Welders must be qualified to compliant Welding Procedures that are applied to a task, or to a welded item of plant. Welder Qualification is an essential compliance element examined in Quality Assurance Welding, providing evidence that the welder is qualified to undertake a specific task. Welder Qualification Testing (WQT) is dependent on many technical compliance details and as a result, many different WQT records are required across the industry. People are often confused by the difference between Welder Qualification, and Welder Certification.