ccc inspection pipeline report

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Pipeline Inspection Report

ROV Pipeline Inspection Survey Field Name Field

Offshore xxxxxxxxx

For

END CLIENT

PIPE NAME

Inspection Date: Month YYYY

Document No.: XXX-RP-OP-XXX

ROV Pipeline Inspection - YYYY Page: I XXX-RP-OP-XXX

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Contractor

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PROJECT LOCATION FIELD LAYOUT

ROV Pipeline Inspection - YYYY Page: II XXX-RP-OP-XXX

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Figure 1: Pipeline Name Pipeline As-Found – Plan View

ROV Pipeline Inspection - YYYY Page: 1 XXX-RP-OP-XXX

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Document Prepared by MCS Free Zone (MCS)

Prepared by XXXXXX

Company MCS Free Zone

Address Building 39R, 6th Block

Zahraa El Maadi,

Cairo,

Egypt

Tel +20 2 52218563

Fax +20 2 25218570

Web Address www.mcsoil.com

Document Issued by Contractor Company Name

Issued by XXXXXXX

Company

Address

Tel

Fax

Email

Web Address

Document Issued to End Client Name

Issued to XXXXXXXXX

Company

Address End Client Address

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Contractor

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http://www.mcsoil.com/


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Quality Control

MCS Report No.

XXXX-XXXX-RP-XX-XX-XXX

Revision No. Description Issue Date

Prepared By

Reviewed By

Approved By

R0 Draft – Issued to client for approval

dd/mm/yy XXXXXX XXXXXX XXXXXX

Service Warranty

The data presented within the report and associated charts/drawings have been acquired and processed to meet the requirements of the contract as agreed by End Client and Contractor. Any unauthorized use of the information presented within this report and charts/drawings is prohibited. Contractor will not accept any liability if the data is used for purposes other than those agreed in the contract.

Subsea cables and thin pipelines can be very difficult to detect due to their small diameter. Unless their existence and approximate location is made known prior to the commencement of the survey work, there is a possibility that they may not be represented in these documents and the user should take the necessary precautions.

The information presented in this report and associated charts/drawings are based on the interpretation of the external visual inspection and will not provide accurate details of any features which are not entirely and/or clearly visible.


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Table of Contents

Page

1. INTRODUCTION ........................................................................................................................................................................ 6

1.1. Definition ....................................................................................................................................................................................... 6

1.2. Project Scope of Work ................................................................................................................................................................ 6

1.2.1. Pipeline Survey ....................................................................................................................................................................... 6

1.2.2. Platform Inspection ................................................................................................................................................................. 6

1.2.3. Optional Work ......................................................................................................................................................................... 6

1.3. Client Provided Information ........................................................................................................................................................ 8

2. INSPECTION SUMMARY ........................................................................................................................................................ 9

2.1. ROV Inspection Notes .............................................................................................................................................................. 10

3. INSPECTION RESULTS ........................................................................................................................................................ 11

3.1. Anomaly Summary ................................................................................................................................................................... 11

3.2. Anodes ....................................................................................................................................................................................... 12

3.3. Pipe Exposures ......................................................................................................................................................................... 12

3.4. Pipe Damages ........................................................................................................................................................................... 13

3.5. Debris ......................................................................................................................................................................................... 13

3.6. Engineering Features ............................................................................................................................................................... 14

3.7. Seabed Features ...................................................................................................................................................................... 14

3.8. Field Joints ................................................................................................................................................................................. 15

3.9. Free spans ................................................................................................................................................................................. 15

3.10. Supports ..................................................................................................................................................................................... 16

3.11. Stabilizations .............................................................................................................................................................................. 16

3.12. Crossings ................................................................................................................................................................................... 17

3.13. Video Images ............................................................................................................................................................................. 18

