A Welding Procedure Specification (WPS) is the formal written document describing welding procedures, which provides direction to the welder or welding operators for making sound and quality production welds as per the code requirements. The purpose of the document is to guide welders to the accepted procedures so that repeatable and trusted welding techniques are used. A WPS is developed for each material alloy and for each welding type used. Specific codes and/or engineering societies are often the driving force behind the development of a company’s WPS. A WPS is supported by a Procedure Qualification Record (PQR or WPQR) A PQR is a record of a test weld performed and tested (more rigorously) to ensure that the procedure will produce a good weld, Individual welders are certified with a qualification test documented in a Welder Qualification Test Record (WQTR) that shows they have the understanding and demonstrated ability to work within the specified WPS.
Welding Certifications are technically a hands-on welder qualification test that is conducted by certified welding inspector that will determine if the person or machine can produce a sound quality weld up to the code or welding procedure needed for a Company job site or a particular industry standard
Welding certifications are designed to ensure the wilders skills are up to the code they will be working under Welding certifications are also documented to prove that the welder is qualified under that code Welding codes vary a lot depending on the type of work being done. There are many organizations that have different procedures depending on the type of work they oversee
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