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§192.715 — Transmission lines: Permanent field repair of welds

Each weld that is unacceptable under §192.241(c) must be repaired as follows:

 
(a)
If it is feasible to take the segment of transmission line out of service, the weld must be repaired in accordance with the applicable requirements of §192.245.
 
(b)
A weld may be repaired in accordance with §192.245 while the segment of transmission line is in service if:
 
(1)
The weld is not leaking;
 
(2)
The pressure in the segment is reduced so that it does not produce a stress that is more than 20 percent of the SMYS of the pipe; and
 
(3)
Grinding of the defective area can be limited so that at least 1/8-inch (3.2 millimeters) thickness in the pipe weld remains.
 
(c)
A defective weld which cannot be repaired in accordance with paragraph (a) or (b) of this section must be repaired by installing a full encirclement welded split sleeve of appropriate design.

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37504, July 13, 1998]

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