AS 2885.2 PDF
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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You may be required to comply with this standard if you are a registered gas fitter. Destructive tests may be used to supplement non-destructive examination. The regulations mandate the following standards: Before continuing testing after any break, e. Similarly, the maximum wall thickness and maximum carbon equivalent permitted for low hydrogen processes has been relaxed.
Please consult the Contact Officer for more information and to ascertain the level of compliance that may be required. Apart from the change in title there has been no notable change to this section. The documentation shall include a statement of the qualifications and experience of the welding engineer who will supervise the welds. The size, convexity or concavity and leg lengths shall be measured to the nearest 0.
CTOD tests are only mandatory when the criteria for acceptance of girth weld discontinuities is Tier 2 see Clause The formation of mixtures of flammable vapour, including gas and air, shall be prevented.
The visual examination shall include measurement of the height of weld reinforcement in order to ensure compliance with the requirements of Figure HB that exceeds this limit shall be unacceptable when any of the following conditions exist: The welding procedure qualification test may also be used to qualify a welder see Clause 7.
The welding of corrosion-resistant alloy steel pipelines, or pipelines with wall thickness less than 3.
The WELDNET – AS/NZS 2885.2 Review
Any combination of electrodes and gases may be used to qualify a procedure. The pipeline shall be earthed prior to the commencement of welding or cutting.
All components shall fit the pipe, and care shall be exercised to ensure that any longitudinal weld preparations are suitably aligned. The size and location of reference reflectors shall be determined for the project after the welding procedure has been established.
It shall be prepared in accordance with AS Pigs can be of various types, such as gauging pig for checking a pipeline bore, a swabbing pig for cleaning a pipeline, or an intelligent pig for checking wall thickness, 285.2 or cracking, or the integrity of the coating of a pipeline. Non-destructive examination in accordance with Clause ws The terminology and abbreviations described in Clause This means that a twotier system in which ECA was Tier 2 has already been established.
Types of weld discontinuities and their proposed acceptance limits. 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.
The WELDNET – AS/NZS Review – Australian Welding Institute
Any laminations or inclusions in the vicinity of the area to be welded. This reflection needs to be separately identified from indications given by other discontinuities. It may be conducted by a third party. See Clauses 24 and 25 for information dealing with arc burns.
Their disposition by repair or removal shall be as directed by the pipeline licensee. Criteria of acceptance The average absorbed energy for each set of three test specimens shall be 40 J. The following applies to ws butt tensile strength tests: WorkSafe Regulation and promotion of safety in general industry. 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.
Where the material wall thickness is less than the standard thickness of the AS The pipe diameter is within the range DN 50 to DN Tier 1 may be used without any special pre-qualification requirements.
LR or LS shall be unacceptable when any of the following conditions exist: Although Tier 2 defect limits are proportional to wall thickness, variations in wall thickness can strongly influence defect tolerance. Tack welds that are unsound shall be ground out. Defects shall be aw with the radiograph, located with respect to the weld and recorded on a test report.
Gas supply network safety and network supply standards
Final nondestructive examination shall be carried out not sooner than 24 h after completion of welding, followed by leak testing. Your email address will not be published. In order to guard against corruption or damage to electronic data files it is recommended that duplicate copies be held.
The rotational speed of the test unit shall be the same as for production testing. Specific attention should be paid to the risk of ignition or electrocution due to the pipeline being at an elevated potential with respect to earth, 28855.2 the likelihood that it may carry substantial currents. Unless it can be shown that it is difficult to meet the required mechanical properties see Clause Welds made in accordance with other standards, which shall be qualified in accordance with the relevant Standard.
The essential variables in Table 5.
The depth of internal undercut shall be assessed in accordance with Clause Description You must comply with this standard if you intend to weld pipelines that carry gas and liquid petroleum.
Where the weld meets all the criteria of acceptance, and the results have been recorded see Clause 6. Discontinuities shall be evaluated in accordance with Clause Fitting The attachment shall be shaped to the circumference of the pipe or pressurecontaining component.
The production of documentary evidence showing that the test piece required for the qualification of the welding 8285.2 has been welded, and that the procedure has been qualified. This Standard may be applied to the factory fabrication of pipeline assemblies manufactured from pipes and fittings.