DNV-OS-F101: Submarine Pipeline SystemsDET NORSKE VERITAS Offshore Standard DNV-OS-F101, October...

OFFSHORE STANDARD

DET NORSKE VERITAS

DNV-OS-F101

SUBMARINE PIPELINE SYSTEMS

OCTOBER 2010

FOREWORDDET NORSKE VERITAS (DNV) is an autonomous and independent foundation with the objectives of safeguarding life,property and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification andconsultancy services relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carriesout research in relation to these functions.

DNV service documents consist of amongst other the following types of documents:— Service Specifications. Procedual requirements.— Standards. Technical requirements.— Recommended Practices. Guidance.

The Standards and Recommended Practices are offered within the following areas:A) Qualification, Quality and Safety MethodologyB) Materials TechnologyC) StructuresD) SystemsE) Special FacilitiesF) Pipelines and RisersG) Asset OperationH) Marine OperationsJ) Cleaner EnergyO) Subsea Systems

The electronic pdf version of this document found through http://www.dnv.com is the officially binding version© Det Norske Veritas

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If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas, then Det Norske Veritas shall pay compensation to such personfor his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compen-sation shall never exceed USD 2 million.In this provision "Det Norske Veritas" shall mean the Foundation Det Norske Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of DetNorske Veritas.

Offshore Standard DNV-OS-F101, October 2010Changes – Page 3

AcknowledgementThe current revision of DNV-OS-F101 has been sponsored by three different Joint Industry Projects. The work has been performedby DNV and discussed in several workshops with individuals from the different companies. They are hereby all acknowledged fortheir valuable and constructive input. In case consensus has not been achievable DNV has sought to provide acceptable compromiseagreement.The two material related JIP's have in total been sponsored by:

The operation JIP has been sponsored by:

In addition, individuals from the following companies have been reviewers in the hearing process:

DNV is grateful for the valuable co-operations and discussions with the individual personnel in these companies.

CHANGES• General

As of October 2010 all DNV service documents are primarilypublished electronically.In order to ensure a practical transition from the “print” schemeto the “electronic” scheme, all documents having incorporatedamendments and corrections more recent than the date of thelatest printed issue, have been given the date October 2010.An overview of DNV service documents, their update statusand historical “amendments and corrections” may be foundthrough http://www.dnv.com/resources/rules_standards/.

• Main changesSince the previous edition (October 2007), this document hasbeen amended, most recently in October 2008. All changeshave been incorporated and a new date (October 2010) hasbeen given as explained under “General”.

BP MRM TechnipChevron NSC TenarisCorus PTT V&MEuropipe Saipem VectorFMC Sintef VetcoHydro Statoil WoodsideJFE Subsea7

ConocoPhillips Gassco ShellDONG Hydro StatoilENI

Acergy Hydro StatoilAllseas Inoxtech Sumitomo Corp., EuropeButting Intec Tenaris DalmineEuropipe JFE V & M DeutschlandGorgon Nippon Steel

DET NORSKE VERITAS

Offshore Standard DNV-OS-F101, October 2010 Page 4 – Changes

DET NORSKE VERITAS

Offshore Standard DNV-OS-F101, October 2010 Contents – Page 5

CONTENTS

Sec. 1 General................................................................. 13

A. General..................................................................................13A 100 Introduction..................................................................... 13A 200 Objectives ....................................................................... 13A 300 Scope and application ..................................................... 13A 400 Alternative methods and procedures............................... 14A 500 Structure of Standard ...................................................... 14A 600 Other codes ..................................................................... 14

B. References ............................................................................15B 100 Offshore Service Specifications...................................... 15B 200 Offshore Standards ......................................................... 15B 300 Recommended Practices ................................................. 15B 400 Rules ............................................................................... 15B 500 Certification notes and classification notes .................... 15B 600 Other references.............................................................. 15

C. Definitions ............................................................................18C 100 Verbal forms ................................................................... 18C 200 Definitions ...................................................................... 18C 300 Definitions (continuation)............................................... 21

D. Abbreviations and Symbols..................................................22D 100 Abbreviations.................................................................. 22D 200 Symbols .......................................................................... 24D 300 Greek characters ............................................................. 24D 400 Subscripts........................................................................ 25

Sec. 2 Safety Philosophy................................................ 26

A. General..................................................................................26A 100 Objective......................................................................... 26A 200 Application...................................................................... 26

B. Safety Philosophy Structure ................................................26B 100 General............................................................................ 26B 200 Safety objective............................................................... 26B 300 Systematic review of risks .............................................. 27B 400 Design criteria principles ................................................ 27B 500 Quality assurance............................................................ 27B 600 Health, safety and environment ...................................... 27

C. Risk Basis for Design ...........................................................27C 100 General............................................................................ 27C 200 Categorisation of fluids................................................... 27C 300 Location classes .............................................................. 28C 400 Safety classes .................................................................. 28C 500 Reliability analysis.......................................................... 28

Sec. 3 Concept Development and Design Premises .... 29

A. General..................................................................................29A 100 Objective......................................................................... 29A 200 Application...................................................................... 29A 300 Concept development ..................................................... 29

B. System Design Principles .....................................................29B 100 System integrity .............................................................. 29B 200 Monitoring/inspection during operation ......................... 29B 300 Pressure Protection System............................................. 30B 400 Hydraulic analyses and flow assurance .......................... 30

C. Pipeline Route.......................................................................31C 100 Location .......................................................................... 31C 200 Route survey ................................................................... 31C 300 Seabed properties............................................................ 32

D. Environmental Conditions.................................................... 32D 100 General............................................................................ 32D 200 Collection of environmental data.................................... 32D 300 Environmental data ......................................................... 32

E. External and Internal Pipe Condition ...................................33E 100 External operational conditions ...................................... 33E 200 Internal installation conditions........................................ 33E 300 Internal operational conditions ....................................... 33

Sec. 4 Design - Loads..................................................... 34

A. General..................................................................................34A 100 Objective......................................................................... 34A 200 Application ..................................................................... 34A 300 Load scenarios ................................................................ 34A 400 Load categories ............................................................... 34A 500 Design cases.................................................................... 34A 600 Load effect combination ................................................. 34

B. Functional Loads ..................................................................34B 100 General............................................................................ 34B 200 Internal Pressure loads.................................................... 34B 300 External Pressure loads................................................... 35

C. Environmental Loads............................................................35C 100 General............................................................................ 35C 200 Wind loads ...................................................................... 35C 300 Hydrodynamic loads....................................................... 35C 400 Ice loads .......................................................................... 36C 500 Earthquake ...................................................................... 36C 600 Characteristic environmental load effects ...................... 36

D. Construction Loads...............................................................38D 100 General............................................................................ 38

