dnv-rp-a201: standard documentation types · dnv-rp-a201 standard documentation types november...

RECOMMENDED PRACTICE

DET NORSKE VERITAS

DNV-RP-A201

STANDARD DOCUMENTATION TYPES

NOVEMBER 2000

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FOREWORD

DET NORSKE VERITAS (DNV) is an autonomous and independent foundation with the objectives of safeguarding life, prop-erty and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification and consultancyservices relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carries out researchin relation to these functions.

DNV Offshore Codes consist of a three level hierarchy of documents:

— Offshore Service Specifications. Provide principles and procedures of DNV classification, certification, verification and con-sultancy services.

— Offshore Standards. Provide technical provisions and acceptance criteria for general use by the offshore industry as well asthe technical basis for DNV offshore services.

— Recommended Practices. Provide proven technology and sound engineering practice as well as guidance for the higher levelOffshore Service Specifications and Offshore Standards.

DNV Offshore Codes are offered within the following areas:

A) Qualification, Quality and Safety Methodology

B) Materials Technology

C) Structures

D) Systems

E) Special Facilities

F) Pipelines and Risers

G) Asset Operation

DET NORSKE VERITAS

Recommended Practice DNV-RP-A201, November 2000

CONTENTS

1. GENERAL .............................................................. 5

1.1 Organisation of the documentation types .............5

1.2 General requirements to all documentation .........5

1.3 References ................................................................5

1.4 Abbreviations...........................................................5

1.5 Verbal forms ............................................................5

1.6 Qualifications ...........................................................5

2. STANDARD DOCUMENTATION TYPES ........ 6

2.1 Discipline A – Administration ................................6

2.2 Discipline B – Stability and load line .....................62.2.1 General................................................................................ 62.2.2 B020 – Stability analysis .................................................... 62.2.3 B030 – Inclining test and lightweight survey procedure .... 62.2.4 B040 – Inclining test or lightweight survey report ............. 72.2.5 B050 – Preliminary stability manual .................................. 72.2.6 B060 – Final stability manual............................................. 92.2.7 B070 – Lines plan and offset tables.................................... 92.2.8 B080 – External watertight integrity plan .......................... 92.2.9 B090 – Internal watertight integrity plan............................ 92.2.10 B100 – Freeboard plan........................................................ 92.2.11 B110 – List of watertight and weathertight items .............. 9

2.3 Discipline C – Mechanical ...................................102.3.1 C020 – Design criteria ......................................................102.3.2 C030 – Assembly or arrangement drawing ...................... 102.3.3 C040 – Detailed drawing ..................................................102.3.4 C050 – Design analysis ....................................................102.3.5 C060 – Non-destructive testing (NDT) methods, extent and

criteria ...............................................................................10

2.4 Discipline D – Drilling ...........................................10

2.5 Discipline E - Electrical ........................................102.5.1 E020 – Overall single line diagram ..................................102.5.2 E030 – Principal cable routing sketch ..............................102.5.3 E040 – Cable selection philosophy...................................102.5.4 E050 – Alternating current (AC) power consumption

balance ..............................................................................102.5.5 E060 – Alternating current (AC) power consumer list.... 102.5.6 E070 – Direct current (DC) power consumption balance 102.5.7 E080 – Direct current (DC) power consumer list .............102.5.8 E090 – Discrimination analysis ........................................ 102.5.9 E100 – Table of Ex-installation........................................ 112.5.10 E110 – Electrical system calculations ..............................112.5.11 E120 – Cable data sheet and design drawing ...................112.5.12 E130 – Electrical data sheet, general ................................112.5.13 E140 – Electrical data sheet, semiconductor assemblies..112.5.14 E150 – Assembly schedules and technical data ............... 112.5.15 E160 – Strength calculation with respect to short circuit .122.5.16 E170 – Internal arc withstanding report ...........................122.5.17 E180 – Electrical schematic drawing ...............................122.5.18 E190 – Switchboard layout...............................................122.5.19 E200 – Lighting description .............................................12

2.6 Discipline F – Information technology ................12

2.7 Discipline G – Safety ............................................122.7.1 G020 – Risk analysis ........................................................122.7.2 G030 – Emergency and preparedness analysis.................122.7.3 G040 – Design accidental load specification....................122.7.4 G050 – Fire control plan................................................... 122.7.5 G060 – Safety control plan ...............................................122.7.6 G070 – Structural fire protection drawing........................122.7.7 G080 – Source of release schedule ...................................122.7.8 G090 – Hazardous area classification drawing ................122.7.9 G100 – Area safety chart or fire protection data sheet .....132.7.10 G110 – Escape and evacuation study ...............................132.7.11 G120 – Dispersion study ..................................................132.7.12 G130 – Escape route drawing...........................................132.7.13 G140 – Cause and effect diagram.....................................13

2.8 Discipline H – Hull and structure .......................132.8.1 H020 – Structural design brief..........................................13

2.8.2 H030 – Design load plan .................................................. 132.8.3 H040 – Plan for spaces and tanks ..................................... 132.8.4 H050 – Structural categorisation plan .............................. 142.8.5 H060 – Structural drawing ............................................... 142.8.6 H070 – Shell expansion drawing...................................... 142.8.7 H080 – Standard details.................................................... 142.8.8 H090 – Design analyses ................................................... 142.8.9 H100 – Model test documentation.................................... 142.8.10 H110 – Equipment number calculation ............................ 142.8.11 H120 – Loading manual ................................................... 142.8.12 H130 – Docking arrangement plan................................... 142.8.13 H140 – Fabrication specification...................................... 14

2.9 Discipline I – Instrumentation ............................ 152.9.1 I020 – Control and monitoring system functional

description ........................................................................ 152.9.2 I030 – Control and monitoring system block diagram ..... 152.9.3 I040 – Control and monitoring system user interface ..... 152.9.4 I050 – Control and monitoring system power supply

arrangement ...................................................................... 152.9.5 I060 – Control and monitoring system cable routing sketch

152.9.6 I070 – Instrument list........................................................ 152.9.7 I080 – Instrument data sheets with environmental

specifications .................................................................... 152.9.8 I090 – Schematic description of input and output circuits15

2.10 Discipline J – Marine operations ........................ 15

2.11 Discipline K – Inspection...................................... 152.11.1 K020 – Facility plan for in-service inspection ................. 15

2.12 Discipline M – Materials ...................................... 152.12.1 M020 – Material specification, metals ............................. 152.12.2 M030 – Material specification, fire related properties ..... 162.12.3 M040 – Material specification, non-metallic materials.... 162.12.4 M050 – Coating specification........................................... 162.12.5 M060 – Cathodic protection specification, calculation and

drawings............................................................................ 162.12.6 M070 – Welding procedures ............................................ 162.12.7 M080 – List of combustible mterials................................ 16

2.13 Discipline N – Navigation .................................... 162.13.1 N020 – Bridge design drawing......................................... 162.13.2 N030 – Field of vision drawing........................................ 16

2.14 Discipline O – Operation ...................................... 162.14.1 O020 – Unit operation manual ......................................... 16

2.15 Discipline P – Process ........................................... 172.15.1 P020 – Flow diagram........................................................ 172.15.2 P030 – Sizing calculations................................................ 172.15.3 P040 – Temperature calculations ..................................... 172.15.4 P050 – Materials selection report ..................................... 172.15.5 P060 – Flare heat radiation study ..................................... 172.15.6 P070 – Safety analysis tables............................................ 172.15.7 P080 – Pressure vessel integrity study ............................. 172.15.8 P090 – Flare and blowdown system report ...................... 17

2.16 Discipline Q – Quality management.................... 172.16.1 Q020 – Quality manual..................................................... 172.16.2 Q030 – Process control procedure.................................... 172.16.3 Q040 – Document control procedure ............................... 172.16.4 Q050 – Construction schedule.......................................... 172.16.5 Q060 – Document register................................................ 17

2.17 Discipline S – Piping ............................................ 172.17.1 S020 – System diagram (P&ID)....................................... 172.17.2 S030 – Pressure drop analysis .......................................... 172.17.3 S040 – Capacity analysis.................................................. 172.17.4 S050 – Hydraulic or pneumatic control diagram.............. 172.17.5 S060 – Connections to the shell and to sea chests............ 182.17.6 S070 – Pipe routing sketch ............................................... 182.17.7 S080 – Pipe stress analysis ............................................... 182.17.8 S090 – Thermal stress analysis......................................... 182.17.9 S100 – Specification of piping, valves, flanges and fittings

182.17.10 S110 – Line index............................................................. 18

2.18 Discipline T – Telecommunications .................... 182.18.1 T020 – Communication system functional description.... 18

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2.18.2 T030 – Communication system block diagram ................182.18.3 T040 – Communication system user interface..................182.18.4 T050 – Communication system power supply arrangement.

