What typically characterizes a Procedure Qualification Test?

A Procedure Qualification Test is characterized by the requirement that a sample weld be created and tested according to established codes and standards. This test ensures that a specific welding procedure can produce welds that meet the mechanical and metallurgical properties necessary for the intended application. The process involves not only the welding itself but also rigorous examination and testing of the resulting weld joint, typically conducted by an independent agency to ensure impartiality and adherence to relevant standards.

This approach is crucial for establishing a reliable welding procedure before it is implemented in production. The focus on independent testing highlights the importance of maintaining high-quality standards and ensures that the procedures are effective and compliant with necessary regulations. Thus, this attribute distinctly characterizes the Procedure Qualification Test compared to the other choices, which focus on different aspects of welding or the welder's qualifications.