E. Interference Loads ................................................................38E 100 General............................................................................ 38

F. Accidental Loads ..................................................................38F 100 General............................................................................ 38

G. Design Load Effects .............................................................39G 100 Design cases.................................................................... 39G 200 Load combinations.......................................................... 39G 300 Load effect calculations.................................................. 40

Sec. 5 Design – Limit State Criteria ........................... 41

A. General..................................................................................41A 100 Objective......................................................................... 41A 200 Application ..................................................................... 41

B. System Design Principles .....................................................41B 100 Submarine pipeline system layout .................................. 41B 200 Mill pressure test and system pressure test..................... 42B 300 Operating requirements .................................................. 43

C. Design Format ......................................................................43C 100 General............................................................................ 43C 200 Design resistance ............................................................ 43C 300 Characteristic material properties ................................... 44C 400 Stress and strain calculations .......................................... 45

D. Limit States...........................................................................46D 100 General............................................................................ 46D 200 Pressure containment (bursting) ..................................... 46D 300 Local buckling - General ................................................ 46D 400 Local Buckling – External over pressure only

(System collapse)............................................................ 46D 500 Propagation buckling ..................................................... 47D 600 Local Buckling - Combined Loading Criteria ................ 47D 700 Global buckling ............................................................. 49D 800 Fatigue ............................................................................ 49D 900 Ovalisation...................................................................... 50D 1000 Accumulated deformation .............................................. 50D 1100 Fracture and supplementary requirement P .................... 50D 1200 Ultimate limit state – Accidental loads........................... 51

E. Special Considerations .........................................................51E 100 General............................................................................ 51E 200 Pipe soil interaction ........................................................ 51E 300 Spanning risers/pipelines ................................................ 52E 400 On bottom stability ......................................................... 52E 500 Trawling interference...................................................... 52E 600 Third party loads, dropped objects ................................. 53E 700 Thermal Insulation.......................................................... 53

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Offshore Standard DNV-OS-F101, October 2010 Page 6 – Contents

E 800 Settings from Plugs .........................................................53

F. Pipeline Components and Accessories ................................. 53F 100 General ............................................................................53F 200 Design of bends...............................................................54F 300 Design of insulating joints ..............................................54F 400 Design of pig traps ..........................................................54F 500 Design of valves..............................................................54F 600 Pipeline fittings ...............................................................55

G. Supporting Structure............................................................. 55G 100 General ............................................................................55G 200 Pipe-in-pipe and bundles.................................................55G 300 Riser supports..................................................................55G 400 J-tubes .............................................................................55G 500 Stability of gravel supports and gravel covers ................55

H. Installation and Repair.......................................................... 56H 100 General ............................................................................56H 200 Pipe straightness..............................................................56H 300 Coating ............................................................................56

Sec. 6 Design - Materials Engineering......................... 57

A. General.................................................................................. 57A 100 Objective .........................................................................57A 200 Application......................................................................57A 300 Documentation ................................................................57

B. Materials Selection for Linepipe and Pipeline Components............................................................ 57

B 100 General ............................................................................57B 200 Sour service.....................................................................57B 300 Corrosion resistant alloys (informative) .........................58B 400 Linepipe (informative) ....................................................58B 500 Pipeline components (informative) .................................59B 600 Bolts and nuts..................................................................59B 700 Welding consumables (informative) ...............................59

C. Materials Specification ......................................................... 59C 100 General ............................................................................59C 200 Linepipe specification .....................................................60C 300 Components specification ..............................................60C 400 Specification of bolts and nuts ........................................60C 500 Coating specification.......................................................60C 600 Galvanic anodes specification.........................................61

D. Corrosion Control ................................................................. 61D 100 General ............................................................................61D 200 Corrosion allowance .......................................................61D 300 Temporary corrosion protection......................................61D 400 External pipeline coatings (informative).........................62D 500 Cathodic Protection.........................................................62D 600 External corrosion control of risers

(informative) ...................................................................63D 700 Internal corrosion control (informative) .........................64

Sec. 7 Construction – Linepipe .................................... 66

A. General.................................................................................. 66A 100 Objective .........................................................................66A 200 Application......................................................................66A 300 Process of manufacture ...................................................66A 400 Supplementary requirements...........................................66A 500 Linepipe specification ....................................................66A 600 Manufacturing Procedure Specification and

qualification ....................................................................66

B. Carbon Manganese (C-Mn) Steel Linepipe.......................... 67B 100 General ............................................................................67B 200 Pipe designation .............................................................67B 300 Manufacturing .................................................................67B 400 Acceptance criteria..........................................................69B 500 Inspection ........................................................................72

C. Corrosion Resistant Alloy (CRA) Linepipe ......................... 75C 100 General ............................................................................75C 200 Pipe designation ..............................................................75C 300 Manufacture ....................................................................75C 400 Acceptance criteria..........................................................75C 500 Inspection ........................................................................76

D. Clad or Lined Steel Linepipe................................................77D 100 General ............................................................................77D 200 Pipe designation ..............................................................77D 300 Manufacturing Procedure Specification .........................77D 400 Manufacture ....................................................................78D 500 Acceptance criteria..........................................................78D 600 Inspection ........................................................................79

E. Hydrostatic Testing...............................................................80E 100 Mill pressure test .............................................................80

F. Non-destructive Testing........................................................80F 100 Visual inspection.............................................................80F 200 Non-destructive testing ...................................................80

G. Dimensions, Mass and Tolerances .......................................81G 100 General ............................................................................81G 200 Tolerances .......................................................................81G 300 Inspection ........................................................................82

H. Marking, Delivery Condition and Documentation ...............84H 100 Marking...........................................................................84H 200 Delivery condition...........................................................84H 300 Handling and storage .....................................................84H 400 Documentation, records and certification .......................84

I. Supplementary Requirements...............................................84I 100 Supplementary requirement, sour service (S) .................84I 200 Supplementary requirement, fracture arrest

properties (F)...................................................................85I 300 Supplementary requirement, linepipe for plastic

deformation (P) ...............................................................86I 400 Supplementary requirement, dimensions (D) .................87I 500 Supplementary requirement, high utilisation (U) ...........88

Sec. 8 Construction - Components and Assemblies ... 89

A. General..................................................................................89A 100 Objective .........................................................................89A 200 Application......................................................................89A 300 Quality assurance ............................................................89

B. Component Requirements ....................................................89B 100 General ............................................................................89B 200 Component specification.................................................89B 300 Induction bends – additional and modified

requirements to ISO 15590-1..........................................89B 400 Fittings, tees and wyes - additional requirements to