182.18.5 T060 – Communication system cable routing sketch .......182.18.6 T070 – Communication system data sheets with

environmental specifications ............................................19

2.19 Discipline U – Subsea ...........................................19

2.20 Discipline V – Heat, ventilation and air conditioning ...........................................................19

2.20.1 V020 – System diagram (D&ID)......................................192.20.2 V030 – Pressure drop analysis ..........................................192.20.3 V040 – Capacity calculation .............................................192.20.4 V050 – Hydraulic or pneumatic control diagram .............192.20.5 V060 – Duct routing sketch ..............................................192.20.6 V070 – Penetration drawings............................................192.20.7 V080 – Flow diagram .......................................................19

2.21 Discipline W – Soil and foundation ....................192.21.1 W020 – Typical soil conditions ........................................192.21.2 W030 – Soil investigation report ......................................192.21.3 W040 – Pile foundation design.........................................192.21.4 W050 – Gravity foundation design...................................192.21.5 W060 – Anchor foundation design ...................................19

2.22 Discipline Y – Pipeline ......................................... 19

2.23 Multidiscipline Z................................................... 192.23.1 Z020 – General arrangement plan.....................................192.23.2 Z030 – Local arrangement plan ........................................192.23.3 Z040 – System arrangement plan .....................................202.23.4 Z050 – Unit specification..................................................202.23.5 Z060 – System design philosophy ....................................202.23.6 Z070 – System functional description ..............................202.23.7 Z080 – Failure mode description ......................................202.23.8 Z090 – Reliability and availability analysis......................202.23.9 Z100 – Equipment list.......................................................202.23.10 Z110 – Specification .........................................................202.23.11 Z120 – Data sheet .............................................................202.23.12 Z130 – Test procedure at manufacturer ............................202.23.13 Z140 – Report from test at manufacturer..........................202.23.14 Z150 – Test procedure for quay or sea trial ......................202.23.15 Z160 – Report from quay or sea trial................................202.23.16 Z170 – Operation manual .................................................202.23.17 Z180 – Installation manual ...............................................202.23.18 Z190 – Maintenance manual.............................................202.23.19 Z200 – List of signboards .................................................212.23.20 Z210 – Environmental regularity number (ERN) calculation

21

DET NORSKE VERITAS


1. General

1.1 Organisation of the documentation typesThe standardised documentation types defined in this docu-ment are organised according to engineering disciplines.

The following engineering disciplines are used:

1.2 General requirements to all documentationEnglish language should be used. Other languages may beused upon special agreement.

The documentation may be submitted on paper or as an elec-tronic file. For electronic files, the format and transfer methodshall be agreed.

Each drawing shall include a title field stating:

— name of unit (when known)— name of document issuing company— name and signature of originator and verifier— document number— document title— revision nunber— issue date— scale— set of measurement units used in the document, e.g. Sys-

tem International.

Symbols used shall be explained, or reference to a standardcode shall be given.

Any documents submitted for re-approval or re-examinationshall be specially marked to identify the revised parts.

The document title should not include the name of the unit. Thedocument title should include the system, function, structuralregion or equipment covered by the document.

Unique revision numbers shall be allocated to all issues of adocument, including the first issue. For documents with multi-

ple sheets, the revision number should be the same for allsheets.

1.3 References

1.4 Abbreviations

1.5 Verbal forms

Shall: Indicates a mandatory requirement to be followed forfulfilment or compliance with the present recommended prac-tice.

Should: Indicates a recommendation that a certain course ofaction is preferred or particularly suitable. Alternative coursesof action are allowable, but shall be justified and documented.

May: Indicates a permission, or an option, which is permitted.

Can: Requirements with can are conditional and indicate apossibility.

Table 1-1 Engineering disciplinesCode Title

A AdministrationB Stability and load lineC MechanicalD DrillingE ElectricalF Information technologyG SafetyH Hull and structureI InstrumentationJ Marine operationsK InspectionLM MaterialsN NavigationO OperationP ProcessQ Quality managementRS PipingT TelecommunicationsU SubseaV Heat, ventilation and air conditioning (HVAC)W Soil and foundationsXY Risers and pipelinesZ Multidiscipline

Table 1-2 ReferencesReference Issuing body and titleAPI RP14C American Petroleum Institute: Recommended

Practise for Analysis, Design, Installation, and Testing of Basic Surface Safety Systems for Off-shore Production Platforms

DNV-OS-E301 Det Norske Veritas: Position MooringIEC 60298 International Electrotechnical Commission: A.C.

metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

ILLC 1966 International Maritime Organisation: Internation-al Convention on Load Lines, 1966

IMO Resolution A.760(18)

International Maritime Organisation: Symbols for Use in accordance with Regulation III/9.2.3 of the 1974 SOLAS Convention, as amended

ISO 8501-1 International Standardisation Organisation: Prep-aration of Steel Substrates before Application of Paint and Related Products – Visual Assessment of Surface Cleanliness

MODU Code 1989

International Maritime Organisation: Code for the Construction and Equipment of Mobile Offshore Units, 1989

Table 1-3 AbbreviationsAbbreviation Full textAC Alternating currentD&ID Duct and instrument diagramDC Direct currentEMC Electromagnetic compatibilityERN Environmental regularity numberGM Metacentric heightGZ Righting leverHAZOP Hazard and operability studyHVAC Heat, ventilation and air conditioningIP Ingress protection of enclosuresLCG Longitudinal centre of gravityNDE Normally de-energisedNDT Non-destructive testingNE Normally energisedP&ID Pipe and instrument diagramSN Stress and number of cyclesTE The time it takes for a motor, starting from the nor-

mal operating temperature, to reach the temperature given by the temperature class of the Ex certificate if the rotor is locked

UPS Uniterruptible power supplyVCG Vertical centre of gravity

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1.6 QualificationsAll statements and requirements given in this recommendedpractice shall be understood ‘as applicable’ or ‘as relevant’ forthe unit in question. Such qualifications are therefore not in-cluded in the text describing the individual standard documen-tation types.

2. Standard documentation types

2.1 Discipline A – AdministrationNo special standard documentation types are defined for theadministration discipline.

2.2 Discipline B – Stability and load line

2.2.1 GeneralThe following paragraphs describe the documentation neededin order to approve the stability of a mobile offshore unit. TheMODU Code 1989 contains requirements to operation manu-als, which also includes stability information. The documenta-tion requirements to the preliminary and final stability manualdescribed in the following cover the MODU Code 1989 re-quirements related to stability information in the operationmanual. The owner has the option to include the content of thestability manual in the operation manual or to keep the stabilitymanual as a stand-alone document that is referred to in the op-eration manual.

2.2.2 B020 – Stability analysisThe purpose of the stability analysis is to document the deter-mination of the limiting maximum allowable VCG (verticalcentre of gravity), and eventually other limitations related tofloatability and stability. These are the limits that the unit mustbe operated within in order to comply with rules and regula-tions.

The maximum allowable VCG depends on the following fac-tors:

— buoyant parts of the hull, superstructures and deck houses— wind exposed portions of the unit— internal subdivision— external watertight integrity— internal watertight integrity.

The stability analysis shall contain documentation on the fol-lowing:

— rules and regulations and their corresponding intact anddamage stability criteria

— description of the unit, volumes included as buoyant, inter-nal subdivision and watertight arrangement

— definitions of axis, baseline, etc.— hydrostatic tables— cross curves of stability.

Documentation of wind forces

The documentation may either be a report from a wind tunneltest carried out by a recognised institute or detailed calculationcarried out in accordance with the recommendations of the rel-evant regulations. The documentation of the wind tunnel testand the detailed calculations shall contain a detailed and recog-nisable description of the model. The wind forces should bedocumented from the lightest draught up to the maximum op-erational draught. The wind forces should be documented forheeling angles from upright position and to at least 30 degreeswith steps not exceeding 10 degrees. For ship shaped units it issufficient to determine the wind forces at the upright positionand assume the forces to vary as a cosine function of the heel-ing angle. Horizontal surfaces, such as helicopter deck shouldbe taken into account. For units of an arbitrary shape, where

both the stability particulars and the wind forces vary with theattacking angle, the wind forces shall be determined for therange of attacking azimuth angles about the unit from forwardto aft in steps not exceeding 15 degrees. The wind forcesshould normally be determined when the unit is assumed freefloating, i.e. uprighting effects from anchoring etc. shall not betaken into account. For units equipped with dynamic positionkeeping system, the heeling forces shall take into account theadverse effect of the thruster system. I.e. the wind forces areassumed to act about the centre of the thrusters.

Documentation of compliance with intact stability criteria

A summary table showing the results of intact stability calcu-lation covering a draught range from light ship and to the max-imum operational draught. The summary table should indicatethe main results for each azimuth angle, compliance with eachcriterion and reference to the detailed results, preferably in-cluded as an appendix. 100 knots wind speed shall be appliedfor severe storm conditions and 70 for operational and transitconditions. If a specific severe storm draught has not beenspecified, 100 knots shall be used for the complete draughtrange.

Documentation of compliance with damage stability criteria

A summary table showing details of the most severe damagecases at each draught, including azimuth angles and coveringthe draught range from lightship to the maximum operationaldraught. For column stabilised units the damage stabilityshould normally be documented at the fixed draughts only,such as at the transit and operational draught. The detailed re-sults from the damage stability calculations should be includedas an annex to the report. The results from the detailed calcu-lation of damage stability should at least consist of plot of eachdamage case, plot of righting lever (GZ)-curves and wind heel-ing arm. Flooding angles shall be indicated on the plots.

