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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Further information about the introduction of the regulations is available on this page above.
The following applies to CTOD tests: The visual examination shall include measurement of the height of weld reinforcement in order to ensure compliance with the requirements of Figure For a manual metal-arc welding process, joints using the combination of weld preparations shown in Figure Discontinuities that do not have length limits in Tier 1, such as certain conditions of porosity, hollow bead, root concavity, and undercut shall be acceptable, regardless of length, when more than one different type of discontinuity is superimposed upon another in the same position in the weld provided they do not collectively reduce the weld thickness below that of the thinner parent metal as assessed from the radiographic density.
The following applies to transverse butt tensile strength tests: Weld discontinuities that would not be acceptable under the workmanship standards of Tier 1 may be acceptable to Tier 2.
The WELDNET – AS/NZS 2885.2 Review
See also Appendix D. A flow chart illustrating these methods is shown in Figure 5. With low levels of hydrogen it may be 24 h or more. Each combination is to be identified by its complete classification number e.
Dimensions The dimensions of comparator shims shall be as shown in Figure Number of comparator shims Comparator shims shall be visible as follows: The gas pore comparator shim shall comply with the following: Branch weld The welder shall mark out, cut, fit, and weld a reinforced bevelled end sit-on branch to a pipe run.
In-service welds, which shall be qualified in accordance with Clauses 12 or 13 of aa Standard.
AS – Key Concepts and Application – Australian Pipelines and Gas Association
If data is stored electronically and computer presentations are used for reporting purposes, the data shall be stored in a form that allows re-creation of computer screen images or strip chart or other hard copy presentations at the original resolution so as to enable re-evaluation of the test data by a 2885.2 party. The preparation should preferably be made by the same method as will be used in production. Their disposition by repair or removal shall be as directed by the pipeline licensee. The yield strength may be represented by a material grade, e.
Where the position of a production weld cannot be related to one or more of the designated weld positions, a special test position shall be used.
Prequalified welding procedures, which are qualified under this Clause, are deemed suitable for use by dint of their long satisfactory use and do not require testing in accordance with Clause 5. Criteria shall be as follows: Welds qualified under the terms of Clause 5.
Non-essential variables are those Items in Table 5. In the case of the thicker component, the thickness for design internal pressure shall be not greater than 1. The depth of the concavity or the height of the convexity shall be equal to or less than 2 mm.
The WELDNET – AS/NZS Review – Australian Welding Institute
Dimensions The dimensions of the comparator shim shall be as shown in Figure The basis of the design of the welding procedure for the avoidance of HACC shall be documented in the welding procedure specification. PG that occurs in the finish pass shall be unacceptable when any of the following conditions exist: Any combination of electrodes may be used to qualify a procedure.
The means of maintaining work site to mainline valve communication. The 2885. sink effect makes the achievement of effective preheat difficult. Ws of acceptance The test specimen shall be deemed to be acceptable if the polished surface of the weld and the heat-affected zone shows the following: Such an assumed defect depth in thin-walled pipe can significantly change the requirement of weld strength matching despite the proportional decrease in defect limit. 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.