A size of discontinuity which is not accepted by code/standard.
Published in Chapter:
An Overview of Welding Methods for Advanced Materials: Testing and Evaluation
Thiraviam Rayapandi (PT Saipem Indonesia, India) and Suresh P. (Muthayammal Engineering College, India)
Copyright: © 2022
|Pages: 28
DOI: 10.4018/978-1-7998-9574-9.ch012
Abstract
Recent developments in the engineering industry require joining of like and unlike materials with different properties such as melting point, coefficient of thermal conductivity, solubility, difference in electrochemistry, etc. as part of machines, tools, and more specific applications. Materials including those similar and dissimilar in nature are successfully joined by fusion and solid-state welding processes. In accordance with ASME Sec IX and AWS D1.1 codes and API 1104 standard, welding procedures specifications (WPS) through procedure qualifications (PQR) are required prior to commencing any fabrication work pertaining to pressure vessels, piping and pipeline, storage tanks, offshore platform structural parts, and so on. A specific welding process must be chosen based on the design of the component, the material, thickness, production, availability of equipment, people, and other factors. Weldment testing, including destructive and non-destructive examinations, are crucial during procedure qualification, welder qualification, and the production welding process.