ISO 15590-2....................................................................90B 500 Flanges and flanged connections - additional

requirements to ISO 15590-3..........................................91B 600 Valves – Additional requirements to ISO 14723 ............92B 700 Mechanical connectors....................................................93B 800 CP Insulating joints.........................................................93B 900 Anchor flanges ................................................................94B 1000 Buckle- and fracture arrestors .........................................94B 1100 Pig traps...........................................................................94B 1200 Repair clamps and repair couplings ................................94

C. Materials for Components ....................................................94C 100 General ............................................................................94C 200 C-Mn and low alloy steel forgings and castings .............94C 300 Duplex stainless steel, forgings and castings ..................95C 400 Pipe and plate material ....................................................95C 500 Sour Service ....................................................................95

D. Manufacture..........................................................................95D 100 Manufacturing procedure specification (MPS) ..............95D 200 Forging ............................................................................95D 300 Casting ............................................................................95D 400 Hot forming.....................................................................96D 500 Heat treatment .................................................................96D 600 Welding...........................................................................96D 700 NDT ................................................................................96

E. Mechanical and Corrosion Testing of Hot Formed, Cast and Forged Components..............................................................96

E 100 General testing requirements ..........................................96E 200 Acceptance criteria for C-Mn and low alloy steels ........97E 300 Acceptance criteria for duplex stainless steels................98

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F. Fabrication of Risers, Expansion Loops, Pipe Strings for Reeling and Towing..............................................................98

F 100 General............................................................................ 98F 200 Materials for risers, expansion loops, pipe strings for

reeling and towing .......................................................... 98F 300 Fabrication procedures and planning.............................. 98F 400 Material receipt, identification and tracking................... 98F 500 Cutting, forming, assembly, welding and

heat treatment.................................................................. 98F 600 Hydrostatic testing .......................................................... 98F 700 NDT and visual examination .......................................... 99F 800 Dimensional verification................................................. 99F 900 Corrosion protection ....................................................... 99

G. Hydrostatic Testing...............................................................99G 100 Hydrostatic testing .......................................................... 99G 200 Alternative test pressures ................................................ 99

H. Documentation, Records, Certification and Marking ........ 100H 100 General.......................................................................... 100

Sec. 9 Construction - Corrosion Protection and Weight Coating.................................................. 101

A. General................................................................................101A 100 Objective....................................................................... 101A 200 Application.................................................................... 101

B. External Corrosion Protective Coatings .............................101B 100 General.......................................................................... 101B 200 Coating materials, surface preparation,

coating application and inspection/testing of coating... 101

C. Concrete Weight Coating ...................................................101C 100 General.......................................................................... 101C 200 Concrete materials and coating manufacture................ 102C 300 Inspection and testing ................................................... 102

D. Manufacture of Galvanic Anodes....................................... 102D 100 Anode manufacture....................................................... 102

E. Installation of Galvanic Anodes .........................................102E 100 Anode installation ......................................................... 102

Sec. 10 Construction - Installation ............................... 104

A. General................................................................................104A 100 Objective....................................................................... 104A 200 Application.................................................................... 104A 300 Failure Mode Effect Analysis (FMEA) and

Hazard and Operability (HAZOP) studies.................... 104A 400 Installation and testing specifications and drawings..... 104A 500 Installation manuals ...................................................... 104A 600 Quality assurance.......................................................... 104A 700 Welding......................................................................... 104A 800 Non-destructive testing and visual examination........... 105A 900 Production tests............................................................. 105

B. Pipeline Route, Survey and Preparation .............................105B 100 Pre-installation route survey ......................................... 105B 200 Seabed preparation........................................................ 106B 300 Pipeline and cable crossings ......................................... 106B 400 Preparations for shore approach ................................... 106

C. Marine Operations ..............................................................106C 100 General.......................................................................... 106C 200 Vessels .......................................................................... 106C 300 Anchoring systems, anchor patterns and anchor

positioning .................................................................... 106C 400 Positioning systems ...................................................... 107C 500 Dynamic positioning..................................................... 107C 600 Cranes and lifting equipment........................................ 107C 700 Anchor handling and tug management ......................... 107C 800 Contingency procedures ............................................... 107

D. Pipeline Installation ............................................................107D 100 General.......................................................................... 107D 200 Installation manual........................................................ 108D 300 Review and qualification of the installation manual,

essential variables and validity ..................................... 108D 400 Operating limit conditions ............................................ 109

D 500 Installation procedures.................................................. 109D 600 Contingency procedures ............................................... 109D 700 Layvessel arrangement, laying equipment and

instrumentation ............................................................. 109D 800 Requirements for installation........................................ 110

E. Additional Requirements for Pipeline Installation Methods Introducing Plastic Deformations .......................................111

E 100 General.......................................................................... 111E 200 Installation manual........................................................ 111E 300 Qualification of the installation manual ....................... 111E 400 Installation procedures.................................................. 111E 500 Requirements for installation........................................ 111

F. Pipeline Installation by Towing..........................................112F 100 General.......................................................................... 112F 200 Installation manual........................................................ 112F 300 Qualification of installation manual ............................. 112F 400 Operating limit conditions ............................................ 112F 500 Installation procedures.................................................. 112F 600 Contingency procedures ............................................... 112F 700 Arrangement, equipment and instrumentation ............. 112F 800 Pipestring tow and installation...................................... 112

G. Other Installation Methods .................................................112G 100 General.......................................................................... 112

H. Shore Pull............................................................................113H 100 General.......................................................................... 113H 200 Installation manual........................................................ 113H 300 Qualification of installation manual ............................. 113H 400 Operating limit conditions ............................................ 113H 500 Installation procedures.................................................. 113H 600 Contingency procedures ............................................... 113H 700 Arrangement, equipment and instrumentation ............. 113H 800 Requirements for installation........................................ 113

I. Tie-in Operations ................................................................113I 100 General.......................................................................... 113I 200 Installation manual........................................................ 113I 300 Qualification of installation manual ............................. 113I 400 Operating limit conditions ............................................ 113I 500 Tie-in procedures .......................................................... 113I 600 Contingency procedures ............................................... 114I 700 Tie-in operations above water ...................................... 114I 800 Tie-in operations below water ...................................... 114

J. As-Laid Survey...................................................................114J 100 General.......................................................................... 114J 200 Specification of as-laid survey...................................... 114J 300 As-laid survey............................................................... 114J 400 As-laid survey of corrosion protection systems............ 114

K. Span Rectification and Pipeline Protection ........................114K 100 General.......................................................................... 114K 200 Span rectification and protection specification............. 114K 300 Span rectification .......................................................... 115K 400 Trenching...................................................................... 115K 500 Post-installation gravel dumping .................................. 115K 600 Grout bags and concrete mattresses.............................. 115

L. Installation of Protective and Anchoring Structures...........116L 100 General.......................................................................... 116