APPENDICES

APPENDIX A – SURVEY PARAMETERS I

APPENDIX B – EVENT CODE DEFINITIONS IV

APPENDIX D – COMPLETE EVENT LISTING VII

APPENDIX E – PIPELINE COORDINATE LISTING IX

APPENDIX G – INSPECTION ALIGNMENT CHARTS XI


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List of Tables

Table 1: Pipeline Name Pipeline – Pipeline Characteristics 8

Table 2: Pipeline Name Pipeline – Inspection Summary 9

Table 3: Pipeline Name Pipeline – Anomalies Listing 11

Table 4: Pipeline Name Pipeline – Anodes Listing 12

Table 5: Pipeline Name Pipeline – Exposures Listing 12

Table 6: Pipeline Name Pipeline – Damages Listing 13

Table 7: Pipeline Name Pipeline – Debris Listing 13

Table 8: Pipeline Name Pipeline – Engineering Features Listing 14

Table 9: Pipeline Name Pipeline – Seabed Features Listing 14

Table 10: Pipeline Name Pipeline – Field Joints Listing 15

Table 11: Pipeline Name Pipeline – Free spans Listing 15

Table 12: Pipeline Name Pipeline – Supports Listing 16

Table 13: Pipeline Name Pipeline – Stabilizations Listing 16

Table 14: Pipeline Name Pipeline – Crossings Listing 17

Table 15: GPS Satellite System Geodetic Parameters II

Table 16: Project Geodetic Parameters II

Table 17: Survey Units III

Table 18: Event Dimension Definitions III

Table 19: Anode Depletion Grades III

Table 20: Event Code Definitions VI

Table 21: Pipeline Name Pipeline – Complete Event Listing VIII

Table 22: Pipeline Name Pipeline – Pipeline Coordinate Listing X

Table 23: Pipeline Name Pipeline – Associated Charts XII

List of Figures

Figure 1: Pipeline Name Pipeline As-Found – Plan View ii


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GLOSSARY OF ABBREVIATIONS

BOSIET Basic Offshore Safety Induction and Emergency Training

DPR Daily Project Report

CD Chart Datum

CM Central Meridian

CP Cathodic Protection

CRP Common Reference Point

CTDS Conductivity, Temperature, Depth and Salinity (to compute VOS)

DGPS Differential Global Positioning System

DP Dynamic Positioning

GMT Greenwich Mean Time

GPS Global Positioning System

GVI General Visual Inspection

HSE Health, Safety & Environment

INS Inertial Navigation System

KP Kilometer Post

LAT Lowest Astronomical Tide

LIM Line Insulation Monitor

MCS MCS Free Zone

MPI Magnetic Particle Inspection

M/s Meter per Second

MV Marine Vessel

mV Millivolts

NDT Non-Destructive Testing

QC Quality Control

ROV Remotely Operated Vehicle

SOW Scope of Work

TBA To Be Announced

TBC To Be Confirmed

UAE United Arab Emirates

USBL Ultra Short Base-Line (Underwater Acoustic Positioning System)

UTC Coordinated Universal Time

UTM Universal Transverse Mercator

VOS Velocity of Sound in Seawater


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1. INTRODUCTION

Contractor Company Name was contracted by End Client to provide ROV survey services for the

inspection of existing subsea pipelines in the Field Name field, offshore United Arab Emirates.

This document provides the detailed results of the ROV survey undertaken along the pipelines.

Inspection operations were undertaken from the Vessel Name.

All survey related works were carried out in accordance with End Client Name’s requirements/

Contractor’s and standing work practices.

