OFFSHORE STANDARD DNV-OS-F101 SUBMARINE PIPELINE SYSTEMS OCTOBER 2010 DET NORSKE VERITAS FOREWORD DET 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 and consultancy services relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carries out 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 Methodology B) Materials Technology C) Structures D) Systems E) Special Facilities F) Pipelines and Risers G) Asset Operation H) Marine Operations J) Cleaner Energy O) Subsea Systems The electronic pdf version of this document found through http://www.dnv.com is the officially binding version © Det Norske Veritas Any comments may be sent by e-mail to [email protected] For subscription orders or information about subscription terms, please use [email protected] Computer Typesetting (Adobe Frame Maker) by Det Norske Veritas 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 person for 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 Det Norske Veritas. Offshore Standard DNV-OS-F101, October 2010 Changes – Page 3 Acknowledgement The current revision of DNV-OS-F101 has been sponsored by three different Joint Industry Projects. The work has been performed by DNV and discussed in several workshops with individuals from the different companies. They are hereby all acknowledged for their valuable and constructive input. In case consensus has not been achievable DNV has sought to provide acceptable compromise agreement. The two material related JIP's have in total been sponsored by: BP MRM Technip Chevron NSC Tenaris Corus PTT V&M Europipe Saipem Vector FMC Sintef Vetco Hydro Statoil Woodside JFE Subsea7 The operation JIP has been sponsored by: ConocoPhillips Gassco Shell DONG Hydro Statoil ENI In addition, individuals from the following companies have been reviewers in the hearing process: Acergy Hydro Statoil Allseas Inoxtech Sumitomo Corp., Europe Butting Intec Tenaris Dalmine Europipe JFE V & M Deutschland Gorgon Nippon Steel DNV is grateful for the valuable co-operations and discussions with the individual personnel in these companies. CHANGES •General • Main changes As of October 2010 all DNV service documents are primarily Since the previous edition (October 2007), this document has published electronically. been amended, most recently in October 2008. All changes have been incorporated and a new date (October 2010) has In order to ensure a practical transition from the “print” scheme been given as explained under “General”. to the “electronic” scheme, all documents having incorporated amendments and corrections more recent than the date of the latest printed issue, have been given the date October 2010. An overview of DNV service documents, their update status and historical “amendments and corrections” may be found through http://www.dnv.com/resources/rules_standards/. 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 Sec. 4 Design - Loads..................................................... 34 A. General..................................................................................13 A. General..................................................................................34 A 100 Introduction.....................................................................13 A 100 Objective......................................................................... 34 A 200 Objectives .......................................................................13 A 200 Application ..................................................................... 34 A 300 Scope and application .....................................................13 A 300 Load scenarios ................................................................ 34 A 400 Alternative methods and procedures...............................14 A 400 Load categories............................................................... 34 A 500 Structure of Standard ......................................................14 A 500 Design cases.................................................................... 34 A 600 Other codes .....................................................................14 A 600 Load effect combination................................................. 34 B. References ............................................................................15 B. Functional Loads ..................................................................34 B 100 Offshore Service Specifications......................................15 B 100 General............................................................................ 34 B 200 Offshore Standards .........................................................15 B 200 Internal Pressure loads.................................................... 34 B 300 Recommended Practices.................................................15 B 300 External Pressure loads................................................... 35 B 400 Rules ...............................................................................15 B 500 Certification notes and classification notes ....................15 C. Environmental Loads............................................................35 B 600 Other references..............................................................15 C 100 General............................................................................ 35 C 200 Wind loads...................................................................... 35 C. Definitions ............................................................................18 C 300 Hydrodynamic loads....................................................... 35 C 100 Verbal forms ...................................................................18 C 400 Ice loads.......................................................................... 36 C 200 Definitions ......................................................................18 C 500 Earthquake ...................................................................... 36 C 300 Definitions (continuation)...............................................21 C 600 Characteristic environmental load effects ...................... 36 D. Abbreviations and Symbols..................................................22 D. Construction Loads...............................................................38 D 100 Abbreviations..................................................................22 D 100 General............................................................................ 38 D 200 Symbols ..........................................................................24 D 300 Greek characters .............................................................24 E. Interference Loads ................................................................38 D 400 Subscripts........................................................................25 E 100 General............................................................................ 38 Sec. 2 Safety Philosophy................................................ 26 F. Accidental Loads ..................................................................38 F 100 General............................................................................ 38 A. General..................................................................................26 A 100 Objective.........................................................................26 G. Design Load Effects .............................................................39 A 200 Application......................................................................26 G 100 Design cases.................................................................... 39 G 200 Load combinations.......................................................... 39 B. Safety Philosophy Structure ................................................26 G 300 Load effect calculations.................................................. 40 B 100 General............................................................................26 B 200 Safety objective...............................................................26 Sec. 5 Design – Limit State Criteria ........................... 41 B 300 Systematic review of risks ..............................................27 B 400 Design criteria principles................................................27 A. General..................................................................................41 B 500 Quality assurance............................................................27