M. Installation of Risers ...........................................................116M 100 General.......................................................................... 116M 200 Installation manual........................................................ 116M 300 Qualification of the installation manual ....................... 116M 400 Operating limit conditions ............................................ 116M 500 Contingency procedures ............................................... 116M 600 Requirements for installation........................................ 116

N. As-Built Survey ..................................................................116N 100 General.......................................................................... 116N 200 Specification of as-built survey .................................... 116N 300 As-built survey requirements........................................ 117N 400 Inspection of impressed current cathodic corrosion

protection system.......................................................... 117

O. Final Testing and Preparation for Operation ......................117O 100 General.......................................................................... 117

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O 200 Specification of final testing and preparation for operation........................................................................117

O 300 Procedures for final testing and preparation for operation........................................................................117

O 400 Cleaning and gauging....................................................117O 500 System pressure testing .................................................118O 600 De-watering and drying ................................................119O 700 Systems testing..............................................................119

P. Documentation.................................................................... 119P 100 General ..........................................................................119

Sec. 11 Operations and Abandonment ........................ 120

A. General................................................................................ 120A 100 Objective .......................................................................120A 200 Scope and application ...................................................120A 300 Responsibilities .............................................................120A 400 Authority and company requirements...........................120A 500 Safety philosophy..........................................................120

B. Commissioning................................................................... 120B 100 General ..........................................................................120B 200 Fluid filling ...................................................................120B 300 Operational verification ................................................120

C. Integrity Management System............................................ 120C 100 General ..........................................................................120C 200 Company policy ............................................................121C 300 Organisation and personnel...........................................121C 400 Condition evaluation and assessment methods .............121C 500 Planning and execution of activities .............................121C 600 Management of change .................................................121C 700 Operational controls and procedures.............................121C 800 Contingency plans.........................................................121C 900 Reporting and communication ......................................121C 1000 Audit and review...........................................................121C 1100 Information management ..............................................121

D. Integrity Management Process ........................................... 122D 100 General ..........................................................................122D 200 Evaluation of threats and condition ..............................122D 300 External inspection........................................................122D 400 In-line inspection...........................................................123D 500 Corrosion monitoring....................................................123D 600 Integrity assessment ......................................................124D 700 Mitigation, intervention and repairs..............................124

E. Re-qualification .................................................................. 125E 100 General ..........................................................................125E 200 Application....................................................................125E 300 Safety level....................................................................125E 400 System pressure test ......................................................125E 500 Deterioration .................................................................125E 600 Design criteria ...............................................................125

F. De-commissioning.............................................................. 126F 100 General ..........................................................................126

G. Abandonment...................................................................... 126G 100 General ..........................................................................126

Sec. 12 Documentation.................................................. 127

A. General................................................................................ 127A 100 Objective .......................................................................127

B. Design................................................................................. 127B 100 Structural .......................................................................127B 200 Linepipe and pipeline components

(including welding) .......................................................127B 300 Corrosion control systems and weight coating .............127B 400 Installation.....................................................................128B 500 Operation.......................................................................128B 600 DFI-Resumé ..................................................................128

C. Construction - Manufacturing and Fabrication .................. 128C 100 Linepipe and pipeline component .................................128C 200 Corrosion control system and weight coating ..............128C 300 DFI-resumé ...................................................................128

D. Construction - Installation and Pre-Commissioning...........128D 100 General ..........................................................................128D 200 DFI-Resumé..................................................................129

E. Operation - Commissioning................................................129E 100 General ..........................................................................129

F. Operation ............................................................................129F 100 General ..........................................................................129F 200 In-Service file................................................................129

G. Abandonment......................................................................129G 100 General ..........................................................................129

H. DFI Resumé ........................................................................129H 100 General ..........................................................................129H 200 DFI resumé content.......................................................129

I. Filing of Documentation.....................................................130I 100 General ..........................................................................130

Sec. 13 Commentary (Informative)............................. 131

A. General................................................................................131A 100 Objective .......................................................................131

B. Cross References ................................................................131

C. Design Philosophy ..............................................................132C 100 Safety Class discussion .................................................132C 200 Structural reliability analyses........................................132C 300 Characteristic values .....................................................133

D. Loads...................................................................................133D 100 Conversion of pressures ................................................133

E. Design Criteria....................................................................133E 100 General ..........................................................................133E 200 Condition load effect factors.........................................133E 300 Calculation of nominal thickness..................................133E 400 Pressure containment - equivalent format.....................134E 500 Pressure containment criterion, incidental pressure

less than 10% above the design pressure. .....................134E 600 HIPPS and similar systems ...........................................134E 700 Local buckling - Collapse .............................................135E 800 Buckle arrestor ..............................................................135E 900 Local buckling - Moment..............................................135E 1000 Local buckling - Girth weld factor................................135E 1100 Ovalisation ....................................................................135

F. API Material Grades ...........................................................136F 100 API material grades.......................................................136

G. Components and Assemblies..............................................136G 100 Riser Supports ...............................................................136G 200 J-tubes ...........................................................................136

H. Installation ..........................................................................136H 100 Safety class definition ...................................................136H 200 Coating ..........................................................................136H 300 Simplified laying criteria ..............................................137H 400 Reeling ..........................................................................137

I. References...........................................................................139

App. A Structural Integrity of Girth Welds in Offshore Pipelines............................................................ 140

A. General................................................................................140A 100 Objective .......................................................................140A 200 Introduction...................................................................140A 300 Application....................................................................140

B. Assessment Categories .......................................................141B 100 General ..........................................................................141

C. Generic ECA for Girth Welds Subject to Strains Less than 0.4% Assessed According to ECA Static – Low................143

C 100 General ..........................................................................143

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D. Generic ECA for Girth Welds Subjected to Strains Equal to or Larger than 0.4% but Less Than 2.25% Assessed According to ECA Static – High ........................................145

D 100 General.......................................................................... 145

E. Girth Welds under Strain-based Loading Assessed According to ECA Static - Full ..........................................148

E 100 General.......................................................................... 148E 200 Assessment methodology ............................................. 149

F. Girth Welds Assessed According to ECA Fatigue .................................................151

F 100 General.......................................................................... 151F 200 High-cycle fatigue......................................................... 152F 300 Low-cycle fatigue ......................................................... 152

G. Testing Requirements .........................................................152G 100 General.......................................................................... 152G 200 Straining and ageing ..................................................... 153

H. ECA Validation Testing .....................................................154H 100 General.......................................................................... 154

