AWS Certified Welding Inspector — FundamentalsInspector Duties and ResponsibilitiesEasy
A CWI is conducting a pre-weld inspection on a structural steel project. The welding procedure specification (WPS) calls for a specific joint design with a root opening of 1/8 inch (3.2 mm). The CWI measures the root opening of a prepared joint and finds it to be 3/16 inch (4.8 mm). What is the CWI's immediate responsibility?
- AApprove the joint for welding, as the difference is minor and within acceptable tolerance for most structural applications.
- BDocument the discrepancy and allow welding to proceed, noting that a non-conformance report will be issued later.
- CReject the joint and require adjustment to meet the WPS specifications before welding proceeds.
- DConsult with the welder to determine if they can compensate for the larger root opening during welding.
Show answer & explanationAnswer & explanation
Correct answer: C. Reject the joint and require adjustment to meet the WPS specifications before welding proceeds.
The CWI's primary responsibility is to ensure compliance with the WPS. A deviation from the specified root opening, even if seemingly small, can significantly impact weld quality and mechanical properties. Therefore, the joint must be brought into compliance before welding.
Why the other options are wrong
- A. Approving a non-compliant joint is a breach of CWI duties and can lead to unacceptable weld quality.
- B. Allowing welding to proceed on a non-compliant joint is a failure of immediate inspection responsibility.
- D. Consulting the welder does not negate the requirement for WPS compliance; the joint must be correct.
Pre-Weld Joint Inspection
A critical CWI responsibility to verify that joint preparation, fit-up, and dimensions comply with the Welding Procedure Specification (WPS) before welding begins.
- Ensures proper fusion and penetration.
- Prevents defects like lack of fusion or excessive distortion.
- Includes checking root opening, groove angle, and alignment.
Memory trick: Joint Dimensions Must Align Perfectly with WPS.