1.1. Definition

PROJECT ROV Inspection of Subsea Pipelines/Cable/Structure

COMPANY End Client

CONTRACTOR Contractor Company Name

SURVEY SUB-CONTRACTOR Contractor Company Name

ROV SUB-CONTRACTOR Contractor Company Name

LOGGING, PROCESSING, AND MCS Free Zone

REPORTING SUB-CONTRACTOR

CP SUB-CONTRACTOR XXXXX

1.2. Project Scope of Work

The scope of work to be carried out by contractor under this contract was to undertake ROV pipeline

inspection offshore the xxxxxxxxxxx. The scope of required services can be summarized as follows:

1.2.1. Pipeline Survey

The scope of work to be carried out by contractor under this section of the contract was to conduct

inspection surveys of existing pipeline infrastructure in the Field Name field, offshore xxxxxxxxxx. The

scope of required services can be summarized as follows

ROV inspection survey of No of surveyed pipes subsea pipelines (approximately Total Length

of pipes/cables Km).

The purpose of the pipeline survey was the visual assessment of the basic properties (presence /

absence, overall integrity, obvious damage, surface condition, etc.) of the pipeline and associated

attachments.

1.2.2. Platform Inspection

The scope of work to be carried out by contractor under this section of the contract is to conduct

external inspection surveys of designated platforms in Field Name, as part of the End Client Name

routine platform inspection project.

The scope of required services can be summarized as follows:

General Visual Inspection (GVI):

Cathodic Protection and Anode Survey:

Riser Survey:

Riser Clamp Survey:

1.2.3. Optional Work


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The client had informed contractor that upon completion of the pipeline survey/platform inspection

addition survey operations may be required to be undertaken by the ROV, these being:

Seabed survey.

Spud can survey.

The client confirmed all optional work prior to the completion of pipeline survey/platform inspection

operations


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1.3. Client Provided Information

The below table presents characteristics of the pipeline were provided by the client.

Pipeline Name Pipeline – Pipeline Characteristics

Date Laid YYYY

Outside Steel Pipe

Diameter (mm) X.XX

Wall Thickness

(mm) XX.X

Material XXXXXX

First Layer: Anti-

Corrosion Coating

(mm)

XXXXXX

Concrete Coating

Thickness (mm) XX.X

Table 1: Pipeline Name Pipeline – Pipeline Characteristics


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2. INSPECTION SUMMARY

Pipeline Name Pipeline – Inspection Summary

Criteria Description

Pipeline Pipeline Name

Field Field Name Field

Inspection Date dd/mm/yyyy

Pipeline Start Location Start Location “E,N”

Pipeline End Location End Location “E,N”

Pipeline Start KP xx.xxx

Pipeline End KP xx.xxx

Water Depth xx.xxx m

General Condition The pipeline in serviceable condition with no areas of pipe damage

and no areas of weight coat loss.

Anomalies

XXX Anomalies were found during the survey, consisting of:

XX Anodes

XX Free spans

…. Etc.

Anodes XX Anodes were observed during survey.

None OR XX found to be anomalous.

Exposures XX Exposures were observed during survey.


Damages XX Damages were observed during survey.


Debris XX Debris was observed during survey.


Engineering Features XX Engineering features were observed during survey.


Seabed Features XX Seabed features were observed during survey.


Field Joints XX Field joints were observed during survey.


Free spans XX Free spans were observed during survey.


Supports XX Supports were observed during survey.


Stabilizations XX Stabilizations were observed during survey.


Crossings XX Crossings were observed during survey.


Table 2: Pipeline Name Pipeline – Inspection Summary

Note:

This report is to be read in-conjunction with the supplied MCS digital viewer, which presents the

complete video along with processed sensor and event information recorded at the time of the survey.


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2.1. ROV Inspection Notes

All times stated within the report are GMT + Y Hrs. (xxxxx Local time).

Video data was recorded at the time of the survey. KP values displayed on the video overlays are

raw and were derived by using the client supplied databases. KP values stated in the report

document are generated from the processed track of the ROV thus; a variation may occur between

the raw KP values displayed on the video overlays and the KP values stated within this report

document.

Events visually observed both during the initial survey and post review are presented within this

report document. Events that were obscured from view of the cameras (i.e. an event covered with

sufficient marine growth to hide its appearance) were not recorded and are not presented within

this report document.

No “Fitness for Purpose” comments or conclusions are present within this report document.


