AS 2885.1 – 2007 - apia.net.au Venton - AS2885...28/02/07 Phil Venton AS 2885.1 2007 Revision –...

28/02/07 Phil Venton

AS 2885.1

AS 2885.1 – 2007

Launch Seminar

Philip Venton


AS 2885.1

ME38-1 ConstitutionAmey, A Andrews, D Balendran, BBhatia, M Coates, M Colvin, PCope, G Dunn, M Ebdon, MFletcher, M Hourmozi, M Ihdayhid, KJaques, S Karunakaran, V Kempster, PMcDonough, R Moss, H Piper, JPugh, A Roach, I Schultz, RTuft, P Upritchard, P Venton, P


AS 2885.1

Current Revision


AS 2885.1

Current Revision Highlights

• 38 Meetings Since 1999• AS 2885.1 1997 Amendment 1, 2001• 87 “Issue” Papers• 12/2004 Public Comment Draft• 11/2006 Postal Ballot• Today “Final” Draft


AS 2885.1

2007 Revision – 0.8 Design Factor• Change considered potentially

controversial• Decide to Rationally Analyse the

impact of a change on each component of Standard

• Issue Papers• Research


AS 2885.1

2007 Revision – 0.8 Design Factor

• 12 Papers – Materials• 14 Papers – Safety• 8 Papers – Fracture• 30 Papers – Mechanical• 21 Papers – Operations / Procedure• 2 Papers – Electrical/Corrosion


AS 2885.1

2007 Revision – 0.8 Design Factor• Paper Written• Debated in Committee – Revised• Research undertaken where Rqd.• Papers published on APIA Web• Public Comment Sought• Presentations at Seminars/Conf• International Conference


AS 2885.1

2007 Revision – 0.8 Design Factor• Agreed Change Incorporated in

Standard• Changes Recorded• Issue Papers record reasoning• Final changes will provide basis for

companion document


AS 2885.1

2007 Revision• Complete Revision• Structure revised into Logical Sections• Text rewritten to clarify intent• Stress and Strain – clarify • Extensive Informative Appendixes• Expert advice sought from international

experts• APIA Research Outcomes incorporated


AS 2885.1

AS 2885.1Is it Prescriptive?

YESPrescriptive about the PROCESSPrescriptive about COMPETENCEPrescriptive about RECORDSPrescriptive about DESIGN PROCESSNOT generally prescriptive about DETAIL (ie not COOK BOOK)


AS 2885.1

Preface • Interim• Contains the Scope of the AS 2885

Standard – which will be incorporated into Part 0

• Major changes identified


AS 2885.1

Section 1 - General•Text Common to each Part moved to

new Part 0•Definitions revised•Nomenclature standardised and

tabulated – not defined in document•Retrospective application of specific

safety requirements


AS 2885.1

Section 2 - Safety•Complete revision to reflect

experience since 1997•Rewrite to clearly define obligation

for robust process• Flowsheet Rewritten•Clearly identify other safety processes•Much detail moved to Appendices


AS 2885.1

Section 2 - Safety• Input from AS 4360 Committee•Process restructured into 2 parts•Safety Management Study•Risk Assessment (AS 4360)

•Risk Matrix Revised from 4 x 6 to 5 x 5•Obligations for ALARP• Integrity of Process


AS 2885.1

Section 3 - Materials• Referenced Standards Updated• CRA and Fibreglass Materials Permitted• Yield strength defined• Pipe strength derating with temperature• Minimum fracture toughness for ≥ DN100• Trim limits for ERW pipe defined• Temperature affected items• Traceability, Records Clarified


AS 2885.1

Section 4 – Design General• Route & ROW• Location Classes (R1, R2, T1, T2) redefined• Secondary Classes (S, CIC, I HI, W)• Marking obligations revised• Minimum obligations for Design Basis• MAOP – Test Pressure Factor• Isolation Plan


AS 2885.1

Section 4 – Design General• Special Provisions in High Consequence

Areas• No Rupture• Maximum Energy Release Rate

• Obligation to satisfy these requirements for changed location class (encroachment)

• Where ALARP is used – Demonstrate robust process


AS 2885.1

Section 4 – Design General• Fracture Control • Fully revised • Peer review from overseas expert paid by

APIA research & standards• Critical defect length calculation

• Low temperature excursions• Energy discharge rate calculation• Appendix L Expanded


AS 2885.1

Section 4 – Design General• Resistance to Penetration• Process defined in DR04561 revised• Found to be very conservative• Mandatory requirement removed except

for high consequence areas• Pen. Resistance to satisfy SMS • New process to recognise that different

locations require different Penetration Resistance


AS 2885.1

Section 5 – Pipeline• Major Change – Wall Thickness is required

to satisfy the governing load condition at each location along a pipeline

• Pressure design thickness is the minimum wall thickness

• Maximum design factor = 0.80• Pipeline Assemblies = 0.67

Note: Stress analysis limit of 0.72*SMYS nothing to do with design factor


AS 2885.1

Section 5 – Pipeline• Allowances redefined• Tolerance for pipe manufactured from

plate and from seamless process


AS 2885.1

Section 5 – Pipeline


AS 2885.1

Section 5 – Pipeline• Thickness for external pressure• External interference protection revised• Cover in rock strengthened• Pre-qualified design introduced


