RE: [MW:8917] Problem of PWHT

Generally Impulse lines are outside scope of ASME B31.3 and don't require PWHT. Even if it is designed by B31.3 it doesn't require PWHT as thicknesses low, , unless it is a contractual requirement

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of vivek m
Sent: Thursday, December 23, 2010 9:34 PM
To: materials-welding@googlegroups.com
Subject: [MW:8914] Problem of PWHT

Dear all,
one of my P11 impulse pipe (0.75") is connected to a CS 0.75" valve
which comes with big bore CS line (all as per drawing)......now shall
i do pwht to that joint ? If done will there be any problem to that
joint ...please give me a detailed answer.

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