SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
(OP)
SA 106 B PIPE 1" sh 40 Welded with flange 300# RFSO , whole vessel goes for P.W.H.T , DO I NEED PWHT welding procedure for pipe welding to flange.
Regards
stanly
Regards
stanly





RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
twothree ways.If this happens to be a Section VIII Div. 1 vessel, then I find it interesting that we have carbon steel with, apparently, zero corrosion allowance being used. Makes a poor design even worse.
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
General Blr. CA,USA
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
If yes then you should write a fillet weld WPS with PWHT based on that PQR for the flange to pipe weld.
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
Interested in your response
" No addl procedure required if part of the vessel. I will not comment on the design."
If he has used a fillet weld WPS without PWHT and addition of PWHT is an essential variable then surely the weld is unqualified once it has been heat treated ?
I cannot understand what being part of the vessel has to do with it ?
Cheers,
Shane
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
Everyone seems to be in agreement that the design (or lack of) is a problem.
I was just focusing on the original question from the OP and it is probably too late to change anything now,
Cheers,
Shane
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
I was not responding to your post so there is no need to drag my name into it. There is only one poster who questions the "design". The basic fact is you should never use 1"nb Sch40 CS branches on anything since structurally the branch is not sound!!!!
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
I assume that you intend to PWHT or have already performed PWHT on the vessel without welding the flange to the 1" nozzle. You may do so without additional PWHT of that weld unless PWHT is a requirement for service.
ypu
RE: SA 106 B PIPE 1" sh 40 Welded with flange 300# rfso
General Blr. CA,USA