In general to decide Production coupan plate requirement procedure are
PTC requirement mention in UG-84 and those requirement are further waived for specific material in relevant subsection of the code i.e. UCS- 67, UHA 51, UHT-87
and if welding procedure required impact test then it not mandatorily required PTC in all case.
For easy interpretation of UHA-51 for impact test requirement refer Non Mandatory appendix JJ of ASME Sec VIII Div.1
In your case if considering Welding by GTAW , SMAW or SAW
Impact test for Base Material & HAZ : Not Required
Pre qualification of filler material : Required
Impact test for WPS qualification: Required.
Production test coupan : Not required
Best Regards
Rajesh Patel
Executive Engineer - Materials Technology, QA/QC & Standards
From: Vijay Katkar <katkar.vijay22@gmail.com>
To: materials-welding@googlegroups.com
Date: 24/11/11 21:59
Subject: Re: [MW:13046] PTC Requirement for S.S.
Sent by: materials-welding@googlegroups.com
Dear Rajesh,
My confusion, impact test is required for welding procedure qualification as per UHA-51(e) and weld metal (UHA-51f) also. Only base metal and HAZ is exampted as per UHA-51. if welding procedure required impact test then we need to have PTC for the job as per UHA-51 h..
Am i right or UHA-51 saying somthing different. please confirm...
Regards
Vijay Katkar
On Thu, Nov 24, 2011 at 6:41 AM, <Rajesh.Patel@linde-le.com> wrote:
Dear Vijay
If welding is performed with the use of filler material up -196 deg C, Production Test Coupan is not required.
for PTC requirements refer UHA 51 h
Best Regards
Rajesh Patel
Executive Engineer - Materials Technology, QA/QC & Standards
From: Vijay Katkar <katkar.vijay22@gmail.com>
To: materials-welding@googlegroups.com
Date: 23-11-11 21:44
Subject: [MW:13040] PTC Requirement for S.S.
Sent by: materials-welding@googlegroups.com
Dear All,
I have one vessel with M.D.M.T -140 Degree C. for base metal (SA 240 TP 304) impact test is exampted as per UHA 51 Of ASME section VIII Division- 1 but consumable and procedure qualification impact test is required as UHA-51 ,
PTC is required for vessel with above condition, please advice .........
Regards
Vijay Katkar
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