Ballasting curves

For column stabilised unit, the severe storm draught may bedifferent from the transit draught and the operational draught.Maximum allowable VCG curves shall be developed, on thebasis that the unit can reach the severe storm draught by use ofballast water only, i.e. without relocation or dumping of fixedloads. If the unit is operating in a geographic location wherethe weather conditions do not annually or seasonally becomesufficiently severe to require a unit to go to a severe storm con-dition relocation of fixed loads may be accepted if the detailedprocedures are included in the stability manual (B050 orB060).

Resulting maximum allowable VCG curve

The resulting maximum allowable VCG curve should be plot-ted in an easily readable format. Any limitations, such as tanksto be kept full at given draughts, lowering of legs etc, shall beclearly stated.

2.2.3 B030 – Inclining test and lightweight survey proce-dure

When the unit is completed an inclining experiment shall becarried out in order to determine the correct weight and centresof gravity. The procedure for the inclining test should containdetails on the following:

— time and place— loading condition at the test. It is of imperative importance

to avoid draughts at which the waterplane area changessignificantly during the inclining. The loading conditionshould have as few slack tanks as possible. Empty tanksshould be completely dried

— the shifting procedure— the pendulum arrangement— draught reading procedures— estimated foreign and missing weights.

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For a series of sister units, a lightweight survey may be accept-ed in lieu of an inclining test. This will depend on:

— type of unit— time span of building— whether the units are built for the same owner— dissimilarities between the units— approved inclining test of the first unit— unaccounted difference in lightweight data from the esti-

mate and the lightweight survey should not exceed 1%— unaccounted difference in lightweight data from the in-

clining test and the lightweight survey should not exceed1%.

The procedure for the lightweight survey is the same as for theinclining test except inclining weights, shifts and pendulums.

2.2.4 B040 – Inclining test or lightweight survey report

The report shall contain the actual records from the incliningtest or lightweight survey as well as the following calculations:

— displacement corrected for draught, trim, sagging and hog-ging and for actual seawater density

— foreign, missing and mislocated weights and their position— inclining moments and the corresponding heeling angles

(only for inclining tests). This shall be presented in formof a table and a diagram

— calculation of metacentric height (GM) based on the leastsquare method (only for inclining tests)

— calculation of lightweight data; weight, longitudinal centerof gravity (LCG) and VCG (VCG only for inclining tests).

For sister units, if the difference between lightweight data issufficiently small and within the accuracy or tolerance of in-clining tests or lightweight surveys (difference in lightweightis within 0.5% and difference in LCG is within 0.5% of thelength between perpendiculars), the lightweight data of thefirst units may be used for the sister unit; i.e. identical final sta-bility documentation may be accepted for the sister unit as forthe first unit.

2.2.5 B050 – Preliminary stability manual

The following is the general contents of the preliminary stabil-ity manual. This content shall be adjusted in accordance withthe requirements of rules and regulations.

Main particulars

The unit's identification, main dimensions, maximum draught,maximum trim and service information. A copy of the generalarrangement plan (Z020) shall be included.

Rules and regulations

Reference to the rules and regulations that are basis for approv-al and brief list of the corresponding stability requirements.

Stability model

Sketch of volumes contributing to buoyancy in intact and dam-age stability calculations.

Reference system and baseline

These shall be clearly defined and maintained throughout thestability manual.

Lightweight data, preliminary

Based on estimation or data from sister unit.

Deadweight data

Weights and position of gravity centre of typical dead-weightgroups or items to facilitate calculation of loading conditionssuch as “consumables departure”, “consumables arrival” orstandard cargo loads, etc.

Tank data

Plan for spaces and tanks (H040) with following informationon each tank:

— tank name and number— type— volume— centre of gravity and its maximum free surface effect.

Guidance note:The plan for spaces and tanks is also part of the design basis forstructural design, see H040.

---e-n-d---of---G-u-i-d-a-n-c-e---n-o-t-e---

Draught marks

The position of draught marks and an explanation how to cal-culate from draught readings the corresponding draught to beused in tables for hydrostatic data, cross curves and VCG limitcurves.

Hydrostatic data

The hydrostatic data shall be presented on extreme draught ba-sis in tabular form, from lightweight draught to above maxi-mum draught with steps not exceeding 0.10 m.

In cases where the unit is intended to operate with trim, the hy-drostatic data must cover the trim range. Alternatively, trimcorrection tables shall be included.

The following hydrostatic data shall be presented:

— displacement moulded (m3)— displacement extreme (tonnes)— tonnes per centimetre immersion— vertical centre of buoyancy— longitudinal centre of buoyancy— transverse metacentre— longitudinal metacentre.

Watertight integrity

Position of non-weathertight openings or margin line used forintact and residual damage stability calculations.

Position of non-watertight and unprotected openings used forstability calculations.

The external watertight integrity plan (B080) and the internalwatertight integrity plan (B090) shall be included.

Limit curves or maximum allowable VCG curves, general

The draught reference point shall be same as for hydrostaticdata.

The limit curves may be presented on an extreme draught ordisplacement basis in tabular or curves form from lightweightdraught to maximum draught.

In cases where the unit is intended to operate with trim, thelimit curves must cover the trim range.

The limit curves shall satisfy all stability requirements of therules and regulations.

Any limitation or conditions related to the application of thelimit curves shall be clearly stated on the curves.

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Limit curves or maximum allowable VCG-curves, column-sta-bilised units

The allowable VCG-curve shall reflect the lowest VCG-valuesobtained for the most critical heeling axis at each draught. Theunit shall be assumed free to trim when heeled.

In cases where a change in draught is necessary to reach thesurvival draught, ballasting and deballasting curves should beworked out and included in the stability manual as follows:

Curve A: Ballasting from transit draught to survival draught

Curve B: Deballasting from operating draught to survivaldraught.

For column stabilised units, these curves should be based onballasted or deballasted water at half the pontoon height andpossible transfer of mud. Curves A and B shall be regarded asthe final maximum allowable VCG-curves for checking the ac-tual loading conditions. The ballast curve A and B may be de-rived by taking into account the actual changes in loadingconditions brought about by the change in the operating modesuch as change in mooring loads, removal of hook load, dis-connection of marine riser, etc., provided that such underlyingassumptions are clearly stated.

Maximum allowable VCG-curves, self-elevating units

For self-elevating units, it is normally only relevant to drawcurve I and curve II, as described above. Curve I covers thefield move conditions, while Curve II together with the curvedeveloped from damage stability requirements covers theocean tow conditions.

Special loads and moments

Special loads such as ice loads and crane loads, shall be pre-sented as required by the rules and regulations.

Loading conditions

The presented loading conditions should include the standardloading conditions required by the rules and regulations. For acolumn stabilised unit the following conditions should be pre-sented:

— transit condition with maximum deck load and anchors on-board

— severe storm condition from transit, same distribution ofloads except ballast water

— operational condition with maximum deck load and equip-ment in the most unfavourable position

— severe storm condition from operational condition (samedistribution of loads except ballast water, the marine riserdisconnected and a reasonable amount of drill pipes storedin the derrick)

— same as above with ice load.

Self-elevating unit:

— maximum loaded for ocean tows— maximum loaded for field moves— same as above with ice loads.

Drill ship:

— departure fully loaded with maximum deck load (100 %consumables)

— arrival fully loaded with maximum deck load (10 % con-sumables)

— moored at the field, alternatively dynamically positioned— same as above with ice load.

Oil storage unit:

— recommended loading and offloading sequences— same as above with ice load.

Any other kind of unit:

— loading conditions reflecting the most onerous loading ofthe unit consistent with the intended operational practice

The presented loading conditions should cover the intendedrange of service modes including the most unfavourable load-ing conditions.

The presented loading conditions should be within the limitcurves.

The following minimum information should be given for eachloading condition:

— individual weights, centre of gravity and free surface mo-ment for slack tanks

— total weight and corrected centre of gravity— extreme draughts and total trim— corrected GM— maximum allowable VCG or minimum required GM. GZ

curves should be plotted.

A summary of the loading conditions shall be presented in atabular form giving information above except individualweights and GZ curves.

Lightweight definition and forms for lightweight recording

The estimated lightweight data and definition should be in-cluded together with blank forms and instructions for continu-ous follow up on lightweight alteration.

Guidance note:This item does not have to be presented for preliminary approval,but should be included in the final stability manual (B060).


General procedures for deballasting or counterflooding incase of damage

General procedures in case of damage should be indicated.These may be simple guidelines such as advice on emptyingloaded tanks in the vicinity of the damage, closing of doors,etc.

Guidance in determining the cause of unexpected list

General procedures should be given in order to avoid that cor-rective measures are taken before the consequences are prop-erly considered.

Notes on stability

— general precautions against capsizing— instructions on checking the stability— free surface correction— use of limit curves— stability limitations regarding loading of the unit— instructions on emergency situations (storm or damage).

Table 2-1 Limit curves or maximum allowable VCG-curves, column-stabilised unitsCurve Conditions Values

I

Operation and transit conditions

Maximum VCG-values according to the in-tact stability criteria with 70 knots wind and damage stability criteria with 50 knots wind. The curve should at least cover the operation and transit draughts.

II

Survival conditions

Maximum VCG-values according to the in-tact stability criteria with 100 knots wind. The curve should at least cover the range from maximum operation draught to minimum storm draught.

