This standard 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 application of requirements contained in many industry codes and standards requires some interpretation by the user and by the regulator who is called upon to enforce their use. API 1104 20th Edition Section 7 Design & Prep of a Joint for Production Welding 7.1 General, Piping shall be welded by qualified welders using qualified procedures 7.2 Alignment, Not to exceed 1/8 inch driven by qualified procedure 7. The welds may be produced by position and roll welding. free of cracks, inadequate penetration, burn-through. Through use of these consensus standards, pipeline operators will be able to use current technology, materials, and practices. It applies to both new construction and in-service welding.The welding may be done by a shielded metal-arc welding, gas metal arc welding, flux-cored arc welding, plasma arc welding, oxyacetylene welding, or flash butt welding process or by a combinaion of these processes using a manual, semiautomatic, mechanized, or automatic welding technique or a combination of these techinques. This direct final rule adopts the most recent editions of two consensus technical standards, the American Petroleum Institute (API) 5L (44th edition) and API 1104 (20th edition).

This standard covers the gas and arc welding of butt, fillet, and socket welds in carbon and low-alloy steel piping 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 20th edition free download