1309.10 Inspection of Brazed Joints. After brazing, the

outside of all joints shall be cleaned by washing with water and a wire brush to remove any residue and allow clear visual inspection of the joint. [NFPA 99:5.1.10.4.7.1]

1309.10.1 Where Flux is Used. Where flux has been used, the wash water shall be hot. [NFPA 99:5.1.10.4.7.2] 1309.10.2 Visually Inspected. Each brazed joint shall be visually inspected after cleaning the outside surfaces.

[NFPA 99:5.1.10.4.7.3] 1309.10.3 Prohibited Brazed Joints. Joints exhibiting the following conditions shall not be permitted: (1) Flux or flux residue (when flux or flux-coated BAg

series rods are used with dissimilar metals).

« «

«

(1) Each joint in the final connection between the new

work and the existing system shall be leak-tested with the gas of system designation at the normal operating pressure by means of a leak detectant that is safe for use with oxygen and does not contain ammonia. [NFPA 99:5.1.12.3.9.2] (2) Vacuum joints shall be tested using an ultrasonic

leak detector or other means that will allow detection

(1) Flux or flux residue (when flux or flux-coated BAg

series rods are used with dissimilar metals). (2) Base metal melting or erosion. (3) Unmelted filler metal. (4) Failure of the filler metal to be clearly visible all the

way around the joint at the interface between the

(2) Vacuum joints shall be tested using an ultrasonic

leak detector or other means that will allow detection of leaks in an active vacuum system. [NFPA 99:5.1.12.3.9.3] (3) For pressure gases, immediately after the final

brazed connection is made and leak-tested, an outlet

(4) Failure of the filler metal to be clearly visible all the

way around the joint at the interface between the socket and the tube. (5) Cracks in the tube or component. (6) Cracks in the braze filler metal. (7) Failure of the joint to hold the test pressure under the

installer-performed initial pressure test (see Section

(3) For pressure gases, immediately after the final

brazed connection is made and leak-tested, an outlet in the new piping and an outlet in the existing piping that are immediately downstream from the point or area of intrusion shall be purged in accordance with the applicable requirements of Section 1309.8.9(4). [NFPA 99:5.1.12.3.9.4] (4) In order to remove any traces of particulate matter

deposited in the pipelines as a result of construction,

(4) In order to remove any traces of particulate matter

deposited in the pipelines as a result of construction, a heavy, intermittent purging of the pipeline shall be done. [NFPA 99:5.1.12.3.6] (5) Before the new work is used for patient care, positive

pressure gases shall be tested for operational pressure

(5) Before the new work is used for patient care, positive

pressure gases shall be tested for operational pressure and gas concentration in accordance with Section 1318.14 and Section 1318.15. [NFPA 99:5.1.12.3.9.5] (6) Permanent records of these tests shall be maintained

in accordance with NFPA 99. [NFPA 99:5.12.3.9.6]

(7) 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 99:5.1.10.4.7.4] 1309.10.4 Defective Brazed Joints. Brazed joints that are identified as defective under the conditions of Section 1309.10.3(2) or Section 1309.10.3(5) shall be replaced. 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 99:5.1.10.4.7.5, 5.1.10.4.7.6]