III

Temporary conditions, column sta-bilised units

Maximum VCG-values according to the in-tact stability criteria with 70 knots wind ex-cept that the minimum GM-requirement is 0.3 m. The curve shall cover the whole range of draughts

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Guidance note:This item does not have to be presented for preliminary approval,but it must be included in the final stability manual (B060).


Worked example on stability

A complete worked example on calculating and checking thestability of a loading condition



Blank stability forms

Blank forms for calculating and checking the stability for actu-al loading conditions.



Deadweight scale



Conversion tables



2.2.6 B060 – Final stability manual

The final stability manual should have the same content as thepreliminary stability manual, however updated with respect tothe approved lightweight data.

2.2.7 B070 – Lines plan and offset tables

The following drawings should be included:

— offset tables— body plan— profile (elevation)— lines plan (waterlines).

The following information should be included:

— definition of base line or reference system— stations or frame spacing— appendages, both positive and negative— superstructure and deckhouses contributing to buoyancy

in intact or damage stability calculations.

2.2.8 B080 – External watertight integrity plan

The plan should contain information on all external openings(air pipes, ventilators, hatches, doors, etc.) of volumes affect-ing stability calculations.

The following information should be shown on the plan:

— position of opening (longitudinal, transverse and vertical)— type of closing appliance (watertight, weathertight or un-

protected)— alarms, indicators, remote controls and signboards fitted

for each opening or closing appliance— spaces that each opening leads to

— beach lines showing the extent of the weathertight zoneaccording to intact stability requirements and the water-and weathertight zones according to damage stability re-quirements should be indicated.

This information may be included in the freeboard plan(B100).

2.2.9 B090 – Internal watertight integrity planThe plan should contain items affecting damage stability cal-culations, such as internal subdivision, possibility of progres-sive flooding from one compartment to another throughinternal openings, pipes, tunnels or ventilation ducts and pipes,ducts, tunnels in the damage penetration zone specified in thedamage assumptions.

The following information should be shown on the plan:

— internal watertight boundaries, e.g. bulkheads, decks andtunnels

— internal openings in these boundaries, e.g. doors, hatches,stairways and ventilation ducts

— spaces each opening leads to (for ventilation ducts)— type of closing appliance, e.g. doors, hatches and valves— alarms, indicators, remote controls and signboards fitted

for each opening or closing appliance— marking of the damage penetration zone, as specified in

the damage assumptions, on various waterlines or decksand cross sections

— pipes, ducts, tunnels in the marked damage penetrationzone and spaces where these lead to

— design pressure heights for watertight bulkheads anddecks.

2.2.10 B100 – Freeboard planThe freeboard plan shall provide a drawing of and informationabout the following:

— deepest draught according to ILLC 1966 certificate— waterline showing equilibrium position at first intercept

between righting and wind heeling moment curves in dam-age condition

— waterline according to area requirement of righting andwind heeling moment curves, either in intact or damagecondition, whichever is most severe

— parts of the structure that are included in the buoyancy vol-umes

— location of:

— doors— side scuttles and windows— hatches— ventilators— air pipes— openings in sides— scuppers and sanitary discharges and garbage chutes— operation of valves for sea inlets and outlets— freeing arrangements— guard rails and bulwarks— gangway, passageway, under deck passage and life

line— ports in sides, bow and stern.

2.2.11 B110 – List of watertight and weathertight itemsA list of external openings and their closing appliances, includ-ing:

— type of closing appliance, e.g. watertight, weathertight ornot protected

— position of openings given by longitudinal, transverse andvertical co-ordinates

— vertical distance from lower edge of opening to the mostsevere waterline, damage or intact.

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2.3 Discipline C – Mechanical

2.3.1 C020 – Design criteria

Dimensioning criteria, e.g.:

— applied loads, static and dynamic— rating with respect to power, temperature, pressure, etc.— environmental conditions.

2.3.2 C030 – Assembly or arrangement drawing

A drawing showing how the parts of a mechanical assemblyare arranged together.

2.3.3 C040 – Detailed drawing

A drawing showing the scantlings and arrangement of the ob-ject. Material specifications shall be included on the drawing,or a reference shall be made (see M020 and M040).

For important components of welded construction, full detailsof joints, welding procedure, filler metal particulars and heattreatment after welding shall be specified.

2.3.4 C050 – Design analysis

A document providing:

— objectives— premises— assumptions— conclusions

relating to analysis of:

— static strength— dynamic strength— vibration.

2.3.5 C060 – Non-destructive testing (NDT) methods, extent and criteria

A document describing the methods, extent and criteria for thenon-destructive testing that shall be performed.

2.4 Discipline D – DrillingNo special standard documentation types are defined for thedrilling discipline.

2.5 Discipline E - Electrical

2.5.1 E020 – Overall single line diagram

A diagrammatic drawing showing:

— distribution system layout including identification of allswitchboards and distribution boards

— system voltages and system earthing— number and rating of generators. If a prime mover is also

used for driving other machinery, this shall be stated onthe overall single line diagram

— number and rating of earthing resistors or earthing trans-formers in the distribution system

— number and rating of all transformers in the distributionsystem

— number and rating of any major consumers— rating and short circuit strength (peak value at half period

and symmetrical root mean square) for all switchboards inthe distribution system

— values from system calculations, see documentation typeE110 (short circuit currents, harmonic distortion whenmore than 20% of the connected generator capacity is fedto semiconductor assemblies, voltage drop when a motorrated above 30% of feeding the generators’ power is start-ed directly on line).

2.5.2 E030 – Principal cable routing sketch

A sketch showing the principal cable routing, including princi-pal routing to redundant consumers and routing of emergencypower distribution in relation to normal power distribution to-gether with information on fire divisions and high fire risk ar-eas. The information shall be presented as a principal sketch,not as detailed drawings for all cable routings.

2.5.3 E040 – Cable selection philosophy

A document stating criteria for selection and dimensioning ofcables with respect to types and sizing for different voltage lev-els and cable lengths.

2.5.4 E050 – Alternating current (AC) power consump-tion balance

A document stating the calculated design values for powerconsumption and available power for operational modes as:

— normal operation— manoeuvring— special operations, e.g. dynamic positioning, thruster as-

sisted position mooring, crane operations, cargo handlingand drilling

— emergency.

Tripping of non-important consumers shall be identified in thecalculation. Load factors may be used in order to adjust in-stalled power to anticipated consumed power. Diversity fac-tors adjusting intermittent consumption to a mean value shallnot be used.

2.5.5 E060 – Alternating current (AC) power consumer list

Separate lists of power consumers for:

— essential services— important services— emergency services.

with notation of connected switchboards and with indication ofredundant equipment.

Battery chargers and uninterruptible power supplies shall belisted with full charging current added to the connected con-sumption.

2.5.6 E070 – Direct current (DC) power consumption bal-ance

A document stating the calculated design values for battery ca-pacities for direct current (DC) and uninterruptible power sup-plies, with operational modes as:

— normal at sea— manoeuvring— emergency mode.

Tripping of non-important consumers shall be identified in thecalculation.

2.5.7 E080 – Direct current (DC) power consumer list

A list of battery and UPS supplied consumers with indicationof redundant consumers.

2.5.8 E090 – Discrimination analysis

A document describing the discrimination for all feeders in thedistribution system including list of all settings of protectionfor short circuit, overcurrent and earth fault. This calculationshall include main switchboards, main distribution boards andincomers on distribution boards. The analysis shall state max-imum and minimum short circuit currents as well as the gener-ator’s decrement curve. If documented by graphical diagrams,these values shall be shown on the diagrams.

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2.5.9 E100 – Table of Ex-installation

A table with compiled information for all equipment that shallbe installed in hazardous areas, or areas that may become haz-ardous by accidental release of explosive gas. The informationlisted in Table 2-2 shall be included:

Guidance note:Certified safe machines and equipment shall also comply withthe requirements to similar equipment for use outside hazardousareas. Especially enclosure protection rating should be observed.This is not verified by the documentation listed in this paragraph,but on site by the site surveyor.


Guidance note:The required documentation shall be submitted together in one“package” making it possible to perform a complete assessmentof the measures taken to safeguard the installation in question.The documentation shall not be submitted as single documentsfor separate approval of each drawing.


2.5.10 E110 – Electrical system calculations

A document stating:

— maximum and minimum voltages from load flow calcula-tions

— calculated short circuit values at main- and emergencyswitchboards, main distribution boards and distribution

boards (peak value at half period and symmetrical rootmean square)

— calculated minimum short circuit values— values of earth fault currents for systems with direct

earthed or resistance earthed neutral— content of voltage harmonic distortion when more than

20% of connected load are by semiconductor assemblies— dimensions of cables in the distribution system— voltage drop calculations at start of large motors, e.g. a

motor rated above 30% of feeding generator or transform-ers rated power

— battery capacity calculations for direct current (DC) sup-plies and uninterruptible power supply systems.

Guidance note:Values from system calculations, as well as equipment rating anddimensions, shall be noted on the overall single line diagrams,see documentation type E020.


2.5.11 E120 – Cable data sheet and design drawingFor cables that are not type approved:

— maker— cable types and number of cores - conductor cross-sections

(mm²)— cross sectional drawing— number of strands in each conductor— insulation thickness (mm)— sheath thickness inner and outer (mm)— braiding core diameter (mm)— overall diameter (mm)— field of application— voltage class root mean square. — insulating material— insulating screening— material inner sheath— material outer sheath— material outer braid— manufacturer’s type test report.