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3. INSPECTION RESULTS

3.1. Anomaly Summary

Pipeline Name Pipeline – Anomalies Listing

Event

ID Date/Time

Event

Code KP

Easting

(m)

Northing

(m)

Top of Pipe

Depth (m)

Seabed

Depth (m) Description

Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E

Table 3: Pipeline Name Pipeline – Anomalies Listing


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3.2. Anodes

XX (Number in letters) anodes were observed during the survey, XX (Number in letters) were considered anomalous. The most negative value recorded was

-XXXXmV at KPX.XXX and the least negative value recorded was -XXXXmV at KPX.XXX. The potentials indicate that the pipeline is being effectively

protected throughout its entire length by its cathodic protection system. Details of the anodes are presented below:

Pipeline Name Pipeline – Anodes Listing

Event

ID Date/Time

Event

Code KP

Easting

(m)

Northing

(m)

Top of Pipe

Depth (m)

CP Reading

(-mV)

Depletion

Grades Description


Table 4: Pipeline Name Pipeline – Anodes Listing

3.3. Pipe Exposures

XX (Number in letters) areas of burial were observed during the survey, XX (Number in letters) were considered anomalous. Details of the burials are

presented below:

Pipeline Name Pipeline – Pipe Exposure Listing

Event

ID Date/Time Event Code KP Easting (m) Northing (m) Length (m)

Seabed



Table 5: Pipeline Name Pipeline – Exposures Listing


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3.4. Pipe Damages

XX (Number in letters) areas of damage observed during the survey, which considered anomalous. Details of the items of damages are presented below:

Pipeline Name Pipeline – Damages Listing

Event

ID Date/Time

Event

Code KP Easting (m) Northing (m)

Top of Pipe

Depth (m)

Seabed



Table 6: Pipeline Name Pipeline – Damages Listing

3.5. Debris

XX (Number in letters) debris observed during survey, XX (Number in letters) were considered anomalous. Details of the items of debris are presented

below:

Pipeline Name Pipeline – Debris Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 7: Pipeline Name Pipeline – Debris Listing


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3.6. Engineering Features

XX (Number in letters) engineering features observed during the survey, XX (Number in letters) were considered anomalous. Details of the features are

presented below:

Pipeline Name Pipeline – Engineering Feature Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 8: Pipeline Name Pipeline – Engineering Features Listing

3.7. Seabed Features

XX (Number in letters) seabed features observed during the survey, XX (Number in letters) were considered anomalous. Details of the features are

presented below:

Pipeline Name Pipeline – Engineering Feature Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 9: Pipeline Name Pipeline – Seabed Features Listing


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3.8. Field Joints

XX (Number in letters) field joints observed during the survey, XX (Number in letters) were considered anomalous. Details of the field joints are presented

below:

Pipeline Name Pipeline – Field Joints Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 10: Pipeline Name Pipeline – Field Joints Listing

3.9. Free spans

XX (Number in letters) areas of free span observed during the survey, XX (Number in letters) were considered anomalous; the allowable free span length

(X.XX m).The longest free span was X.XX m long at KPX.XXX. Details of the areas of free span are presented below:

Pipeline Name Pipeline – Free spans Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Length

(m)

Height

(m) Description


Table 11: Pipeline Name Pipeline – Free spans Listing

Notes:

1) Number of free spans is considered with respect to free span start. 2) Touchdowns are considered when calculating free span lengths.