App. B Mechanical Testing and Corrosion Testing ... 156

A. Mechanical Testing and Chemical Analysis .....................156A 100 General.......................................................................... 156A 200 General requirements to selection and preparation of

samples and test pieces ................................................. 156A 300 Chemical analysis ......................................................... 156A 400 Tensile testing ............................................................... 156A 500 Charpy V-notch impact testing ..................................... 157A 600 Bend testing .................................................................. 157A 700 Flattening test................................................................ 158A 800 Drop weight tear test..................................................... 158A 900 Fracture toughness testing ............................................ 158A 1000 Specific tests for clad and lined linepipe ...................... 159A 1100 Metallographic examination and hardness testing........ 159A 1200 Straining and ageing ..................................................... 160A 1300 Testing of pin brazings and aluminothermic welds ...... 161

B. Corrosion Testing ...............................................................161B 100 General.......................................................................... 161B 200 Pitting corrosion test ..................................................... 161B 300 Hydrogen Induced Cracking test .................................. 161B 400 Sulphide Stress Cracking test ....................................... 161

App. C Welding.............................................................. 165

A. Application .........................................................................165A 100 General.......................................................................... 165A 200 Welding processes ........................................................ 165A 300 Definitions .................................................................... 165A 400 Quality assurance.......................................................... 165

B. Welding Equipment, Tools and Personnel .........................165B 100 Welding equipment and tools ....................................... 165B 200 Personnel....................................................................... 166B 300 Qualification and testing of welding personnel for

hyperbaric dry welding ................................................ 166

C. Welding Consumables........................................................166C 100 General.......................................................................... 166C 200 Chemical composition .................................................. 167C 300 Mechanical properties................................................... 167C 400 Batch testing of welding consumables for

pipeline girth welds....................................................... 167C 500 Shielding, backing and plasma gases............................ 168C 600 Handling and storage of welding consumables ............ 168

D. Welding Procedures............................................................168D 100 General.......................................................................... 168D 200 Previously qualified welding procedures...................... 168D 300 Preliminary welding procedure specification ............... 169D 400 Welding procedure qualification record ....................... 169D 500 Welding procedure specification .................................. 169D 600 Welding procedure specification for repair welding .... 169D 700 Contents of pWPS......................................................... 169D 800 Essential variables for welding procedures .................. 170

E. Qualification of Welding Procedures .................................172E 100 General.......................................................................... 172E 200 Repair welding procedures ........................................... 173E 300 Qualification of longitudinal and girth butt welds

welding procedures ...................................................... 173E 400 Qualification of welding procedures for

corrosion resistant overlay welding .............................. 175E 500 Qualification of procedures for Pin Brazing and

Aluminothermic welding of anode leads...................... 176E 600 Qualification of welding procedures

for temporary and permanent attachments and branch welding fittings to linepipe ........................ 176

E 700 Qualification of welding procedures for structural components ................................................................... 177

E 800 Qualification of welding procedures for hyperbaric dry welding ......................................................................... 177

F. Examination and Testing for Welding Procedure Qualification .......................................................................177

F 100 General.......................................................................... 177F 200 Visual examination and non-destructive testing

requirements ................................................................. 178F 300 Testing of butt welds .................................................... 178F 400 Testing of weld overlay ................................................ 179F 500 Testing of pin brazing and aluminothermic welds ...... 180F 600 Testing of welds for temporary and permanent

attachments and branch outlet fittings to linepipe ........ 180

G. Welding and PWHT Requirements ....................................180G 100 General.......................................................................... 180G 200 Production welding, general requirements ................... 180G 300 Repair welding, general requirements .......................... 181G 400 Post weld heat treatment............................................... 182G 500 Welding of pipeline girth welds ................................... 182G 600 Welding and PWHT of pipeline components ............... 183

H. Material and Process Specific Requirements .....................183H 100 Internally clad/lined carbon steel and

duplex stainless steel..................................................... 183H 200 13Cr martensitic stainless steel..................................... 184H 300 Pin brazing and aluminothermic welding ..................... 185

I. Hyperbaric Dry Welding ....................................................185I 100 General.......................................................................... 185I 200 Qualification and testing of welding personnel for

hyperbaric dry welding ................................................ 185I 300 Welding processes for hyperbaric dry welding ............ 186I 400 Welding consumables for hyperbaric dry welding....... 186I 500 Shielding and backing gases for hyperbaric

dry welding ................................................................... 186I 600 Welding equipment and systems for hyperbaric dry

welding ......................................................................... 186I 700 Welding procedures for hyperbaric dry welding .......... 186I 800 Qualification welding for hyperbaric dry welding ....... 187I 900 Qualification of welding procedures for

hyperbaric dry welding ................................................. 187I 1000 Examination and testing ............................................... 187I 1100 Production welding requirements for dry hyperbaric

welding ......................................................................... 187

App. D Non-Destructive Testing (NDT) ...................... 188

A. General................................................................................188A 100 Objective....................................................................... 188A 200 Applicability of requirements ....................................... 188A 300 Quality assurance.......................................................... 188A 400 Non-destructive testing methods .................................. 188A 500 Personnel qualifications................................................ 188A 600 Timing of NDT............................................................. 189

B. Manual Non-Destructive Testing and Visual Examination of Welds.............................................189

B 100 General.......................................................................... 189B 200 Radiographic testing of welds ...................................... 189B 300 Manual ultrasonic testing of welds in C-Mn/low alloy steel

with C-Mn/low alloy steel weld deposits ..................... 190B 400 Manual ultrasonic testing of welds with CRA

(duplex, other stainless steels and nickel alloy steel) weld deposits ................................... 193

B 500 Manual magnetic particle testing of welds ................... 194

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B 600 Manual liquid penetrant testing of welds ......................195B 700 Manual eddy current testing of welds ...........................195B 800 Visual examination of welds.........................................196B 900 Acceptance criteria for manual non-destructive testing

of welds with nominal strains < 0.4% and no ECA......196B 1000 ECA based non-destructive testing acceptance criteria

for pipeline girth welds .................................................196B 1100 Repair of welds .............................................................199

C. Manual Non-destructive testing and Visual Examination of Plate, Pipe and Weld Overlay............................................. 199

C 100 General ..........................................................................199C 200 Plate and pipe ................................................................200C 300 Weld overlay .................................................................200C 400 Visual examination ......................................................201C 500 Residual magnetism ......................................................201C 600 Acceptance criteria for manual non-destructive

testing of plate, pipe and weld overlay .........................201

D. Non-destructive Testing and Visual Examination of Forgings .............................................................................. 202

D 100 General ..........................................................................202D 200 Ultrasonic and magnetic particle testing of C-Mn and

low alloy steel forgings .................................................202D 300 Ultrasonic and liquid penetrant testing of

duplex stainless steel forgings.......................................203D 400 Visual examination of forgings.....................................204D 500 Acceptance criteria for forgings....................................204

E. Non-destructive Testing and Visual Examination of Castings .............................................................................. 204

E 100 General ..........................................................................204E 200 Ultrasonic and magnetic particle testing of

