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International Standardsand the status of the offshore structures codes
David GalbraithConvenor ISO TC 67/SC 7/WG 3
Project Leader ISO 19902 & ISO 19901-3Fixed Steel Offshore Structures / Topsides Structures
Ptil / David Galbraith 1/2
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 1/3
• 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
ISO/TC67 Strategic Policy Statement
Ptil / David Galbraith 1/4
Oil and Gas Industry – Published standards
By end 2007 – 131 standards published
Ptil / David Galbraith 1/5
Worldwide Participation in ISO/TC 67
includes Certifying Bodies, Legislators,National Standards Bodies, Academics etc.
Others 218
Oil/GasCompanies
337
Vendors/Suppliers
259
Estimated total of >800 people participating in ISO/TC67
Ptil / David Galbraith 1/6
Standardisation Bodies - Relationships
IndustryIndustry APIPtil OLFASME
NationalNational
RegionalRegional CEN / CENELEC
InternationalInternational ISO / IECVienna Agreement
OtherEuropean
Japanetc.ANSI
Ptil / David Galbraith 1/7
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 1/8
ISO/TC 67 Organisation
ISO/TC67
SC 1 SC 2 SC 7SC 3 SC 4 SC 5 SC 6WG 2
WG 8
WG 4
WG 5
WG 7
WG 9
Linepipe
Linepipe
Pipelines
Pipelines
Drilling Fluids
Drilling Fluids
& Well
Cemen
ts
& Well
Cemen
ts
Drilling/Pro
d
Drilling/Pro
d’’nn
Equipment
Equipment
Casing, T
ubing
Casing, T
ubing
& Drillpipe
& Drillpipe
Proce
ssing
Proce
ssing
Equip./Sys
tems
Equip./Sys
tems
Offshore
Offshore
Structu
res
Structu
res
Materials, Equipment and Offshore Materials, Equipment and Offshore Structures for Petroleum and Natural Structures for Petroleum and Natural Gas Industries: Gas Industries: Drilling, Production, Drilling, Production, Refining and Transport by PipelinesRefining and Transport by Pipelines
ConformityAssessmentPrinciples
DataCollection
AluminiumDrill Pipe
CorrosionResistantMaterials
Materials, CorrosionControl, Welding &Joining and NDE
Life CycleCosting
EC/MCEC = Executive CommitteeMC = Management Committee
Ptil / David Galbraith 1/9
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 1/10
Offshore Structures International StandardsAll types of substructure
ISO 19900 General requirements for offshore structures Published 2002
ISO 19901 Specific requirements for offshore structures
ISO 19901-1 Metocean Published 2005
ISO 19901-2 Seismic Published 2004
ISO 19901-3 Topsides structure Draft International Standard (ISO 2008?)
ISO 19901-4 Foundations Published 2003
ISO 19901-5 Weight Control Published 2003
ISO 19901-6 Marine Operations Draft International Standard (ISO 2008?)
ISO 19901-7 Station keeping Published 2005
Ptil / David Galbraith 1/11
Offshore Structures International StandardsDifferent Substructures
ISO 19902 Fixed steel offshore structures Publish 12/07
ISO 19903 Fixed concrete offshore structures Published 2006
ISO 19904-1 Floating (ship shape) structures Published 2006
ISO 19904-2 TLPs Not started
ISO 19905-1Site-specific assessment of jackups (requirements)
ISO 2010?
ISO 19905-2 Site-specific assessment of jackups (commentary) ISO TR 2010?
ISO 19905-3 Site-specific assessment of Semis Not started
ISO 19906 Arctic structures ISO 2010?