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3.10. Supports

XX (Number in letters) supports observed during the survey, XX (Number in letters) were considered anomalous. Details of the supports are presented

below:

Pipeline Name Pipeline – Supports Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 12: Pipeline Name Pipeline – Supports Listing

3.11. Stabilizations

XX (Number in letters) supports observed during the survey, XX (Number in letters) were considered anomalous. Details of the supports are presented

below:

Pipeline Name Pipeline – Stabilizations Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 13: Pipeline Name Pipeline – Stabilizations Listing


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3.12. Crossings

XX (Number in letters) crossings observed during the survey, XX (Number in letters) were considered anomalous. Details of the crossings are presented below:

Pipeline Name Pipeline – Crossings Listing

Event

ID Date/Time

Event


Top of Pipe

Depth (m)

Seabed



Table 14: Pipeline Name Pipeline – Crossings Listing


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3.13. Video Images

Anomaly description Anomaly description

ID: KP: Code: ID: KP: Code:

ROV Pipeline Inspection - YYYY Page: I XXX-RP-OP-XXX

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Appendix A – Survey Parameters

ROV Pipeline Inspection - YYYY Page: II XXX-RP-OP-XXX

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GPS Satellite System Geodetic Parameters

The geodetic parameters for the WGS84 Spheroid and Datum are as follows:

GPS Satellite System Geodetic Parameters

Parameter Value

Spheroid XXXXX

Semi-Major Axis (a) XXXXX

Semi-Minor Axis (b) XXXXX

First Eccentricity Squared (e2) XXXXX

Inverse Flattening (1/f) XXXXX

Datum XXXXX

Source: XXXXX

Table 15: GPS Satellite System Geodetic Parameters

Project Geodetic Parameters

The following Spheroid, Projection and Transformation Parameters were utilized throughout the duration of the

survey and within this document.

Project Geodetic Parameters

Parameter Value

Spheroid XXXXX

Semi-Major Axis (a) XXXXX

Semi-Minor Axis (b) XXXXX

First Eccentricity Squared (e2) XXXXX

Inverse Flattening (1/f) XXXXX

Datum XXXXX

Projection XXXXX

Central Meridian (CM) XXXXX

Latitude of Origin XXXXX

False Easting XXXXX

False Northing XXXXX

Scale Factor on CM XXXXX

Transformation Parameters (ITRF 2000 – epoch 1997.0 to Nahrwan 1967)

Translation XXXXX XXXXX XXXXX

Rotation XXXXX XXXXX XXXXX

Scale Factor XXXXX XXXXX

Rotation Convention: Coordinate Frame Rotation (Right Handed Convention)

Source: XXXXX

Table 16: Project Geodetic Parameters

ROV Pipeline Inspection - YYYY Page: III XXX-RP-OP-XXX

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Survey Units

The following survey units were used throughout the project and within this document.

Survey Units

Type Unit

Time XXXXX

Linear units XXXXX

Velocity XXXXX

Angular units XXXXX

Table 17: Survey Units

Event Information

All events are described and dimensioned. All dimensions are in terms of the following:

Event Dimension Definitions

Type of Dimension Example

XXXXX XXXXX

XXXXX XXXXX

XXXXX XXXXX

XXXXX XXXXX

Table 18: Event Dimension Definitions

Anode Depletion Grades

Depletion Grades Depletion Percentage

XXXXX XXXXX

XXXXX XXXXX

XXXXX XXXXX

XXXXX XXXXX

Table 19: Anode Depletion Grades

ROV Pipeline Inspection - YYYY Page: IV XXX-RP-OP-XXX

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Appendix B – Event Code Definitions

