David Galbraith Convenor ISO TC 67/SC 7/WG 3 Project Leader ISO & ISO Fixed Steel Offshore Structures / Topsides Structures

Transcription

1 International Standards and the status of the offshore structures codes David Galbraith Convenor ISO TC 67/SC 7/WG 3 Project Leader ISO & ISO Fixed Steel Offshore Structures / Topsides Structures

2 ISO presentation Oil and Gas industry International Standards Offshore Structures ISOs What they are Status and description of each UK Organisations International implementation plans Benefits of implementation What needs to be done Internet resources Ptil / David Galbraith 1/2

3 ISO/TC67 Strategic Policy Statement Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries Mission: To Create Value-added Standards for the Oil and Natural Gas Industry Vision: Global Standards Used Locally Worldwide Goals: Prepare standards required by industry Prepare standards that can be adopted worldwide by bodies such as API and CEN Publish standards that enable companies to minimise their specifications Deliver standards to the target dates on the agreed work programme Ptil / David Galbraith 1/3

4 Oil and Gas Industry Published standards By end standards published Ptil / David Galbraith 1/4

5 Worldwide Participation in ISO/TC 67 Oil/Gas Companies 337 Vendors/ Suppliers 259 Others 218 includes Certifying Bodies, Legislators, National Standards Bodies, Academics etc. Estimated total of >800 people participating in ISO/TC67 Ptil / David Galbraith 1/5

6 Standardisation Bodies - Relationships International ISO / IEC Vienna Agreement Regional CEN / CENELEC National ANSI Japan etc. Other European Industry API ASME Ptil OLF Ptil / David Galbraith 1/6

7 Three Reasons For European Standards 1 ENs will replace all National Standards in Europe 2 Some ENs will satisfy Essential Requirements of New Approach European Directives 3 Requirement arising from the European Public Procurement Utilities Directive Ptil / David Galbraith 1/7

8 ISO/TC 67 Organisation EC = Executive Committee MC = Management Committee ISO/TC67 EC/MC Materials, Equipment and Offshore Structures for Petroleum and Natural Gas Industries: Drilling, Production, Refining and Transport by Pipelines WG 2 WG 4 Conformity Assessment Principles Data Collection SC 1 SC 2 SC 3 SC 4 SC 5 SC 6 SC 7 WG 5 WG 7 WG 8 Aluminium Drill Pipe Corrosion Resistant Materials Linepipe Materials, Corrosion Control, Welding & Joining and NDE Pipelines Drilling Fluids & Well Cements Drilling/Prod n Equipment Casing, Tubing & Drillpipe Processing Equip./Systems Offshore Structures WG 9 Life Cycle Costing Ptil / David Galbraith 1/8

9 ISO/TC 67/SC 7 OFFSHORE STRUCTURES 6 Working Groups WG1 General Requirements USA WG2 Regional Annexes Netherlands WG3 Fixed Steel Structures USA WG4 Fixed Concrete Structures Norway WG5 Floating Systems (incl. TLPs) USA WG6 Weight Engineering Norway WG7 Site Specific Assessment of MOUs - Jack-Ups UK WG8 Fixed Structures in Ice Environments Canada Future Work - Planned but not yet scheduled Site-specific assessment of Floating Mobile Offshore Units Ptil / David Galbraith 1/9

10 Offshore Structures International Standards All types of substructure ISO ISO General requirements for offshore structures Published 2002 Specific requirements for offshore structures ISO Metocean Published 2005 ISO Seismic Published 2004 ISO Topsides structure Draft International Standard (ISO 2008?) ISO Foundations Published 2003 ISO Weight Control Published 2003 ISO Marine Operations Draft International Standard (ISO 2008?) ISO Station keeping Published 2005 Ptil / David Galbraith 1/10

11 Offshore Structures International Standards Different Substructures ISO ISO ISO Fixed steel offshore structures Fixed concrete offshore structures Floating (ship shape) structures Publish 12/07 Published 2006 Published 2006 ISO TLPs Not started ISO ISO ISO Site-specific assessment of jackups (requirements) Site-specific assessment of jackups (commentary) Site-specific assessment of Semis ISO 2010? ISO TR 2010? Not started ISO Arctic structures ISO 2010? Ptil / David Galbraith 1/11

