidon Discharge overboard from damaged machinery.*SE/127 10/03/2015 Weymouth Harbour Oil Hydraulic 40 litres HSC Condor Express Hose failure, clean-up completed.*SE/128 13/01/2015 Littlehampton Harbour Oil Diesel Nk Pleasure craft Sheen dispersed naturally.SE/130 19/03/2015 Shoreham Oil Diesel 1 litre MSV Flatholm Clean-up completed.SE/139 30/03/2015 ABP Southampton Oil Diesel Nk MTUG Asterix Vessel capsized, clean-up completed.SE/137 02/04/2015 Portsmouth Oil Aviation 2 litres HMS St. Albans Bunkering spill, clean-up completed.SE/146 27/04/2015 ABP Southampton Other Soot Nk MT Botofogo Beach clean-up completed.SE/148 15/05/2015 Weymouth Harbour Oil Diesel 500 litres PC Larissa Leaking fuel tank, clean-up completed.*SE/156 03/07/2015 Lymington Oil Diesel Nk PC Juniper Clean-up completed.SE/161 10/08/2015 50-13N: 01-20W Oil Nk Nk Unidentified vessel Sheen dispersed naturally.*SE/164 25/08/2015 Poole Harbour Oil Diesel 3 litres RNLI Lifeboat Refuelling spill, clean-up completed.*SE/168 10/10/2015 Hastings Vegetable Palm oil Nk Unidentified vessel Clearance operation completed.SE/169 28/10/2015 Bridport Harbour Oil Diesel Nk Pleasure craft Oil dispersed naturally.SE/170 04/11/2015 Cowes Harbour Oil Diesel 4 litres MFV Mabuhay Vessel sank on moorings.*SE/171 11/11/2015 Seaford Bay Vegetable Palm oil Nk Unidentified vessel Clearance operation completed.

5: SOUTH-WEST ENGLAND (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source CommentsSW/195 19/02/2015 Padstow Harbour Oil Lubrication 2 litres Pleasure craft Clean-up completed.SW/138 04/04/2015 HMNB Devonport Oil Fuel Nk HMS Sutherland Clean-up completed.*SW/199 13/04/2015 Padstow Harbour Oil Diesel 2 litres PC Nsanga Clean-up completed.*SW/200 08/05/2015 Fowey Harbour Oil Diesel 20 litres MV Loyal Watcher Bunkering spill, clean-up completed.SW/203 02/06/2015 Falmouth Docks Oil Heavy fuel oil 4 tonnes MT Wisby Verity Split discharge hose, clean-up completed.*SW/206 07/06/2015 Padstow Harbour Oil Lubrication 20 litres PC Tess Clean-up completed.*SW/210 22/06/2015 50-03N: 05-00W Oil Gas Nk RRS Ernest Shackleton Oil dispersed naturally.*SW/212 01/07/2015 Fowey Harbour Oil Hydraulic 20 litres MDREDGER Lantic Bay Clean-up completed.*SW/535 09/08/2015 Torbay Oil Lubrication 1 litre MV Dart Venturer Bilge discharge, clean-up completed.*SW/213 16/08/2015 Falmouth Harbour Oil Diesel Nk PC Melissa Michelle Vessel sank, clean-up completed.*SW/546 21/09/2015 Widemouth Bay Vegetable Palm oil Nk Unidentified vessel Clearance operations completed.SW/220 02/10/2015 Sutton Harbour Oil Diesel 15 litres Fishing vessel Clean-up completed.SW/219 05/10/2015 Sutton Harbour Oil Diesel 20 litres Fishing vessel Clean-up completed.*SW/218 20/10/2015 Sutton Harbour Oil Diesel 15 litres Fishing vessel Clean-up completed.SW/226 19/10/2015 50-27N: 05-03W Oil Fuel Nk Unidentified vessel Oil dispersed naturally.SW/228 01/11/2015 Penzance Harbour Oil Diesel 200 litres MFV Jolly Roger Vessel sank, clean-up completed.*SW/234 15/11/2015 St Helier, Jersey Oil Hydraulic 300 litres HSC Condor Rapide Oil dispersed naturally.*SW/235 18/11/2015 St. Helier, Jersey Oil Hydraulic 80 litres HSC Condor Rapide Sheen dispersed naturally.

6: BRISTOL CHANNEL AND SOUTH WALES (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments

BC/248 26/03/2015 Cardiff Harbour Oil Diesel Nk Pleasure craft Suspected bilge pump out.*BC/537 28/03/2015 Pembroke Dock Oil Lubrication 5 litres MTUG Svitzer Tacu Clean-up completed.BC/249 30/03/2015 Pembroke Dock Oil Hydraulic 5 litres MV Isle of Inishmore Clean-up completed.BC/251 13/05/2015 52-05N: 05-01W Oil Diesel 8 litres PC Angel Fuel leak, oil dispersed naturally.BC/252 12/07/2015 51-40N: 05-14W Oil Lubrication Nk MT Lizrix Stern gland leak, oil dispersed naturally.*BC/247 28/09/2015 Bridgwater Oil Diesel 10 litres MDREDGER Arco Dart Clean-up completed.BC/257 28/10/2015 51-41N: 05-06W Oil Diesel 10 litres MFV CKS Vessel ran aground, clean-up completed.*BC/261 23/11/2015 Cardiff Harbour Oil Fuel 50 litres Barge Eben Haezer Vessel sank, clean-up completed.

7: IRISH SEA (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments

IS/277 05/01/2015 Port of Liverpool Oil Heavy fuel 20 litres MV Boudicca Bunkering spill, clean-up completed.IS/343 09/05/2015 54-05: 03-13W Oil Lubrication 10 litres MDREDGER Deo Gloria Damaged stern tube, oil dispersed naturally.IS/286 17/06/2015 Port of Liverpool Oil Fuel 200 litres MDREDGER Jan Leeghwater Minor collision, oil dispersed naturally.IS/287 22/06/2015 Silloth New Dock Oil Diesel 150 litres Fishing vessel Bunkering spill, clean-up completed.IS/290 17/07/2015 Port of Liverpool Oil Diesel 150 litres Workboat Vessel grounded, clean-up completed.IS/292 27/07/2015 Mostyn Harbour Oil Diesel 5 litres Service vessel Offshore Progress Refuelling spill, oil dispersed naturally.IS/293 29/07/2015 54.02N: 05-33W Oil Diesel 3.8 litres MFV Silver Dee Vessel sank, oil dispersed naturally. IS/298 04/09/2015 Port of Liverpool Oil Diesel Nk Tall ship Zebu Vessel sank and later raised and refloated.*IS/300 07/09/2015 Holyhead Oil Hydraulic 25 litres HSC Jonathan Swift Clean-up completed.IS/302 09/10/2015 Fleetwood Habour Oil Lubrication 1 litre PC Wild Goose Clean-up completed.IS/303 16/10/2015 Strangford Lough Oil Diesel Nk MFV John Boy Vessel sank, clean-up completed.*IS/306 01/12/2015 Silloth New Dock Oil Diesel Nk Fishing vessel Bunkering spill, clean-up completed.IS/307 02/12/2015 Ravensglass Estuary Oil Diesel 22 litres Workboat Oil dispersed naturally.IS/310 14/12/2015 Foyle Port Oil Diesel 10 litres Research vessel Ostrea Vessel sank, clean-up completed.

8: WESTERN SCOTLAND (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source CommentsWS/359 20/01/2015 59-13N: 06-33W Oil Nk Nk MFV Luda Naofa Vessel sank, sheen dispersed naturally.WS/278 21/01/2015 Largs Yacht Haven Oil Diesel Nk Crane barge Vessel capsized, clean-up completed.*WS/519 04/02/2015 Kippford Marina Oil Diesel Nk Pleasure craft Vessel sank, sheen dispersed naturally.*WS/363 18/02/2015 Lochinver Harbour Oil Diesel 20 litres MFV Hermanos Busto Bunkering spill, clean-up completed.WS/366 18/02/2015 Kilchoan Oil Marine Gas 25 tonnes MV Lysblink Seaways Vessel ran aground, clean-up completed. WS/373 11/03/2015 Largs Harbour Oil Lubrication 5 litres RO-RO Loch Shira Clean-up completed.WS/375 15/03/2015 Inchgreen Oil Marine diesel 14 tonnes MV Lysblink Seaways Spill in dry dock, clean-up completed.*WS/376 06/04/2015 Kinlochbervie Harbour Oil Hydraulic Nk Unidentified vessel Clean-up completed.*WS/377 06/04/2015 Lochinver Harbour Oil Diesel Nk MFV Roselend Sheen dispersed naturally.WS/378 13/04/2015 56-42N: 07-22W Oil Gas 100 litres HNoMS Thor Heyerdahl C Refuelling spill, oil dispersed naturally.WS/380 08/15/2015 56-25N: 05-29W Oil Oily scum Nk Unidentified vessel Sheen dispersed naturally.WS/381 26/05/2015 56-08N: 07-16W Oil Hydraulic Nk Crane barge Vessel capsized.WS/382 25/06/2015 Finnart Port Oil Crude 40 litres MT Ashna A. Clean-up operation completed.*WS/384 06/07/2015 Stornoway Oil Lubrication 5 litres Pleasure craft Vessel sank, clean-up completed.WS/383 21/07/2015 55-42N: 05-20W Oil Oily water 0.2 litres MV Nexans Skagerrak Oil dispersed naturally.WS/391 24/08/2015 56-30N: 05-41W Oil Nk Nk MFV St Apollo Vessel sank, sheen dispersed naturally.WS/393 10/09/2015 Lochinver Harbour Oil Diesel 50 litres MFV Mar Mares Bunkering spill, clean-up completed.*WS/394 12/09/2015 Stornoway Oil Diesel 10 litres MFV Northern Star Maintenance spill, clean-up completed.*WS/396 06/10/2015 Stornoway Oil Hydraulic Nk RO-RO Loch Seaforth Film dispersed naturally.*WS/403 30/12/2015 Lochinver Harbour Oil Diesel 150 litres MFV Mariette Le Roch II Bunkering spill, clean-up completed.

9: ORKNEY AND SHETLAND ISLANDS (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments*OS/419 27/01/2015 Kirkwall Harbour Oil Fuel 5 litres Fishing vessel Oil dispersed naturally.*OS/422 15/06/2015 Stromness Oil Hydraulic 10 litres MFV Flamborough Light Clean-up completed.*OS/421 07/07/2015 Sullom Voe Oil Diesel 20 litres MTUG Dunter Spill during transfer operation.*OS/423 15/07/2015 Kirkwall Harbour Oil Diesel 5 litres Pleasure craft Oil dispersed naturally.*OS/816 02/08/2015 60-03N: 03-58W Oil Diesel 3.8 litres Unidentified vessel Reported by the Solan installation.*OS/425 14/09/2015 Sullom Voe Oil Lubrication Nk MT Navion Oslo Light sheen dispersed naturally.*OS/426 18/11/2015 Kirkwall Harbour Oil Diesel 10 litres Workboat Robina III Clean-up completed.*OS/428 17/12/2015 Kirkwall Harbour Oil Diesel 10 litres Workboat John Jolly Sheen dispersed naturally.*OS/427 24/12/2015 Stromness Oil Diesel 5 litres Unidentified vessel Sheen dispersed naturally.

10: EASTERN SCOTLAND (*Incident not identified by a POLREP)Reference Date Location Category Type Amount Source Comments

ES/487 03/01/2015 58-41N: 02-32W Oil Nk Nk MV Cemfjord Vessel sank, sheen dispersed naturally.*ES/603 18/02/2015 Buckie Harbour Oil Diesel 20 litres Fishing vessel Clean-up completed.ES/431 02/03/2015 Aberdeen Harbour Other Paint 1 litre MSV FS Taurus Paint dispersed naturally.ES/437 01/04/2015 57-42N: 02-27W Oil Diesel 1 litre Rig Deepsea Aberdeen Clean-up completed.*ES/600 22/04/2015 Buckie Harbour Oil Diesel 20 litres Fishing vessel Clean-up completed.*ES/446 15/05/2015 Cromarty Firth Oil Hydraulic 5 litres MSV Seven Discovery Film dispersed naturally.*ES/455 26/07/2015 Aberdeen Harbour Oil Diesel 5 litres MSV Vos Grace Sheen dispersed naturally.ES/489 01/08/2015 North Berwick Harbour Oil Diesel 10 litres Unidentified vessel Clean-up completed.ES/458 26/08/2015 57-25N: 01-49W Oil Petrol 7 litres PC Amy Vessel sank, petrol evaporated. ES/459 29/08/2015 Peterhead Harbour Oil Gas Nk MT Erin Wood Spill following collision, clean-up completed.ES/464 04/10/2015 58-03N: 01-46W Oil Diesel Nk MFV Karinya Vessel sank, sheen dispersed naturally.ES/468 10/11/2015 Aberdeen Harbour Oil Diesel 100 litres MSV Skandi Foula Fuel tank seepage, clean-up completed.

