After a satisfactory test report, the welder may be employed for production welding (or fabrication welding). Thereafter the final welded test coupon is sent for the Radiography test – RT (or Ultrasonic Test – UT) and Mechanical tests (if applicable, as per the requirements of the code of construction). The welder is asked to weld a test coupon in accordance with the qualified welding procedure specification (WPS), then visual inspection and LPI/MPI (if applicable) are carried out as per the approved procedure. How the performance qualification test is carried out? The welder qualification test (WQT) is performed to determine the skill of a welder, in other words, we can say that the welder performance qualification is carried out to check whether the welder or the welding operator can produce a sound weld or not. It is a very basic but one of the most important steps before assigning a job to the welder. ![]() Welder Performance Qualification (WPQ) is also known as Welder Qualification Test (WQT) or Performance Qualification.
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