What determines whether a welder's retest after a failed qualification is acceptable under W47.1?

• A. The retest must meet the same success criteria as the original qualification
• B. The retest can have relaxed criteria
• C. The retest is not required
• D. The retest only covers new materials

Answer: (A)

When a welder fails, any retest must prove the same level of competence as the original qualification. Under W47.1, the retest is acceptable only if it meets the same success criteria used for the initial qualification. This means the welder must perform the same weld type and process, work with the same materials and thickness range, demonstrate the same welding positions, and meet the same acceptance criteria (including any required nondestructive testing). Keeping the criteria consistent ensures that the retested welder truly demonstrates equivalent skill and produces welds that meet the established quality standards.

Relaxing criteria would undermine safety and quality, which is why a retest isn’t allowed to use looser standards. The retest is required after a failed qualification, and it should cover the same scope rather than just new materials, so the welder’s overall capability is verified against the original benchmark.