11: UKCS OIL AND GAS INSTALLATION RELEASESReference Date Location Category Type Amount Source Comments

UKCS/1200 01/01/2015 56-43N : 02-12E Chemical (a) EZ MUL NT 11.5 kg Ensco 102 Drill Floor - Mud Blown from Drillstring UKCS/1201 01/01/2015 57-48N : 00-58W Chemical (b) EC6198A 229.056 kg Buzzard Utilities Platform Entrained Chemicals - Water Injection - LeakUKCS/1202 03/01/2015 58-02N : 01-08E Chemical Transaqua HT2 495 kg Britannia Platform Hydraulics - Open System - Umbilical RuptureUKCS/1203 04/01/2015 57-54N : 00-36W Chemical Transaqua HT22 61 kg Blackford Dolphin Hydraulics - Open System - Fittings / Connections

UKCS/1204 06/01/2015 57-57N : 01-50E Oil Unknown 0.000006 tonnes Armada Platform Spill / Deck Washing - Deck WashingUKCS/1205 08/01/2015 56-44N : 01-17E Oil Hydraulic 0.000027 tonnes Curlew FPSO Subsea Intervention Work - Release During Operation

UKCS/1206 08/01/2015 57-58N : 01-14E Chemical OS16 0.276 kg Chestnut Sevan Hummingbird Storage Tanks etc. - Bund Overflow / Open UKCS/1207 10/01/2015 55-24N : 00-34W Chemical Oceanic HW540 E 600 kg Athena FPSO (BW Athena) Hydraulics - Open System - Solenoid Failure UKCS/1208 11/01/2015 57-00N : 01-17E Oil Diesel 0.238 tonnes Banff FPSO Petrojarl Banff Diesel Systems - Over Filled UKCS/1209 12/01/2015 61-21N : 01-34E Oil Crude 0.008 tonnes Thistle A Platform Xmas Tree - Wave Damage UKCS/1210 14/01/2015 61-16N : 01-35E Oil Diesel 0.05 tonnes Dunlin A Platform Diesel Systems - Pipework Failure UKCS/1211 15/01/2015 57-17N : 02-10E Oil Kerosene 0.05 tonnes Lomond Platform Helifuel - Release during Maintenance UKCS/1212 16/01/2015 56-58N : 01-28E Oil Hydraulic 2.52 tonnes Prospector 5 Release from VesselUKCS/1213 18/01/2015 58-18N : 01-46W Chemical (c) Sodium chloride 24,512 kg Captain WPP'A' Well - Small Subsea Release from Well UKCS/1214 19/01/2015 56-27N : 02-17E Chemical Pelagic 100 3 kg Clyde Platform Subsea Intervention Work - Release During Operation

UKCS/1215 19/01/2015 61-15N : 00-42E Chemical RX-5227 0.05 kg Hudson Subsea Intervention Work - Release During Operation

UKCS/1216 20/01/2015 57-55N : 00-54W Oil Oil based completion fluid 0.22 tonnes Paragon MSS1 Slip Joint - Upper packer FailureUKCS/1217 23/01/2015 55-24N : 00-34W Oil Lubrication 0.07 tonnes Athena FPSO (BW Athena) Turbines, Pumps etc. - Seal Failure UKCS/1218 25/01/2015 58-02N : 01-24E Oil Lubrication 0.1 tonnes Andrew Platform Turbines, Pumps etc. - Seal Failure UKCS/1219 25/01/2015 59-16N : 01-30E Chemical Erifon 818 v2 22 kg Harding Platform Conductor Tensioner - Failure UKCS/1220 25/01/2015 57-11N : 00-59E Chemical TEG 285 kg Gannet A Platform Bursting Disc/PSV - System Overpressured UKCS/1221 26/01/2015 58-13N : 01-06E Oil Hydraulic 0.3 tonnes Balmoral FPV Cranes - Hydraulic System UKCS/1222 27/01/2015 00-12N : 58-17E Chemical FX1459 85 kg Scott JD Platform Storage Tanks etc. - Over Filled UKCS/1223 28/01/2015 59-27N : 01-34E Oil Hydraulic 0.005 tonnes Ocean Patriot ROV AssociatedUKCS/1224 29/01/2015 58-02N : 01-24E Oil Crude 0.000431 tonnes Andrew Platform Valves - Gland / Packing Failure

UKCS/1225 29/01/2015 53-04N : 02-11E Oil Hydraulic 0.04 tonnes Leman BD Platform [SHELL] Wellheads - Hydraulic System UKCS/1226 30/01/2015 58-06N : 01-26W Oil Crude 0.175 tonnes Ross FPSO Bleo Holm FPSOs etc. - Incorrect Routing of Fluids UKCS/1227 31/01/2015 01-09N : 53-42E Chemical Aqualink HT804F ver2 19 kg West Sole WA Main Platform Hydraulics - Open System - Fittings / Connections

UKCS/1228 03/02/2015 57-01N : 01-57E Chemical Methanol (all grades) 2 kg Shearwater C PUQ Platform Chemical Injection - Valve FailureUKCS/1229 03/02/2015 60-18N : 04-16W Chemical Oceanic HW540 v2 416 kg Foinaven - FPSO Petrojarl Hydraulics - Open System - SCM FailureUKCS/1230 05/02/2015 57-57N : 00-54E Oil Crude 0.00252 tonnes Ensco 120 Well Test - Flare Drop Out UKCS/1231 06/02/2015 61-06N : 01-04E Oil Diesel 0.01 tonnes Cormorant A Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1232 07/02/2015 53-27N : 01-43E Oil Waste 0.0015 tonnes Clipper PT Platform Drains System - Overflow of Vessel UKCS/1233 09/02/2015 53-50N : 03-34W Oil Hydraulic 0.002 tonnes Morecambe South DP8 Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1234 10/02/2015 57-45N : 01--48E Oil Diesel 0.000001 tonnes Everest North Platform Oil Transfer Hose (Not Bunkering) - Pinhole Leak

UKCS/1235 10/02/2015 58-25N : 00-20E Oil Diesel 0.002 tonnes Saltire A Platform Diesel Bunkering Hose - Pinhole LeakUKCS/1236 11/02/2015 57-56N : 00-21E Oil Oil based mud 0.02 tonnes Blackford Dolphin Bunkering Hose - Break Away CouplingUKCS/1237 11/02/2015 57-59N : 00-51E Oil Hydraulic 0.00227 tonnes Transocean Prospect ROV - Subsea ReleaseUKCS/1238 12/02/2015 53-45N : 01-04E Oil Hydraulic 0.001 tonnes West Sole WC Platform Cranes - Hydraulic System UKCS/1239 13/02/2015 58-00N : 00-55W Chemical MEG & Stack-Magic ECO-F-v2 9.75 kg Paragon MSS1 Storage (Tanks etc.) - Hydraulic FittingUKCS/1240 18/02/2015 60-51N : 01-28E Oil Crude 0.12 tonnes Ninian Central Platform Vessels (Not Storage) - Total RuptureUKCS/1241 18/02/2015 59-21N : 01-33E Oil Crude 7.2 tonnes Gryphon A Production Vessel FPSOs etc. - Offloading Hose - FailureUKCS/1242 19/02/2015 57-45N : 01--48E Chemical MEG 50 kg Everest North Platform Temporary Equipment - Drain Line Open UKCS/1243 20/02/2015 58-02N : 01-24E Oil Diesel 0.003 tonnes Andrew Platform Diesel Bunkering Hose - Sheared UKCS/1244 21/02/2015 61-07N : 01-44E Oil Diesel 0.00003 tonnes Brent D Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1245 21/02/2015 59-44N : 01-40E Chemical Oceanic 443ND 1,402 kg Bruce PUQ Platform Hydraulics - Open System - SCM Failure UKCS/1246 22/02/2015 57-04N : 00-53E Oil Lubrication 0.002 tonnes Guillemot West(Triton) FPSO Turbines, Pumps etc. - Valve Open UKCS/1247 22/02/2015 61-05N : 01-43E Oil Diesel 0.002 tonnes Brent C Platform Drains System - Pipework Failure UKCS/1248 23/02/2015 58-27N : 00-15E Oil Waste 0.000025 tonnes Piper B Platform Pipework - Pinhole Leak UKCS/1249 23/02/2015 59-16N : 01-30E Oil Hydraulic 0.2 tonnes Harding Platform Hydraulics - Closed system - Umbilical Rupture UKCS/1250 25/02/2015 57-05N : 00-57E Oil Hydraulic 0.25 tonnes Ocean Guardian Bunkering Hose - Total Rupture UKCS/1251 26/02/2015 59-44N : 01-40E Oil Waste 0.000019 tonnes Bruce Phase II Platform Drains System - Overflow of Vessel

UKCS/1252 01/03/2015 58-18N : 01-46W Chemical WAW85202 2.82 kg Captain WPP'A' Chemical Bunkering Hose Parted from CouplingUKCS/1253 01/03/2015 58-00N : 00-55W Chemical MEG & Stack-Magic ECO-F-v2 21.17 kg Paragon MSS1 Storage (Tanks etc.) - Hydraulic Fitting UKCS/1254 01/03/2015 57-11N : 00-59E Oil Crude 0.0005 tonnes Gannet A Platform Valves - Valve Failure UKCS/1255 02/03/2015 59-16N : 01-30E Chemical Erifon 818 v2 36 kg Harding Platform Valves - Valve Failure UKCS/1256 02/03/2015 57-05N : 00-53E Chemical TEG 563 kg Guillemot West(Triton) FPSO Fixed Chemical Pipework FailureUKCS/1257 04/03/2015 59-16N : 01-30E Chemical Erifon 818 v2 23 kg Harding Platform Entrained Chemicals - Water Injection - Leak UKCS/1258 05/03/2015 58-19N : 00-41E Oil Crude oil in produced water 0.0001 tonnes MacCulloch FPSO Vessels (Not Storage) - Over Filled UKCS/1259 06/03/2015 58-18N : 01-46W Oil Diesel 0.009 tonnes Captain WPP'A' Diesel Bunkering Hose Parted from CouplingUKCS/1260 07/03/2015 58-00N : 00-22W Oil Hydraulic 0.044 tonnes Goldeneye Platform Pipework - Small Bore Fittings UKCS/1261 07/03/2015 57-09N : 02-17E Chemical Transaqua HT2 16,240 kg Pierce FPSO (Haewene Brim) Hydraulics - Open System - Fittings / Connections

UKCS/1262 08/03/2015 56-44N : 01-17E Oil Hydraulic 0.004 tonnes Curlew FPSO Pipework - Small Bore Fittings UKCS/1263 08/03/2015 58-11N : 00-08E Chemical Pelagic 100 79.05 kg WilHunter Pipework - Release From Joint UKCS/1264 09/03/2015 61-28N : 01-31E Chemical Stack-Magic 3% & MEG l2% 577 kg Stena Spey BOP (Subsea) - POD Failure UKCS/1265 10/03/2015 61-14N : 01-08E Oil Hydraulic 0.000824 tonnes Cormorant North Platform Cranes - Hydraulic SystemUKCS/1266 11/03/2015 54-02N : 00-43E Oil Lubrication 0.00172 tonnes Cleeton Compression Platform Turbines, Pumps etc - Seal Failure UKCS/1267 11/03/2015 57-11N : 00-59E Oil Crude 0.00006 tonnes Gannet A Platform Wireline - Stuffing Box FailureUKCS/1268 12/03/2015 56-44N : 01-17E Oil Hydraulic 0.042517 tonnes Curlew FPSO Turbines, Pumps etc. - Pipework Failure UKCS/1269 12/03/2015 61-14N : 01-22E Chemical Transaqua HT2 1,500 kg Fionn subsea tieback Hydraulics - Open System - Fittings / Connections

UKCS/1270 14/03/2015 53-32N : 03-34W Chemical Hazardous open drains water 0.02 kg Douglas DD Platform Drains System - Overflow of Vessel UKCS/1271 14/03/2015 61-16N : 01-35E Chemical Calcium chloride brine 2,798 kg Dunlin A Platform Bunkering Hose - Sheared UKCS/1272 14/03/2015 57-39N : 01-08E Chemical Oceanic HW443ND 0.5 kg Nelson Platform Transfer Hose (not bunkering) - Pin Hole Leak UKCS/1273 14/03/2015 58-06N : 01-26W Chemical Gyptron SD140 398.79 kg Ross FPSO Bleo Holm Temporary Equipment - Pipework Failure UKCS/1274 15/03/2015 60-51N : 01-28E Chemical CRW85733 0.025 kg Ninian Central Platform Fixed Chemical Pipework (Utility Chemicals) - Pinhole Leak

UKCS/1275 15/03/2015 57-17N : 01-21E Chemical Stack-Magic mix & glycol/water mixes 88.7 kg Sedco 711 BOP (Subsea) - POD FailureUKCS/1276 15/03/2015 53-57N : 00-33E Chemical Aqualink HT804F ver2 600 kg Minerva Platform Hydraulic Manifold/Control Panel - Valve Failure UKCS/1277 17/03/2015 61-07N : 01-44E Oil Hydraulic 0.0015 tonnes Brent D Platform Cranes - Hydraulic SystemUKCS/1278 17/03/2015 53-05N : 02-07E Oil Lubrication 0.210384 tonnes Leman AD1 Platform [SHELL] Entrained Oil - Utility Systems Discharge

UKCS/1279 18/03/2015 60-51N : 01-28E Chemical Oceanic HW540 v2 45,254.15 kg Ninian Central Platform Hydraulics - Open System - SCM Failure UKCS/1280 18/03/2015 60-48N : 01-44E Oil Lubrication 0.000015 tonnes Alwyn North NAA Platform Spilled - During Manual OperationsUKCS/1281 18/03/2015 59-44N : 01-40E Oil Unknown 0.000002 tonnes Bruce PUQ Platform Sheen Observed - Source Unknown UKCS/1282 19/03/2015 53-32N : 03-34W Oil Diesel 0.1 tonnes Douglas DD Platform Diesel Systems - Failure of EquipmentUKCS/1283 19/03/2015 57-22N : 01-59E Oil Diesel 0.000008 tonnes Ensco 101 Diesel Bunkering Hose - Hose Parted from Coupling

UKCS/1284 19/03/2015 53-27N : 01-43E Oil Condensate 0.0001 tonnes Clipper PT Platform Hydraulics - Closed System - Umbilical RuptureUKCS/1285 20/03/2015 56-43N : 02-12E Oil Hydraulic 0.000437 tonnes Jasmine WHP Valves - Gland / Packing FailureUKCS/1286 20/03/2015 53-36N : 01-31W Oil Hydraulic 0.004 tonnes PB Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1287 20/03/2015 57-19N : 01-04E Oil Hydraulic 0.00005 tonnes Gannet D Subsea Completion Hydraulics - Closed system - Fittings / Connections

UKCS/1288 20/03/2015 60-48N : 01-44E Oil Diesel 0.01372 tonnes Alwyn North NAA Platform Diesel Bunkering Hose Parted from CouplingUKCS/1289 21/03/2015 57-19N : 01-04E Chemical Methanol (all grades) 90 kg Gannet D Subsea Completion Subsea Chemical Systems - Umbilical Rupture UKCS/1290 21/03/2015 57-04N : 00-53E Chemical Brayco Micronic SV3 316.4 kg Guillemot West(Triton) FPSO Hydraulics - Closed system - Umbilical Rupture UKCS/1291 21/03/2015 59-16N : 01-30E Chemical Erifon 818 v2 19.5 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1292 24/03/2015 58-11N : 00-08E Oil Hydraulic 0.005 tonnes WilHunter ROV - Subsea Release UKCS/1293 27/03/2015 60-41N : 02-32W Oil Lubrication 0.0005 tonnes Clair Phase 1 Platform Turbines, Pumps etc. - Seal FailureUKCS/1294 28/03/2015 58-27N : 00-15E Chemical Roquest FS 165 kg Piper B Platform Spill - Knocked Over / Dropped UKCS/1296 29/03/2015 57-57N : 00-54W Chemical Methanol (all grades) 5,301.71 kg Golden Eagle W Platform Storage Tanks etc. - Drain Line Open UKCS/1297 29/03/2015 60-56N : 02-53W Oil Hydraulic 0.002 tonnes West Phoenix Lifeboat - Hydraulic System UKCS/1298 30/03/2015 56-47N : 02-09E Chemical Versatherm LTOBM 293 kg Maersk Resilient Drill Floor - Top Drive UKCS/1299 30/03/2015 57-56N : 00-21E Oil Oil based mud 0.0411 tonnes Blackford Dolphin Below Drill Floor to Riser Pollution Pans Overflow

