Piping shall be welded by which of the following?

The selection of qualified welders and qualified procedures is critical in ensuring that welding operations meet the necessary standards and specifications outlined in API 1104. Qualified welders are those who have demonstrated their ability to perform welding tasks in accordance with established procedures and tests. This qualification is essential for maintaining the integrity and safety of the welded joints in pipelines.

Moreover, having qualified procedures ensures that the methods and techniques used during the welding process meet industry standards. These procedures provide guidance on variables such as welding techniques, joint preparation, filler materials, and post-weld heat treatment, all of which are crucial for producing sound welds.

Together, the combination of qualified welders and qualified procedures establishes a reliable framework for achieving high-quality welds, minimizing defects and ensuring compliance with regulatory requirements. This approach is a key part of welding best practices, particularly in critical applications such as pipelines where safety and reliability are paramount.