phase 4 report - DNV

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RN02: DESIGN OF FLOATING STRUCTURES IN ICE // PART 1 IntroductionThe recommendations from the group to the Barents2020 Steering Committee included:• ISO 19906 shall be used as basis for design andoperations of stationary units in the Barents Sea.Note: Phase 3 was based on the ISO/DIS (DraftInternational Standard) dated 15-Jan-2009.• Internationally approved (directtranslations) ISO 19906 are to beimplemented as national standards• The Working Group identified ten topics, ofwhich four were prioritized, that should beamended in ISO/DIS 19906 (Draft InternationalStandard). A Guidance Document has beenidentified as the best way to address thesetopics. The Guidance Document should––Be prepared in close cooperationwith ISO WG8,––Pay due considerations to ongoing JointIndustry Projects (JIPs) and research projects.––Be ready in draft form by end 2010.• The guidance document should––Meet the immediate and futureneeds for the Barents Sea––Be a common Russian-Norwegian supplementto ISO 19906 until an update is available––Be submitted to ISO as a proposedinternational supplement to ISO 19906 at thefirst update• Of the ten topics, stationary floating structuresin ice should be given first priority. Several ofthe other identified topics can be put under theumbrella of stationary floating structures.1.2. Scope of Work and Work Process Phase 4ObjectiveThe objective for RN02 in Phase 4 was defined to be:• Develop a Guidance Document that mayserve as a common Russian-NorwegianSupplement to ISO19906 for use in the BarentsSea that fills identified gaps in ISO 19906with respect to ice loads against and theresponse of stationary floating structures. TheGuidance will be based on state-of-the-art.Based on the definition of stationary structures fromPhase 3, the term “stationary floating structure” isdefined as:• Floating unit kept in position by mooringsand/or dynamic positioning, e.g. ship-shapedvessels, spar and buoy shaped platforms.1.3. Expert Working GroupThe Russian experts were nominated by theRussian sponsors Gazprom, Rosneft and ShtokmanDevelopment Company AG (Sdag). The Westernexperts were nominated by the Western sponsors,who were Statoil, ENI, Total, and OGP in additionto the Norwegian Foreign Ministry and DNV.The project steering committee approved thenominations. The companies and institutions inthe groups represent leading organisations withinthe maritime and offshore petroleum industriesin Norway and Russia, and bring the requiredcompetence to the groups to assess the selected safetycritical topics.Furthermore, the Working Group identified a needto harmonise the understanding and interpretationof ISO 19906 amongst Russian and Norwegianparticipants.20RUSSIAN–NORWEGIAN COOPERATION PROJECT
RN02: DESIGN OF FLOATING STRUCTURES IN ICE // PART 1 IntroductionBarents 2020The participating experts were:Expert Group RN02NameOrganisationMarat Mansurov Gazprom - VNIIGAZ Russian CoordinatorIrina SurikovaRMRSMarina KarulinaKrylovNina A. KrupinaArctic and Antarctic Research InstitutePavel LiferovSDAGSergey KimVNIIGAZYury A. NemenkoGiprospetsgazSergey I. ChibakinGazprom Shelf ProductionVakhtang M. GlontiGazprom Shelf ProductionGleb ChurkinAgency of researches of industrial risksVladimir A. PestryaevSakhalinnipimorneftAlexander A. NikitenkoSakhalinnipimorneftArne GurtnerStatoilHans M SandMoss MaritimeRod AllanTransoceanJean-Marc CholleyTotalGraham ThomasBP/OGPMike OrrCairn/OGPGuido KuiperShell/OGPLars Ingolf Eide DNV Norw. Coordinator (until December 2010)Per Olav Moslet DNV Norw. Coordinator (from January 2011)Dmitry Onishschenko VNIIGAZ Invited guestRichard McKenna R.F McKenna Associates Invited guest to workshopMitch Winkler Shell/OGP Invited guestSjoerd Wille Shell/OGP Invited guest1.4. Work processDuring Phase 3 the Working Group had neitherthe time nor the resources to perform a detailed gapanalysis of the individual clauses in ISO/DIS 19906.For Phase 4 the Group was joined by other experts,including a representative from SDag, who weregaining extensive experience applying ISO 19906 toa specific development project (Shtokman), and OGPrepresentatives, who had been involved with thedevelopment of ISO 19906.At the first group meeting in Phase 4 (24-25August 2010), Statoil and SDag volunteered toproduce the detailed gap analysis that was lacking.OGP provided the final draft of ISO 19906 that hadbeen sent to ISO in August 2010 for issue as ISO/FDIS 19906 for final vote. Each clause in both thenormative and informative parts of this “ready-for-FDIS” version of ISO 19906 was scrutinized forshortcomings, with the objective of working groupRN02 in mind. With respect to floating structures,and despite improvements from the ISO/DIS version,75 clauses were identified to have shortcomings orpotential for improvements of which some were verysimilar and could be considered together, resulting in58 topics to be further investigated.The gap analysis was distributed to the group inearly November 2010 and at the second meeting(7-8 December 2010) group members signed up tocontribute to selected topics and clauses by providingthe following for each contribution:1. Background information on why the Clauseshould be amended and, if relevant, referenceto research or publications that substantiate therecommended additions or changes2. Recommended text for the amendmentThe first official version of ISO 19906:2010(E) waspublished on 14 December 2010, with no significantReport no 2012-0690 21
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RN07 // BibliographyBarents 20207.
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