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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Department of Mines and Energy N. Tier 2, however, permits increased defect limits based on demonstrated mechanical properties, i. This term also applies to the purified product. The aggregate length of indications of HB in any continuous mm length of weld exceeds 50 mm.
Further information about the introduction of the regulations is available on this page above. Hollow bead is deemed not to be a defect qs 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.
Where more than one welder or operator is involved in making a test weld, assessment by each of the applicable methods. Specific attention should be paid to the risk of ignition or electrocution due to the pipeline being 2885. an elevated potential with respect to earth, and 28852 likelihood that it may carry substantial currents. A typical welding procedure qualification record and a welding procedure specification.
AS Gas pipe Welding_百度文库
Surface breaking porosity with any dimension exceeding 1. ZnO-graphene as gas se The methods and the requirements for qualifying welding procedures have been clarified.
Tee butt welds qualify fillet welds as listed. A code of practice is a set of rules which details how people in a certain industry should behave. Ensure that— i ii c combustible hydrocarbon fluid cannot flow towards the work site; and valves that isolate the work from the source of hydrocarbon fluids do not leak.
Change of arc type between spray arc, globular arc, pulsed arc, and short-circuiting dip transfer arc or between the use of a conventional power source and a controlled waveform power source. The use of Tier 2 acceptance criteria requires certain special requirements to be met. Porosity is generally spherical but may be elongated or irregular in shape, such as piping wormhole porosity WH.
AS 2885.2 – Key Concepts and Application
The method of defining time lapse shall be the same for production welds as is 28885.2 for procedure qualification welds. This means that a twotier system in which ECA was Tier 2 has already been established. The application of Tier 2 to wall thickness less than 7 mm is not allowed.
A record of the results of each test and qs test that has been repeated shall be made for each welding procedure specification. Weld passes in a butt weld shall be identified as shown in Figure 5. For example, restrictions with regards to time delay between passes and any change in consumable manufacturer are now clearly only applicable to cellulosic MMAW.
Between editions, amendments may be issued. Where direct measurement is not possible, undercut comparator shims or reference radiographs in accordance with Clause Reference reflectors shall be no larger than the maximum acceptable defects they simulate.
The gas pore comparator shim shall comply with the following: The minimum absorbed energy for individual specimens shall be 30 J.
The pipe ae does not exceed X60 and the carbon equivalent does not exceed 0. Parallel IL indications separated by approximately the width of the root bead wagon tracks shall be considered a single indication unless the width of either of them exceeds 1 mm. Each combination is to be identified by its complete classification number e.
The WELDNET – AS/NZS Review – Australian Welding Institute
These environments may cause stress corrosion cracking SCC of susceptible materials. Shallow crater cracks or star cracks are located at the stopping point of weld beads and ws the result of weld metal contractions during solidification.
Reports A test certificate shall be issued. Acceptance specification or Standard, or both.