My post late yesterday was a bit brief – I just wanted to get the news out.
Congratulations and thanks are due to Phil Venton (chair of Standards Australia committee ME-038) for shepherding this complex suite of documents through the somewhat Byzantine processes of Standards Australia. AS 2885 has become a very complex standard. Until yesterday’s release each Part had been revised and published more-or-less independently. The various Parts were not exactly inconsistent but they were not well coordinated either. This release of the four Parts that are most interrelated goes a long way to improving the harmonisation between them. Achieving that coordination between three independent-minded committees (and Standards Australia) has been a mammoth task that Phil has managed largely on his own.
Part 0. The major change is a complete re-write of Section 3 on approvals. It has grown from seven lines to a page and a half and requires proper management and auditing of the approvals process. It also lists explicitly the documents that must be approved by the pipeline Licensee and cannot be delegated.
Part 1. This version was meant to be just an amendment but a couple of the changes were a bit too extensive and Standards Australia required that it be published as a new revision. There are numerous minor amendments and corrections, many relating to approvals and overall harmonisation between the Parts. Two substantial new sections have been added:
- Section 5.12 on design of hydrostatic test sections, in order to harmonise with the new Part 5. It makes clear that design of test sections is a responsibility of the pipeline designer rather than the test engineer.
- Appendix BB on design of carbon dioxide pipelines, in response to Federal government interest and in anticipation of pipelines for transport of captured carbon dioxide for sequestration.
Part 3. A complete re-write, as I said before. The changes are much too extensive to attempt a summary here. I will comment only that there is now a great deal more emphasis on how the pipeline is managed rather than just technical requirements. The former Safety and Operating Plan has now become a Pipeline Management System. APIA have run a series of launch seminars around Australia and New Zealand so presumably most people who use Part 3 already have a fair idea of what to expect.
Part 5. Also a complete re-write. It recognises three types of tests: Type 1 with test pressure lower than mill test pressure, Type 2 where maximum test pressure will not cause any pipe to exceed yield strength, and Type 3 where plastic strain is possible. There are increasingly stringent requirements for each type. As noted above, design of hydrostatic test sections is an important function but is included in Part 1.
Where to next? I think the Part 3 and Part 5 committees will probably take a long rest. The Part 1 committee had an easy ride this time but will be re-convened before long to look at a serious technical revision in the light of experience with the 2007 edition. Publication of that next revision will be at least a couple of years away (and possibly a lot longer).