UKCS/1300 31/03/2015 57-01N : 01-57E Chemical Oil based mud 25 kg Hans Deul Temporary Equipment - Failure of EquipmentUKCS/1301 01/04/2015 58-21N : 00-52E Oil Diesel 0.0002 tonnes Donan FPSO Global Producer III Diesel Bunkering Hose - Pinhole LeakUKCS/1302 01/04/2015 57-57N : 00-54W Chemical Sodium hypochlorite 5-15.5% 173.14 kg Golden Eagle PUQ Platform Storage Tanks etc. - Drain Line Open UKCS/1303 03/04/2015 57-09N : 02-17E Oil Hydraulic 0.005 tonnes Pierce FPSO (Haewene Brim) Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1304 03/04/2015 61-02N : 01-07E Oil Crude 0.000015 tonnes Pelican Manifold Xmas Tree - Release at Injection Point UKCS/1305 04/04/2015 60-56N : 02-53W Oil Hydraulic 0.011 tonnes West Phoenix ROV - Subsea Release UKCS/1306 04/04/2015 60-03N : 03-58W Chemical RO IM B221 & RO HY M738 2.36 kg Solan Platform Entrained Chemicals - Water Injection - Leak

UKCS/1307 05/04/2015 58-22N : 00-52E Chemical Castrol Transaqua HT2 50 kg Donan FPSO Global Producer III Turbines, Pumps etc - Seal Failure UKCS/1308 06/04/2015 60-37N : 01-39E Oil Crude 0.0036 tonnes Dunbar Platform Wellheads - Spill Whilst Topping up AnnulusUKCS/1309 07/04/2015 58-00N : 00-55W Chemical Environ32 1.35 kg Paragon MSS1 ROV - Subsea Release UKCS/1310 08/04/2015 53-01N : 01-47E Oil Condensate 0.01 tonnes Hewett 48/29 A Platform Flaring / Venting - Vent Line Drop Out UKCS/1311 13/04/2015 56-24N : 02-03E Oil Crude 0.005 tonnes Auk A Platform Pipework - Seal FailureUKCS/1312 13/04/2015 60-57N : 00-56E Oil Waste 0.02 tonnes Heather A Platform Turbines, Pumps etc - Seal FailureUKCS/1313 13/04/2015 60-18N : 04-16W Chemical Methanol (all grades) 500 kg Foinaven - FPSO Petrojarl Subsea Chemical Systems - Fittings / Connections

UKCS/1314 13/04/2015 59-32N : 01-32E Oil Lubrication 0.74 tonnes Beryl A Platform Storage (Hydraulic Oils, Lube Oils) - Over Filled UKCS/1315 13/04/2015 58-26N : 00-15W Chemical Pelagic 100 1,267 kg Claymore A Platform Hydraulics - Open System - Fittings / Connections

UKCS/1316 14/04/2015 58-19N : 00-41E Oil Crude 2 tonnes MacCulloch FPSO FPSOs etc. - Incorrect Routing of FluidsUKCS/1317 14/04/2015 58-21N : 00-52E Chemical Methanol 0.8 kg Donan FPSO Global Producer III Fixed Chemical Pipework Release From Joint UKCS/1318 14/04/2015 58-18N : 01-44W Oil Hydraulic 0.000003 tonnes Captain FPSO Vessel RelatedUKCS/1319 14/04/2015 57-22N : 01-59E Oil Hydraulic 0.007 tonnes Mungo Production Manifold Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1320 15/04/2015 58-06N : 00-41E Chemical RX-5227 & RX-9022 0.008 kg HDT Hercules (Vessel) Subsea Chemical Systems - Umbilical Rupture UKCS/1321 15/04/2015 58-06N : 00-04E Oil Tellus T32 1.5 kg EDT Hercules ROV Release - Third Party UKCS/1322 16/04/2015 54-02N : 00-43E Chemical Methanol 20 kg Cleeton CW Wellhead Tower Chemical Injection - Small Bore Fittings UKCS/1323 16/04/2015 58-27N : 00-15E Chemical Pelagic 100 550 kg Piper B Platform Hydraulics - Open System - Fittings / Connections

UKCS/1324 17/04/2015 57-22N : 01-22E Chemical Pelagic 100 200 kg Arbroath Platform Hydraulics - Open System - Solenoid Failure UKCS/1325 17/04/2015 53-32N : 03-34W Chemical Unknown 0.21 kg Douglas Platform Sheen Observed - Source Unknown UKCS/1326 17/04/2015 57-01N : 01-57E Chemical EC1389B 914.8 kg Shearwater C PUQ Platform Entrained Chemicals - Utility System UKCS/1327 18/04/2015 59-44N : 01-40E Oil Hydraulic 0.000006 tonnes Bruce CR platform Turbines, Pumps etc - Hydraulic System UKCS/1328 21/04/2015 53-01N : 01-47E Oil Condensate 0.002 tonnes Hewett 48/29 A Platform Valves - Valve Failure UKCS/1329 21/04/2015 61-03N : 01-42E Chemical M-I WATE (All Grades) 100 kg Brent B Platform Vent Line - Flow During Operational Use UKCS/1330 22/04/2015 53-25N : 02-22E Chemical MEG 1,595.3 kg Ensco 92 Below Drill Floor to Riser / Conductor - Flowline Failure

UKCS/1331 22/04/2015 53-41N - 03-32W Oil Crude 0.001 tonnes Douglas FPSO OSB FPSOs etc. - Offloading Hose - Failure UKCS/1332 23/04/2015 60-51N : 01-28E Oil Hydraulic 0.4 tonnes Ninian Central Platform Turbines, Pumps etc - Valve Failure UKCS/1333 23/04/2015 60-04N : 02-05W Oil Hydraulic 0.005 tonnes Sedco 714 ROV - Subsea Release

UKCS/1334 24/04/2015 58-21N : 00-52E Oil Kerosene 0.015 tonnes Donan FPSO Global Producer III Helifuel - Spilled Whilst Filling UKCS/1335 25/04/2015 53-05N : 02-32E Oil Hydraulic 0.00045 tonnes Thames AW Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1336 27/04/2015 60-54N : 01-25E Oil Crude 0.02 tonnes Ninian Northern Platform Pipework - Total Rupture UKCS/1337 27/04/2015 60-24N : 04-03W Oil Hydraulic 0.05 tonnes Deepsea Aberdeen ROV AssociatedUKCS/1338 27/04/2015 58-21N : 00-52E Chemical Transaqua HT2 8,780 kg Donan FPSO Global Producer III Hydraulics - Open System - Fittings / Connections

UKCS/1339 30/04/2015 60-37N : 01-39E Oil Hydraulic 0.012 tonnes Dunbar Platform Transfer Hose (Not Bunkering) – Total Rupture UKCS/1340 01/05/2015 54-12N : 02-27E Oil Diesel 0.0184 tonnes Caister Diesel Systems - Pinhole LeakUKCS/1341 02/05/2015 60-57N : 00-56E Oil Crude 0.1 tonnes Heather A Platform Valves - Valve Failure UKCS/1342 05/05/2015 57-43N : 00-50E Oil Oily water 0.0003 tonnes Forties FC Platform Drains System - Pipework Failure UKCS/1343 05/05/2015 57-01N : 01-57E Oil Lubrication 0.02 tonnes Shearwater C PUQ Platform Drains System - Overflow of Deck DrainsUKCS/1344 05/05/2015 56-29N : 02-09E Oil Unknown 0.00079 tonnes Fulmar A Platform Hydraulics - Open System - Umbilical Rupture UKCS/1345 10/05/2015 57-17N : 02-10E Oil Condensate 0.015 tonnes Lomond Platform Vessels (Not Storage) - Drain Line Open UKCS/1346 10/05/2015 57-22N : 01-59E Oil Hydraulic 0.000008 tonnes Ensco 101 Hydraulics - Closed system - Fittings / Connections

UKCS/1347 12/05/2015 61-05N : 01-43E Oil Diesel 0.00227 tonnes Brent C Platform Diesel Systems - Failure of EquipmentUKCS/1348 13/05/2015 56-43N : 02-12E Oil Unknown 0.03 tonnes Jasmine LQ Entrained Oil - Utility System UKCS/1349 13/05/2015 56-44N : 01-17E Chemical Flotreat DF 3159 9 kg Curlew FPSO Storage Tanks etc. - Over Filled UKCS/1350 13/05/2015 53-36N : 01-31E Oil Hydraulic 0.03 tonnes Barque PB Wellheads - Hydraulic System UKCS/1351 14/05/2015 56-27N : 02-17E Oil Diesel 0.00732 tonnes Clyde Platform Diesel Bunkering Hose - Pinhole LeakUKCS/1352 14/05/2015 60-24N : 04-03W Chemical (d) Potassium chloride brine 1,857.16 kg Deepsea Aberdeen Subsea Pump Seal FailureUKCS/1353 15/05/2015 60-51N : 01-28E Oil Diesel 0.015 tonnes Ninian Central Platform Diesel Systems - Over Filled

UKCS/1354 15/05/2015 58-04N : 00-59E Oil Hydraulic 0.0001 tonnes Transocean Prospect BOP Crane - Failed 'O' ring on hydraulic oil hose connection

UKCS/1355 15/05/2015 53-03N : 02-14E Chemical Foamatron V-502 1 kg Leman G Platform [PERENCO] Transfer Hose (Not Bunkering) - Pinhole Leak UKCS/1356 18/05/2015 60-48N : 01-26E Chemical Oceanic HW540 E 1,105 kg Ninian Southern Platform Hydraulics - Closed system - Valve Failure UKCS/1357 19/05/2015 61-27N : 01-31E Chemical Castrol Transaqua HT2 65 kg DSW P07 ( S14 ) Hydraulics - Open System - Fittings / Connections

UKCS/1358 19/05/2015 58-18N : 01-46W Chemical Water based mud (KCL polymer) 524.11 kg Captain WPP'A' Storage (Tanks etc.) - Over Filled UKCS/1359 19/05/2015 53-50N : 03-34W Oil Hydraulic 0.002 tonnes Morecambe South AP1 Platform Turbines, Pumps etc. - Pump Failure UKCS/1360 20/05/2015 53-32N : 03-34W Chemical Oceanic HW540 E 50 kg Hamilton A Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1361 22/05/2015 57-22N : 01-59E Oil Mineral 0.00001 tonnes Mungo Wether Well 169 Wireline - Stuffing Box Failure UKCS/1362 22/05/2015 57-57N : 01-50E Chemical Castrol HT2N 157 kg Armada Platform Hydraulics - Closed system - Valve Failure UKCS/1363 23/05/2015 61-27N : 01-31E Chemical Castrol Transaqua HT2 132 kg Don South West - SSC Subsea Intervention Work - Release During Operation

UKCS/1364 23/05/2015 53-27N : 01-43E Oil Hydraulic 0.0005 tonnes Clipper PC Platform Cranes - Hydraulic SystemUKCS/1365 24/05/2015 57-10N : 00-55E Oil Hydraulic 0.003 tonnes Gannet B Subsea Completion Subsea Intervention Work - Release During Operation

UKCS/1366 24/05/2015 60-57N : 00-56E Oil Diesel 0.000885 tonnes Heather A Platform Diesel Bunkering Hose - Pinhole LeakUKCS/1367 26/05/2015 61-16N : 00-55E Oil Diesel 0.063 tonnes Tern Platform Diesel Systems - Over Filled UKCS/1368 26/05/2015 61-27N : 01-31E Chemical Corrosion inhibitor CK990 1 kg Don South West - SSC Subsea Intervention Work - Release During Operation

UKCS/1369 27/05/2015 56-43N : 02-12E Oil Waste 0.000021 tonnes Jasmine WHP Sheen Observed - Unknown Source UKCS/1370 27/05/2015 57-11N : 00-59E Oil Hydraulic 0.001 tonnes Gannet C Subsea Completion Subsea Chemical Systems - Fittings / Connections

UKCS/1371 27/05/2015 60-24N : 04-03W Oil Hydraulic 0.005 tonnes Deepsea Aberdeen ROV - Subsea ReleaseUKCS/1372 29/05/2015 56-29N : 02-09E Oil Diesel 0.002 tonnes Fulmar A Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1373 29/05/2015 61-07N : 01-44E Oil Diesel 0.000003 tonnes Brent D Platform Diesel Systems - Over Filled UKCS/1374 30/05/2015 59-32N : 01-32E Oil Crude 0.05 tonnes Beryl A Platform Offloading Hose - Release on Connection UKCS/1375 31/05/2015 61-14N : 01-08E Oil Hydraulic 0.01314 tonnes Cormorant North Platform Fixed Chemical Pipework (Utility Chemicals) - Sheared

UKCS/1376 31/05/2015 57-48N : 00-58W Oil Hydraulic 0.00025 tonnes Buzzard Production Platform Cranes - Hydraulic System UKCS/1377 02/06/2015 57-09N : 02-17E Chemical Castrol Transaqua HT2 130 kg Pierce FPSO (Haewene Brim) Subsea Intervention Work - Release During Operation

UKCS/1378 02/06/2015 58-18N : 01-46W Chemical Oceanic HW540 E 1,381 kg Captain WPP'A' Hydraulics - Closed system - Fittings / Connections

UKCS/1379 02/06/2015 53-43N : 01-13E Chemical Corrtreat 7368 1,257 kg Newsham Template Subsea Chemical Systems - SCM Failure UKCS/1380 03/06/2015 57-58N : 01-51E Chemical Transaqua HT2N 5,509 kg Armada Platform Hydraulics - Open System - Fittings / Connections

UKCS/1381 03/06/2015 59-16N : 01-30E Chemical Erifon 818 v2 17.5 kg Harding Platform Conductor Tensioner - Seal FailureUKCS/1382 08/06/2015 60-41N : 02-32W Oil Crude 0.00275 tonnes Clair Phase 1 Platform Pipeline - Residual Oil UKCS/1383 08/06/2015 59-16N : 01-30E Chemical Erifon 818 v2 10.5 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1384 10/06/2015 53-03N : 02-14E Chemical MEG/Water Mixes & CRW85689 6,791 kg Leman AP Platform [PERENCO] Pipework - Release From Joint UKCS/1385 11/06/2015 57-57N : 00-54E Oil Hydraulic 0.00872 tonnes MV Normand Progress Vessel RelatedUKCS/1386 11/06/2015 60-37N : 01-39E Chemical (e) TETRACIDE D 18,974.95 kg Dunbar Platform Drains - Water Based Chemicals UKCS/1387 11/06/2015 60-37N : 01-39E Oil Waste 0.004 kg Dunbar Platform Drains - Water Based Chemicals

