AWS Certified Welding Inspector — FundamentalsInspector Duties and ResponsibilitiesMedium
A CWI is reviewing the NDT reports for a series of butt welds on a structural frame. The reports indicate that several welds contain 'linear indications' that were removed by grinding and subsequently re-welded. The CWI needs to ensure proper documentation of these repairs. What is the most critical item that should be documented regarding the repair of these linear indications?
- AVerification that the defect was completely removed prior to re-welding and re-inspected after repair.
- BThe atmospheric conditions (temperature, humidity) during the repair welding.
- CThe type of grinding wheel used for defect removal.
- DThe welder's experience level who performed the repair.
Show answer & explanationAnswer & explanation
Correct answer: A. Verification that the defect was completely removed prior to re-welding and re-inspected after repair.
The most critical aspect of any weld repair is ensuring that the original defect was entirely removed before re-welding and that the repair itself is sound and free of new defects. This requires intermediate inspection after defect removal and final inspection after repair to ensure compliance with the WPS and code.
Why the other options are wrong
- B. Atmospheric conditions are important for welding, but verifying defect removal and repair quality is more critical for documentation.
- C. The type of grinding wheel is generally not a critical documentation requirement for repair, as long as proper techniques are used.
- D. The welder's experience is important for initial qualification, but not the most critical documentation for a specific repair.
Weld Repair Documentation
Thorough documentation of weld repairs must confirm that the original defect was completely removed, that the repair welding was performed to a qualified procedure, and that the repaired area was subsequently re-inspected and found acceptable.
- Ensures defect eradication before re-welding.
- Verifies quality of the repair itself.
- Critical for traceability and structural integrity.
Memory trick: Defect gone, repair done, quality won.