Bruce and Al,
The pipe material is A312 TP312L sch40 and its size is 6 inches. The joints are butt-welded. Furthermore, its a part of a piping system of a petrochemical plant and of all the piping systems in that particular plant its the only system which manifested that kind of problem. I ruled out the possibility of defects in workmanship since a Welding Procedure Specification is in place, the welders are duly qualified by ASME, and the welding engineer in-charge is an experienced guy who has a Masteral Degree in Welding Engineering from an American University. The piping system mentioned above is a newly-constructed piping system and hydrostatically-tested and retested after rectification of leaks but the problem is recurring. The test media is demineralized water.
[Non-text portions of this message have been removed] Received on Tue Jul 13 20:16:00 2004
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