This certification enables welders to prove their capability as welders for destructive and non destructive testing procedures. The Testing Procedure involves the welder making a weld that is then tested by an Inspector, to ensure the weld conforms to a particular Code, Standard, or written Welding Procedure Specification. In a typical welding Test or Certification, the welder must weld following a set of written instructions contained in the Welding Procedure Specification (WPS) to produce the Weld Specimen for testing. The test may involve the following steps:

• Ensure the proper safety equipment and welding supplies.
• Set the welding parameters on the welding machine.
• Ensure the appropriate supplies are available.
• Obtain the appropriate supplies and metal pieces to be w