AS 2885.1

Section 5 – Pipeline• Stress and Strain full revision• Equations – transparent & defined• Limits tabulated• API 1102 for Road & Rail X, with

modified limits • Limit State Design concepts permitted• Extensive informative Appendices with

equations


AS 2885.1

Section 5 – Pipeline• Special Construction Revised• Above ground construction permitted in

specific locations• Branch connection reinforcement

provisions of AS 2885 – 1987 reintroduced• “O”- let fitting use restricted


AS 2885.1

Section 5 – Pipeline• “O”- let fitting use restricted


AS 2885.1

Section 5 – Pipeline• “O”- let fitting use restricted

• Designed to MSS SP 97 for thick wall pipe• Use on anything other than seamless, schedule

pipe to ASME B31.3 is outside scope of MSS SP97

• Specific assessment required to determine whether reinforcement complies

• Risk of failure when there is differential settlement, moments and fatigue

• Minimum line pipe thickness 6.4 mm


AS 2885.1

Section 6 – Stations• Separated from “Pipeline”• Design basis for Stations introduced• General tidy-up


AS 2885.1

Section 7 – Instrument-Control• Separated from “Pipeline General”• Obligation for Transient Pressure analysis

and control defined• Pressure control obligations clarified• Fluid property limit compliance• General obligations relating to SCADA


AS 2885.1

Section 8 – Corrosion• Essentially Section 5• Revised & updated• Rate of degradation concepts• Links to Appendices which are revised &

updated


AS 2885.1

Section 9 – MAOP Uprating• New Section • Uprating permitted in existing standard

but no process defined• Expectation in industry that with

introduction of 0.8 design factor, some pipelines may be able to be uprated

• Recent pipelines designed/tested for this• Existing pipelines designed for 0.6 could

be uprated to 0.72


AS 2885.1

Section 9 – MAOP Uprating• Section defines the minimum obligations

for demonstrating the capability of the pipeline to be safely operated at a pressure other than the licensed MAOP

• At the completion of the process, the new MAOP will be determined

• May be higher (or lower) than licensed MAOP


AS 2885.1

Section 9 – MAOP Uprating

• Interaction with Regulator through process

• Regulator must ultimately approve any change

• Obligation to “commission” pipeline at new operating pressure


AS 2885.1

Section 9 – MAOP Uprating Issues• Concern within Committee that

experience with new pipelines at 80%SMYS needed before upratingexisting pipelines

• Committee considers the section an essential part of this Revision

• Maximum uprated pressure limit - 0.72 design factor equivalent

• This may be removed with experience


AS 2885.1

Section 10 – Construction•Section Revised•As-built survey accuracy limits•Cad-Weld limits•Backfill and water crossings •Gauging plate use in confirming

compliance with dent limits


AS 2885.1

Section 11 – Testing• Revised to address obligations for 0.8

design factor• Require use of Software particularly when

testing to ≥ 100% SMYS• Testing with Gas• Some material may be moved to Part 5

when it is revised


AS 2885.1

Section 12 – Records

• Obligations for new pipeline at handover revised

• Believed to be compatible with Part 3• Recognise electronic format


AS 2885.1

Appendices• Complete revision• Informative and Normative• Some may say “too much”• Additional Appendixes may be added by

amendment after publication


AS 2885.1

Appendices – Safety (B, C, D, E, F, G, H, I)

• Combination of Normative and Informative

• Much of the detail material in Section 2 of AS 2885.1 – 1997 and HB 105

• HB 105 will be withdrawn


AS 2885.1


• Appx. B –Safety Management Study process• Appx. C – Threats• Appx. D – External interference protection• Appx. E - Effective of EIP Controls• Appx. F – Qualitative Risk Assessment

• In accordance with AS 4360• Severity and Frequency updated• Risk Matrix now 5 x 5• Risk Treatment includes Extreme risk


AS 2885.1


• Appx. G – ALARP• ALARP is serious• It is legally defined• Sentencing a risk as ALARP cannot be done

without conscious decision and;• Sufficient work to be able to demonstrate (in

court if necessary) that the solution truly complies with the ALARP principle

• Important when evaluating encroachment effects


AS 2885.1


• Appx. H – Integrity of Safety Management• Appx. I – Environmental Mgt. (Risk Approach)


AS 2885.1

Appendices – Other• Appx. L – Fracture (Revised)• Appx. M – Resistance to Penetration (New)• Appx. N – Fatigue (New)• Appx. T – Bolt Tensioning (New)• Appx. U – Stress type definitions• Appx. V – External Loads• Appx. W – Combined Equivalent Stress• Appx. X – Pipe Stress Analysis• Appx. Y – Radiation Contour• Appx. Z – Reinforcement of Branch Conn.


AS 2885.1

Technology Maintenance• ISO TC67/SC2 Participating membership• ME38-1 member attends annual meeting• Active contribution to ISO development• APIA Research & Standards program• International Research via PRCI & EPRG• Joint Technical Meeting Canberra 16-20

April 2007


AS 2885.1

Conclusion• ME38-1 undertook an exhaustive investigation

to understand the issues associated with pipeline pressure design at 80% of SMYS

• Conclusion that it was safe

• Outcome is a thoroughly revised, modern, world class Standard for energy pipelines

• Issue papers record the investigations and thinking – benefit for the future


AS 2885.1

Next Task• Publish Part O

• Amend Part 1 (Preface) to reflect Part O

• Amend Section 11 (testing) to make it compatible with Part 5

• Amend other parts to reflect standard symbology and definitions

• Do it all again for 2012 (but it should be easier)

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