C-Mn and low alloy steel castings ................................204E 300 Ultrasonic and liquid penetrant testing of

duplex stainless steel castings .......................................205E 400 Radiographic testing of castings ...................................206E 500 Visual examination of castings .....................................206E 600 Acceptance criteria for castings ....................................206

F. Automated Non-Destructive Testing.................................. 206F 100 General ..........................................................................206F 200 Documentation of function and operation ....................207F 300 Documentation of performance ....................................207F 400 Qualification..................................................................207F 500 Evaluation of performance documentation ...................207

G. Non-Destructive Testing at Plate and Coil Mill ................. 207G 100 General ..........................................................................207G 200 Ultrasonic testing of C-Mn steel and CRA plates.........207G 300 Ultrasonic testing of CRA clad C-Mn steel plate ........208G 400 Alternative test methods................................................208G 500 Disposition of plate and coil with unacceptable

laminations or inclusions ..............................................208G 600 Visual examination of plate and coil.............................208G 700 Acceptance criteria and disposition of surface

imperfections.................................................................208

H. Non-Destructive Testing of Linepipe at Pipe Mills............ 208H 100 General ..........................................................................208H 200 Suspect pipe ..................................................................209H 300 Repair of suspect pipe ...................................................210H 400 General requirements for automated NDT systems ......210H 500 Visual examination and residual magnetism ................212H 600 Non-destructive testing of pipe ends not tested by

automated NDT equipment ...........................................213H 700 Non-destructive testing of pipe ends.............................213H 800 Non-destructive testing of seamless pipe......................214H 900 Non-destructive testing of HFW pipe ...........................214H 1000 Non-destructive testing of CRA liner pipe ...................215H 1100 Non-destructive testing of lined pipe ............................215H 1200 Non-destructive testing of clad pipe .............................216H 1300 Non-destructive testing of SAWL and SAWH pipe .....217H 1400 Manual NDT at pipe mills ............................................219H 1500 Non-destructive testing of weld repair in pipe .............221

App. E Automated Ultrasonic Girth Weld Testing.... 222

A. General................................................................................ 222A 100 Scope.............................................................................222

A 200 References.....................................................................222

B. Basic Requirements ............................................................222B 100 General ..........................................................................222B 200 Documentation ..............................................................223B 300 Qualification..................................................................223B 400 Ultrasonic system equipment and components.............223B 500 Calibration (reference) blocks.......................................224B 600 Recorder set-up .............................................................225B 700 Circumferential scanning velocity ................................225B 800 Power supply.................................................................225B 900 Software ........................................................................225B 1000 Reference line, band position and coating cut-back .....225B 1100 Reference line tools.......................................................225B 1200 Operators.......................................................................225B 1300 Spares ............................................................................225B 1400 Slave monitors...............................................................225

C. Procedure ............................................................................226C 100 General ..........................................................................226

D. Calibration (Sensitivity Setting) .........................................226D 100 Initial static calibration..................................................226D 200 Gate settings..................................................................226D 300 Recording Threshold.....................................................227D 400 Dynamic calibration......................................................227D 500 Recording of set-up data ...............................................227

E. Field Inspection ..................................................................227E 100 Inspection requirements ................................................227E 200 Operational checks........................................................228E 300 Adjustments of the AUT system...................................229

F. Re-examination of Welds ...................................................229F 100 General ..........................................................................229

G. Evaluation and Reporting ...................................................229G 100 Evaluation of indications ..............................................229G 200 Examination reports ......................................................229G 300 Inspection records .........................................................229

H. Qualification .......................................................................229H 100 General ..........................................................................229H 200 Scope.............................................................................229H 300 Requirements ................................................................229H 400 Variables .......................................................................230H 500 Qualification programme ..............................................230H 600 Test welds .....................................................................230H 700 Qualification testing .....................................................230H 800 Reference destructive testing ........................................231H 900 Analysis.........................................................................232H 1000 Reporting.......................................................................232

I. Validity of Qualification.....................................................232I 100 Validity..........................................................................232I 200 Essential variables.........................................................232

J. Determination of Wave Velocities in Pipe Steels...............232J 100 General ..........................................................................232J 200 Equipment .....................................................................232J 300 Specimens .....................................................................233J 400 Test method...................................................................233J 500 Accuracy .......................................................................233J 600 Recording ......................................................................233

App. F Requirements for Shore Approach and Onshore Sections...................................................... 234

A. Application .........................................................................234A 100 Objective .......................................................................234A 200 Scope and limitation......................................................234A 300 Other codes ..................................................................234A 400 Definitions.....................................................................234

B. Safety Philosophy ...............................................................235B 100 General ..........................................................................235B 200 Safety philosophy..........................................................235B 300 Quantification of consequence .....................................235

C. Design Premise ...................................................................236C 100 General ..........................................................................236

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C 200 Routing ......................................................................... 236C 300 Environmental data ....................................................... 236C 400 Survey ........................................................................... 236C 500 Marking......................................................................... 237

D. Design................................................................................. 237D 100 General.......................................................................... 237D 200 System design ............................................................... 237D 300 Design loads.................................................................. 237D 400 Design criteria............................................................... 237

E. Construction........................................................................238E 100 General.......................................................................... 238E 200 Linepipe ........................................................................ 238E 300 Components and assemblies ......................................... 238E 400 Corrosion protection & coatings................................... 238

F. Operation ............................................................................238F 100 General.......................................................................... 238

G. Documentation....................................................................238G 100 General.......................................................................... 238

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Offshore Standard DNV-OS-F101, October 2010 Sec.1 – Page 13

SECTION 1GENERAL

A. GeneralA 100 Introduction101 This standard gives criteria and guidance on conceptdevelopment, design, construction, operation and abandon-ment of Submarine Pipeline Systems.

A 200 Objectives201 The objectives of this standard are to:

— Ensure that the concept development, design, construc-tion, operation and abandonment of pipeline systems aresafe and conducted with due regard to public safety and

the protection of the environment. — provide an internationally acceptable standard of safety

for submarine pipeline systems by defining minimumrequirements for concept development, design, construc-tion, operation and abandonment

— serve as a technical reference document in contractualmatters between Purchaser and Contractor

— serve as a guideline for Designers, Purchaser, and Con-tractors.

A 300 Scope and application301 The scope and applicability of this standard is given inTable 1-1.

1) Example of extra ordinary consequences may be pristine environmentand exploration in arctic climate.

2) Umbilicals intended for control of subsea installations are not included inthis standard. Individual pipes, within an umbilical, made of materials

Table 1-1 Scope and application summaryGeneral

Systems in the petroleum and natural gas industries are in general described in this table. For submarine pipeline systems that have extraordinary consequences, the quantification of con-sequences by the three safety classes provided in this standard may be insufficient, and higher safety classes may be required.1

Phases Concept development, design, construction, operation and abandonmentPipeline Types Dynamic risers and compliant risers are covered by DNV-OS-F201 Dynamic Risers.