12 ISO terminology Why? To be precise To avoid ambiguity To be translatable into different languages Can: Describes something no under the control of the standard e.g. the wind can come from any direction Shall: A requirement of following the standard e.g. the requirements for the ultimate limit state shall be explicitly considered Should: A recommendation May: The standard is giving permission for a specific action e.g. Axial Froude-Krylov actions may be neglected Will: Signifies intent, future event or likelihood Ptil / David Galbraith 1/12

13 Loads versus actions ISO requirement to use action rather than load Loads are externally applied Actions include loads and also other effects that cause internal forces Thermal effects Settlements etc Ptil / David Galbraith 1/13

14 Published in December 2002 Reissue of ISO Full International Standard Project leader David Galbraith UK Canada for next revision High level requirements Basis for the other documents Sets the context for the other standards Will be reaffirmed this year Will be revised and republished thereafter Incorporation of exposure level concept Tidying up points raised in writing other standards Sets out limit states etc. Introduces concept of exposure levels 3 classes Detailed in ISO and elsewhere (may be moved) "Petroleum and natural gas industries General requirements for offshore structures" Ptil / David Galbraith 1/14

15 ISO Metocean design and operating considerations Full International Standard Project leader Chris Shaw, Shell, Netherlands Published 2005 Ptil / David Galbraith 1/15

16 ISO Metocean design and operating considerations Determination of metocean conditions in general Characterization and use of metocean conditions for design and operation a) extreme and abnormal metocean conditions b) long-term distributions of metocean conditions c) normal metocean 70 N 65 N 60 N conditions 55 N 50 N 0 m 200 m 500 m m m m 10 W 0 10 E 20 E 30 E Ptil / David Galbraith 1/16

17 Full International Standard ISO Seismic design procedures and criteria Project leader Hugh Banon, BP, US Was heading for a full reliability based standard, but has been pulled back Still probability based Uses exposure levels to determine appropriate return periods Two methods Simplified for lower criticality platforms (maps) Detailed for higher criticality Site-specific survey 5 % damped spectral response accelerations for 0,2 s oscillator periods Ptil / David Galbraith 1/17

18 Currently Draft international Standard Project leader David Galbraith - UK First offshore topsides structures code Uses national or regional standards British Standards International Standards Specific offshore topsides loading considerations Helidecks, Cranes, Flares etc Accidental actions text ISO expected late Topsides structure Ptil / David Galbraith 1/18

19 ISO Topsides structure What it is Design and guidance for topsides structure of fixed installations Design and guidance for structures of equipment installed on floating and mobile units (packaged equipment What it is not Design of structure essential to the integrity of floating & mobile units (not hulls or ship type superstructures) Design of any structure covered by class rules (e.g. helidecks on MOUs) Ptil / David Galbraith 1/19

20 ISO Topsides Structure Contents and philosophy Basis of design practice is local building code Addition information given for: Aligning partial factors with substructure code Accidental actions Especially fires and explosions Offshore specific features Flare structures Helidecks Bridges Materials limited guidance for non ferrous materials UK COMMENTS Meeting being organised to discuss any UK comments Ptil / David Galbraith 1/20

21 ISO Geotechnical and foundation design considerations Fully published Project Leader Toulan (UK) / Lacasse (NO) / Kolk (NL) Geoscience and foundation engineering applicable to different types of offshore structure site characterization, soil and rock characterization, Shallow foundation design Hazard identification Very close liaison with API task group Ptil / David Galbraith 1/21

22 ISO Weight control during engineering and construction Fully published Project leader - Eivind Warren - Norway Formalization of weight control procedures Ptil / David Galbraith 1/22

23 Marine operations Due late 2008 Project leader - Johan Wichers Netherlands Aspects of marine operations applicable to several types of structure Relates to ISO 19902, ISO 19903, ISO etc. Ptil / David Galbraith 1/23

24 ISO Fixed steel offshore structures The big one Project leader David Galbraith (UK) 650 pages Derived from API RP2A LRFD Wholesale revision of document Reorganized, Clarified Loopholes and ambiguities reduced Major technical developments Ptil / David Galbraith 1/24

25 ISO Fixed concrete offshore structures Fully published ISO 2006 Project leader Steiner Leivestad (NO) High level document Intended to be used with National Building code for concrete Can it be used in Europe? Sintra agreement (decommissioning) Ptil / David Galbraith 1/25

26 ISO Floating offshore structures Published 2006 Project Leader Bob Wolfram (US) Covers Ship-shaped Spars Intended to supplement class rules Industry s record for time and schedule of floaters is very poor ISO TLPs Will follow at later date No current action Ptil / David Galbraith 1/26

