David Galbraith Standards presentation 080827 A · PDF file70°N 0 m 200 m 500 m 1 000 m 2 500 m 5 000 m 10°W 0° 10°E 20°E 30°E. Ptil / David Galbraith 1/ 17 ... – Norsok –

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


• 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


Oil and Gas Industry – Published standards

By end 2007 – 131 standards published


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


Standardisation Bodies - Relationships

IndustryIndustry APIPtil OLFASME

NationalNational

RegionalRegional CEN / CENELEC

InternationalInternational ISO / IECVienna Agreement

OtherEuropean

Japanetc.ANSI


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


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


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


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


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?


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


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


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)


ISO 19901-1Metocean design and operating considerations

• Full International Standard• Project leader Chris Shaw, Shell,

Netherlands• Published 2005


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


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


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


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)


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


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


ISO 19901-5Weight control during engineering and construction

• Fully published• Project leader -

Eivind Warren -Norway

• Formalization of weight control procedures


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.


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


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)


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


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


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


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


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


Implementation plans – USA

Documents published as, e.g. (ANSI)/API RP2A LRFD / ISO 19902


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


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)


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