2.5.12 E130 – Electrical data sheet, generalA document stating:

— design values for environmental conditions— intended location onboard— ingress protection (IP) rating— input frequency and voltages, with tolerances— designed short circuit strength (peak value at half period

and symmetrical root mean square)— short-circuit current from feeding network— requirements to cooling and ventilation.

2.5.13 E140 – Electrical data sheet, semiconductor assem-bliesA document stating:

— description of the semiconductor device, with informationof intended use, cooling and type of semiconductor ele-ments

— input and output voltage and frequency, with tolerances— rating (kVA).

2.5.14 E150 – Assembly schedules and technical dataA document stating:

— internal power cable and busbar dimensions in the equip-ment

— table with switchgear rating for power circuits: Nominalcurrent, ultimate breaking current Icu

— consumer ratings— cable dimensions for outgoing cables.

Table 2-2 Ex-installationInformation ele-ment

Description

Identification Tag number or other reference used for mark-ing of the specific equipment. This shall be the same in the documentation as on the physical installation

Equipment type Descriptive title of equipment. E.g. “cable gland”, “fire detector”

Location The zone classification for the location of the equipment, with a reference to the hazardous area classification drawing (G090)

Manufacturer Name and country of manufacturerType designation Manufacturers type designationCertificate number Number on Ex-certificateCertification body Institution issuing the certificate, if not obvi-

ous by the certificate numberEx designation The Ex protection given in the certificateCertificate details Total number of pages in certificate and infor-

mation on the appendix to the certificate where the used variant of the equipment is covered

Special conditions If the certificate number ends with “X” or “U”, compliance with the special conditions given in the certificate shall be stated

Circuit value limits For intrinsically safe circuits, the maximum allowed values for voltage, current, power, re-actance, inductance and/or the reactance/re-sistance ratio shall be listed

Equipment values The values for reactance, inductance and/or the reactance/resistance ratio for equipment used in intrinsically safe circuits shall be listed

Actual circuit val-ues

The total values for reactance, inductance and/or the reactance/resistance ratio for intrin-sically safe circuits shall be listed

TE -time For motors and transformers located in a zone 1, certified as “increased safe”, Ex-e, the TE -time shall be listed together with the release time of the associated short-circuit current protection

IP-rating IP rating of the equipment

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2.5.15 E160 – Strength calculation with respect to short circuitA document providing calculations of the bus-bar strength.Applicable for switchboards rated for short circuit strength inexcess of 50 kA only. Both thermal and mechanical effectsshall be considered.

2.5.16 E170 – Internal arc withstanding reportA document providing a description of switchboard construc-tion and compartment separation, showing that the assemblywill withstand an internal arc, e.g. testing in accordance withIEC 60298 Appendix A. Applicable for all high voltage assem-blies.

2.5.17 E180 – Electrical schematic drawingA schematic drawing showing the configuration of the electri-cal circuit.

2.5.18 E190 – Switchboard layoutA drawing showing the location of instruments and devices foroperation (panel layout).

2.5.19 E200 – Lighting descriptionA document describing the design of normal, emergency, tran-sitional and battery back-up lighting for all areas onboard.

2.6 Discipline F – Information technologyNo special standard documentation types are defined for theinformation technology discipline.

2.7 Discipline G – Safety

2.7.1 G020 – Risk analysisAn analysis including a systematic identification of and cate-gorisation of risk to people, environment, assets and financialinterests. The risk analysis shall include criteria for the accept-able levels of risk in the activities.

Guidance note:The term risk analysis is used in a broad sense. It comprises anumber of different methods for risk analysis, both quantitativeand qualitative, of technical, operational, human and/or organisa-tional nature. The methods for risk analysis must be selected toanswer the needs of the problems to be analysed. Several meth-ods may be applied in parallel or in combination. Thus possibleinteraction between technical, human and organisational aspectsmay be revealed in the assessment of risk.


2.7.2 G030 – Emergency and preparedness analysisA systematic procedure for the purpose of adapting the emer-gency preparedness of the activities to the defined situations ofhazard and accident, in accordance with the specific emergen-cy preparedness requirements for the activity in question.

Guidance note:This is a systematic process in order to establish an emergencypreparedness designed for the characteristics and the identifiedrequirements for the activity concerned. Such analysis should in-clude an assessment of a possible development of the defined sit-uations of hazard and accident. The purpose shall arrive at themost suitable measures to meet the specific emergency prepared-ness requirements of the activity.


2.7.3 G040 – Design accidental load specificationA document providing a summary of loads resulting from thedimensioning accidental events.

Dimensioning accidental event: Accidental event which ac-cording to the defined acceptance criteria represents an unac-ceptable risk, and which consequently serves as basis for

design and operation of installations and otherwise for imple-mentation of the activities.

2.7.4 G050 – Fire control planAn arrangement plan for each deck showing the location, iden-tification and number of:

— control stations— fire sections enclosed by “A” class divisions— fire sections enclosed by “B” class divisions— fire detectors— manual call points— fire detection centrals— fire alarm sounders, e.g. bells or loudspeakers— fire alarm central— sprinkler system, including pipes, pumps, valves and out-

lets— fire extinguishing appliances— means of access to compartments, decks, etc.— ventilation system, including ducts, fans, dampers, inlets

and outlets— gas detectors.

The boundaries for and the identification of the fire areas shallbe shown.

2.7.5 G060 – Safety control planAn arrangement plan for each deck showing the location of:

— two-way VHF radiotelephone apparatus— radar transponders— distress flares— general emergency alarm system activation stations— general emergency alarm system sounders, e.g. bells or

loudspeakers— general emergency alarm system central— public address system microphone stations— public address system loudspeakers— public address system centrals— lifebuoys, with lights, lines and smoke signals— lifejackets for adults and children— immersion suits and anti-exposure suits— survival crafts and their launching stations— rescue boats and their launching stations— lights for illumination of the launching stations— line-throwing appliances— embarkation ladders.

The symbols used shall be in accordance with IMO ResolutionA.760(18).

2.7.6 G070 – Structural fire protection drawingA drawing including the following minimum information:

— extent and thickness of fireproofing, including descriptionof coating or paint for fire protection systems

— blast or firewalls

2.7.7 G080 – Source of release scheduleA schedule of release sources, i.e. points from which a flam-mable gas, vapour or liquid may be released into the atmos-phere, including the following information:

— physical location of source— identification of the physical item that may leak, e.g. a

pipe flange, together with line number, tag number, etc.— grade of release— types of flammable gas, vapour or liquid that may leak— possible leak (m3/h).

2.7.8 G090 – Hazardous area classification drawingAn arrangement plan for each deck showing the location andextent of the hazardous area zones, and the location of:

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— air intakes— exhausts— doors— air locks and openings— type of ventilation, e.g. natural, mechanical or pressurised.

2.7.9 G100 – Area safety chart or fire protection data sheet

For each fire area, a chart detailing:

— fire area identification and location— area classification— type of ventilation— expected personnel occupancy— area enclosure and fire rating— hazards— types and locations of fire detectors— types and locations of gas detectors— location of manual call points— location of manual release points— active fire protection— a matrix relating typical input signals from detectors, re-

lease points, etc. to typical output actions.

2.7.10 G110 – Escape and evacuation study

A document describing and analysing the following:

— escape and evacuation system— methodology used in the analysis, including scenario def-

initions— input data, e.g. number of people onboard, speed of move-

ment and capacity of evacuation means— assumptions— scenario assessments— possible impacts of accidental events on personnel.

2.7.11 G120 – Dispersion study

An analysis covering gas dispersion from gas vents.

2.7.12 G130 – Escape route drawing

Arrangement drawings where the main and secondary escaperoutes are shown. The following shall be identified, includingdimentions:

— escape routes and their directions— escape route connections to other levels and areas— compartments and their functions— safe areas— mustering stations— evacuation means— doors including opening directions— stairs and ladders— life saving appliances.

2.7.13 G140 – Cause and effect diagram

A matrix showing all inputs (causes) to a system and all corre-sponding outputs (effects). This documentation type is rele-vant for safety shutdown systems. Where more than one sheetis necessary for the matrix, the cause and effect diagram shallbe organised according to physical areas of the unit. All causesand effects shall be given a descriptive text, and shall be easilytraceable to the corresponding arrangement plans (Z020, Z030and Z040), system diagrams as P&IDs (S020) and D&IDs(V020) or overall single line diagrams (E020). Informationabout fail-safe mode shall be included for all input and outputlines, see also schematic diagrams of input and output circuits(I090).

2.8 Discipline H – Hull and structure

2.8.1 H020 – Structural design briefA description of the intended procedures to be adopted in thestructural design of the unit. All limit states for the temporaryand operational design conditions shall be considered.

A summary of the items that should be included are listed be-low:

Introduction

— general description of the unit, including main dimensionsand draughts

— class notations— service life of unit— position keeping system description— list of rules, regulations, standards and codes, including re-

visions, that shall be used in the design process.

Description of analysis models

— global analysis models— local analysis models— loadcases to be analysed.