UKCS/1388 12/06/2015 57-30N : 01-33E Oil Unknown 0.00005 tonnes Blackford Dolphin Spill - Deck Washing UKCS/1389 12/06/2015 53-24N : 01-22E Chemical MEG (all dilutions) 0.01 kg Lancelot Platform Chemical Injection - Small Bore FittingsUKCS/1390 12/06/2015 53-24N : 01-22E Oil Hydraulic 0.001 tonnes Lancelot Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1391 12/06/2015 53-32N : 03-34W Oil Lubrication 0.0001 tonnes Douglas DD Platform Jacking System - Gearbox Release UKCS/1392 12/06/2015 61-14N : 01-22E Chemical Transaqua HT2 600 kg Fionn Subsea Tieback Hydraulics - Open System - SCM Failure UKCS/1393 13/06/2015 53-50N : 00-26W Oil Hydrocarbon grease 0.000005 tonnes Rough BD Platform Spill - Deck Washing UKCS/1394 13/06/2015 57-55N : 00-54W Chemical Transaqua HT2 42.82 kg Paragon MSS1 Hoses (Subsea) - Hydraulic HoseUKCS/1395 14/06/2015 59-16N : 01-30E Chemical Erifon 818 v2 17.5 kg Harding Platform Conductor Tensioner - Seal FailureUKCS/1396 15/06/2015 57-17N : 01-39E Oil Diesel 0.00001 tonnes Marnock ETAP PDR Platform Diesel Bunkering Hose Parted from Coupling UKCS/1397 15/06/2015 60-48N : 01-44E Oil Produced water 0.132041 tonnes Alwyn North NAA Platform Entrained Oil - Release from JointUKCS/1398 16/06/2015 56-43N : 01-18E Oil Unknown 0.000018 tonnes Curlew FPSO Sheen Observed - Unknown SourceUKCS/1399 17/06/2015 57-43N : 00-54E Oil Waste 0.007 tonnes Forties FD Platform Drains System - Release During Operation UKCS/1400 17/06/2015 58-19N : 00-41E Chemical RX-7020 145.6 kg MacCulloch West Drill Centre Decommissioning Related UKCS/1401 17/06/2015 53-13N : 02-49E Vegetable Rapeseed oil 2.2 tonnes Sean RD Platform Annulus - Annular CommunicationUKCS/1402 19/06/2015 61-02N : 01-07E Oil Crude 0.000015 tonnes Pelican Manifold Tree - Small Subsea Release UKCS/1403 21/06/2015 59-16N : 01-30E Chemical Erifon 818 v2 10 kg Harding Platform Conductor Tensioner - Failure UKCS/1404 21/06/2015 60-24N : 04-03W Chemical Erifon HD603HP (No Dye) 0.06 kg Deepsea Aberdeen Hose (Topsides, Not Bunkering) - Total Rupture UKCS/1405 21/06/2015 61-03N : 01-42E Oil Waste 0.00612 tonnes Brent B Platform Drains - Oil Based to Non-Recoverable UKCS/1406 21/06/2015 56-58N : 01-28E Oil Other 0.044 tonnes Prospector 5 Mud pump cooler failed due to seawater corrosion

UKCS/1407 22/06/2015 60-56N : 02-53W Oil Hydraulic 0.0025 tonnes West Phoenix ROV - Subsea ReleaseUKCS/1408 22/06/2015 59-44N : 01-40E Oil Lubrication 0.000003 tonnes Bruce PUQ Platform Turbines, Pumps etc. - Seal Failure UKCS/1409 22/06/2015 53-39N : 00-54E Oil Hydraulic 0.000035 tonnes Rose Subsea Wellhead ROV - Subsea Release UKCS/1410 23/06/2015 60-24N : 04-03W Oil Hydraulic 0.0001 tonnes Deepsea Aberdeen ROV - Subsea Release UKCS/1411 23/06/2015 60-24N : 04-03W Chemical Erifon HD603HP (No Dye) 1.9134 kg Deepsea Aberdeen BOP (Subsea) - BOP Accumulator UKCS/1412 23/06/2015 54-18N : 02-37E Oil Mineral 0.001275 tonnes Wingate Entrained Oil - Oil System UKCS/1413 24/06/2015 58-13N : 01-06E Oil Crude 0.367 tonnes Balmoral FPV Subsea Pipelines - Pipework Failure UKCS/1414 25/06/2015 57-42N : 01-01E Chemical (f) M-I GEL SUPREME 5 kg Forties FE Platform Annulus - Annular Communication

UKCS/1415 25/06/2015 61-16N : 00-55E Oil Crude 0.03 tonnes Tern Platform Transfer Hose (Not Bunkering) - Release From Joint

UKCS/1416 26/06/2015 53-03N : 02-14E Oil Diesel 0.0005 tonnes Leman AX Platform [PERENCO] Diesel Systems - Pinhole LeakUKCS/1417 28/06/2015 60-18N : 04-16W Chemical (g) Oceanic HW540 v2 253 kg W22 FTP basket at DC2 Hydraulics - Open System - SCM Failure UKCS/1418 29/06/2015 57-25N : 01-13E Oil Versatherm 0.004 tonnes Sedco 711 Below Drill Floor to Riser Pollution Pans Overflow

UKCS/1419 29/06/2015 57-48N : 00-58E Oil Hydraulic 0.0001 tonnes Buzzard Production Platform Cranes - Hydraulic System UKCS/1420 30/06/2015 56-50N : 02-15E Oil Oily water 0.0005 tonnes Jade Steel Platform Drains System - Pipework FailureUKCS/1421 01/07/2015 53-03N : 02-14E Oil Hydraulic 0.002 tonnes Leman AQ Platform [PERENCO] Cranes - Hydraulic System UKCS/1422 01/07/2015 60-41N : 02-32W Oil Waste 0.00275 tonnes Clair Phase 1 Platform Drains System - Overflow of Deck Drains UKCS/1423 02/07/2015 53-57N : 03-40W Oil Hydraulic 0.0005 tonnes Morecambe North Platform Cranes - Hydraulic SystemUKCS/1424 02/07/2015 53-27N : 01-43E Oil Diesel 0.0004 tonnes Clipper PT Platform Diesel Bunkering Hose - Break Away CouplingUKCS/1425 02/07/2015 53-42N : 01-09E Chemical Aqualink HT804F ver2 625 kg Hoton Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1426 03/07/2015 61-29N : 01-27E Oil Diesel 0.3168 tonnes Don SW&W Don Northern Producer Diesel Systems - Failure of Equipment UKCS/1427 04/07/2015 57-19N : 02-07E Chemical HR-4L & G+35% SSA-1 1,096.72 kg GSF Galaxy II Cement Slurry DischargeUKCS/1428 05/07/2015 60-24N : 04-03W Chemical Potassium chloride 11 kg Deepsea Aberdeen Drill Floor - Mud Bucket UKCS/1429 05/07/2015 60-18N : 04-16W Chemical Oceanic HW540 v2 1 kg Foinaven - FPSO Petrojarl Hydraulics - Open System - Fittings / Connections

UKCS/1430 05/07/2015 60-18N : 04-16W Chemical Oceanic HW540 v2 36.57 kg Foinaven - FPSO Petrojarl Hydraulics - Open System - Fittings / Connections

UKCS/1431 07/07/2015 57-11N : 00-59E Oil Waste 0.0008 tonnes Gannet A Platform Drains System - Overflow of Deck Drains UKCS/1432 07/07/2015 57-04N : 00-53E Chemical Cortron CK929-G 20 kg Guillemot West(Triton) FPSO Subsea Chemical Systems - Fittings / Connections

UKCS/1433 08/07/2015 57-43N : 00-54E Oil Diesel 0.009 tonnes Forties FD Platform Diesel Systems - Pinhole Leak UKCS/1434 09/07/2015 53-03N : 01-41E Oil Hydraulic 0.02 tonnes Hewett 48/29 B Platform Hydraulic Manifold / Control - Seal Failure UKCS/1435 09/07/2015 60-08N : 01-42E Chemical Oceanic HW740R 20 kg Rhum Installation 1 Bursting Disc/PSV - Failure UKCS/1436 10/07/2015 61-16N : 01-35E Chemical TEG & CRW85733 133.967 kg Dunlin A Platform Entrained Chemicals - Utility System UKCS/1437 10/07/2015 59-16N : 01-30E Oil Lubrication 0.005 tonnes Harding Platform Spill - During Manual Operations UKCS/1438 11/07/2015 60-56N : 02-53W Chemical Pelagic 50 BOP fluid concentrate 147.42 kg West Phoenix BOP (Subsea) - Hydraulic Fitting UKCS/1439 12/07/2015 60-20N : 04-05W Chemical Castrol Transaqua HT2 69 kg Island Constructor Wellheads - Release From JointUKCS/1440 12/07/2015 60-48N : 01-44E Oil Sludge 0.001238 tonnes Alwyn North NAB Platform Drainage System - Overflow of Deck DrainsUKCS/1441 13/07/2015 59-44N : 01-40E Oil Unknown 0.01 tonnes Bruce D Platform Sheen Observed - Unknown Source

UKCS/1442 13/07/2015 58-19N : 00-43E Chemical Preservan 5500 18 kg MacCulloch FPSO Decommissioning Related UKCS/1443 13/07/2015 60-56N : 02-53W Chemical (i) Potassium chloride brine 1,356.31 kg West Phoenix Slip Joint - Total Packer FailureUKCS/1444 13/07/2015 58-19N : 00-43E Chemical Preservan 5500 65.8 kg MacCulloch FPSO Decommissioning Related UKCS/1445 13/07/2015 58-19N : 00-43E Chemical Preservan 5500 33.1 kg MacCulloch FPSO Decommissioning Related UKCS/1446 13/07/2015 58-19N : 00-43E Chemical Preservan 5500 68.2 kg MacCulloch FPSO Decommissioning Related UKCS/1447 14/07/2015 58-18N : 01-46W Chemical Potassium chloride brine 13,770 kg Captain WPP'A' Pipework - Pinhole Leak UKCS/1448 15/07/2015 53-05N : 02-07E Oil Jet fuel A1 0.002 tonnes Leman AD1 Platform [SHELL] Transfer Hose (Not Bunkering) - Pinhole LeakUKCS/1449 15/07/2015 58-52N : 01-31E Chemical Oceanic HW443ND 995.1 kg Brae East Platform Hydraulics - Closed system - Fittings / Connections

UKCS/1450 17/07/2015 56-29N : 02-09E Oil Waste 0.096 tonnes Fulmar A Platform Spill - Deck Washing UKCS/1451 17/07/2015 53-27N : 01-20E Oil Hydraulic 0.03 tonnes Excalibur A Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1452 17/07/2015 58-17N : 00-12E Chemical (j) EC6202A 711.706 kg Scott Subsea Structure C Subsea Chemical Systems - Fittings / Connections

UKCS/1453 19/07/2015 57-22N : 01-59E Oil Crude 0.00008 tonnes Ensco 101 Hose (Topsides, Not Bunkering) - Open to Environment

UKCS/1454 19/07/2015 58-19N : 00-43E Chemical Preservan 5500 8.03 kg MacCulloch FPSO Decommissioning Related UKCS/1455 19/07/2015 53-50N : 00-26W Oil Unknown 0.000008 tonnes Rough CD Platform Sheen Observed - Unknown Source UKCS/1456 19/07/2015 56-29N : 02-09E Oil Diesel 0.005 tonnes Fulmar A Platform Diesel Systems - Failure of Equipment UKCS/1457 20/07/2015 59-16N : 01-30E Chemical Erifon 818 v2 25 kg Harding Platform Subsea Intervention Work - Release During Operation

UKCS/1458 22/07/2015 60-21N : 04-04W Oil Hydraulic 0.00044 tonnes Olympic Challenger Subsea Intervention Work - Release During Operation

UKCS/1459 23/07/2015 57-54N : 00-35W Oil Crude 0.02 tonnes Ettrick FPSO Aoka Mizu Drains System - Overflow of Deck DrainsUKCS/1460 24/07/2015 59-16N : 01-30E Chemical Erifon 818 v2 1 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1461 24/07/2015 60-03N : 03-58W Oil Lubrication 0.0000115 tonnes Solan Platform Drains System - Overflow of Deck DrainsUKCS/1462 26/07/2015 60-41N : 02-32W Chemical Transaqua HT2 1 kg Clair Phase 1 Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1463 26/07/2015 53-50N : 00-26W Oil Unknown 0.000147 tonnes Rough BP Platform Drains System - Overflow of Vessel UKCS/1464 27/07/2015 59-16N : 01-30E Chemical Hyspin AWH-M-15 50 kg Harding Platform Transfer Hose (Not Bunkering) - Pinhole Leak UKCS/1465 27/07/2015 61-14N : 01-08E Oil Crude 0.0425 tonnes Cormorant North Platform Drains System - Pipework FailureUKCS/1466 30/07/2015 57-17N : 01-39E Oil Produced water 0.00301356 tonnes Marnock ETAP PDR Platform Turbines, Pumps etc. - Seal Failure UKCS/1467 01/08/2015 59-16N : 01-30E Chemical Erifon 818 v2 15 kg Harding Platform Conductor Tensioner - Seal FailureUKCS/1468 01/08/2015 61-08N : 00-47E Chemical (k) Calcium bromide brine 854 kg Transocean John Shaw Riser - Release Whilst Installing / Retrieving

UKCS/1469 02/08/2015 61-02N : 01-42W Oil Lubrication 0.00004 tonnes Brent A Platform Drains System - Pipework Failure UKCS/1470 03/08/2015 53-32N : 03-34W Chemical Oceanic HW540 E 65 kg Douglas DD Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1471 05/08/2015 60-41N : 02-32W Oil Oily water 0.00092 tonnes Clair Phase 1 Platform Turbines, Pumps etc. - Vent Line Drop OutUKCS/1472 05/08/2015 60-03N : 03-58W Oil Unknown 0.058 tonnes Solan Platform Sheen Observed - Unknown SourceUKCS/1473 05/08/2015 59-55N : 01-17E Oil Hydraulic 0.000087 tonnes Skandi Arctic ROV - Subsea Release UKCS/1474 06/08/2015 60-18N : 04-16W Chemical SOURTREAT SR45 140 kg Foinaven - FPSO Petrojarl Chemical Bunkering Hose - Total RuptureUKCS/1475 07/08/2015 59-32N : 01-32E Chemical Oceanic HW 443 9,369 kg Beryl Alpha Hydraulics - Open System - SCM Failure UKCS/1476 07/08/2015 53-39N : 02-03E Oil Hydraulic 0.00089 tonnes Tethys Platform Hydraulics - Closed system - Valve FailureUKCS/1477 08/08/2015 53-57N : 03-40W Oil ULS marine fuel 0.0005 tonnes Morecambe North Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1478 08/08/2015 53-32N : 01-21E Oil Hydraulic 0.15 tonnes Galahad Platform Diesel Systems - Pinhole Leak UKCS/1479 09/08/2015 53-41N : 03-32W Chemical HW540E 0.1 kg Douglas FPSO OSB Hydraulics - Open System - Fittings / Connections

