1309.10 Inspection of Brazed Joints
- Flux or flux residue (when flux or flux-coated BAg series rods are used with dissimilar metals).
- Base metal melting or erosion.
- Unmelted filler metal.
- Failure of the filler metal to be clearly visible all the way around the joint at the interface between the socket and the tube.
- Cracks in the tube or component.
- Cracks in the braze filler metal.
- Failure of the joint to hold the test pressure under the installer-performed initial pressure test (see Section 1318.5, Section 1318.6 or Section 1318.7) and standing pressure test (see Section 1318.9, Section 1318.10 or Section 1318.13). [NFPA 99:184.108.40.206.7.4]
Brazed joints that are identified as defective under the conditions of Section 1309.10.3(1), 1309.10.3(3), 1309.10.3(4), 1309.10.3(6) or 1309.10.3(7) shall be permitted to be repaired, except that no joint shall be reheated more than once before being replaced. [NFPA 99:220.127.116.11.7.5, 18.104.22.168.7.6]