Description of analytical procedures

— evaluation of temporary conditions— consideration of accidental events— evaluation of fatigue loads— air gap evaluation including locations to be considered,

damping, asymmetry factors, disturbed (radiated) waveconsiderations and combined motion response

— establishment of dynamic responses, including methodol-ogy, factors and parameters

— inclusion of ‘built-in’ stresses— consideration of local responses, e.g. those resulting from

mooring and riser loads, ballast distribution in pontoontanks, etc.

— consideration of structural redundancy.

Description of the structural evaluation process

— description of procedures to be utilised for consideringglobal and local responses

— description of fatigue evaluation procedures, including useof design fatigue factors, SN-curves, basis for stress con-centration factors, etc.

— description of procedures to be utilised for code checking.

2.8.2 H030 – Design load planA drawing showing:

— deck uniform (laydown) loads— major loads from heavy equipment, e.g. modules, cranes,

winches, life boat structures, flare tower, risers, etc.

2.8.3 H040 – Plan for spaces and tanksA plan of the unit with location and identification of spaces andtanks. Information about density, volumes, equipment weight,centre of gravity and liquid temperature. Tank loading criteriafor all tanks, including a description of the loading system,with :

— loading arrangements— height of air pipes— loading dynamics— densities— tank testing pressures.

2.8.4 H050 – Structural categorisation planA plan showing the structural categorisation of all main bear-ing structure.

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2.8.5 H060 – Structural drawingA drawing of the main bearing structure providing informationof geometric dimensions, scantlings, material type and gradesand corrosion addition. The drawings shall include:

— shells— decks— bulkheads— longitudinal sections— transverse sections— frameworks— type of welds— inspection category, if not default category— foundations— details— references to standard details (H080).

Openings such as doors, manholes and hatches shall be includ-ed. Penetrations can be shown on separate drawings withunique references in the main structural drawings.

Butt welds and areas with full and partly penetration weldsshall be identified in the drawings. Sizes of fillet welds may begiven as a standard for all welding with fillet welds. If weldingconsumables with deposits of lower yield stress than requiredin the standard, this shall be stated in the drawings.

2.8.6 H070 – Shell expansion drawingA drawing showing the shell expansion including load and bal-last water lines and the extent of the flat part of bottom andsides. For class notation ICE, lines separating forward, amid-ship and aft ice regions, displacement in fresh water and outputof propulsion machinery shall be stated.

2.8.7 H080 – Standard detailsA set of drawings showing standard details used in the struc-ture. Each detail should be identified on the structural draw-ings (H060).

2.8.8 H090 – Design analysesThe design analyses shall document that the structure fulfilsthe different design conditions. The design analyses should in-clude:

— objective— scope— design basis— calculations— discussion of the results— conclusion— references.

The following types of analyses may be relevant:

Motion and hydrodynamic load analysis

A summary of those items normally to be included in the de-sign basis:

— environmental design criteria including parameters for allconditions, including:

— wave description, i.e. sea spectrum, steepness criteria,maximum wave height and wave spreading function

— wind, current, snow and ice description— design temperatures

— design criteria for temporary phase conditions including:

— limiting permanent, variable and environmental crite-ria

— procedures associated with construction, includingmajor lifting operations

— essential design parameters associated with temporaryphases, e.g. mating loadcases, upending, mating weld-

up sequences, crushing tube stiffness, transit phases,transit speed, etc.

— criteria in case of accidents— draughts

— design criteria for the operational phase conditions includ-ing:

— limiting permanent, variable and environmental loadcriteria, including survival

— design loadcase, including global mass distribution— draught— designing accidental event criterias— mooring actions

— basis information necessary for the assessment of air gapsufficiency, including:

— a description of the requirements to be applied— basis model test report

Global analysis

Fatigue analysis

Air gap analysis

Accidental damage analysis

Finite element analysis

— Description of the model

— geometry— element properties, thickness and element axes— description of loadcases— summary and discussion of results— concluding remarks.

2.8.9 H100 – Model test documentationA document containing descriptions of and results from modeltests performed.

2.8.10 H110 – Equipment number calculationFor ship shaped units see Rules for Classification of Ships Pt.3Ch.3 Sec.5.

For other units see DNV-OS-E301.

2.8.11 H120 – Loading manual

A manual describing permissible distribution of cargo and bal-last, including calculation of still water bending moments andshear forces

2.8.12 H130 – Docking arrangement planA drawing showing how the unit shall be supported whiledocking. Calculated forces from blocks shall be included.

2.8.13 H140 – Fabrication specificationA document describing:

— scope, references and definitions— selection of steels; philosophy, link to structural categories— qualification of welding procedures and personnel— fabrication and welding requirements— fabrication tolerances— non-destructive testing methods and extent— repair.

2.9 Discipline I – Instrumentation

2.9.1 I020 – Control and monitoring system functional descriptionA document describing:

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— all functions incorporated in the system— all interfaces towards other systems, including the infor-

mation carriers’ characteristics— system hardware.

For systems that are not computer based:

— one-line diagrams.

For computer based systems:

A description of the basic software installed per hardware unit,comprising:

— a list of all main software modules installed per hardwareunit stating names and version numbers

— a description of the communication software installed onnodes in a network

— descriptions of application software (not program listings)as follows:

— cross reference between the functions and the soft-ware modules that must be operative to maintain eachfunction

— each module with detail level sufficient to understandits function

— data and control flow between software modules— configuration of the software, including priority

schemes— switching mechanisms for redundant systems— tools for system set-up and process equipment config-

uration— plan for software manufacturing.

2.9.2 I030 – Control and monitoring system block dia-gramA drawing showing the major inter-relationships between allparts of the system and interfaces with other systems.

2.9.3 I040 – Control and monitoring system user interface A drawing showing:

— the physical layout and dimensions of each control station— description of the functions allocated each keyboard or

screen— description of individual screen views, e.g. schematics and

colour prints— description of how menus, etc. are operated— list of all alarms and operator messages

Where the alarms or messages are not self-explanatory, addi-tional explanations shall be included.

2.9.4 I050 – Control and monitoring system power supply arrangementA drawing showing the power supply from main and back-upsource:

Electrical supply

A diagram showing connection to distribution boards, batter-ies, converters or UPS, cable type and cross sectional area, andfuse sizes.

Pneumatic supply

A diagram showing connection to compressors, accumulators,reduction valves, dust filter and moisture filter, pipe ratingsand dew point.

Hydraulic supply

A diagram showing connection to hydraulic power units, accu-mulators, pumps and filters, and pipe ratings.

2.9.5 I060 – Control and monitoring system cable routing sketch

A sketch showing the physical routing of all cables being a partof the system. The information shall be presented as a principalsketch, not as detailed drawings for all cable routings.

The sketch shall also show how the requirements to ensureelectromagnetic compatibility (EMC) are implemented withrespect to cable shielding, separation and routing.

2.9.6 I070 – Instrument list

A list stating for each key component :

— system— name of manufacturer— type, etc., necessary to identify the component— working range— set points— cross reference identification (tag number) to system dia-

grams as P&IDs (S020) and D&IDs (V020)— reference to type approval certificate— reference to Ex certificate.

2.9.7 I080 – Instrument data sheets with environmental specifications

Data sheets showing for each key component conformancewith the requirements for environmental conditions.

2.9.8 I090 – Schematic description of input and output circuits

For each type of input and output device, a typical electricalschematic drawing. For each individual input and output de-vice, information about fail-safe mode, i.e. normally energised(NE) or normally de-energised (NDE) operation and what kindof line monitoring that is implemented, e.g. line break, shortcircuit or earth fault.

2.10 Discipline J – Marine operations No special standard documentation types are defined for themarine operations discipline.

2.11 Discipline K – Inspection

2.11.1 K020 – Facility plan for in-service inspection

The plan shall show the types of facilities which are or will beprovided to make important structural parts accessible for sur-vey in accordance with the in-service inspection programme.

2.12 Discipline M – Materials

2.12.1 M020 – Material specification, metals

A document describing:

— scope, references and definitions— production process, delivery condition and chemical re-

quirements— mechanical testing and requirements— inspection and non-destructive testing— repair— dimensions and tolerances— surface protection— certification and marking.

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2.12.2 M030 – Material specification, fire related proper-tiesA document describing fire related material properties.

2.12.3 M040 – Material specification, non-metallic mate-rialsA document describing:

— scope, references and definitions— chemical composition— delivery conditions— production process— testing and requirements— inspection and non-destructive testing— repair— dimensions and tolerances— surface protection— certification and marking.

For reinforced materials, e.g. glass fibre reinforced plastics, inaddition:

— type of reinforcement and production process for reinforc-ing material

— production process of finished, composite material— inspection and non-destructive testing of finished, com-

posite material— repair— dimensions and tolerances of finished material— surface protection— certification and marking.

2.12.4 M050 – Coating specificationA document describing:

— coating types, material and manufacturer’s technical datasheets comprising requirements to surface preparation andapplication, and safety data sheets

— definition of coating system, including number of coatsand minimum and maximum variation in dry film thick-ness

— surface preparation, including preparation of edges andwelds, surface cleanliness standard (e.g. blast cleaning toSa 2.5 as defined by ISO 8501-1) and roughness

— maximum allowable air humidity in relation to air andsteel temperatures during surface preparation and coatingapplication

— control and inspection procedures, including acceptancecriteria, tests (e.g. surface cleanliness, film thickness andtemperature control) and handling of deviations fromspecified quality

— allocation scheme, describing what type of coating to beapplied where, including colours.

