As 2885 1 Pipeline

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COMMITTEE ME-038 DR 04561 (Project ID: 2425) Draft for Public Comment Australian Standard LIABLE TO ALTERATIONDO NOT USE AS A STANDARD BEGINNING DATE FOR COMMENT: 17 December 2004 CLOSING DATE FOR COMMENT: 18 February 2005 PipelinesGas and liquid petroleum Part 1: Design and construction COPYRIGHT Draft for Public Comment Australian Standard The committee responsible for the issue of this draft comprised representatives of organizations interested in the subject matter of the proposed Standard. These organizations are listed on the inside back cover. Comments are invited on the technical content, wording and general arrangement of the draft. The preferred method for submission of comment is to download the MS Word comment form found at http://www.standards.com.au/Catalogue/misc/Public%20Comment%20Form.doc. This form also includes instructions and examples of comment submission. When completing the comment form ensure that the number of this draft, your name and organization (if applicable) is recorded. Please place relevant clause numbers beside each comment. Editorial matters (i.e. spelling, punctuation, grammar etc.) will be corrected before final publication. The coordination of the requirements of this draft with those of any related Standards is of particular importance and you are invited to point out any areas where this may be necessary. Please provide supporting reasons and suggested wording for each comment. Where you consider that specific content is too simplistic, too complex or too detailed please provide an alternative. If the draft is acceptable without change, an acknowledgment to this effect would be appreciated. When completed, this form should be returned to the Projects Manager, Kris Longmore via email to Kris.longmore@standards.org.au. Normally no acknowledgment of comment is sent. All comments received electronically by the due date will be put before the relevant drafting committee. Because Standards committees operate electronically we cannot guarantee that comments submitted in hard copy will be considered along with those submitted electronically. Where appropriate, changes will be incorporated before the Standard is formally approved. If you know of other persons or organizations that may wish to comment on this draft Standard, could you please advise them of its availability. Further copies of the draft are available from the Customer Service Centre listed below and from our website at http://www.standards.com.au/. STANDARDS AUSTRALIA Customer Service Centre Telephone: 1300 65 46 46 Facsimile: 1300 65 49 49 e-mail: mailto:sales@standards.com.au Internet: http://www.standards.com.au/ Draft for Public Comment STANDARDS AUSTRALIA Committee ME-038Petroleum Pipelines Subcommittee ME-038-01 Design and Construction DRAFT Australian Standard PipelinesGas and liquid petroleum Part 1: Design and construction (To be AS 2885.1) This Standard specifies requirements for the design and construction of carbon and carbon manganese steel pipelines and associated piping and components that are used to transmit single and multiphase hydrocarbon fluids. Major changes proposed in this draft relate to a structural basis for increasing the maximum allowable operating pressure of a qualifying existing pipeline. These benefits are supported by robust requirements for safety, structural design, construction, testing and record keeping. Comment on the draft is invited from people and organizations concerned with this subject. It would be appreciated if those submitting comment would follow the guidelines given on the inside front cover. This document is a draft Australian Standard only and is liable to alteration in the light of comment received. It is not to be regarded as an Australian Standard until finally issued as such by Standards Australia. DRAFT ONLY 2 DRAFT ONLY DR04561.doc PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee ME-038 on Petroleum Pipelines, to supersede AS 28851997, PipelineGas and liquid petroleum. AS 1697, Gas transmission and distribution systems is currently undergoing revision and will be published as a distribution pipeline standard, and has been deleted as a reference standard. This Standard is the result of a consensus among Australian and New Zealand representatives on the Joint Committee to produce it as an Australian Standard. The objective of this Standard is to provide requirements for the design and construction of steel pipelines and associated piping and components that are used to transmit single phase and multiphase hydrocarbon fluids. This standard provides guidelines for use of pipe manufactured from certain non steel or corrosion resistant materials. This Standard is one of the following series, which refers to high pressure petroleum pipelines: AS 2885 PipelinesGas and liquid petroleum 2885.0 Part 0: General Requirements 2885.1 Part 1: Design and construction (this Standard) 2885.2 Part 2: Welding 2885.3 Part 3: Operation and Maintenance 2885.4 Part 4: Submarine pipelines 2885.5 Part 5 Field Pressure Testing The terms 'normative' and 'informative' have been used in this Standard to define the application of the appendix to which they apply. A 'normative' appendix is an integral part of a Standard, whereas an 'informative' appendix is only for information and guidance. Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of the Standard. This comprehensive revision is the result of extensive work by subcommittee ME-038-1 in response to a request from the industry that it consider increasing the design factor from 0.72 to 0.80. This request prompted a detailed review of each section and each clause of the Standard, resulting in the preparation of some 70 Issue Papers that considered the underlying technical issues (in relation to an increased design factor) and recommended changes to the Standard. These issue papers were debated within the subcommittee and published on the Industry web site to allow consideration by the Industry. The results of these deliberations form the basis of this revision. The revision also reflects the results of a significant and ongoing industry funded research program undertaken by the Australian Pipeline Industry Association and its research contractors, and through its association with the Pipeline Research Council International and the European Pipeline Research Group. This revision provides a basis for Industry to benefit through the application of an increased factor for pressure design (for new pipelines) and a structured basis for increasing the MAOP of a qualifying existing pipeline. These benefits are supported by robust requirements for safety, structural design, construction, testing and record keeping. Significant changes in this Revision include: 1) A restructure of the sections of the document to separate Pipeline General, Pipeline, Stations, and Instrumentation and Control. DRAFT ONLY 3 DRAFT ONLY DR04561.doc 2) The separation of information common to Parts 1, 2 3 and 5 of the Standard to a new part (Part 0), including the requirements for a holistic approach to pipeline and environmental safety, and including definitions that apply to the Standard. 3) The incorporation of a section defining the minimum requirements for a pipeline whose maximum allowable operating pressure is proposed to be raised. 4) Section 2 (Safety) is re-written, reflecting experience gained in the seven years since it was revised to provide a mandatory requirement for risk assessment. This revision (2005) provides more explicit guidance on obligation to undertake safety assessments with the integrity required for compliance with this Standard. 5) Section 3 (Materials) is revised to better address the treatment of materials used in pipelines. It includes a requirement to de-rate the specified minimum yield stress of pipe designed for operation at temperatures of 65C and higher. The use of fibreglass and corrosion resistant alloy pipe materials for pipelines constructed to this Standard is permitted and limited, in this Section. 6) Section 4 (Pipeline General) contains most of the material in the Pipeline General section of the 1997 revision. The Section has been expanded to include: i. A mandatory requirement for the design of a pipeline for the existing and intended land use. ii. A revision of the requirements for effective pipeline marking including a change to require the marker sign to comply with a Danger sign in accordance with AS 1319. iii. A Plan for Isolation of a Pipeline. iv. Special requirements for pipelines constructed in locations where the consequence of failure by rupture is not acceptable. Provisions for compliance with these requirements for pipelines constructed to this, or to an earlier revision of the Standard in land where the location classification has changed to residential (or equal) is included. v. The location classification definitions are revised and additional sub-classes are defined. vi. The hydrostatic strength test pressure is re-defined to address the situation where the pipe wall thickness exceeds the pressure design thickness, including corrosion allowance). vii. Provisions for low temperature excursions. viii. Calculation methods for critical defect length, energy release rate and radiation contour 7) The requirements for Fracture