UKCS/1480 10/08/2015 53-32N : 03-34W Chemical Cortron® RN-617 1,000 kg Douglas DD Platform Drains - Water Based Chemicals UKCS/1481 10/08/2015 60-36N : 01-48E Chemical TROS 518 418.51 kg Ellon Manifold Subsea Chemical Systems - Fittings / Connections

UKCS/1482 10/08/2015 57-00N : 01-50E Chemical Sodium hypochlorite with copper ions 51.168 kg Elgin PUQ platform Pipework leakage supplying biocide to seawater lift pumps

UKCS/1483 11/08/2015 55-00N : 01-50E Oil Hydraulic 0.0102 tonnes Prospector 5 Drill Floor - Top Drive UKCS/1484 11/08/2015 53-42N : 01-09E Chemical Aqualink HT804F ver2 146 kg Hoton Platform Drains - Water Based Chemicals UKCS/1485 12/08/2015 58-02N : 01-08E Oil Diesel 0.1 tonnes Britannia Platform Transfer Hose (Not Bunkering) - Open to Environment

UKCS/1486 12/08/2015 53-50N : 00-26W Oil Hydraulic 0.000211 tonnes Rough BP Platform Cranes - Hydraulic SystemUKCS/1487 13/08/2015 59-16N : 01-30E Chemical Erifon 818 v2 36 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1488 14/08/2015 60-24N : 04-03W Chemical Erifon HD 603 E 0.03 kg Deepsea Aberdeen BOP (Subsea) - Hydraulic FittingUKCS/1489 14/08/2015 61-16N 00-55E Oil Diesel 0.04 tonnes Tern Platform Diesel System - Storage OverfillUKCS/1490 14/08/2015 58-17N : 00-12E Oil Waste 0.0042 tonnes Scott JU Platform Spill - Deck Washing UKCS/1491 15/08/2015 59-44N : 01-40E Oil Oily water 0.0006 tonnes Bruce D Platform Drains System - Overflow of Deck DrainsUKCS/1492 16/08/2015 61-06N : 01-04E Chemical MEG 7.5 kg Cormorant A Platform Turbines, Pumps etc. - Seal FailureUKCS/1493 17/08/2015 56-46N : 00-46W Chemical DF1 25 kg Ensco 100 Hose (Topsides, not Bunkering) - Seal Failure UKCS/1494 18/08/2015 56-29N : 02-09E Oil Crude 0.1 tonnes Fulmar A Platform Transger Hose (Not Bunkering) - Hose Parted from Coupling

UKCS/1495 18/08/2015 56-50N : 02-10E Chemical Transaqua HT2 170 kg Kessog Subsea Intervention Work - Release During Operation

UKCS/1496 18/08/2015 61-17N : 00-55E Chemical Pelagic 100 158.1 kg Hudson Hydraulics - Open System - SCM Failure UKCS/1497 19/08/2015 57-39N : 01-08E Oil Diesel 0.0025 tonnes Nelson Platform Diesel Systems - Failure of Equipment UKCS/1498 20/08/2015 61-16N : 00-55E Oil Lubrication 0.02 tonnes Tern Platform Turbines, Pumps etc. - Pipework Failure UKCS/1499 20/08/2015 60-51N : 01-28E Chemical (l) Oceanic HW540 v2 20,290.89 kg Strathspey Manifold Hydraulics - Open System - Fittings / Connections

UKCS/1500 21/08/2015 59-44N : 01-40E Oil Hydraulic 0.0000536 tonnes Bruce D Platform Turbines, Pumps etc. - Seal Failure UKCS/1501 21/08/2015 60-44N : 02-29W Oil Diesel 0.00082 tonnes Clair Ridge QU Platform Diesel Systems - Spilled Whilst Filling UKCS/1502 22/08/2015 57-22N : 01-59E Oil Hydraulic 0.0002188 tonnes Mungo Production Manifold Bursting Disc/PSV - Failure UKCS/1503 22/08/2015 58-02N : 01-08E Oil Diesel 0.1 tonnes Britannia Platform Diesel Systems - Pinhole Leak UKCS/1504 22/08/2015 61-29N : 01-35E Chemical (m) CLAIRSOL 370 268.06 kg Paul B Lloyd Jnr Slip Joint - Choke / Kill Manifold UKCS/1505 22/08/2015 58-18N : 01-46W Oil Crude 0.0000895 tonnes Captain WPP'A' Wellheads - Release From Joint UKCS/1506 22/08/2015 59-44N : 01-40E Oil Diesel 0.0000225 tonnes Bruce D Platform Lifeboats - Diesel System UKCS/1507 22/08/2015 61-07N : 01-44E Oil Lubrication 0.001 tonnes Brent D Platform Overflowed bund containing oily residueUKCS/1508 22/08/2015 57-09N : 01-38E Chemical Stack-Magic ECO-F v2 & MEG 0.132 kg Sedco 711 Hoses (Subsea) - Hydraulic Hose UKCS/1509 23/08/2015 57-11N : 00-12E Chemical Castrol Transaqua HT2 69.12 kg Well Enhancer Hydraulics - Closed system - Fittings / Connections

UKCS/1510 24/08/2015 57-45N : 01-48E Oil Diesel 0.001296 tonnes Everest North Platform Diesel Systems - Spilled Whilst Filling UKCS/1511 25/08/2015 61-14N : 01-48E Chemical Corroless CCI 250 821.02 kg Cormorant North Platform Storage (Tanks etc.) - Drain Line Open UKCS/1512 25/08/2015 54-02N : 00-43E Chemical Aqualink HT804F ver2 100 kg Minerva Platform Bursting Disc/PSV - Failure UKCS/1513 26/08/2015 58-06N : 00-41E Chemical EDC 99DW 105 kg Blackford Dolphin Pit Valves - FailureUKCS/1514 27/08/2015 58-13N : 01-06E Chemical Methanol (all grades) 59.4 kg Balmoral FPV Subsea Chemical Systems - Valve Failure UKCS/1515 27/08/2015 60-03N : 03-58W Oil Unknown 0.0001 tonnes Solan Platform Spill - During Manual Operations UKCS/1516 28/08/2015 59-16N : 01-30E Oil Hydraulic 0.23 tonnes Harding Platform Hydraulics - Closed system - Umbilical RuptureUKCS/1517 29/08/2015 59-16N : 01-30E Chemical Erifon 818 v2 22.5 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1518 31/08/2015 60-21N : 04-03W Chemical (n) MEG 30,340.78 kg Schiehallion Subsea Clusters Subsea Pipelines - Release From Joint

UKCS/1519 31/08/2015 59-32N : 01-32E ChemicalCement contaminated with OPF base

oil 100 kg Beryl Alpha Drains - Water Based ChemicalsUKCS/1520 31/08/2015 58-02N : 01-08E Chemical TRASAR TRAC103 249 kg Britannia Platform Storage Tanks etc. - Over Filled UKCS/1521 01/09/2015 60-25N : 04-03W Chemical Erifon HD603HP (no dye) 0.2 kg Deepsea Aberdeen Slip Joint - Lower Packer FailureUKCS/1522 01/09/2015 57-39N : 01-08E Chemical Castrol Hyspin AWH 46 1 kg Nelson Platform Cranes - Hydraulic System

UKCS/1523 01/09/2015 57-57N : 00-54W Oil Diesel 0.00189 tonnes Golden Eagle PUQ Platform Diesel Systems - Over Filled UKCS/1524 02/09/2015 60-48N : 01-44E Oil Diesel 0.0006 tonnes Alwyn North NAA Platform Failure of Drains Line UKCS/1525 02/09/2015 60-20N : 04-03W Oil Hydraulic 0.0003 tonnes Schiehallion FPSO Olympic Challenger Subsea Intervention Work - Release During Operation

UKCS/1526 03/09/2015 61-14N : 01-08E Oil Crude 0.000862 tonnes Cormorant North Platform Wellheads - Release From Joint UKCS/1527 03/09/2015 58-06N : 00-41E Chemical EDC 99-DW 20 kg Blackford Dolphin Slip Joint - Upper packer FailureUKCS/1528 05/09/2015 53-57N : 03-40W Chemical Oceanic HW443 R 91 kg Millom East PLEM Hydraulics - Open System - SCM Failure UKCS/1529 06/09/2015 57-00N : 01-50E Oil Hydraulic 0.009 tonnes Elgin PUQ platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1530 06/09/2015 61-14N : 01-08E Oil Hydraulic 0.00498236 tonnes Cormorant North Platform Pipework - Total Rupture UKCS/1531 07/09/2015 53-50N : 03-34W Oil Diesel 0.00012 tonnes Morecambe South CPP1 Diesel Bunkering Hose - Hose Parted from Coupling

UKCS/1532 07/09/2015 61-07N : 01-44E Oil Diesel 1.1 tonnes Brent D Platform Diesel Systems Failure UKCS/1533 08/09/2015 61-37N : 01-18E Oil Unknown 0.001 tonnes Magnus Platform Sheen Observed - Unknown Source UKCS/1534 08/09/2015 60-03N : 03-58W Oil Synthetic mud 0.00006 tonnes Ocean Valiant Drill Floor - Seal FailureUKCS/1535 08/09/2015 56-23N : 02-15E Oil Waste 0.0001 tonnes Janice A FPU Spill - During Manual Operations UKCS/1536 09/09/2015 60-03N : 03-58W Chemical (o) RO HY C350 corrosion inhibitor 0.603428kg Solan Platform Entrained Chemicals - Water Injection - Leak UKCS/1537 09/09/2015 58-43N : 01-24E Oil Diesel 0.034 tonnes Miller Platform Diesel Systems - Failure of Equipment UKCS/1538 09/09/2015 57-04N : 02-04E Oil Hydraulic 0.0014 tonnes Byford Dolphin ROV - Subsea Release UKCS/1539 10/09/2015 61-07N : 01-44E Oil Diesel 0.0005 tonnes Brent D Platform Diesel Systems - Over Filled UKCS/1540 11/09/2015 61-16N : 01-35E Oil Hydraulic 0.045 tonnes Dunlin A Platform Temporary Equipment - Failure of Equipment UKCS/1541 11/09/2015 57-04N : 02-04E Chemical Stack-Magic ECO-F v2 8 kg Byford Dolphin Leak on Control PadUKCS/1542 12/09/2015 57-57N : 00-54W Oil Waste 0.372 tonnes Golden Eagle PUQ Platform Drains System - Overflow of Vessel UKCS/1543 13/09/2015 60-03N : 03-58W Oil Synthetic mud 0.000000001 tonnes Ocean Valiant Sheen Observed - Unknown Source UKCS/1544 13/09/2015 60-24N : 04-03W Chemical Erifon HD603HP (no dye) 0.16 kg Deepsea Aberdeen BOP (Subsea) - Hydraulic FittingUKCS/1545 15/09/2015 58-18N : 01-42W Chemical Oceanic HW540 E 1,940 kg Captain WPP'A' Hydraulics - Open System - Fittings / Connections

UKCS/1546 15/09/2015 58-05N : 03-09W Oil Diesel 0.018350147 tonnes Beatrice C Platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1547 15/09/2015 58-06N : 00-41E Chemical Stack-Magic ECO-F v2 130 kg Blackford Dolphin Hydraulics - Closed system - SCM Failure UKCS/1548 16/09/2015 61-05N : 01-43E Oil Waste 0.003 tonnes Brent C Platform Drains System - Overflow of Vessel UKCS/1549 17/09/2015 58-06N : 00-41E Chemical Stack-Magic ECO-F v2 57 kg Blackford Dolphin BOP (Subsea) - POD Failure

UKCS/1550 18/09/2015 58-18N : 01-42W Chemical Oceanic HW540 E 2,041 kg Captain WPP'A' Hydraulics - Open System - SCM Failure UKCS/1551 19/09/2015 60-03N : 03-58W Chemical (p) RO HY M738 12.38 kg Solan Platform Entrained Chemicals - Utility System UKCS/1552 19/09/2015 53-57N : 03-40W Oil Hydraulic 0.0001 tonnes Morecambe North Platform Drains System - Pipework Failure UKCS/1553 20/09/2015 56-29N : 02-09E Oil Waste 0.00007 tonnes Fulmar A Platform Drains System - Pipework Failure UKCS/1554 20/09/2015 60-03N : 03-58W Oil Lubrication 0.0001 tonnes Solan Platform Drains System - Overflow of Deck Drains UKCS/1555 20/09/2015 61-16N : 01-35E Oil Hydraulic 0.009 tonnes Dunlin A Platform Temporary Equipment - Failure of EquipmentUKCS/1556 22/09/2015 57-11N : 00-59E Oil Diesel 0.0001 tonnes Gannet A Platform Diesel Systems - Failure of Equipment UKCS/1557 22/09/2015 54-34N : 02-17E Oil Diesel 0.000007 tonnes Cygnus QU Platform Generator integral bund overflow UKCS/1558 22/09/2015 59-16N : 01-30E Chemical Erifon 818 v2 47 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1559 25/09/2015 60-25N : 04-03W Chemical (q) Clairsol 370 10.677 kg Deepsea Aberdeen Below Drill Floor to Riser / Conductor - Diverter UKCS/1560 25/09/2015 61-07N : 01-44E Oil Diesel 0.000054 tonnes Brent D Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1561 25/09/2015 60-37N : 01-39E Oil Waste 0.96 tonnes Dunbar Platform Spill - Deck Washing UKCS/1562 25/09/2015 60-03N : 03-58W Chemical RX-5227 & RX-9022 0.0002 kg Solan Platform Entrained Chemicals - Utility System UKCS/1563 26/09/2015 58-06N : 00-41E Oil Hydraulic 0.00025 tonnes Blackford Dolphin ROV Release - Third Party UKCS/1564 27/09/2015 60-41N : 02-32W Oil Waste 0.0025 tonnes Clair Phase 1 Platform Drains System - Pipework Failure UKCS/1565 27/09/2015 60-51N : 01-28E Chemical CRW85733 & Fluorodye UC 311 kg Ninian Central Platform Entrained Chemicals - Utility System UKCS/1566 29/09/2015 56-41N : 02-20E Oil Waste 0.037 tonnes Judy Platform Drains System - Overflow of Deck DrainsUKCS/1567 30/09/2015 61-23N : 01-44E Oil Diesel 0.00224 tonnes Murchison Platform Diesel Bunkering Hose - Pinhole Leak UKCS/1568 30/09/2015 51-17N : 01-39E Oil Crude 0.003075 tonnes Marnock ETAP PDR Platform Spill - During Manual Operations UKCS/1569 30/09/2015 56-24N : 02-03E Oil Lubrication 1.145 tonnes Auk A Platform Entrained Oil - Utility System UKCS/1570 01/10/2015 58-17N : 00-12E Chemical (r) EC6202A 47.358 kg Scott Subsea Structure A Subsea Chemical Systems - Valve FailureUKCS/1571 01/10/2015 53-32N : 02-00E Oil Condensate 0.228 tonnes LOGGS GGS Production Platform Pipework - Release at Injection Point UKCS/1572 01/10/2015 53-32N : 02-00E Chemical Methanol 194 kg LOGGS GGS Production Platform Pipework - Release at Injection Point UKCS/1573 03/10/2015 61-03N : 01-42E Chemical (s) Proxel XL2 16.90475 kg Brent B Platform Spill - Bund Overflow / OpenUKCS/1574 04/10/2015 54-02N : 00-43E Chemical Aqualink HT804F Ver2 1 kg Cleeton CW Wellhead Tower Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1575 04/10/2015 60-51N : 01-28E Oil Diesel 0.3 tonnes Ninian Central Platform Diesel Systems - Seal FailureUKCS/1576 04/10/2015 60-56N : 02-53W Oil Hydraulic 0.00174 tonnes West Phoenix Hose (Topsides, Not Bunkering) - Hose Parted from Coupling

