AS 2885 Pipelines - Gas and liquid petroleum

ir_71 · (This post was last modified: 01-17-2011, 09:47 AM by ir_71.)

This Standard specifies requirements for design and construction of carbon and carbonmanganese
steel pipelines and associated piping and components that are used to transmit
single-phase and multi-phase hydrocarbon fluids, such as natural and manufactured gas,
liquefied petroleum gas, natural gasoline, crude oil, natural gas liquids and liquid petroleum
products.
The principles are expressed in practical rules and guidelines for use by competent persons.
The fundamental principles and the practical rules and guidelines set out in AS 2885.1,
AS 2885.2, AS 2885.3 and AS 2885.5 are the basis on which an engineering assessment is
to be made where these Standards do not provide detailed requirements appropriate to a
specific item.
NOTE: AS 2885.4 for offshore submarine pipeline systems is a standalone document.

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This Standard specifies the minimum requirements for materials, welding consumables,
welding processes, weld preparations, qualifications of welding procedures and personnel,
and fabrication and inspection requirements for the construction and maintenance welding
of carbon and carbon-manganese steel pipelines down to 3.2 mm wall thickness designed
and constructed in accordance with AS 2885.1. The welding of corrosion-resistant alloy
steel pipelines, or pipelines with wall thickness less than 3.2 mm, is not precluded but is not
expressly covered by this Standard. The welding of such pipelines has to be given special
consideration.
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 welds
may be produced by position or roll welding or by a combination of position and roll
welding.
Other processes may be submitted for inclusion in the Standard upon provision of the
following information:
(a) A description of the welding process.
(b) A proposal on the essential variables.
© A typical welding procedure qualification record and a welding procedure
specification.
(d) Weld inspection methods.
(e) Types of weld discontinuities and their proposed acceptance limits.
(f) Repair procedures.
This Standard is applicable to the welding of joints in or on pipelines, and the field welding
of pipeline assemblies. This Standard may be applied to the factory fabrication of pipeline
assemblies manufactured from pipes and fittings. See Figure 1.1 for examples.
NOTE: The welding of fittings may present special difficulties when using typical pipeline
welding procedures (see Appendix E).

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This Standard specifies the minimum requirements for the operation and maintenance of
pipelines complying with AS 2885.1 and AS 2885.2.

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