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OFFSHORE STANDARDDNV-OS-F101Submarine Pipeline SystemsAUGUST 2012The electronic pdf version of this document found through http://www.dnv.com is the officially binding versionDET NORSKE VERITAS AS
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, andcarries out research in relation to these functions.DNV service documents consist of among others the following types of documents:— Service Specifications. Procedural 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 Det Norske Veritas AS August 2012Any comments may be sent by e-mail to rules@dnv.comThis service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this document, and is believed to reflect the best ofcontemporary technology. The use of this document by others than DNV is at the user's sole risk. DNV does not accept any liability or responsibility for loss or damages resulting fromany use of this document.
Offshore Standard DNV-OS-F101, August 2012Changes – Page 3CHANGESGeneralThis document supersedes DNV-OS-F101, October 2010.Text affected by the main changes in this edition is highlighted in red colour. However, if the changes involvea whole chapter, section or sub-section, normally only the title will be in red colour.Main Changes ————Sec.1 GeneralMinor editorial changes and updatesB: Reference list updatedIntroduction included. Previous A600 moved to B100C: Updated definitions. ———Sec.2 Safety PhilosophyMinor editorial changes and updatesClarification of acceptance target valuesB: The general requirements to a systematic review, B300, has been further implemented as a new A300in sections 3 to 11— C201: CO2 pipelines commented, recommended deviation from ISO. ———Sec.3 Concept and Design Premise DevelopmentRe-organised in a timeline mannerMinor editorial changes and updatesD200: Pressure protection system (including pressure safety system and pressure control system) has beenrenamed as pipeline control and pipeline safety system in line with IEC 61511. Sec.4 Design – Loads— Minor editorial changes and updates— C600: Weather restricted weather operations aligned with DNV-OS-H101. ———————Sec.5 Design – Limit State CriteriaMinor editorial changes and updatesD200: Pressure containment limit stated; influence of mill test and system test clarifiedD1300: Dent added as limit state (moved from trawling)E: Special considerations; levels of details are aligned between the different sub-sectionsE800: Requirements to earth quake extendedF: Component design updated reflecting revisions of ISO and further aligned with section 8F100: Advice for code breaks included. Sec.6 Design – Materials Engineering— Minor editorial changes and updates. ———Sec.7 Construction – LinepipeUpdated to reflect new ISO 3183 revisionGeneral update based on feed-back from industryG200: Criteria to dimensional tolerances clarified. ————Sec.8 Construction - Components and Pipeline AssembliesRe-structured to improve clarityB300 to 500: Updated to reflect new ISO 15590 revisionC500: Section on bolts updatedF: Section on pipeline assemblies partly re-written. Sec.9 Construction – Corrosion protection and Weight Coating— Re-written to align with ISO 21809 Sec.10 Construction - Offshore— Section heading changed to reflect contents— Completely re-structured and modified.DET NORSKE VERITAS AS
Offshore Standard DNV-OS-F101, August 2012Changes – Page 4 Sec.11 Operations and Abandonment— Updated to reflect alignment with DNV-RP-F116. Sec.12 Documentation— Minor changes App.A Fracture Limit State of Girth Welds— B107: Rules for how different load cases shall be combined have been included— D: Fracture toughness testing on SENT specimens also acceptable for bi-axial stress condition (operation)— D: New definition of Lr cut-off (plastic collapse) which will allow higher local stresses and strains in theligament with a flaw— E: Use of FE analysis amended— F: No safety factor on the calculated fatigue life. App.B Mechanical Testing and Corrosion Testing— General update based on feed-back from industry and clarifications. App.C Welding— General update based on feed-back from industry— More precise definitions added to make several of the requirements clearer— C300 and F300: Changes to requirement of weld filler metal yield strength. App.D Non-Destructive Testing (NDT)————Referenced standards updated. Withdrawn referenced standards replaced with new standardsAligned requirements for MT and PT with other international accepted standardsB200: References for computed radiography implementedB300: References to DNV Classification Note 7 implemented. App.E Automated Ultrasonic Girth Weld Testing— General update based on feed-back from industry and clarifications— DNV-RP-F118 implemented as reference for qualification of AUT systems— Requirements in DNV-OS-F101 is aligned with requirements in DNV-RP-F118. App.F Requirements for Shore Approach and Onshore Sections— Minor changes.AcknowledgementThe present revision of DNV-OS-F101 is mainly reflecting feed-back from experience by several companiesthat are hereby acknowledged.This revision includes a re-structuring of Section 10 “Offshore – construction” based on close valuablediscussions from Statoil, hereby acknowledged.A hearing version was issued December 2011. Close to 1000 very well founded comments were received ofwhich most were either accepted or partly accepted. Many of the comments not accepted were typicallyrequesting extension of the scope, e.g. parameter limitations, requiring further developments. Those commentshave been noted as leads and may results in future Joint Industry proposals.The comments improved the quality and content of this standard significantly and the effort spent by thecommenting companies is impressive and hereby acknowledged. The commenting companies were (inalphabetical order):AG der Dillinger HuttenwerkeAllseasBPChevron ETCEuropipeExxonMobilHeerema Marine ContractorsJDPJFE-steelMærskNippon SteelNordstreamPetrobrasReinertsenDET NORSKE VERITAS ASSaipemStatoilSubsea 7Tata SteelTechnipTotalWoodside
Offshore Standard DNV-OS-F101, August 2012Contents – Page 5CONTENTSSec. 1General . 17A.AAAAAGeneral . 17100 Introduction. 17200 Objectives . 17300 Scope and application . 17400 Alternative methods and procedures. 18500 Structure of standard . 18B.BBBBBBBReferences . 19100 Applicability . 19200 Offshore service specifications . 20300 Offshore standards . 20400 Recommended practices . 20500 Rules . 21600 Certification notes and classification notes. 21700 Other references . 21C.CCCDefinitions. 25100 Verbal forms . 25200 Definitions . 25300 Definitions (continued) . 29D.DDDDAbbreviations and Symbols . 33100 Abbreviations. 33200 Symbols – latin characters . 35300 Symbols – greek characters . 37400 Subscripts. 38Sec. 2Safety Philosophy . 39A. General . 39A 100 Objective . 39A 200 Application. 39B.BBBBBBSafety Philosophy Structure . 39100 General. 39200 Safety objective. 39300 Systematic review of risks . 40400 Design criteria principles . 41500 Quality assurance . 41600 Health, safety and environment . 41C.CCCCCRisk Basis for Design. 41100 General. 41200 Categorisation of fluids. 41300 Location classes . 42400 Safety classes . 42500 Reliability analysis. 43Sec. 3A.AAAConcept and Design Premise Development . 44General .
— DNV-RP-F118 implemented as reference for qualification of AUT systems — Requirements in DNV-OS-F101 is aligned with requirements in DNV-RP-F118. App.F Requirements for Shore Approach and Onshore Sections — Minor changes. Acknowledgement The present revision of DNV-OS-F101 is mainly reflecting feed-back from experience by several companies that are hereby acknowledged. This
