Monday, May 22, 2023

Re: [MW:34232] SS GTAW Welding without Back purging.

Hi Mr. Vishwas Keskar,

Single Vee butt weld  - Root/Hot/fill/cap-  full GTAW

pipe OD -33.4 mm

On Mon, May 22, 2023 at 7:47 AM Vishwas Keskar <vvkeskar123@gmail.com> wrote:
Are you intending to qualify PQR in 
Single Vee butt weld - No welding from Root side ?
Double Side Weld with back grinding DPT from root side ?
This will decide the PQR  purging requirement

Thanks

Vishwas
IWE 


Sent from my iPhone

On 22-May-2023, at 8:40 AM, Anand Elankumaran <email2uranand@gmail.com> wrote:


Dear experts,

Could you please check and advise the below query.

  • Whether the back purging is a quality requirement or the ASME code is insisting on back purging on SS material while doing the GTAW process.
  • Whether we can qualify SS -GTAW PQR without back purging or the ASME code does not allow doing PQR for austenitic steels without a back purge?
  • Kindly advise how to do it without purging in SS GTAW Welding . Planning for PQR as well 


--
Thanks and Regards,
E. Anand,
Lead QA-QC,
Sohar,
Oman.

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--
Thanks and Regards,
E. Anand,
Lead QA-QC,
Sohar,
Oman.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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