2.12.5 M060 – Cathodic protection specification, calcula-tion and drawingsA document describing:

— areas to be protected, main structures and attached metal-lic components (m2)

— stipulated protective current density demand (mA/m2) forcoated and not coated surfaces respectively, and total cur-rent demand (A) in initial condition and at the end of thedesign life, based on a recognised standard

— target design life of cathodic protection system— anode material and manufacturer— drawings of cathodic protection systems, showing anode

types, mass, distribution, location and attachment detailsfor sacrificial or impressed current anodes

— cathodic protection system drawings shall be in compli-ance with the specification and calculations for the same.

Sacrificial anodes

— calculation of anode mass, distribution, total number, re-sistance and current capacity in initial and final condition.

— target protective potential to be obtained in initial condi-tion and at the end of the design life

Impressed current systems

— current capacity of rectifiers and anodes.

— reference electrodes, system control and monitoring ar-rangement, cabling, and procedures for exchange or re-newal of components.

2.12.6 M070 – Welding procedures


— reference to materials— preparation— preheating — method and control of welding— post-weld heat treatment— necessary equipment to be used.

2.12.7 M080 – List of combustible mterials

A list of materials providing:

— material identification— fire related properties (M030)— locations— quantities.

2.13 Discipline N – Navigation

2.13.1 N020 – Bridge design drawing

A drawing of the bridge design showing the position of navi-gational equipment, horizontal and vertical fields of visionfrom the conning position, blind sectors caused by obstructionsoutside the wheelhouse within the required field of vision, anddetails such as configuration of bridge wings and height offront bulwark with windscreens.

2.13.2 N030 – Field of vision drawing

A drawing showing the vertical (in ballast condition) and hor-izontal field of vision seen from the traffic surveillance work-stations. Blind sectors caused by divisions between windowsand obstructions outside the wheelhouse, e.g. cranes shall beshown shaded.

2.14 Discipline O – Operation

2.14.1 O020 – Unit operation manual

A document containing limiting operating conditions and es-sentials related to classification. The document shall includethe following information:

Operating instructions

Instructions for operation, including precautions to be taken inadverse weather, changing mode of operations, any inherentlimitations of operations, etc.

Operation limitations

Pertinent data for each approved mode of operation, includingfunctional and variable loads, environmental conditions, foun-dation characteristics (for sea bed support units only), draft,etc.

Any limitations on the operation of the unit or the equipment,e.g. cranes, drilling equipment, etc.

Stability

Information shall be included as required under discipline B.

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Ballasting system

Documentation for the ballast system and instructions for bal-lasting and deballasting in intact and damaged conditions.

Position mooring

Limiting operating conditions and corresponding proceduresas basis for the class notation POSMOOR.

Dynamic positioning

Limiting operating conditions and corresponding proceduresas basis for the class notation DYNPOS.

2.15 Discipline P – Process

2.15.1 P020 – Flow diagram

A diagrammatic drawing including the following:

— flow summary tables for all major process streams, includ-ing heat and mass balances

— all major control loops— all major equipment— pressure and temperature in major streams and equipment— duty of drivers and heat exchangers— tag numbers of equipment.

2.15.2 P030 – Sizing calculations

Sizing calculations for e.g. relief valves, bursting disks and re-striction orifices.

2.15.3 P040 – Temperature calculations

Calculations of minimum temperatures in systems where lowtemperatures may occur. The calculations shall document cor-rect choice of piping and valve materials.

2.15.4 P050 – Materials selection report


Fluid corrosivity evaluation

Based on design data, the potential corrosivity of all fluids as-sociated with production or processing of oil and/or gas shallbe assessed.

Special measures for control and monitoring of internal corro-sion and erosion

This may include e.g. use of internal coatings or linings, chem-ical treatment, corrosion probes and fluid analyses.

External corrosion protection

Use of paint coatings shall be specified by reference to generictype, thickness (total and individual layers) and surface prepa-ration.

2.15.5 P060 – Flare heat radiation study

An analysis covering

— flare capacity for dimensioning scenario— flare tip characteristics— methodology used in the analysis— heat radiation calculations— heat radiation plots.

2.15.6 P070 – Safety analysis tables

Safety analysis tables of process systems according to APIRP14C.

2.15.7 P080 – Pressure vessel integrity study

An analysis of the integrity of the pressure vessels during fireand simultaneous depressuring.

2.15.8 P090 – Flare and blowdown system reportAn analysis comprising calculations of capacity requirements,back pressure, equipment sizing, depressurising profile, lowtemperature effects, liquid entrainment, etc.

2.16 Discipline Q – Quality management

2.16.1 Q020 – Quality manualA document stating the quality policy and describing the qual-ity system of an organisation.

2.16.2 Q030 – Process control procedureA procedure defining the manner of production, installationand servicing.

2.16.3 Q040 – Document control procedureProcedure that describes how documents are prepared, re-ceived, numbered, identified, distributed, filed and discarded.

2.16.4 Q050 – Construction scheduleA work programme listing the activities required in the con-struction process, defining the time and duration for each ac-tivity and their inter-dependability. Important milestones shallbe listed.

2.16.5 Q060 – Document registerA register containing the document number and title for alldocuments that are planned to be issued during a project.

The document register should be a living register also contain-ing information on planned and real issue dates and revisioncontrol.

2.17 Discipline S – Piping

2.17.1 S020 – System diagram (P&ID)A diagrammatic drawing including the following:

— equipment and components including reference identifica-tion (tag numbers)

— size of pressure vessels and piping— piping with line numbers— pump type and capacity— type of valves and connections— type of expansion elements— location of shutdown and isolation valves— failure mode of control and shutdown and isolation valves— hydrostatic test pressure after installation on board, where

required— instrumentation, including safety devices, control and

monitoring equipment— signal lines, sufficient to describe the function— heat-tracing cables and insulation for pipelines, valves, in-

struments, vessels, etc.— maximum differential pressure across centrifugal pumps— maximum flow through pumps and compressors— set points for all shutdown and isolation valves and rup-

ture disks.

2.17.2 S030 – Pressure drop analysisA calculation of the pressure drop in the system during dimen-sional operation. A comparison of the results with acceptablelimits for the pressure drop.

2.17.3 S040 – Capacity analysisA calculation of the capacity of the system. A comparison ofthe results with corresponding capacity requirements.

2.17.4 S050 – Hydraulic or pneumatic control diagramA schematic diagram showing hydraulic or pneumatic controllines and associated components as actuators, valves and sim-

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ilar. The operational mode that is shown , e.g. normal operationwith pressure applied, shall be stated. The failure mode of thecomponents, e.g. close on loss of power, shall be stated.

2.17.5 S060 – Connections to the shell and to sea chestsDrawings showing the arrangement of the connections of pip-ing and associated equipment to the shell and to sea chests. Thedrawing shall make it possible to assess that the connectionsand the associated equipment meet the requirements to struc-tural strength and the requirements of the ILLC 1966.

2.17.6 S070 – Pipe routing sketchA sketch showing the physical routing of the piping. The pur-pose of the sketch is to provide an overview of the installedpiping, not detailed isometrics.

2.17.7 S080 – Pipe stress analysisA calculation of stresses in the pipes and their supports due tofor example expansion, water hammering and surge. An as-sessment of the pipes and their supports’ adequacy with re-spect to structural strength and fatigue.

2.17.8 S090 – Thermal stress analysisA calculation of stresses in the pipes and their supports due tothermal effects. An assessment of the pipes and their supports’adequacy with respect to structural strength and fatigue.

2.17.9 S100 – Specification of piping, valves, flanges and fittingsA document describing for each system:

— type of pipe or component— pipe or component design standard— dimensions (for pipes, outside diameter and wall thick-

ness)— design pressure— design temperature— materials— corrosion protection— test pressure— piping class (I, II, III).

2.17.10 S110 – Line indexThe line index may contain the following information:

— line number (tag code) — P&ID document number — stress isometric number — fabrication and inspection isometrics — service from tag code — service to tag code — test class — test medium — test pressure (barg) — heat tracing oC — insulation class— corrosion allowance, critical line — non-destructive testing class, calculation number — stress calculation number — nominal size— density vapour or liquid — viscosity vapour or liquid — liquid fraction — calculation method— fluid — mass flow — compressibility — velocity— pressure drop calculated and allowed — operating pressure — design pressure — operating temperature

— minimum and maximum design temperatures — design temperatures — piping class (I, II, III).

2.18 Discipline T – Telecommunications

2.18.1 T020 – Communication system functional descrip-tionA document describing:

— all functions incorporated in the system— all interfaces towards other systems, including the infor-

mation carriers’ characteristics— system hardware.

For systems that are not computer based:

— one-line diagrams.

For computer based systems:

A description of the basic software installed per hardware unit,comprising:

— a list of all main software modules installed per hardwareunit stating names and version numbers

— a description of the communication software installed onnodes in a network

— descriptions of application software (not program listings)as follows:

— cross reference between the functions and the soft-ware modules that must be operative to maintain eachfunction

— each module with detail level sufficient to understandits function

— data and control flow between software modules— configuration of the software, including priority

schemes— switching mechanisms for redundant systems— tools for system set-up and process equipment config-

uration— plan for software manufacturing.