UKCS/1577 04/10/2015 56-44N : 01-17E Oil Unknown 0.00001 tonnes Curlew FPSO Sheen Observed - Unknown Source UKCS/1578 05/10/2015 61-07N : 01-44E Oil Diesel 0.001 tonnes Brent D Platform Diesel Systems - Spilled Whilst Filling UKCS/1579 05/10/2015 57-17N : 01-39E Oil Hydraulic 0.0016 tonnes Marnock ETAP PDR Platform Valves - Valve Failure UKCS/1580 06/10/2015 57-57N : 00-54W Oil Crude 0.000105 tonnes Golden Eagle W Platform Drains System - Overflow of Vessel UKCS/1581 07/10/2015 61-01N : 01-41E Oil Hydraulic 0.0012 tonnes Brent VASP Flaring / Venting - Vent Line Drop Out UKCS/1582 07/10/2015 53-11N : 02-51E Oil Waste 0.0002 tonnes Sean PD Platform Drains - Oil Based to Non-Recoverable UKCS/1583 09/10/2015 60-20N : 04-02W Oil Hydraulic 0.00062 tonnes Olympic Challenger ROV - Subsea Release UKCS/1584 09/10/2015 61-16N : 00-55E Chemical RBW85178 31.8 kg Tern Platform Transfer Hose (Not Bunkering) - Hose Parted from Coupling

UKCS/1585 10/10/2015 60-20N : 04-02W Oil Hydraulic 0.00044 tonnes Olympic Challenger ROV - Subsea Release UKCS/1586 10/10/2015 57-45N : 01-48E Chemical TEG 300 kg Everest North Platform Fixed Chemical Pipework - Total Rupture UKCS/1587 10/10/2015 53-57N : 03-40W Oil Hydraulic 0.0005 tonnes Morecambe North Platform Storage (Hydraulic Oils, Lube Oils) - Over Filled UKCS/1588 11/10/2015 54-02N : 00-43E Oil Waste 0.01 tonnes Cleeton CPQ Platform Drains System - Overflow of VesselUKCS/1589 11/10/2015 58-18N : 01-44W Oil Diesel 0.009 tonnes Captain FPSO Diesel Bunkering Hose - Hose Parted from Coupling

UKCS/1590 11/10/2015 60-37N : 01-39E Oil Hydraulic 0.04 tonnes Dunbar Platform Vessel Related UKCS/1591 15/10/2015 57-09N : 02-17E Oil Unknown 0.0012 tonnes Pierce FPSO (Haewene Brim) Sheen Observed - Unknown Source UKCS/1592 16/10/2015 56-46N : 00-46W Chemical Anvol CF22 1,738 kg Ensco 100 Leak from Diverter flow line seals UKCS/1593 16/10/2015 58-17N : 00-12E Chemical (t) Foamtreat 1.532 kg Scott JD Platform Subsea Chemical Systems - Fittings / Connections

UKCS/1594 16/10/2015 57-01N : 01-57E Oil Lubrication 0.00013 tonnes Shearwater C PUQ Platform Spill - Deck Washing UKCS/1595 17/10/2015 60-37N : 01-39E Oil Well effluent 0.82 tonnes Dunbar Platform Crude contaminated seawater from MPPA cooler

UKCS/1596 17/10/2015 58-30N : 01-15E Oil Hydraulic 0.0334565 tonnes Tiffany Platform Turbines, Pumps etc. - Seal Failure UKCS/1597 19/10/2015 60-51N : 01-28E Oil Crude * Ninian Central Platform *UKCS/1598 19/10/2015 59-44N : 01-40E Oil Weathered oil 0.000001 tonnes Bruce PUQ Platform Spill - Deck Washing UKCS/1599 19/10/2015 53-49N : 00-28E Oil Hydraulic 0.000001 tonnes Rough AP Platform Cranes - Hydraulic SystemUKCS/1600 21/10/2015 57-22N : 01-22E Chemical Pelagic 100 (H) 150 kg Arbroath Platform Hydraulics - Open System - Failure of Equipment

UKCS/1601 21/10/2015 53-18N : 02-34E Oil Lubrication 0.02 tonnes Inde AC Platform (PERENCO) Spill - During Manual Operations UKCS/1602 21/10/2015 58-41N : 01-16E Chemical Oceanic HW443ND 1,006 kg Brae A Platform Hydraulics - Open System - Fittings / Connections

UKCS/1603 22/10/2015 60-41N : 02-32W Chemical DEG (all grades) 2.39 kg Clair Phase 1 Platform Entrained Chemicals - Utility System

UKCS/1604 22/10/2015 61-03N : 01-42E Chemical MEG (all grades) 0.22 kg Brent B Platform Entrained Chemicals - Utility System UKCS/1605 23/10/2015 61-16N : 00-55E Chemical (u) EPT-2093 47.6 kg Tern Platform Failed Water Injection FlowlineUKCS/1606 24/10/2015 60-51N : 01-28E Oil Diesel 0.01 tonnes Ninian Central Platform Diesel Systems - Spilled Whilst Filling UKCS/1607 24/10/2015 61-07N : 01-44E Oil Hydraulic 0.00001 tonnes Brent D Platform ROV - Subsea Release UKCS/1608 25/10/2015 57-48N : 00-58W Oil Diesel 0.0000092 tonnes Buzzard Utilities Platform Diesel Bunkering Hose - Open to Environment UKCS/1609 26/10/2015 58-02N : 01-02E Oil Diesel 0.05 tonnes Alba FSU Diesel Bunkering Hose - Total Rupture UKCS/1610 26/10/2015 56-11N: 02-47E Oil Crude 0.013384 tonnes Alma FPSO - EnQuest Producer Loss of integrity between tanksUKCS/1611 29/10/2015 63-03N : 01-42E Chemical (v) MEG (all grades) 26.4 kg Brent B Platform Temporary Equipment - Failure of Equipment UKCS/1612 30/10/2015 60-18N : 04-16W Chemical MacDarmid HW540 10 kg Foinaven - FPSO Petrojarl Subsea Chemical Systems - SCM Failure UKCS/1613 30/10/2015 60-18N : 04-16W Oil Hydraulic 0.15 tonnes Foinaven - FPSO Petrojarl Subsea Chemical Systems - SCM Failure UKCS/1614 31/10/2015 58-18N : 01-42W Oil Diesel 0.000885 tonnes Captain WPP'A' Diesel Bunkering Hose - Hose Parted from Coupling

UKCS/1615 02/11/2015 58-25N : 00-15W Chemical (w) OSW85797 3.94 kg Claymore South WI Template Entrained Chemicals - Water Injection - LeakUKCS/1616 03/11/2015 59-32N : 01-32E Oil Condensate 0.008 tonnes Beryl A Platform Diesel Systems - Pipework Failure UKCS/1617 03/11/2015 58-13N : 01-06E Oil Hydraulic 0.0436 tonnes Balmoral FPV Cranes - Hydraulic System UKCS/1618 04/11/2015 59-44N : 01-40E Oil Unknown 0.0000012 tonnes Bruce PUQ Platform Sheen Observed - Unknown SourceUKCS/1619 04/11/2015 56-41N : 02-20E Chemical Corrosion inhibitor 1.68 kg Judy Platform Chemical Injection - System OverpressurisedUKCS/1620 05/11/2015 61-03N : 01-42E Oil Oily water 0.00098 tonnes Brent B Platform Drains - Oil Based to Non-Recoverable UKCS/1621 07/11/2015 58-13N : 01-06E Oil Crude 0.05827 tonnes Balmoral FPV Subsea Pipelines - Pipework FailureUKCS/1622 09/11/2015 57-45N : 01-48E Oil Condensate 0.55 tonnes Everest North Platform Drains System - Overflow of Vessel UKCS/1623 10/11/2015 57-00N : 01-50E Chemical Castrol Brayco Micronic SV/3 144 kg Elgin PUQ platform Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1624 10/11/2015 58-27N : 00-15E Chemical (x) OSW85797 451 kg Piper B Platform Subsea Pipelines - Pipework FailureUKCS/1625 15/11/2015 60-37N : 01-39E Chemical MEG 65% 330 kg Dunbar Platform Spill - Bund Overflow / Open UKCS/1626 15/11/2015 60-25N : 04-03W Chemical Erifon HD603HP (no dye) 0.02 kg Deepsea Aberdeen Below Drill Floor to Riser / Conductor - Diverter UKCS/1627 17/11/2015 57-22N : 01-59E Chemical (y) Clairsol 370 1.26 kg Ensco 101 Pipework - Release From JointUKCS/1628 19/11/2015 58-12N : 00-16E Oil Hydraulic 0.0126 tonnes Paragon MSS1 ROV - Subsea Release UKCS/1629 19/11/2015 56-11N : 02-47E Oil Hydraulic 0.0000132 tonnes Alma FPSO - EnQuest Producer FPSOs etc. - Turret Hydraulics / BearingsUKCS/1630 20/11/2015 57-11N : 00-59E Oil Waste 0.0032 tonnes Gannet A Platform Drains System - Overflow of Deck Drains

UKCS/1631 20/11/2015 59-32N : 01-32E Oil Unknown 0.00003 tonnes Beryl A Platform Sheen Observed - Unknown SourceUKCS/1632 22/11/2015 59-16N : 01-30E Chemical Erifon 818 v2 22.5 kg Harding Platform Conductor Tensioner - Seal FailureUKCS/1633 22/11/2015 60-18N : 04-16W Chemical MacDarmid HW540 & methanol 410 kg Foinaven - FPSO Petrojarl Subsea Chemical Systems - SCM Failure UKCS/1634 23/11/2015 58-13N : 01-06E Chemical Pelagic 100 781 kg Balmoral Template Subsea hydraulic system UKCS/1635 23/11/2015 59-36N : 01-30E Oil Oily water 0.005 tonnes Beryl B Platform Drains System - Overflow of Vessel UKCS/1636 24/11/2015 59-16N : 01-30E Chemical Erifon 818 v2 2.5 kg Harding Platform Conductor Tensioner - Seal Failure UKCS/1637 25/11/2015 54-02N : 00-43E Oil Diesel 0.0001 tonnes Cleeton CPQ Platform Diesel Systems - Failure of Equipment UKCS/1638 26/11/2015 57-43N : 00-58E Oil Lubrication 0.306 tonnes Forties FA Platform Lube oil cooler plate pack failure UKCS/1639 27/11/2015 57-22N : 01-22E Chemical Pelagic 100 225 kg Arbroath Platform Failure of Subsea Umbilical UKCS/1640 28/11/2015 59-21N : 01-33E Oil Diesel 0.05 tonnes Gryphon A Production Vessel Spill - During Manual OperationsUKCS/1641 30/11/2015 53-40N : 03-32W Chemical Oceanic HW540 E 5 kg Douglas FPSO OSB Hydraulics - Open System - Accumulator Failure UKCS/1642 30/11/2015 57-22N : 01-59E Oil Hydraulic 0.004375 tonnes Mungo Production Manifold Hydraulic Manifold/Control Panel - Small Bore Fittings

UKCS/1643 01/12/2015 60-25N : 04-03W Chemical (z) Erifon HD603HP (no dye) 1,392 kg Deepsea Aberdeen Hydraulics - Closed system - Fittings / Connections

UKCS/1644 01/12/2015 59-16N : 01-30E Oil Hydraulic 0.02 tonnes Harding Platform Transfer Hose (Not Bunkering) - Sheared UKCS/1645 01/12/2015 60-57N : 00-56E Oil Diesel 0.027 tonnes Heather A Platform Diesel Bunkering Hose - Total RuptureUKCS/1646 03/12/2015 58-17N : 00-12E Oil Oily water 0.001 tonnes Scott JD Platform Drains System - Overflow of Deck Drains UKCS/1647 03/12/2015 54-02N : 00-43E Chemical Methanol 10 kg Cleeton CPQ Platform Chemical Bunkering Hose - Pinhole LeakUKCS/1648 04/12/2015 60-37N : 01-39E Oil Crude 0.003 tonnes Dunbar Platform Entrained Oil - Utility System UKCS/1649 04/12/2015 57-11N : 00-59E Oil Hydraulic 0.006424 tonnes Gannet D Subsea Completion Subsea Chemical Systems - SCM Failure UKCS/1650 05/12/2015 57-43N : 00-58E Oil Lubrication 0.351 tonnes Forties FA Platform Entrained Oil - Utility System UKCS/1651 06/12/2015 56-57N : 01-48E Chemical Fluorodye UC 0.5 kg Rowan Gorilla V Pit Valves - Opened UKCS/1652 07/12/2015 54-36N : 02-11E Oil Diesel 0.0068283 tonnes Ensco 80 Diesel Bunkering Hose - Hose Parted from Coupling

UKCS/1553 09/12/2015 57-19N : 01-04E Oil Hydraulic 0.0004 tonnes Gannet D Subsea Completion Subsea Chemical Systems - SCM Failure UKCS/1654 09/12/2015 58-02N : 01-08E Chemical Transaqua HT2 1,176 kg Britannia Platform Hydraulics - Open System - Umbilical RuptureUKCS/1655 09/12/2015 00-12N : 58-17E Chemical (aa) EC6202A 0.0073 kg Scott JD Platform Fixed Chemical Pipework - Release From Joint UKCS/1656 11/12/2015 60-48N : 01-44E Oil Lubrication 0.16 tonnes Alwyn North NAB Platform Turbines, Pumps etc. - Seal Failure UKCS/1657 18/12/2015 58-06N : 00-41E Oil Hydraulic 0.001 tonnes Blackford Dolphin Hose (Topsides, Not Bunkering) - Sheared

