AS/NZS This joint Australian/New Zealand standard was prepared by joint Technical Committee ME, Petroleum Pipelines. AS/NZS () Revisions AS () has recently been revised and released as AS/NZS () with a number of. AS — Australian Standard. ®. Pipelines—Gas and liquid petroleum. Part 2: Welding. A. S. —. This is a free 10 page.
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The grouping of 285.2 shall involve sound engineering judgement and be fully investigated and documented with respect to burn-through and hydrogen cracking potential and should include worst case welding procedure qualification testing. For pipelines longer than 10 km, welding procedure qualification 2885.2 of a minimum of three production cut-out welds for weld procedure verification.
Discontinuities so detected shall be subsequently evaluated using the appropriate sensitivity and recording requirements as follows: CVN testing is now required for most butt welds and repair welds and for all defect acceptance criteria levels i.
AS 2885.2 – Key Concepts and Application
Section 6 of this revision has also made some noticeable changes to the essential variables for welding procedures. Labour Relations State system employment laws and public sector labour relations. This requirement was inadvertently omitted from the edition. In such cases additional surface preparation may need to ae carried out.
WorkSafe Regulation and promotion of safety in general industry. Users of the Standard should not rely upon the list in order to ascertain whether there have been changes made to the previous version of the Standard. A depth of cover greater than 5 m. The preheat temperature may 2885.2 the ambient or pre-existing temperature of the joint, or it may result 285.2 the heating of the parent metal in the region of the weld.
The essential variables associated with the welder or operator qualification and welding procedure qualification are not the same; welder or operator qualification is a function of the essential variables listed in Table 7.
The WELDNET – AS/NZS Review – Australian Welding Institute
The welding of such pipelines has to be given special consideration. Except for weld metal deposit repair welds, side bend tests are applicable only to welds made by gas metal-arc and flux cored welding processes. Branch weld The welder shall mark out, cut, fit, and weld a reinforced bevelled end sit-on branch to a pipe run.
The use of approved engineering critical assessment ECA procedures for the development of fitness-for-purpose acceptance criteria for particular circumstances has been permitted by this Australian Standard for some time.
Your email address will not be published. It shall include all the necessary information to enable radiographs to be taken, processed, and interpreted to the requirements of this Standard. Please consult the Contact Officer for more information and to ascertain the level of compliance that may be required.
Welds qualified under the terms of Clause 5. Production welds that do not comply with the selected criteria shall be repaired see Clause 23 or 24 or cut out see Clause A list of qualified welders or operators, including the identification symbol or mark, and the qualified welding procedures for which each is qualified shall be signed by the inspector and maintained by the pipeline licensee.
Gas supply network safety and network supply standards
Test pieces shall be assembled in the required position so that the weld can be made in accordance with ae welding procedure specification. The workmanship based acceptance criteria in Tier 1 do not require classification of discontinuities according to whether they are planar or non-planar. For wall thicknesses in excess of 6 mm, the procedure shall comply with AS The regulations mandate the 288.2 standards: Submit a Comment Cancel reply Your email address will not be published.
Where the material wall thickness is less than the standard thickness of the AS A B ii Where the outside diameter of the pipe is not greater than It shall be unacceptable when any of the following conditions exist: CTOD tests are only mandatory when the criteria for acceptance of girth weld discontinuities is Tier 2 see Clause New welding procedures and new welding qualifications shall be qualified in accordance with this Standard.
The gain level for each transducer shall be recorded as the primary reference sensitivity for respective transducers. Department of Natural Resources and Environment Vic. Part 2 of the regulations specify the standards for natural gas and LP Gas.
On filler passes, peening shall be carried out when specified in the qualified welding procedure. It should be noted that highly susceptible materials may fail in less severe environments. Before cutting the line pipe with a hot tapping tool, the weld and adjacent a should be leak-tested at a pressure not greater than the current internal pressure of the pipeline.
The new revision aims to address previous issues and update the standard in qs with the current state of pipeline welding.
Before continuing testing after any break, e. This condition is shown schematically in Figure Where 2885. than one welder or operator is involved in making a test weld, assessment by each of the applicable methods. Section 5 has been revised to include additional requirements and further recommendations with regards to the design of a welded joint.
Ensuring that all reports and records are made as required. A welder who has qualified to make a weld having one type number shall be qualified to make welds having other type numbers in accordance with Table 4.
If this is necessary it shall be done by reference to the results of the non-destructive examination. Provide access for welding operation. Refer to Clause 5.