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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Equipment consisting of the following: Have appropriate gap setting. In order to guard against corruption or damage to electronic data files it is recommended that duplicate copies be held. The radiographic density through the weld metal shall not be less than 1.

If this additional test specimen fails, the welding procedure shall be deemed not to comply with this Standard. Material with a higher carbon equivalent shall be deemed to be valid for a parent metal with a lower carbon equivalent.

The xs for the test piece s shall be within the limits of the welding procedure essential variables and the welder and operator essential variables.

A depth of cover greater than 5 m. The heat sink effect makes the achievement of effective preheat difficult. Incompletely filled groove and external undercut shall be evaluated by visual examination. When the size of the radiographic indication produced by a pore is measured, the maximum dimension of the indication shall apply to the following criteria: Developing a repair procedure at the same time as the main procedure is good practice.

This is principally a consequence of the fact that planar defects are assumed to be one weld pass deep i. Radiographic method designation see AS Australian Standard AS Hollow bead is deemed not to be a defect and is acceptable when it does not reduce the weld thickness to less than that of the thinner parent metal as assessed from the radiographic density, or by the width of the discontinuity assuming it is of circular cross-section.

After any change of components or repair or adjustment of the system. Discontinuities shall be evaluated in accordance with Clause In such cases additional surface preparation may need to be carried out. Fillet welds do not qualify tee butt welds.


AS Gas pipe Welding_百度文库

The preparation should preferably be made by the same method as will be used in production. These joints shall be fitted with a low carbon steel back-up strip or suitable tape to prevent penetration of the weld into the carrier pipe. In GMAW welds, minor amounts of lack of fusion that comply with the NDE acceptance criteria can sometimes exhibit a crack-like appearance.

Requirements of the relevant Standard. Types of weld discontinuities and their proposed acceptance limits. Welding procedures complying with and welder qualifications in accordance with the appropriate previous editions of this Standard may continue to 2885.2 used for the maintenance of existing installations.

The work return clamp shall make good electrical contact with no evidence of arcing. The aggregate length of PG in any continuous mm length 22885.2 weld exceeds 13 mm. Experience has shown that excessive weld reinforcement height particularly at the top and bottom of welds has been a problem in the field, which has caused serious difficulties in meeting the density requirements in radiographic inspection.

28852. rate is proportional to the heat input, divided by the square of the electrode core wire diameter.

The WELDNET – AS/NZS 2885.2 Review

Quality of supply Part 2 of the regulations specify the standards for natural gas and LP Gas. The choice of which tier is to be used shall be approved.

On filler passes, peening shall be carried out when specified in the qualified welding procedure. Location A comparator shim shall match the curvature of the pipe and shall be placed alongside and parallel with the edge of the external weld with the grooves on the inside radius. Any unsoundness of a longitudinal weld or spiral weld in the vicinity of the area to be welded.

The regulations were promulgated on 4 July and came into effect on 2 August 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.

It is important that readers assure themselves they are using a current Standard, which should include any amendments that may have been published since the Standard was published. Each combination is to be identified by its complete classification number e. Category 3 operator qualification An operator holding a Category 3 operator qualification may weld the type or types of weld using automatic welding and in the positions qualified, but shall be limited by the welding procedure essential variables and the welders and operators essential variables.


Pipelines—Gas and liquid petroleum Part 2: The terminology and abbreviations described in Clause Any external or internal corrosion.

AS – Key Concepts and Application – Australian Pipelines and Gas Association

To maintain their currency, all Standards are periodically reviewed, and new editions are published. This Standard may be applied to the factory fabrication of pipeline assemblies manufactured from pipes and fittings. The number of passes is not less than 3.

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, and the likelihood that it may carry substantial currents. All components shall fit the pipe, and care shall be exercised to ensure that any longitudinal weld preparations are suitably aligned.

Production welds that do not comply with the selected criteria shall be repaired see Clause 23 or 24 or cut out see Clause Before continuing testing after any break, e. This Standard was published on 27 March A list of qualified welders or operators, including the identification symbol or mark, and the qualified welding procedures for ad each is qualified shall be signed by the inspector and maintained by the pipeline licensee. Corporate Freedom of information 285.2, reports, policies, plans, and contact information.

Additionally, cracking of regions of mid-section segregation in the heat-affected zone of the parent metal, where there is no significant through thickness dimension, shall not be cause for rejection. See also Appendix C. Cluster porosity PG that occurs in any pass except the finish pass shall comply with the criteria in Item a above.