AWS Certified Welding Inspector — FundamentalsNondestructive Examination (NDE)Easy
A CWI is preparing to perform a visual inspection (VT) on a newly welded pressure vessel. According to common welding codes and standards, which of the following tools is essential for assessing the size of fillet welds?
- ADial indicator
- BMicrometer
- CFillet weld gauge
- DDigital caliper
Show answer & explanationAnswer & explanation
Correct answer: C. Fillet weld gauge
A fillet weld gauge is specifically designed with various profiles and measurements to quickly and accurately assess the leg length, throat thickness, and convexity/concavity of fillet welds, making it an essential tool for VT of such welds. Micrometers, dial indicators, and digital calipers are general measurement tools but not specialized for fillet weld profiles.
Why the other options are wrong
- A. A dial indicator is used for measuring small linear displacements or runout, not weld dimensions.
- B. A micrometer is used for precise measurements of small dimensions, not typically for weld profiles.
- D. A digital caliper can measure linear dimensions but is not as efficient or accurate as a specialized fillet weld gauge for profile assessment.
Fillet Weld Gauge
A specialized tool used in visual inspection to measure the size, leg length, and throat thickness of fillet welds, and to check for excessive convexity or concavity.
- Contains various blades or profiles to match weld contours.
- Essential for verifying compliance with weld size specifications.
- Quick and easy to use on the shop floor.
Memory trick: Fillet needs a gauge, general needs a rule, cracks need a magnifier.