Ptil / David Galbraith 1/12
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 1/13
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 1/14
19900 "Petroleum and natural gas industries – General requirements for offshore structures"
• Published in December 2002– Reissue of ISO 13819-1
• 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 19902 and elsewhere
(may be moved)
Ptil / David Galbraith 1/15
ISO 19901-1Metocean design and operating considerations
• Full International Standard• Project leader Chris Shaw, Shell,
Netherlands• Published 2005
Ptil / David Galbraith 1/16
ISO 19901-1Metocean design and operating considerations
• Determination of metocean conditions in general
• Characterization and use of metocean conditions for design and operationa) extreme and abnormal
metocean conditions b) long-term distributions
of metocean conditionsc) normal metocean
conditions 55°N
50°N
60°N
65°N
70°N
0 m200 m500 m
1 000 m2 500 m5 000 m
20°E10°E0°10°W 30°E
Ptil / David Galbraith 1/17
ISO 19901-2Seismic design procedures and criteria
• Full International Standard• 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 1/18
19901-3 Topsides structure
• 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 2008
Ptil / David Galbraith 1/19
ISO 19901-3Topsides 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 1/20
ISO 19901-3 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 1/21
ISO 19901-4Geotechnical 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 1/22
ISO 19901-5Weight control during engineering and construction
• Fully published• Project leader -
Eivind Warren -Norway
• Formalization of weight control procedures
Ptil / David Galbraith 1/23
19901-6 - 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 19904 etc.
Ptil / David Galbraith 1/24
ISO 19902 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 1/25
ISO 19903Fixed 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 1/26
ISO 19904-1Floating 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 19904-2 – TLPs– Will follow at later date– No current action
Ptil / David Galbraith 1/27
ISO 19905Site-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 1/28
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
2007
ISO TC67/SC7 Programme of Work
= draft is within SC7 = doc. is publicly available
Document: ISO TC67/SC7 N 315 Rev.92008-01-30
= systematic review
Paris Delft Calgary
Updated at SC7 Stavanger – see also http://sc7.tc67.net/
StavangerBeijing
ISO 19905-1MOUs - Jackups
WG3
WG3
WG3
WG3
WG6
WG9
WG5
WG5
WG7
WG4
ISO 19900General RequirementsISO 19901-1MetoceanISO 19901-2SeismicISO 19901-3Topsides
ISO 19901-5Weight EngineeringISO 19901-6Marine operations
ISO 19902Fixed SteelISO 19903Fixed ConcreteISO 19904-1Floating - MSS
ISO 19901-4Foundations
2009
WG8
2006 2008
ISOAug
ISODec
Dec
ISO
JulDIS
Mar Jan
FDISApr
ISOOct
FDISJun
FebDIS
FDISAug
JunFDIS
AprFDIS
AugISO
SeptISO 19901-7Stationkeeping
WG3
ISOApr
FDISDecC Jul
WD DIS
SystematicReview
In progress
Nov ‘08
In progress
Aug ‘08
Jul ‘08
Dec ‘08
DIS FDIS ISO
F Dec
CD
ISO TR 19905-2MOUs - Jackups WG7 Feb
TR
NovCD
2010
ISO 19906Arctic offshore
ISO 19905-3MOUs - Floating WG7
WG5ISO 19904-2Floating -TLP
Oct
P-FOct
SC7 review required
Nov ‘09
Dec ‘09
Revision in Progress - TBA
CDMar
WG1 being reconstituted NWIP in progressWG1
Italy
Dec ‘10
WG3NWIPMarine Site Investigation
CDNov Sep
DISDec
FDIS
CDMar Dec
FDIS ISO
2011 2012
AprISO
TBA
NWIP being prepared
Ptil / David Galbraith 1/30
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 19900
• 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 1/31
Updating API / ISO documentsUS Regional Annex
API RP YY3rd Ed.
ISO 199XX-X:zzzz ISO 199XX-X:zzzz
API WRAPPER
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.
Text from published ISO
Modification needed for API
Ptil / David Galbraith 1/32
Implementation plans – USA
Documents published as, e.g. (ANSI)/API RP2A LRFD / ISO 19902
Ptil / David Galbraith 1/33
What needs to be done now?
• Software vendors– Update to comply with ISO 19902– Some have started this activity
• Operators– Specify use of ISO 19900 series in enquiries and orders– Update their internal rules and standards
• Underway in some cases
• Designers and consultants– Become familiar with ISO 19900 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 1/34
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 19900 suite of International Standards
• Plus hundreds of industry experts around the world (but principally from Europe and North America)
Ptil / David Galbraith 1/35
Internet resources
• Websites:– http://sc7.tc67.net
• TC67 SC7 information (maintained by me)– http://www.tc67.net
• API ISO page – can get status of documents from here– http://www.ogp.org.uk/standards
• OGP status– http://www.standard.no
• Norsok standards follow Petroleum