27 ISO Site-specific assessment of mobile offshore units Part 1: Jack-ups Part 2: Jack-ups commentary (Technical Report) Project Leader Mike Hoyle (UK) Current schedule 2010 Based on SNAME Supplements class rules Still a long way to go Emotive discussions failure rates Wave return periods Ptil / David Galbraith 1/27

28 19906 "Arctic offshore structures" ISO Scheduled for 2010 Project Leader Denis Blanchet (BP) Lots of research being undertaken Funded by oil companies with Arctic interests Much expertise in in Russia Funding issues for ISO development Ptil / David Galbraith 1/28

29 ISO TC67/SC7 Programme of Work Updated at SC7 Stavanger see also Document: ISO TC67/SC7 N 315 Rev Systematic Review ISO WG1 General Requirements WG1 being reconstituted NWIP in progress In progress ISO Metocean WG3 Revision in Progress - TBA Nov 08 ISO Seismic WG3 In progress ISO DIS FDIS ISO Topsides WG3 Jul Apr Aug ISO Foundations WG3 Aug 08 NWIP CD DIS FDIS ISO Marine Site Investigation WG3 Nov Sep Dec Apr ISO Weight EngineeringWG6 NWIP being prepared Jul 08 ISO DIS P-F FDIS ISO Marine operations WG9 Mar Oct Sept Jan ISO CD FDIS ISO Stationkeeping WG5 Mar Dec Dec 08 ISO FDIS ISO Fixed Steel WG3 Jun Dec Dec 10 ISO FDIS ISO Fixed Concrete WG4 Aug Dec Dec 09 ISO FDIS ISO Floating - MSS WG5 Jun Oct ISO Nov 09 Floating -TLP WG5 ISO CD DIS FDIS ISO WG7 MOUs - Jackups F Dec Feb Apr Aug ISO TR CD TR MOUs - Jackups WG7 Mar Feb ISO MOUs - Floating WG7 ISO ISO WG8 WD CD DIS FDIS Arctic offshore C Jul Nov Oct Dec Apr Paris Delft Calgary Beijing Italy TBA Stavanger = draft is within SC7 SC7 review required = doc. is publicly available = systematic review

30 Implementation plans Oil Majors rewriting technical requirements to require use of ISO standards Will take some time to be widely used US contractors still unsure about limit state design De-facto standards being revised API incorporating the ISO text Norsok withdrawing text covered by the ISOs Class rules still have a place under ISO Being adopted as Eurocodes E.g. BS EN ISO HSE Called up in ON27 + GASCET (HSE s guidance on assessment of safety case topics) will not require the use of ISO standards, though their use will represent evidence of good practice agreed by industry experts. As a result, HSE will give their use in design by the Dutyholder and their contractors considerable weight ISOs effectively have status of ACOP Ptil / David Galbraith 1/30

31 Updating API / ISO documents ISO 199XX- X:zzzz Text from published ISO US Regional Annex ISO 199XX-X:zzzz API WRAPPER API RP YY 3rd Ed. Modification needed for API Introduction API RP YY 4th Ed./ ISO 199XX- X:zzzz 1) API additional requirements 2) Modifications to US Regional Annex 3) Specific US regulatory environment New Edition of ISO doc. Ptil / David Galbraith 1/31

32 Implementation plans USA Documents published as, e.g. (ANSI)/API RP2A LRFD / ISO Ptil / David Galbraith 1/32

33 What needs to be done now? Software vendors Update to comply with ISO Some have started this activity Operators Specify use of ISO series in enquiries and orders Update their internal rules and standards Underway in some cases Designers and consultants Become familiar with ISO series Start using them ISO committees Compile experience and update if necessary Address action factors for different geographical areas and different exposure categories Ptil / David Galbraith 1/33

34 Acknowledgements OGP LIP Development of Offshore Structures International Standards BP Shell ExxonMobil Total UK HSE Statoil Hydro Marathon Funding a number of experts for their contribution to the creation of the ISO suite of International Standards Plus hundreds of industry experts around the world (but principally from Europe and North America) Ptil / David Galbraith 1/34

35 Internet resources Websites: TC67 SC7 information (maintained by me) API ISO page can get status of documents from here OGP status Norsok standards follow Petroleum Ptil / David Galbraith 1/35