Once the procedure is approved it is necessary to demonstrate that all your welders working to it have the required knowledge and skill to put down a clean sound weld. If the welder has satisfactorily completed the procedure test then he is automatically approved but each additional welder must be approved by completing an approval test to an appropriate standard such as ASME Sec IX as follows:
An AWS ATF is a facility which has been accredited by the American Welding Society to perform Welder Tests. Under this program the Welder Performance Qualification Test is witnessed by an authorized CWI of the Accredited Test facility, which then conducts the necessary tests and sends the results to the AWS. If a candidate welder passes the test, a CW (Certified Welder) certificate is then issued directly by the American Welding Society. This program with no prerequisite courses or certifications required. This certification will provide your company and your welders with national recognition.
The Certified Welder (CW) program test to procedures used in the structural, petroleum pipelines, sheet metal and chemical refinery welding industries. Furthermore, there are provisions to certify welders to a specific employer-supplied or non-code welding specification.