What we must do to take care of this issue is this: When running a PQR, also run additional repair PQRs. Repair once, twice, thrice..... with WPS conditions and subject welded coupons to mechanical tests (impact mainly) and see at what level you have to stop. Two times repair is just an arbitrary statement, not supported anywhere but what I suggest is from the point of view of a good engineering practice and more reliable.I hope I am not reinventing the wheel !
Comments, please.
Thankfully,
TG
On Thu, Jun 7, 2012 at 10:04 AM, Muthu Samy <jenieragav@gmail.com> wrote:
Dear Vagal,
The repair can be attended for two times only and cut and re weld if repair found again.
Muthusamy@balu--
On 6 June 2012 07:33, Shashank Vagal <nach_sam@yahoo.com> wrote:--
Gents,
A very sensitive issue for most of us, I am sure from time to time, particularly when we are working at site with limited inventories at a given time: How many times can a weld be repaired without impairing its quality? We are facing a cut out of plate butt weld (9% Ni) with no additional plates if required to replace the welded ones if they are condemned.
There was an article some time ago addressing this issue (http://www.twi.co.uk/services/technical-information/faqs/material-faqs/faq-how-many-times-can-a-weld-be-re-weldwed), but unfortunately it seems to have been taken off from TWI site.
Please advise.
Best regards,
Shashank Vagal
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