When physical access is restricted (e.g., inside a long pipe or a toxic environment), remote tools are used.
Verify examiner has current eye exam (pass). Step 2: Measure light at weld surface with meter. Reading: 125 fc (Pass). Step 3: Surface prep: Remove slag and spatter with a chisel and stainless brush. (Pass). Step 4: Inspect weld cap and root. Use a 10x pocket magnifier for the toe of the weld. Step 5: Measure undercut with a bridge cam gauge. Found 0.020" depth. Step 6: Consult acceptance criteria (B31.3, Table 341.3.2). It says undercut > 0.010" is rejectable for severe cyclic service. This is a reject. Step 7: Document on report (Form VT-9) with sketch, lighting value, and gauge serial number. asme section v article 9
A recent and critical update to Article 9 (specifically clause T-940) makes surface preparation mandatory . Before an inspector even begins, the surface must be: Clean and dry. Free from dirt, grease, scale, welding spatter, and flux. When physical access is restricted (e