DNV OS-F101 - Submarine Pipeline Systems.pdf

OFFSHORE STANDARD DNV-OS-F101 Submarine Pipeline Systems OCTOBER 2013 The electronic pdf version of this document found through is the officially binding version DET NORSKE VERITAS AS FOREWORD DNV is a global provider of
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  OFFSHORE STANDARD D ET    N ORSKE   V ERITAS   AS The electronic pdf version of this document found through is the officially binding version DNV-OS-F101 Submarine Pipeline Systems OCTOBER 2013  © Det Norske Veritas AS October 2013Any comments may be sent by e-mail to This 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 of contemporary 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. FOREWORD DNV is a global provider of knowledge for managing risk. Today, safe and responsible business conduct is both a licenseto operate and a competitive advantage. Our core competence is to identify, assess, and advise on risk management. Fromour leading position in certification, classification, verification, and training, we develop and apply standards and best practices. This helps our customers safely and responsibly improve their business performance. DNV is an independentorganisation with dedicated risk professionals in more than 100 countries, with the purpose of safeguarding life, propertyand the environment.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 SystemsU)Unconventional Oil & Gas  D ET  N ORSKE  V ERITAS AS  Offshore Standard DNV-OS-F101, October 2013 CHANGES – CURRENT – Page 3 CHANGES – CURRENT General This document supersedes DNV-OS-F101, August 2012.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 ãGeneral  —Excessive conservatism related to fracture assessment of girth welds has been removed in Appendix Aleading to: —relaxation of weld repair requirements —increased installation speed. —Other changes: —reference list updated. —general update based upon feed-back from industry. ãSec.4 Design - Loads  —G407: Clarify effect of selecting larger positive tolerances. ãSec.5 Design – Limit State Criteria  —C402: Minimum wall thickness requirement re-worded to avoid misinterpretations. —E1100: Pipe-in-pipe and bundles moved from G200. —Equation 5.6 corrected —F107: Clarifications on code break. ãSec.7 Construction – Linepipe  —E104: Implications of reduction in mill test pressure clarified.  —I400: Table 7-26: Amended by adding t = 15 mm step for HFW pipes. ãSec.10 Construction – Offshore  —J307: Pressure test accuracy requirement modified. ãAppendix A Fracture Limit State of Girth Welds  —General clarifications based on comments from industry. —The terms 'defect', 'flaw' and 'notch' have been defined. —The Lr cut-off formula for strain based loading has been amended by adding limit. The Lr cut-off valueshall not exceed 1.5. —Table A-7 for assessment of surface breaking flaws has been amended. ãAppendix D Non-Destructive Testing (NDT)  —B212: Digital Radiography reference updated to ISO 17636-2.In addition to the above stated main changes, editorial corrections may have been made. Editorial Corrections  D ET  N ORSKE  V ERITAS AS  Offshore Standard DNV-OS-F101, October 2013 CHANGES – CURRENT – Page 4 Acknowledgement The present revision of DNV-OS-F101 is mainly reflecting feed-back from experience by several companiesthat are hereby acknowledged. 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):AllseasAtkinsBPButtingEuropipeJFEMcDermottNippon Steel & Sumitomo MetalRambøllStatoilSubsea7Tata SteelTechnipTotalThe Welding Institute (TWI)WelspunWood Group

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