An IOGP initiative, funded by JIP35, following the successful IOGP JIP33

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January 2022
Offshore Structures
Specifications Task
Force – JIP35

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Standardization of Offshore Structures Specifications
Offshore Structures Specification Task Force (Formed in 2017):
• IOGP initiative funded by JIP35 for standardization of offshore structures design
specifications following successful IOGP JIP33 initiative.
• Objective: Selection of an agreed base standard; using the contributing operators’
specifications as input, identify and agree minimum, essential common
requirements, documenting these in jointly approved supplementary specifications,
published by IOGP.
• 11 contributing operators: bp, Chevron, Eni, Equinor, ExxonMobil, Inpex, Petronas,
Shell, Suncor, TotalEnergies and Woodside.
• Leadership: Chairs - Simen Moxnes, Equinor (Ph.1 & 2) and Andre van der Stap,
Shell ( Ph.3).Vice Chair – Philip Smedley, bp ( Ph.1,2 & 3)
• 11 Teams in Phase 1 & 2 publishing 11 supplementary specifications (overlays).
• 3 Teams in Phase 3 currently progressing 3 supplementary specifications (overlays).

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Topic (IOGP Supplementary Spec) Selected Base Standard
General Requirements (S-631-01) ISO 19900
Metocean (S-631-09) ISO 19901-1 (API 2MET is a modified adoption)
Seismic (S-631-08) ISO 19901-2 (API RP 2EQ is a modified adoption)
Topsides (S-631-04) ISO 19901-3: 2014 (API RP 2TOP is near equivalent)
Foundations (S-631-05) ISO 19901-4 (API 2GEO is a modified adoption)
Weight Management (S-631-06) ISO 19901-5
Stationkeeping (S-631-07) ISO 19901-7 (API RP 2SK is near equivalent)
Marine Soil Invest. (S-631-10) ISO 19901-8
Fixed Jacket (S-631-11) ISO 19902 (API RP 2A (LRFD) is a modified adoption)
Concrete (S-631-03) ISO 19903
Arctic (S-631-02) ISO 19906 (API RP 2N is a modified adoption)
Floating Structures (S-631-13) Phase 3 Scope – under development
Structural Materials ( S-631-12) Phase 3 Scope – under development
Marine Operations ( S-631-13) Phase 3 Scope – under development
Selected Base Standards

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Topic (IOGP Supplementary Specification)
Total Company
Requirements
Minimum Essential
Requirements
General Reqs (S-631-01) – Published 44 5
Concrete (S-631-03) – Published 216 43
Seismic (S-631-08) – Published 255 5
Arctic (S-631-02) – Published 170 0
Marine Soil Invest. (S-631-10) – Published 883 90
Stationkeeping (S-631-07) – Published 1111 53
Topsides (S-631-04) – Published 1936 60
Fixed Jacket (S-631-11) – Published 1931 86
Consolidation and Reduction of Company Requirements

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Freely Available on IOGP website – www.iogp.org/jip35
Publications: Supplementary Specifications

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Topic Status
Weight Management (S-631-06)
Published *
Worked directly through ISO TC 67/SC 7/WG 6
Metocean (S-631-09) Worked directly through ISO TC 67/SC 7/WG 3.
Foundations (S-631-05) Worked directly through ISO TC 67/SC 7/WG 10.
Floating Systems Under development.
Structural materials Under development.
Marine operations Under development.
Other Topics
* Publication of IOGP Specification, referencing the ISO DIS (publicly available from ISO) and no supplementary requirements

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Published Supplementary Specifications:
Pre-JIP35 vs Minimum Essential Requirements

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Consolidation & Reduction of Company Requirements:
Pre-JIP35 vs IOGP Published Requirements

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Current Status
• Two standards in progress through ISO TC67/SC7.
• Three specifications under development as part of Phase 3.
• Adoption and downgrading of operator specific company requirements in progress.

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Further Opportunities
• Downgrading of company requirements to recommendations or guidelines
• These supplementary requirements are being considered for incorporation into the
ISO base standards at next revision/opportunity
• Further alignment between the ISO and API standards
• Further improved technical writing of these standards and company specifications

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For more information please contact:
www.iogp.org
Registered Office
City Tower
Level 14
40 Basinghall Street
London EC2V 5DE
United Kingdom
+44 (0)20 3763 9700
reception@iogp.org
Houston Office
19219 Katy Freeway
Suite 175
Houston, TX 77094
United States
+1 (713) 261 0411
reception@iogp.org
Brussels Office
Avenue de Tervuren 188A
B-1150 Brussels
Belgium
+32 (0)2 790 7762
eu-reception@iogp.org
Andre van der Stap, Shell
Andre.vanderstap@shell.com
Philip Smedley, bp
philip.smedley@uk.bp.com
Sajeev Menon, IOGP
sm@iogp.org