Rigid metallic pipeSingle systems, pipeline bundles of the piggyback type and pipeline bundles within an outer pipe2

ExtentPressure and flow Pipeline system in such a way that the fluid transportation and pressure in the submarine pipeline

system is well defined and controlled 3Concept development, design, construction, operation and abandonment

Submarine pipeline system 4

Geometry and configurationDimensions No limitation

(Explicit criteria for local buckling, combined loading are only given for straight pipes with 15 < D/t2 < 45)

Water depth No limitation, see Sec.5 A201Loads

Pressure No limitationTemperature No limitation

Material properties need to be documented for temperatures above 50oC and 20oC for C-Mn steels and CRAs respectively, see Sec.5 C300

Global deformations No limitationLinepipe Material

General Sec.7 A201 C-Mn steel linepipe is generally conforming to ISO 3183 Annex J but with modifications and amendments.CRA linepipe with specific requirements to duplex stainless steel and 13Cr martensitic steelClad and Lined linepipe.Supplementary requirements for sour service, fracture arrest properties, plastic deformation, dimensional tolerances and high utilization.

Components Bends, Fittings, Flanges, Valves, Mechanical connectors, CP Insulating joints, Anchor flange, Buckle arrestor, Pig traps, Clamps and Couplings

Material and manufacture Sec.8Design Sec.5 F

FluidsCategories Table 2-1Sour service Generally conforming to ISO 15156

InstallationSec.10

Method S-lay, J-lay, towing and laying methods introducing plastic deformationsInstallation requirements for risers as well as protective and anchoring structures are also included.

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Offshore Standard DNV-OS-F101, October 2010 Page 14 – Sec.1

applicable to this standard, may be designed according to this standard.3) Different parts of the pipeline system may be designed to different codes.

It is important to identify differences between these at an early stage andassess these. Examples of conflicting requirements are; pressure defini-tions and system test pressure requirements.

4) The owner may apply this standard on sub-sets of the limits of this stand-ard. Typical example of excluded items is smaller diameter piping suchas kicker lines and designs these to e.g. ISO 15649.

A 400 Alternative methods and procedures401 In case alternative methods and procedures to thosespecified in this Standard are used, it shall be demonstratedthat the obtained safety level is equivalent to the one specifiedherein, see Sec.2 C500.

A 500 Structure of Standard501 This Standard is based on limit state design. This impliesthat the same design criteria apply to both construction/instal-lation and operation. All structural criteria are therefore givenin Sec.5.502 The Standard is organised as follows:

— Sec.1 contains the objectives and scope of the standard. Itfurther introduces essential concepts, definitions andabbreviations.

— Sec.2 contains the fundamental safety philosophy anddesign principles. It introduces the safety class methodol-ogy and normal classification of safety classes.

— Sec.3 contains requirements to concept development,establishment of design premises, with system designprinciples, pressure protection system, and collection ofenvironmental data.

— Sec.4 defines the design loads to be applied in Sec.5. Itincludes classification of loads into functional loads(including pressure), environmental loads, interferenceloads and accidental loads. Finally, it defines design caseswith associated characteristic values and combinations.

— Sec.5 contains requirements to pipeline layout, system testand mill test. It contains description of the design (LRFD)format and characterisation of material strength forstraight pipes and supports. Design criteria for the differ-ent limit states for all phases; installation, as-laid, commis-sioning and operation, are given.

— Sec.6 contains materials engineering and includes materialselection, material specification (including required sup-plementary requirement to the linepipe specification),welding and corrosion control.

— Sec.7 contains requirements to linepipe. The requirementsto C-Mn steels are based on ISO 3183. The section alsoincludes requirements to CRAs and lined/clad pipe.

— Sec.8 contains requirements to materials, manufacture andfabrication of components and assemblies. Structuralrequirements to these components are given in Sec.5 F.

— Sec.9 contains requirements to corrosion protection andweight coating.

— Sec.10 contains requirements to installation including pre-and post-intervention and pre-commissioning.

— Sec.11 contains requirements to operation including com-missioning, integrity management, repair, re-qualifica-tion, de-commissioning and abandonment of thesubmarine pipeline system.

— Sec.12 contains requirements to documentation for thesubmarine pipeline system from concept development toabandonment.

— Sec.13 is an informative section which discusses severalaspects of the standard.

— The appendices are a compulsory part of the standard.— Appendix A contains the requirements to engineering crit-

ical assessment (ECA). It includes methodology, materialcharacterisation and testing requirements.

— Appendix B details the requirements to materials testingincluding mechanical and corrosion testing as well aschemical analysis.

— Appendix C contains requirements to welding includingqualification of welding procedures and constructionwelding.

— Appendix D contains requirements to Non-DestructiveTesting (NDT) except Automated Ultrasonic Testing(AUT) of girth welds.

— Appendix E contains requirements to AUT of girth welds.— Appendix F contains selected requirements to onshore

parts of the submarine pipeline system.

503 Cross references are made as:

— nnn within the same sub-section (e.g. 512)— X or Xnnn to another sub-section within the same section

(e.g. C, C500 or C512)— Section m, Section mX or Section mXnnn to section, sub-

section or paragraph outside the current section (e.g.Sec.5, Sec.5 C, Sec.5 C500 or Sec.5 C512).

Where m and nnn denotes numbers and X letter.504 Additional requirements or modified requirements com-pared to ISO 3183 are denoted by AR or MR by the end of theparagraph, see Sec.7 B102.

A 600 Other codes601 In case of conflict between requirements of this code anda referenced DNV Offshore Code, the requirements of thecode with the latest revision date shall prevail.

Guidance note:DNV Offshore code means any DNV Offshore Service Specifi-cation, DNV Offshore Standard, DNV Offshore RecommendedPractice, DNV Guideline or DNV Classification Note. Any conflict is intended to be removed in next revision of thatdocument.

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602 Where reference is made to codes other than DNV doc-uments, the valid revision shall be taken as the revision whichwas current at the date of issue of this standard, unless other-wise noted.603 In case of conflict between requirements of this code andcode other than a DNV document, the requirements of thiscode shall prevail.604 This standard is intended to comply with the ISO stand-ard 13623: Petroleum and natural gas industries - Pipelinetransportation systems, specifying functional requirements foroffshore pipelines and risers.

Guidance note:The following major deviations to the ISO standard are known:- This standard allows higher utilisation for fluid category A

and C pipelines. This standard is here in compliance withISO16708.

- For design life less than 33 years, a more severe environmen-tal load is specified, in agreement with ISO16708.

