Which of the following require a certification signature and date?

The correct answer regarding the requirement for a certification signature and date is the combination of PQR (Procedure Qualification Record) and WPQ (Welder Performance Qualification).

PQR is a critical document that verifies that a welding procedure produces welds that meet the required standards. It is necessary for establishing the parameters and materials used in the welding process. A certification signature and date are required on the PQR to verify that it has been reviewed and approved by a qualified individual. This ensures that the procedure is recognized as valid and compliant with applicable codes and standards.

Similarly, WPQ is a record that demonstrates that a welder can make welds that meet the essential variables of the qualified welding procedure. Like the PQR, the WPQ also requires a signature and date from an authorized representative to confirm that the welder has successfully performed under the specified conditions and meets the qualification standards.

The combination of these documentations being signed and dated provides accountability and acknowledgment of compliance for both the welding procedure and the welder’s abilities. This is imperative for maintaining quality control and adherence to industry standards.