ROV Pipeline Inspection - YYYY Page: V XXX-RP-OP-XXX

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Event Code Definitions

Event Code Description Event Code Description

AN-AB Anode Bracelet EF-FCL Clamp

AN-AD Anode Damaged EF-FG Generic

AN-AF Anode Retrofit EF-FL Flange

AN-AR Anode Remote EF-FO Other Features

AN-SA Anode Sled EF-GN Goose Neck

BU-BE Burial End EF-PB Pipe Bend

BU-BIE Intermittent Burial End EF-PF Protection Frame

BU-BIS Intermittent Burial Start EF-PL PLEM

BU-BS Burial Start EF-RE Riser Elbow

C-CC Comment EF-TI Tie-In

DA-CMC Cracking EF-VL Valve

DA-DBE Bitumen Exposed Coating EF-WCC Weight Coat Change

DA-DCC Concrete Cracked Coating FJ-FD Field Joint Damaged

DA-DCR Concrete Removed Coating FJ-OK Field Joint

DA-DCR Concrete Removed Coating FS-SC Scour

DA-DME Bare Metal Exposed FS-SE Free span End

DA-DRE Concrete Removal End Coating FS-SIE Intermittent End Free span

DA-DRS Concrete Removal Start Coating FS-SIS Intermittent Start free span

DA-LK Pipeline Leak FS-SS Free Span Start

DA-PD Pipeline Damaged FS-TD Touchdown

DA-PK Pipeline Kink SF-MG Marine Growth

DA-PM Pipeline Movement SF-MGE Marine Growth End

DB-AC Anchor SF-MGS Marine Growth Start

DB-DAD Area Of Debris SF-OC Outcrop

DB-DC Chain SF-OSF Other Seabed Features

DB-DW Wire / Cable SF-RO Rock

DB-DFN Fishing Net SF-ROE Rocky Outcrop End

DB-DFT Fish Trap Basket / Fishing SF-ROS Rocky Outcrop Start

DB-DM Metallic S-CS Cylindrical support

DB-DN Non Metallic S-GB Grout Bag support

DB-DOH Other Hard Debris S-GH Gravel Heap

DB-DOS Other Soft Debris S-MS Mechanical support

DB-DSC Scaffold S-MT Mattress

DB-DSR Soft Rope S-MTE Mattress End

DB-DT Tire S-MTS Mattress Start

DB-PC Pipe Cut S-SB Sand Bag

ROV Pipeline Inspection - YYYY Page: VI XXX-RP-OP-XXX

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Event Code Definitions

Event Code Description Event Code Description

S-SL Sleeper U-E End of Survey

ST-BA Buckle Arrested U-S Start of Survey

ST-GB Grout bags VI-VNE No Visibility End

ST-IL Link Lock Mattress VI-VNS No Visibility Start

ST-IM Mattress VI-VPE Poor Visibility End

ST-MA Mechanical Anchor VI-VPS Poor Visibility Start

ST-ME Mattress End X-XCO Crossing Cable Over

ST-MS Mattress Start X-XCU Crossing Cable Under

ST-RDE Rock Dump End X-XPO Crossing Pipe Over

ST-RDS Rock Dump Start X-XPU Crossing Pipe Under

ST-SB Sand Bag

ST-SB Saddle Block

Table 20: Event Code Definitions

ROV Pipeline Inspection - YYYY Page: VII XXX-RP-OP-XXX

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Appendix D – Complete Event Listing

ROV Pipeline Inspection - YYYY Page: VIII XXX-RP-OP-XXX

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Table 21: Pipeline Name Pipeline – Complete Event Listing

Pipeline Name Pipeline- Complete Event Listing

Event ID Event Code KP Easting (m) Northing (m) TOP Depth (m) Seabed Depth (m) Description

ROV Pipeline Inspection - YYYY Page: IX XXX-RP-OP-XXX

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Appendix E – Pipeline Coordinate Listing

ROV Pipeline Inspection - YYYY Page: X XXX-RP-OP-XXX

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Table 22: Pipeline Name Pipeline – Pipeline Coordinate Listing

Pipeline Name Pipeline - Pipeline Coordinate Listing

KP Easting (m) Northing (m) TOP Depth (m)

ROV Pipeline Inspection - YYYY Page: XI XXX-RP-OP-XXX

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Appendix G – Inspection Alignment Charts

ROV Pipeline Inspection - YYYY Page: XII XXX-RP-OP-XXX

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The table below presents the charts which are associated with this report

Pipeline Name Pipeline - Associated Charts

Drawing Number Rev No. Description Scale

Table 23: Pipeline Name Pipeline – Associated Charts

ccc inspection pipeline report

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