The absence of guidance or requirements is not to be considered prohibitive to a particular activity or approach that is based upon sound engineering judgment. While API 1104 is comprehensive, it may not address all issues that may arise. It is intended that all work performed in accordance with this standard meets or exceeds the requirements of this standard. The figures depicted in this standard are not drawn to scale. Each system is to be used independently of the other, without combining values in any way. customary units (USC) or metric units (SI) are to be regarded separately as standard. The welds may be produced by position or roll welding or by a combination of position and roll welding.ĪPI 1104 also covers the procedures for radiographic, magnetic particle, liquid penetrant, and ultrasonic testing, as well as the acceptance standards to be applied to production welds tested to destruction or inspected by radiographic, magnetic particle, liquid penetrant, ultrasonic, and visual testing methods. The welding may be done by a shielded metal arc welding, submerged arc welding, gas tungsten arc welding, gas metal arc welding, flux-cored arc welding, plasma arc welding, or oxyacetylene welding process, or by a combination of these processes using a manual, semiautomatic, or mechanized welding technique or a combination of these techniques.
It applies to both new construction and in-service welding. This standard covers the gas and arc welding of butt, branch, and fillet welds in carbon and low-alloy steel pipe and piping components used in the compression, pumping, and transmission of crude petroleum, petroleum products, fuel gases, carbon dioxide, nitrogen, and, where applicable, covers welding on distribution systems.
API 1104, 22nd Edition – Welding of Pipelines and Related Facilities, 22nd Edition
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