UKCS/1658 18/12/2015 59-32N : 01-39E Chemical Stack-Magic ECO-F V2 & MEG 0.42 kg Sedco 704 Choke Valve Failure UKCS/1659 18/12/2015 61-05N : 01-43E Chemical Oceanic HW443ND 2 kg Brent C Platform Drains - Water Based ChemicalsUKCS/1660 19/12/2015 61-05N : 01-43E Oil Diesel 0.000000001 tonnes Brent C Platform Sheen Observed - Unknown Source UKCS/1661 19/12/2015 61-29N : 01-27E Chemical Castrol Transaqua HT2 30 kg Don SW&W Don Northern Producer Hydraulics - Open System - Fittings / Connections

UKCS/1662 19/12/2015 58-17N : 00-12E Chemical (bb) EC6202A 0.099 kg Scott JD Platform Entrained Chemicals - Water Injection - LeakUKCS/1663 20/12/2015 54-03N : 01-02E Oil Base oil completion fluid 0.01 tonnes Ravenspurn North ST2 Platform Pipework - Release From JointUKCS/1664 20/12/2015 58-03N : 01-04E Oil Diesel 0.00225 tonnes Alba Northern Platform Diesel Systems - Pinhole Leak UKCS/1665 26/12/2015 56-29N : 02-09E Oil Waste 0.0021 tonnes Fulmar A Platform Cuttings caisson, release route from caisson unknown

UKCS/1666 26/12/2015 61-21N : 01-34E Chemical Versaclean drilling fluid 14 kg Thistle A Platform Bunkering Hose - Hose Parted from Coupling UKCS/1667 27/12/2015 57-22N : 01-59E Oil Crude 0.00001 tonnes Mungo Production Manifold Pipework - Release From Joint UKCS/1668 29/12/2015 53-50N : 00-26W Oil Unknown 0.000013 tonnes Rough CD Platform Sheen Observed - Unknown SourceUKCS/1669 30/12/2015 57-04N : 00-53E Chemical Brayco Micronic SV3 346.18 kg PICT field DC7 manifold Hydraulics - Closed system - Fittings / Connections

* This incident is subject to further DECC investigation and, therefore, the omitted information should be provided in the next annual report.

(a) This incident also included the chemicals barite, DRILTREAT, DF1 Base Oil, calcium carbonate, DURATONE E, Lime, Bentone-38, SOLTEX, SUSPENTONE and Invermul NT.

(b) This incident also included the chemicals Roclean P303, RoClean L211f, PermaClean PC-11, PermaTreat PC-191 and Nalco 7408.(c) This incident also included the chemicals caustic soda, soda ash, BARAZAN, DEXTRID E, barite, CFS-476, STARCIDE and OXYGON.(d) This incident also included the chemicals GLYDRIL MC, soda ash, caustic soda, DUO-VIS, POLYPAC (all grades), IDCAP D and M-I WATE (all

grades).(e) This incident also included the chemicals OXBAN HB, STARCIDE, OXYGON, MEG (all dilutions), calcium chloride brine and CORSAF CR-I.(f) This incident also included the chemicals M-I WATE (all grades) and SAFE-VIS LE.(g) This incident also included the chemical Oceanic HW525 v2. (h) This incident also included the chemical Pelagic Stack Glycol V2.(i) This incident also included the chemicals GEM GP, Flowzan® Biopolymer, Drispac® Plus Superlo ™ Polymer, DEXTRID E, barite 4, 1 D31,

baracarb (all grades), STARCIDE and caustic soda.(j) This incident also included the chemicals Foamtreat 943, OS15 and ammonium bisulphite 65%.

(k) This incident also included the chemicals DF1, TRUVIS, Versaclean VB, Versaclean FL, lime, M-I-Wate (all grades), SAFE-CARB (all grades), VEN-CHEM 222 and Ecotrol RD.

(l) This incident also included the chemical Oceanic HW540 E.(m) This incident also included the chemicals calcium chloride brine, DFE-463, CARBOGEL, ECCO-BLOK, barite, Milgard™ XPR and RHEO-CLAY.(n) This incident also included the chemicals RX-5248 and RX-9022.(o) This incident also included the chemicals RO HY B238 biocide, RO HY M779 dye, RO HY V658 oxygen scavenger, RO IM B221, RO HY M738

and RO HY M700.(p) This incident also included the chemicals RO IM B221 and RO HY M700.(q) This incident also included the chemicals calcium chloride (all grades), ECOTROL RD, Lime, M-I WATE (all grades), SAFE-CARB (all grades),

TRUVIS, VERSAGEL HT, VERSATROL M, Versaclean FL, RHEFLAT PLUS NS and ONE-MUL NS.(r) This incident also included the chemicals Foamtreat 943, OS15 and ammonium bisulphite 65%.(s) This incident also included the chemicals caustic soda, DUO-VIS, EMI-2224, POLYPAC (all grades) and M-I-Wate (all grades).(t) This incident also included the chemicals OS15 and ammonium bisulphite 65%.(u) This incident also included the chemical sodium hypochlorite solution generated in situ.(v) This incident also included the chemicals Flotek 360 and Biotek 710.(w) This incident also included the chemical sodium hypochlorite with copper ions generated in situ.(x) This incident also included the chemicals sodium bisulphite solution and sodium hypochlorite solution generated in situ.(y) This incident also included the chemicals calcium chloride, VERSAGEL HT, Rheflat Plus NS, lime, Ecotrol, OneMul NS and MI-Wate.(z) This incident also included the chemical MEG.(aa) This incident also included the chemicals Foamtreat 943, OS15, sodium hypochlorite 15% and ammonium bisulphite 65%.(bb)This incident also included the chemicals Foamtreat 943, OS15, sodium hypochlorite 15% and ammonium bisulphite 65%.

KNOWN THIRD PARTY REPORTS (source identified but not directly related to oil and gas operations)Reference Date Location Category Type Amount Source Comments

UKCS/1670 09/02/2015 53-43N : 02-52E Oil Base oil 0.008 tonnes MV Paragon B391 Release from VesselUKCS/1671 23/02/2015 57-19N : 01-04E Oil Shell Tellus 22 0.01 tonnes Susea 7 Release from VesselUKCS/1672 24/03/2015 57-27N : 01-23E Oil Hydraulic 0.001 tonnes DSV Seven Petrel Release from VesselUKCS/1673 30/03/2015 60-20N : 04-02W Oil Hydraulic 0.00009 tonnes MV Olympic Challenger Release from ROVUKCS/1674 13/04/2015 60-21N : 04-04W Oil Hydraulic 0.0035 tonnes MSV Subsea Viking Release from VesselUKCS/1675 16/04/2015 60-20N : 04-02W Oil Hydraulic 0.0015 tonnes MV Olympic Challenger Release from ROVUKCS/1676 16/04/2015 60-20N : 04-02W Oil Hydraulic 0.0026 tonnes MV Olympic Challenger Release from ROVUKCS/1677 17/04/2015 60-21N : 04-04W Oil Hydraulic 0.000218 tonnes MSV Fugro Symphony Release from ROVUKCS/1678 21/04/2015 60-21N : 04-03W Oil Hydraulic 0.0012 tonnes MV Olympic Challenger Release from ROVUKCS/1679 22/04/2015 60-21N : 04-03W Oil Hydraulic 0.0001 tonnes MV Olympic Challenger Release from ROVUKCS/1680 24/04/2015 60-21N : 04-03W Oil Hydraulic 0.000003 tonnes FPSO Deep Blue Release from ROVUKCS/1681 08/05/2015 60-21N : 04-03W Oil Hydraulic 0.0002 tonnes FPSO Deep Blue Release from ROVUKCS/1682 10/05/2015 60-21N : 04-03W Oil Hydraulic 0.0045 tonnes MV Siem Daya 2 Release from ROVUKCS/1683 10/05/2015 60-22N : 04-05W Oil Hydraulic 0.0002 tonnes MV Siem Daya 2 Release from ROVUKCS/1684 11/05/2015 60-20N : 04-02W Oil Hydraulic 0.006 tonnes MV Siem Daya 2 Release from ROVUKCS/1685 20/05/2015 60-21N : 04-04W Oil Hydraulic 0.0005 tonnes Skandi Carla Release from ROVUKCS/1686 30/05/2015 56-27N : 02-17E Oil Hydraulic (Tellus 32) 1.5 kg DSV Skandi Achiever Release from VesselUKCS/1687 31/05/2015 60-20N : 04-03W Oil Hydraulic 0.005 tonnes Siem Daya 2 Release from ROVUKCS/1688 04/06/2015 60-21N : 04-03W Oil Hydraulic 0.004846 tonnes MV Olympic Challenger Release from ROVUKCS/1689 05/06/2015 60-03N : 03-58W Oil Hydraulic 0.0022 tonnes Platform Ocean Valiant Release from VesselUKCS/1690 08/06/2015 60-21N : 04-04W Oil Hydraulic 0.0015 tonnes MV Siem Daya 2 Release from ROVUKCS/1691 12/06/2015 60-21N : 04-04W Oil Hydraulic 0.0026 tonnes MV Olympic Challenger Release from ROVUKCS/1692 21/06/2015 60-21N : 04-04W Oil Hydraulic 0.0015 tonnes MV Siem Daya 2 Release from ROVUKCS/1693 22/06/2015 57-39N : 01-08E Chemical Underwater polyurethane resin 1.3 kg Seven Atlantic Release from VesselUKCS/1694 25/06/2015 57-17N : 01-39E Oil Unknown 0.001 tonnes MV Bourbon Monsoon Release from Vessel

UKCS/1695 25/06/2015 60-21N : 04-04W Oil Hydraulic 0.0025 tonnes MV Olympic Challenger Release from ROVUKCS/1696 30/06/2015 59-53N : 01-12E Oil Hydraulic 0.00129 tonnes Transocean Leader Release from VesselUKCS/1697 11/07/2015 60-08N : 01-42E Oil Hydraulic 0.001 tonnes MV Edda Flora Release from VesselUKCS/1698 14/07/2015 60-22N : 04-06W Oil Mineral 0.0035 tonnes MV Olympic Challenger Release from ROVUKCS/1699 18/07/2015 60-21N : 04-04W Oil Hydraulic 0.0007 tonnes MV Viking Neptun Release from ROVUKCS/1700 20/07/2015 56-44N : 01-17E Oil Hydraulic 0.0002 tonnes Skandi Iceman Release from VesselUKCS/1701 28/07/2015 60-21N : 04-04W Oil Hydraulic 0.00062 tonnes MV Olympic Challenger Release from ROVUKCS/1702 29/07/2015 60-21N : 04-04W Oil Hydraulic 0.00175 tonnes MSV Fugro Symphony Release from VesselUKCS/1703 08/08/2015 60-21N : 04-03W Oil Hydraulic 0.00023 tonnes MV Olympic Challenger Release from ROVUKCS/1704 10/08/2015 58-43N : 01-24E Oil Unknown 0.000001 tonnes MSV Caledonian Victory Release from VesselUKCS/1705 16/08/2015 56-50N : 02-10E Oil Hydraulic (Tellus 32) 0.000017 tonnes MV Skandi Constructor Release from VesselUKCS/1706 18/08/2015 60-21N : 04-04W Oil Hydraulic 0.0088 tonnes MV Olympic Challenger Release from ROVUKCS/1707 21/08/2015 60-20N : 04-02W Oil Hydraulic 0.00053 tonnes MV Olympic Challenger Release from ROVUKCS/1708 29/08/2015 57-45N : 01-48E Oil Hydraulic 0.005172 tonnes Edda Fauna Release from VesselUKCS/1709 30/08/2015 57-45N : 01-48E Oil Hydraulic 0.1724 tonnes Edda Fauna Release from VesselUKCS/1710 05/09/2015 60-21N : 04-03W Oil Hydraulic 0.0037 tonnes MV Siem Daya 2 Release from ROVUKCS/1711 06/09/2015 60-21N : 04-04W Oil Hydraulic 0.006 tonnes MV Olympic Challenger Release from ROVUKCS/1712 06/09/2015 60-44N : 02-29W Oil Lubrication 0.008 tonnes MSV Caledonian Vigilance Release from VesselUKCS/1713 07/09/2015 60-18N : 04-16W Oil Hydraulic 0.004 tonnes MV Island Constructor Release from VesselUKCS/1714 08/09/2015 60-21N : 04-04W Oil Hydraulic 0.0035 tonnes MV Olympic Challenger Release from ROVUKCS/1715 08/09/2015 61-16N : 01-35E Oil Diesel 0.0004 tonnes MSV Eidesvik AS Viking Dynamic Release from VesselUKCS/1716 10/09/2015 59-44N : 01-40E Oil Hydraulic 0.000001 tonnes Supporter 8 Rov Release from VesselUKCS/1717 14/09/2015 60-37N : 01-39E Oil Hydraulic 0.01475 tonnes CSV Olympic Ares Release from VesselUKCS/1718 14/09/2015 59-55N : 01-17E Oil Hydraulic 0.00005 tonnes MV Viking Neptun Release from VesselUKCS/1719 14/09/2015 60-37N : 01-39E Oil Hydraulic 0.0073 tonnes CSV Olympic Ares Release from VesselUKCS/1720 22/09/2015 56-52N : 02-02E Oil Hydraulic 0.015 tonnes MSV Vos Islay Release from VesselUKCS/1721 23/09/2015 59-53N : 01-12E Oil Hydraulic 0.0025 tonnes DSV Skandi Arctic Release from Vessel

UKCS/1722 24/09/2015 60-20N : 04-02W Oil Hydraulic 0.00525 tonnes MV Fugro Symphony Release from ROVUKCS/1723 24/09/2015 60-21N : 04-04W Oil Hydraulic 0.00132 tonnes MV Olympic Challenger Release from ROVUKCS/1724 24/09/2015 60-21N : 04-03W Oil Hydraulic 0.00088 tonnes MV Siem Daya 2 Release from ROVUKCS/1725 25/09/2015 60-21N : 04-04W Oil Hydraulic 0.00053 tonnes MV Olympic Challenger Release from ROVUKCS/1726 04/10/2015 60-20N : 04-02W Oil Hydraulic 0.00088 tonnes MV Olympic Challenger Release from ROVUKCS/1727 18/10/2015 60-44N : 02-29W Oil Lubrication 0.0008 tonnes MSV Caledonian Vigilance Release from VesselUKCS/1728 06/11/2015 58-02N : 01-24E Oil Unknown 0.000001 tonnes MSV Caledonian Victory Release from VesselUKCS/1729 06/11/2015 61-39N : 01-21E Oil Hydraulic 0.00000002 tonnes MV Skandi Constructor Release from VesselUKCS/1730 15/11/2015 29-28N : 01-23E Oil Hydraulic 0.005 tonnes MSV Rem Ocean Release from VesselUKCS/1731 13/12/2015 57-09N : 02-17E Oil Hydraulic 0.004 tonnes DSV Normand Subsea Release from ROV