- applying the supplementary requirements U, for increasedutilisation, this standard allows 4% higher pressure contain-ment utilisation than the ISO standard.

- the equivalent stress criterion in the ISO standard sometimesallows higher utilisation than this standard.

- requirements to system pressure test (pressure test).- minor differences may appear depending on how the pipeline

has been defined in safety classes, the ISO standard does notuse the concept of safety classes.

This standard requires that the manufacture of line pipe and con-struction is performed to this standard.

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605 The requirements to C-Mn steel linepipe of this standardinclude amendments and modifications that are additional toISO 3183.

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Offshore Standard DNV-OS-F101, October 2010 Sec.1 – Page 15

B. ReferencesB 100 Offshore Service SpecificationsThe latest revision of the following documents applies:

B 200 Offshore StandardsThe following documents contain provisions which, throughreference in this text, constitute provisions of this OffshoreStandard. The latest revision of the following documentapplies.

B 300 Recommended PracticesThe latest revision of the following documents applies:

B 400 RulesThe latest revision of the following documents applies:

B 500 Certification notes and classification notesThe latest revision of the following documents applies:

B 600 Other references

DNV-OSS-301 Certification and Verification of PipelinesDNV-OSS-302 Certification and verification of Dynamic

RisersDNV-OSS-401 Technology Qualification Management

DNV-OS-A101 Safety Principles And Arrangements DNV-OS-C101 Design of Offshore Steel Structures, Gen-

eral (LRFD method)DNV-OS-C501 Composite ComponentsDNV-OS-E201 Oil And Gas Processing Systems DNV-OS-F201 Dynamic Risers

DNV-RP-A203 Qualification Procedures for New Technol-ogy

DNV-RP-B401 Cathodic Protection DesignDNV-RP-C203 Fatigue Strength Analysis of Offshore Steel

StructuresDNV-RP-C205 Environmental Conditions and

Environmental LoadsDNV-RP-F101 Corroded PipelinesDNV-RP-F102 Pipeline Field Joint Coating & Field Repair

of Linepipe CoatingDNV-RP-F103 Cathodic Protection of Submarine Pipelines

by Galvanic AnodesDNV-RP-F105 Free Spanning PipelinesDNV-RP-F106 Factory applied pipeline coatings for corro-

sion controlDNV-RP-F107 Risk Assessment of Pipeline ProtectionDNV-RP-F108 Fracture Control for Pipeline Installation

Methods Introducing Cyclic Plastic StrainDNV-RP-F109 On-bottom Stability Design of Submarine

PipelinesDNV-RP-F110 Global Buckling of Submarine Pipelines -

Structural Design due to High Temperature/High Pressure

DNV-RP-F111 Interference between Trawl Gear and Pipe-lines

DNV-RP-F112 Design of Duplex Stainless Steel Subsea Equipment Exposed to Cathodic Protection

DNV-RP-F113 Pipeline Subsea RepairDNV-RP-F204 Riser FatigueDNV-RP-H101 Risk Management in Marine and Subsea

OperationsDNV-RP-H102 Marine Operations during Removal of Off-

shore InstallationsDNV-RP-O501 Erosive Wear in Piping Systems - Summary

DNV Rules for Certification of Flexible Risers and Pipes

DNV Rules for Classification of High Speed, Light Craft and Naval Surface Craft

DNV Rules for Planning and Execution of Marine Operations

DNV Rules for Classification of Fixed Offshore Installations

DNV CN 1.2 Conformity Certification Services, Type Approval

DNV CN 1.5 Conformity Certification Services, Approval of Manufacturers, Metallic Mate-rials

DNV CN 7 Non Destructive TestingDNV CN 30.4 FoundationsDNV CN 30.6 Structural Reliability Analysis of Marine

Structures

API RP5L1 Recommended Practice for Railroad transportation of Line Pipe

API5LW Recommended Practice for Transpor-tation of Line Pipe on Barges and Marine Vessels

API RP 2201 Safe Hot Tapping Practices in the Petroleum & Petrochemical Indus-tries-Fifth Edition

ASME/ANSI B16.9 Factory-Made Wrought Buttwelding Fittings

ASME B31.3 2004 Process PipingASME B31.4 2006 Pipeline Transportation Systems

for Liquid Hydrocarbons and Other Liquids

ASME B31.8 2003 Gas Transmission and Distribu-tion Systems

ASME BPVC-V BPBV Section V - Non-destructive Examination

ASME BPVC-VIII-1 BPVC Section VIII - Div. 1 - Rules for Construction of Pressure Vessels

ASME BPVC-VIII-2 BPVC Section VIII - Div. 2 - Rules for Construction of Pressure Vessels - Alternative Rules

ASNT Central Certification Program (ACCP).

ASTM D 695 Standard Test Method for Compres-sive Properties of Rigid Plastics

ASTM A370 Standard Test Methods and Defini-tions for Mechanical Testing of Steel Products

ASTM A388 Specification for Ultrasonic Examina-tion of Heavy Steel Forgings

ASTM A578/578M Standard Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications

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Offshore Standard DNV-OS-F101, October 2010 Page 16 – Sec.1

ASTM A577/577M Standard specification for Ultrasonic Angle-Beam Examination of Steel Plates

ASTM A609 Standard Practice for Castings, Low Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof

ASTM A 961 Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

ASTM E165 Standard Test method for Liquid Pen-etrant Inspection

ASTM E280 Standard Reference Radiographs for Heavy-Walled (4 1/2 to 12-in. (114 to 305-mm)) Steel Castings

ASTM E309 Standard Practice for Eddy-Current Examination of Steel Tubular prod-ucts Using Magnetic Saturation

ASTM E 317-94 Standard Practice for Evaluating Per-formance Characteristics of Pulse Echo Testing Systems Without the Use of Electronic Measurement Instruments

ASTM E426 Standard Practice for Electromagnetic (Eddy Current) of Welded and Seam-less Tubular Products, Austenitic Stainless Steel and Similar Alloys

ASTM E 709 Standard Guide for Magnetic Particle Examination

ASTM E797 Standard Practice for Measuring Thickness by Manual Ultrasonic Pulse-Echo Contact Method

ASTM E 1212 Standard Practice for Quality Manage-ment Systems for Non-destructive Testing Agencies

ASTM E 1417 Standard Practice for Liquid Penetrant Examination

ASTM E1444 Standard Practice for Magnetic Parti-cle Examination

ASTM G 48 Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

API 6FA Specification for Fire Test for Valves-Third Edition; Errata 12/18/2006

API RP 2201 Safe Hot Tapping Practices in the Petroleum & Petrochemical Indus-tries-Fifth Edition

AWS C5.3 Recommended Practices for Air Car-bon Arc Gouging and Cutting

BSI BS 7910 Guide to methods for assessing the acceptability of flaws in metallic struc

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