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 examination of all production welds. In that case CTOD tests may 288.52 required when the thickness is less ae 13 mm.
Changes in nonessential variables require documentation but do not require re-qualification. The pipe to be welded shall be inspected visually and by non-destructive means, and at least the following shall be reported: The supervisor shall be qualified in accordance with Clause All transducers shall be positioned at the appropriate stand-off position and adjusted to provide an optimized signal from the relevant calibration reflector and gain adjusted to the specified percentage of full screen height.
Any combination of electrodes 2885.2 or without gas may be used to qualify a procedure. For reciprocity of weld types for welder qualification see Table 4.
AS 2885.2 – Key Concepts and Application
The 2885.2 between a sit-on branch fitting and a pipe shall be designated a single bevel butt weld. Labour Relations State system employment laws and public sector labour relations.
The welding procedure used for supervised welds shall be documented and shall be approved. The joint preparation shall be 285.2 specified tolerances for production, and should preferably be made by the same method as that used in production.
If this is necessary it shall be done by reference to the results of the non-destructive examination. Discontinuities shall be evaluated in accordance with Clause Tee butt welds qualify fillet welds as listed.
To safeguard the public and consumers in such a changing environment, these new regulations have been introduced to ensure:. The material for the test piece s shall be within the limits of the welding procedure essential variables and the welder and operator essential variables. For wall thicknesses less than 6 mm, the test method shall be approved.
The grouping of conditions 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. Any length of internal concavity is acceptable, provided the density of the radiographic image of the internal concavity does not exceed that of the thinnest adjacent base metal.
The yield strength may be represented by a material grade, e.
Quality of supply Part 2 of the regulations specify the standards for natural gas and LP Gas. It is expected that Tier 1 will be most commonly applied where the special requirements of the other tiers are not justified by the scale of the project. The welding may be done by a manual metal arc, submerged arc, gas tungsten arc, gas metal arc, flux cored arc, oxyacetylene, or by a combination of these using a manual, semiautomatic, or automatic welding technique or a combination of these techniques.
The WELDNET – AS/NZS 2885.2 Review
A study on laser clean Tier 2, however, permits increased defect limits based on demonstrated mechanical properties, i. Non-essential variables are those Items in Table 5. The resultant radiograph s shall comply with the approved procedure.
Requirements of the relevant Standard. CTOD tests are only mandatory when the 2858.2 for acceptance of girth weld discontinuities is Tier 2 see Clause Both the arc voltage and 8285.2 current have to be measured accurately with voltage measured between the electrode holder or contact tube and the work piece. The preferred method of ultrasonic examination is with a mechanized system in accordance with Aa Material with a higher carbon equivalent shall be deemed to be valid for a parent metal with a lower carbon equivalent.
For general enquiries please contact the department using the telephone numbers or email addresses on our contact us page. The gain level for each transducer shall 2858.2 recorded as the primary reference sensitivity for respective transducers. Refer to Figure 4.
The WELDNET – AS/NZS Review – Australian Welding Institute
If data is stored electronically and computer presentations are used for reporting purposes, the data shall be 28852. 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 third party.
Images of discontinuities observed on the radiograph shall be reported and recorded in accordance with Clause For this reason it is important that an assessment be made of the capability of the welder to produce welds within the required reinforcement limits. Defects shall be identified, and symbolized in accordance with AS The ranges of non-essential variables may be extended by documentation only.