**ONGOING RELEASES 2015 Reference Date Location Category Type Amount Source Comments

05/01/2008 53-05N : 02-07W Oil Condensate 0.063 tonnes Leman AD1 Platform [SHELL] Release from AP vent system 19/05/2010 53-49N : 00-28E Oil Hydraulic 0.180 tonnes Rough AP Platform Downhole equipment failureUKCS/1414 24/06/2011 60-37N : 01-39E Chemical Oceanic HW 443 0.554 kg Nuggest N1 Completion Subsea hydraulic control systemUKCS/1669 08/12/2011 61-29N: 01-27E Chemical Gyptron SA3460 3,565.88 kg Don SW&W Don NP Leak from subsea distribution unitUKCS/1285 14/03/2013 61-29N : 01-27E Chemical Castrol Transaqua 4,130.17 kg Don SW&W Don NP Leaking fitting on wing valve

UKCS/1349 28/04/2013 60-37N : 01-39E Chemical Oceanic HW443 R 2.462 kg Jura WHPS 2 Leak operating Xmas tree valveUKCS/1350 03/05/2014 60-51N : 01-28E Chemical Oceanic HW540 v2 15,022.16 kg Ninian Central Platform Failure of SSIV hydraulic systemUKCS/1374 14/05/2014 58-17N : 00-12E Chemical (cc) EC6202A 1.331 kg Scott JU Platform Leak from water injection systemUKCS/1488 09/07/2014 57-15N : 00-48E Chemical Castrol Brayco micronic sv/3 99.9 kg Guillemot, Teal FPSO Anasuria Release from injection wing valve.UKCS/1509 25/07/2014 57-04N : 00-53E Chemical Corrosion Inhibitor CK 929G 663 kg Guillemot West (Triton) FPSO Release from subsea corrosion inhibitor umbilical

UKCS/1517 29/07/2014 57-08N : 01-59E Chemical Methanol (all grades) 10.35 kg Scoter Subsea Completion Failure of subsea umbilicalUKCS/1641 15/10/2014 57-19N : 01-04E Oil Hydraulic 0.39428 tonnes Gannet D Subsea Completion Release following subsea valve repairsUKCS/1687 11/11/2014 58-13N : 01-06E Chemical Pelagic 100 28,898 kg Balmoral FPV Crack in HP filter manifold on ROVUKCS/1609 27/11/2014 58-03N : 01-04E Chemical Oceanic HW540 E 435 kg Alba Northern Platform Failure of SSIV hydraulic systemUKCS/1635 22/12/2014 58-27N : 00-15E Chemical (dd) OSW85797 122.49 kg Piper B Platform Subsea release from water injection system

UKCS/1637 23/12/2014 58-41N : 01-16E Chemical HW443 5,424 kg Brae Central Template Hydraulics - Open System - SCM failure

** The rollover ongoing incidents listed commenced and were initially recorded during a previous reporting year. As a result they have not been recorded as a new incident analyses to provide a true reflection of fluids released to sea during the calendar year. However, the quantity released during the current calendar period has been taken into account within the overall statistical analyses to provide a true reflection of fluids released to sea during the calendar year.

(cc) This incident also included the chemicals ammonium bisulphite 65%, Foamtreat 943; OS15 and sodium hypochlorite 14-16%.(dd) This incident also included the chemicals sodium bisulphite solution, sodium hypochlorite solution generated in situ and RX-9022C.

*** UPDATES TO 2011, 2012, 2013 and 2014 UKCS OIL AND GAS INSTALLATION RELEASES (not included in annual statistics).

Reference Date Location Category Type Amount Source CommentsUKCS/1676 13/12/2011 57-00N: 01-17E Chemical Pelagic 100 & RX-2055 258.72 kg Banff FPSO Petrojarl Subsea riser, further to loss of station incidentUKCS/1677 13/12/2011 57-00N: 01-17E Chemical Methanol & HW540E 240.24 kg Banff FPSO Petrojarl Subsea riser, further to loss of station incidentUKCS/1678 13/12/2011 57-00N: 01-17E Chemical RX-5105 & RX-7014 123.71 kg Banff FPSO Petrojarl Subsea riser, further to loss of station incidentUKCS/1686 18/12/2011 57-00N: 01-17E Oil Crude 0.01 tonnes Banff FPSO Petrojarl Subsea riser, further to loss of station incidentUKCS/1687 18/12/2011 57-00N: 01-17E Oil Crude 1.56 tonnes Banff FPSO Petrojarl Subsea riser, further to loss of station incident

UKCS/1838 25/03/2012 57-00N : 01-50E Oil Condensate 405.308 tonnes Elgin WHP A Well control incident (ee)

UKCS/1839 25/03/2012 57-00N : 01-50E Chemical Enviromul Mud 364,351 kg Elgin WHP A Well control incident (ee)

UKCS/1839 26/05/2012 57-00N : 01-50E Chemical Enviromul Mud 1,961 kg Elgin WHP A Well control incident (ee)

UKCS/1485 29/05/2012 57-00N : 01-50E Oil Condensate 0.02976 tonnes Elgin WHP A Well control incident (ee)

UKCS/1524 02/07/2012 60-44N : 02-29W Chemical LiteCRETE blend 23,000 kg Paul B Lloyd Jnr Vent Line - Over Filled

UKCS/1536 10/07/2012 61-19N : 01-32E Oil Crude 15.116658 tonnes Osprey Production Manifold Subsea Pipelines - Pipework FailureUKCS/1752 04/12/2012 58-02N : 01-08E Chemical TEG & EC1389B 164 kg Britannia Cooling medium system heat exchanger failure

UKCS/1764 15/12/2012 56-43N : 01-18E Chemical ****TEG, Nalco E6157A 19,742 kg Curlew FPSO Extreme weather event caused loss of deck inventoryUKCS/1283 11/03/2013 58-02N: 01-08E Chemical TEG 649.15 kg Britannia BLP Cooling medium transfer resulted in release to sea via seawater outfall caisson

UKCS/1564 02/09/2013 58-02N: 01-08E Chemical TEG (all grades) 120 kg Britannia BLP Cooling medium transfer resulted in release to sea via seawater outfall caisson

UKCS/1566 05/09/2013 58-02N: 01-08E Chemical MEG 4,334 kg Britannia BLP Failure of injection pump and flange assemblyUKCS/1639 27/10/2013 58-02N: 01-08E Chemical TEG 1,327 kg Britannia Loss of chemical through drains systemUKCS/1709 18/12/2013 58-02N: 01-08E Chemical TEG & EC1389B 703.3 kg Britannia Primary Heating Medium released to sea due to online bursting disc rupture

UKCS/1632 19/12/2014 57-23N : 02-51E Chemical Cement Class G Oilwell (Portland) **** Byford Dolphin ****

*** The incidents included within this table refers to incidents which occurred during a previous calendar year, but which were not included in ACOPS reports at that time as they were subject to investigation proceedings by DECC (now BEIS). The investigations have now concluded and the information is recorded in this table to provide a true reflection of incidents which occurred during the calendar years noted. Where there is a symbol **** the investigation is still underway and as a result details cannot be included in this report. This will be updated once the investigation has concluded.

(ee) Prosecuted by HSE for Contravention of the Offshore Installations and Wells (Design and Construction etc) Regulations 1996, Regulation 13 (1) (a) and (b) and Health and Safety at Work etc Act 1974, Section 33 (1) c.

12: UKCS VESSEL DISCHARGESReference Date Location Category Type Amount Source CommentsUKCS/800 26/03/2015 56-29N : 02-09E Oil Nk 0.18 tonnes Unidentified vessel Reported by Fulmar InstallationUKCS/801 29/03/2015 58-02N : 01-24E Oil Nk 0.00005 tonne Unidentified vessel Reported by Andrew InstallationUKCS/802 04/04/2015 59-21N : 01-33E Oil Nk 0.685 tonnes Unidentified vessel Reported by Gryphon InstallationUKCS/803 22/04/2015 57-22N : 01-59E Oil Nk 0.01 tonnes Unidentified vessel Reported by Mungo InstallationUKCS/804 02/05/2015 61-37N : 01-18E Oil Nk 0.0012 tonnes Unidentified vessel Reported by Magnus InstallationUKCS/805 06/05/2015 56-27N : 02-17E Oil Crude 0.09113 tonnes Unidentified vessel Reported by Clyde InstallationUKCS/806 06/05/2015 57-48N : 00-58E Oil Nk 0.00756 tonnes Unidentified vessel Reported by Buzzard InstallationUKCS/824 10/05/2015 60-57N: 00-57E Oil Hydraulic 100 litres MSV Seven Discovery Damaged thruster, oil dispersed naturallyUKCS/807 11/05/2015 57-27N : 01-23E Oil Crude 0.008975 tonnes Unidentified vessel Reported by Montrose InstallationUKCS/808 20/05/2015 58-02N : 01-02E Oil Nk 0.17655 tonnes Unidentified vessel Reported by Alba InstallationUKCS/809 04/06/2015 57-48N : 00-58E Oil Sludge 0.00252 tonnes Unidentified vessel Reported by Buzzard InstallationUKCS/810 25/06/2015 57-00N : 01-19E Oil Nk 0.0009 tonnes Unidentified vessel Reported by Prospector 5 InstallationUKCS/811 25/06/2015 60-48N : 01-44E Oil Nk 0.02 tonnes Unidentified vessel Reported by Alwyn North InstallationUKCS/812 29/06/2015 56-57N : 01-26E Oil Nk 0.012 tonnes Unidentified vessel Reported by Shearwater InstallationUKCS/813 13/07/2015 56-58N : 01-28E Oil Nk 0.00082 tonnes Unidentified vessel Reported by Corfe InstallationUKCS/815 25/07/2015 58-02N : 01-02E Oil Nk 0.25 tonnes Unidentified vessel Reported by Alba InstallationUKCS/817 07/08/2015 61-14N : 01-08E Oil Crude 0.31 tonnes Unidentified vessel Reported by N. Cormorant InstallationUKCS/818 01/09/2015 58-13N : 01-06E Oil Nk 1.54 tonnes Unidentified vessel Reported by Balmoral InstallationUKCS/819 05/09/2015 58-03N : 01-04E Oil Nk 0.125 tonnes Unidentified vessel Reported by Alba InstallationUKCS/820 10/09/2015 58-13N : 01-06E Oil Crude 0.404543 tonnes Unidentified vessel Reported by Balmoral InstallationUKCS/821 24/09/2015 60-37N : 01-39E Oil Nk 0.071 tonnes Unidentified vessel Reported by Dunbar InstallationUKCS/823 11/11/2015 57-00N : 01-50E Oil Nk 0.0001 tonnes Unidentified vessel Reported by Elgin Installation

APPENDIX 2

SURVEY QUESTIONNAIRE AND ACCOMPANYING GUIDELINES

MCA/ACOPS ANNUAL SURVEY OF VESSEL/OFFSHORE SOURCED MARINE POLLUTION

GUIDELINES TO AID COMPLETION OF THE SURVEY FORM

The survey questionnaire requests information on incidents involving a range of pollutants including mineral oil (MARPOL I), noxious liquid substances (MARPOL II), packaged dangerous/harmful goods (MARPOL III) and garbage (MARPOL V).

Reports are requested for pollution incidents attributed to discharges, or suspected discharges, from vessels and offshore installations operating within the United Kingdom’s Exclusive Economic Zone (UK EEZ), harbour waters and national waters. Information is not required for pollution incidents attributed to land-based sources such as industrial premises, sewers and outfalls.

Annual returns can be made either by email or by post. If using email please click on the boxes provided and insert other information in the spaces provided. The email and postal versions of the survey form can be downloaded from the ACOPS website at www.acops.org.uk (under ACOPS Reports on the main menu) together with previous survey reports.

Please complete a separate form for each incident. Thank you for your continued support in providing this important information.

Question Guideline1 Please insert name of reporting organisation. If you have nothing to report

please tick the no pollution to report box, add respondent details (Question 17) and return the questionnaire to the address shown.

2 Identify the category of vessel/offshore sourced pollution from the options given (tick appropriate box). Note that in the case of garbage, an incident report is requested only in circumstances involving an illegal or accidental discharge from a specific vessel/offshore installation. An incident report is not required following observations of litter at sea or on beaches from an unknown source.

3 Insert dates of the beginning and end of the incident.

4 Please identify one or more zones affected by the pollution (tick appropriate box). The shoreward boundary of the open sea zone is defined as 3 nautical miles (5.6 km) from nearest land.

5 State how long the pollution remained in days or weeks (insert values).

6 Identify the location of the incident using geo-coordinates, national grid reference, place name or other suitable method (insert details).

7 If known, insert the estimated volume of pollution in litres, tonnes or cubic metres. Please state any other units of volume used.

8 Please indicate the overall distance in km, or state the names of settlements at the extremities, of the affected stretch of coastline.

9 Indicate whether a vessel or offshore installation was identified as a source of pollution or simply suspected on the basis of available evidence (tick most appropriate box from the options given). Note that incidents attributed to land-based sources of pollution are not included in this survey.

10 Please identify the most appropriate category which indicates the scale of pollution at sea or deposited on the shoreline (tick appropriate boxes).

11 If known, identify the type of vessel or offshore installation causing the pollution (tick one of the boxes to select the appropriate response to the options given).

12 Please state the name of the vessel/offshore installation, whether UK or foreign registered and operating company if known (insert details in the spaces provided).

13 Identify the category and type of pollution from the options given (tick the appropriate box or insert relevant details in the spaces provided).

14 Indicate whether a partial or complete clean-up operation was undertaken (Circle appropriate option).

15 Please add details of any legal proceedings initiated against alleged offenders including fines and penalties (identify options as indicated and insert other information). Any further information not available at the time of reporting will be requested in a separate questionnaire.

16 Add any further relevant details as indicated (by inserting information in the space provided or on a separate sheet). Please include any comments on how the questionnaire might be improved.

17 Please provide the background details requested including your email address which can be used in future surveys.

Trevor Dixon,Advisory Committee on Protection of the Sea,c/o MCSC, Trinity College (Julian Hunt)Cambridge CB2 1TQTel: (01494) 521923 email: [email protected]

acops · web viewbg plc reported an incident resulting in the release of 5,509 kg of transaqua ht2n...

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