Do tack welders have to be qualified?

Do tack welders have to be qualified?

• A. Yes, tack welders must be qualified.
• B. No, tack welders are exempt from qualification.
• C. Only for fillet welds.
• D. Only if required by contract.

Answer: (A)

The main idea is that welder qualification covers any welding performed by a welder using a given process. Tack welding uses the same process and directly influences the fit-up and the eventual weld quality, so it falls under the same qualification requirements. If a welder places tack welds, they must be qualified for that process and position to ensure the tissue of the joint isn’t compromised and that the final weld will meet the standard. It isn’t an exemption, it isn’t limited to fillet welds, and it isn’t only required if a contract says so—the qualification demonstrates the welder’s ability to produce acceptable welds with the process used on the joint, including tacks.

The main idea is that welder qualification covers any welding performed by a welder using a given process. Tack welding uses the same process and directly influences the fit-up and the eventual weld quality, so it falls under the same qualification requirements. If a welder places tack welds, they must be qualified for that process and position to ensure the tissue of the joint isn’t compromised and that the final weld will meet the standard. It isn’t an exemption, it isn’t limited to fillet welds, and it isn’t only required if a contract says so—the qualification demonstrates the welder’s ability to produce acceptable welds with the process used on the joint, including tacks.