2.18.2 T030 – Communication system block diagramA drawing showing the major inter-relationships between allparts of the system and interfaces with other systems.

2.18.3 T040 – Communication system user interfaceA drawing showing:

— the physical layout and dimensions of the control device— description of the functions allocated each keyboard or

screen— description of individual screen views, e.g. schematics,

colour prints— description of how menus, etc. are operated— list of all alarms and operator messages

Where the alarms or messages are not self-explanatory, addi-tional explanations shall be included.

2.18.4 T050 – Communication system power supply arrangementA drawing showing the electrical power supply from main andback-up source. The drawing shall show the connection to dis-tribution boards, batteries, converters or UPS, cable type andcross sectional area and fuse sizes.

2.18.5 T060 – Communication system cable routing sketchA sketch showing the physical routing of all cables being a partof the system. The information shall be presented as a principalsketch, not as detailed drawings for all cable routings.

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The sketch shall also show how the requirements to ensureelectromagnetic compatibility (EMC) are implemented withrespect to cable shielding, separation and routing.

2.18.6 T070 – Communication system data sheets with environmental specifications

Data sheets showing for each key component conformancewith the requirements for environmental conditions.

2.19 Discipline U – Subsea No special standard documentation types are defined for thesubsea discipline.

2.20 Discipline V – Heat, ventilation and air condi-tioning

2.20.1 V020 – System diagram (D&ID)

A diagrammatic drawing including:

— equipment and components including reference identifica-tion (tag numbers)

— ductwork with duct numbers, size and insulation— fan type and capacity— type of dampers— instrumentation, including safety devices, control and

monitoring equipment— signal lines, sufficient to describe the function— connections to other systems e.g. sea water, heating medi-

um, drain, etc.

2.20.2 V030 – Pressure drop analysis

A calculation of the pressure drop in the system during dimen-sional operation. A comparison of the results with acceptablelimits for the pressure drop.

2.20.3 V040 – Capacity calculation

A calculation of the capacity of the system. A comparison ofthe results with corresponding capacity requirements.

2.20.4 V050 – Hydraulic or pneumatic control diagram

A schematic diagram showing hydraulic or pneumatic controllines and associated components as actuators, valves and sim-ilar. The operational mode that is shown must be stated, e.g.normal operation, with pressure applied. The failure mode forthe components must be stated, e.g. close on loss of power.

2.20.5 V060 – Duct routing sketch

A sketch showing the physical routing of the ducts. The pur-pose of the sketch shall provide an overview of the installedducts, not detailed isometrics.

2.20.6 V070 – Penetration drawings

A drawing including material specifications showing typicalarrangements of penetrations for ventilation ducting, pipes orcables through fire divisions.

2.20.7 V080 – Flow diagram

A diagrammatic drawing including the following:

— reference identification (tag numbers) for supply and ex-tract fans

— flowrates for supply and extract fans— temperature requirements for all serviced areas.

2.21 Discipline W – Soil and foundation

2.21.1 W020 – Typical soil conditions

A document describing the range of typical soil conditions forwhich the unit is intended for. The type of soil and the range ofshear strength and stiffness parameters shall be included.

If the unit is intended for a specific location, a soil investiga-tion report (W030) shall be submitted instead.

2.21.2 W030 – Soil investigation report

A report providing a description of the soil investigations per-formed on a specific location. An interpretation of the resultsof the investigation towards soil design parameters, such asgeneral classification parameters, shear strength parameters,deformation properties and other parameters for the foundationtype and design.

2.21.3 W040 – Pile foundation design


— soil resistance models for axial and lateral resistance— total axial capacity— pile response to acting loads, accounting for interaction ef-

fects with unit— pile installation studies including pile driveability analy-

ses.

2.21.4 W050 – Gravity foundation design


— stability of foundation— settlements and displacements— penetration of skirts— soil reactions on foundation structure— soil modelling for dynamic analysis— filling of voids (under base grouting).

2.21.5 W060 – Anchor foundation design


Pile anchors

Position and orientation of padeye, installation performance,tolerances to verticality, holding capacity (axially and lateral-ly) and required pretension for pull-in of anchor line in soil.

Gravity anchors

See gravity foundation design (W050)

Suction anchors

Position and orientation of padeye, installation performance,i.e. required suction, tolerances to verticality, holding capacity(axially and laterally) and required pretension for pull-in of an-chor line in soil.

Fluke anchors

Holding capacity, required installation pretension load and es-timated installation drag length.

Drag-in plate anchors

Holding capacity, required installation pretension load and es-timated installation drag length.

Other types of plate anchors

Installation procedures, anchor performance during installa-tion and holding capacity.

2.22 Discipline Y – Pipeline No special standard documentation types are defined for thepipeline discipline.

2.23 Multidiscipline Z

2.23.1 Z020 – General arrangement plan

A drawing showing the unit’s main dimensions, frame spac-ings and layout. For each deck, all rooms and all major equip-ment shall be identified. Side and front views shall beincluded.

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2.23.2 Z030 – Local arrangement plan

A drawing showing the main dimensions and layout of a lim-ited area, e.g. the engine room. All rooms and major equipmentshall be identified by room number or tag number and name.Side views shall be included. The global location of the areashown on the drawing shall be indicated on a miniature generalarrangement plan.

2.23.3 Z040 – System arrangement plan

A drawing showing the physical layout of a system, e.g. theballast system. All major equipment being part of the systemshall be identified by tag number and name.

2.23.4 Z050 – Unit specification

The specification of the unit being referred to by the contractbetween the owner and the builder.

2.23.5 Z060 – System design philosophy

A document stating:

Design basis

Rules, regulations, standards and codes with assigned priori-ties.

System and interfaces

— a description of all functions that are assigned to the sys-tem, and all interfaces to other systems

— requirements to the system in order to maintain an accept-able level of safety

— dangerous operations and requirements to correspondingmanual actions

— requirements to maintenance— life cycle related aspects.

Dangerous events

A description of the safety functions incorporated in the sys-tem that shall prevent or limit the consequences of dangerousevents.

Shut down

— description of shut down philosophy— assessment of the safest status for the system and associat-

ed equipment in case of failures in the shut down systemsoperating on the system

— consequences for electrical, pneumatic and hydraulic cir-cuits, i.e. selection of normally energised versus normallydeenergised circuits.

2.23.6 Z070 – System functional description


— all functions incorporated in the system and their technicalrealisation

— all interfaces towards other systems, including their tech-nical realisation.

2.23.7 Z080 – Failure mode description

A document describing the effects due to failures in the sys-tems, not failures in the equipment supported by the systems.The following aspects shall be covered:

— list of failures which are subject to assessment, with refer-ences to the system documentation

— description of the system response to each of the abovefailures

— comment to the consequence of each of these failures.

2.23.8 Z090 – Reliability and availability analysis

A document providing a qualitative, and a quantitative analysisof the reliability and availability of the system. The qualitative

analysis may be the result a hazard and operability study(HAZOP).

2.23.9 Z100 – Equipment listA list stating for each key component :

— system— name of manufacturer— type, etc., necessary to identify the component— main characteristics, e.g. pressure rating and power con-

sumption— cross reference identification (tag number) to system dia-

grams as P&IDs (S020) and D&IDs (V020)— reference to type approval certificate— reference to Ex certificate.

2.23.10 Z110 – SpecificationA document describing the design basis and technical specifi-cation for a product.

2.23.11 Z120 – Data sheetA schematic document providing quantified technical parame-ters for a product, e.g. pressure rating, together with other spe-cific attributes, e.g. Ex classification..

2.23.12 Z130 – Test procedure at manufacturerA document describing all tests that shall be carried out at themanufacturer's works together with acceptance criteria foreach test. The tests shall cover all functions covered by the sys-tem and all normal failure modes.

2.23.13 Z140 – Report from test at manufacturerA document describing all results, and limitations to the testsperformed.

2.23.14 Z150 – Test procedure for quay or sea trialA description of all tests that shall be carried out at the quay orsea trial together with acceptance criteria for each test.

2.23.15 Z160 – Report from quay or sea trialA document describing all results, and limitations to the testsperformed.

2.23.16 Z170 – Operation manualA document intended for regular use on board, providing in-formation on:

— operation modes— operating instructions for normal and degraded operating

modes— details of the user interface— transfer of control— redundancy— test facilities— failure detection and identification facilities, automatic

and manual— data security— access restrictions— special areas requiring user attention— procedures for start-up— procedures for restoration of functions— procedures for data back-up— procedures for software re-load and system regeneration.

2.23.17 Z180 – Installation manualA document providing information about the installation pro-cedures.

2.23.18 Z190 – Maintenance manualA document intended for regular use on board providing infor-mation on:

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— maintenance and periodical testing— acceptance criteria— fault identification and repair— list of the suppliers' service net.

2.23.19 Z200 – List of signboardsA list of all signboards to be installed, including the corre-sponding signboard texts. A reference to the applied rules, reg-ulations, standards or codes.

2.23.20 Z210 – Environmental regularity number (ERN) calculationA calculation of the environmental regularity number accord-ing to Rules for Classification of Ships Pt.6 Ch.7 Sec.6.

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