I believe I misunderstood your query. When mentioning "post heat," I believe you should be referred to "preheat maintenance." If so, this is a nonessential variable in most weld processes and is not needed in order to qualify weld procedures per ASME IX. Although, not to say that the code of construction doesn't require preheat maintenance. Refer to ASME IX per weld process used and the code of construction for which the fabrication was designed under.
QW-406.2 A change in the maintenance or reduction of preheat upon completion of welding prior to any required postweld heat treatment.
In closing, if pre-heat maintenance was utilized prior to any required post weld heat treatment, then simply list the method used. If pre-heat maintenance was not utilized prior to any required postweld heat treatment, then simply state "NONE," considering if the variable is listed as "nonessential," in accordance with the weld process used during qualification. (Ambient room temperature can also be noted as well, in place of "NONE" if that is the case. Cheers.......
On Mon, Oct 26, 2020 at 7:53 PM NIKHIL THOMAS JOY <nikhil.thomasjoy@gmail.com> wrote:
Mr.Udaya bhaskar,Sir, QW-407 Gives description about PWHT. There is no mention about post heating or DHT.BEST REGARDS,NIKHIL THOMAS JOYIWI LIMITEDADNOC-WHRP0544975526--On Mon, Oct 26, 2020 at 1:06 PM udaya bhaskar <dusroni@gmail.com> wrote:FYI,CheckQW-407On Sat, Oct 24, 2020 at 5:06 PM NIKHIL THOMAS JOY <nikhil.thomasjoy@gmail.com> wrote:Dear friends,Greetings of the day,I would like to check the post heating details for pipe welded joints for alloy materials.Please share in which code its available to refer.My main concern , there is any need to mention post heating in wps or pqr.if yes, in which code its mention.Waiting for experts advice.--
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----With RegardsUdaya bahaskar.D+919676270121
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Jamie Reyes
J.R. Machine Company, Inc.
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