Dear All,
In the asme 31.3 table 331.1.3 exemption to mandatory PWHT. Mentioned that For P5A, group no.1- less than or equal to 16mm thickness -groove-Mandatory pre-heat is applied (see attached file for details) is exempted to PWHT.
Our project:
We have tie-in activity the existing pipe...
Dear All,
Greetings,
We are preparing a WPS with dissimilar base metal A240 gr. 321H and A516 gr. 70, Instead of using this two material specification. Can we use a312 gr. 321H and A106 gr.C. for PQR.
Thank you.
Dear All,
I'm not expert in welding, Our submitted WPS/PQR got rejected by the client the reason is that the P-Number in WPS is not same with the PQR. WPS is P5A to P1 and the supporting PQR is P5A to P4.
From ASME SEC IX 2017: Qw-424.1 ''base metal used for Qualification: One metal from P-No...
Dear All,
I am facing problem. Our flange got rejected by the client. Our flange (RTJ, CL1500) will be connected to equipment nozzle which having FN FLANGE RTJ Cl1500, what is the difference between this two.
Thanks in advance.
mulz
Dear All
We are involved in a piping project, our scope is to replaced existing chilled ammonia LTCS pipe with SS 304 pipe. The client required to do PWHT on the new piping.
We have existing WPS but no PWHT. If we add the PWHT,is there any changes in the essential and non-essential variables...
Dear,
What is the pre-heating temperature in the latest edition of asme b31.3 coz we are dealing with welding of piping whose diameter is 16'',cs, sch.80..
Thanks
mulz
Dear all,
I'm involved in a pipeline project, the pipe/fitting materials are carbon steel (A106 gr.b/A234 gr.wpb) 16'' dia.,sch.80.(21.44mm).We have approved WPS,the pre-heat temperature mention in the procedure is 80 deg.C.The client QC advice us that follow the latest edition of ASME SECTION...
