I'm not sure what API says about welding procedures but most
specifications apply same rules for repair procedures as for standard
Procedure Qualifications.
This means that the change from downhill (5GD) to uphill (5GU) is an
essential variable this means you have to re-qualify when changing
welding position.
Because you are using similar filler metal for the hot pass you may
use the first qualification for that if the difference in Heat Input
for the hot pass does not exceeds the limit specified in the API.
Most regulations specify max. allowed differences of +/- 15 %
An other problem is the use of an other fillermetal for fill passes as
in the repair procedure you qualified. I don't know the API 1104 and
therefore i'm not sure if this is a separate group for API, if so than
you have to re-qualify for this reason as well.
Best Regards,
Herman Pieper
On 12 feb, 10:06, N S Babu <sudheerba...@gmail.com> wrote:
> Dear All,
> In our our Pipeline Project in Kazakhstan, As we have problem in
> procuring Welding consumables from one manufacturer we had to qualify
> to Welding procedures 20" Mainline welding.
>
> The first procedure is with E 6010 root and balance pases with E 8018G
> (all downhill) we have also seprate repair procedure with only change
> being E 6010 with uphill process.
>
> Also we have qualified another procedure with E 6010 for root and Hot
> pass (Down hill) and E 7016 uphill for balance passes.
>
> Please advice if we need to qualify another repair procedure for our
> second procedure or we can use the first repair procedure for all
> repairs.
>
> Regards
>
> S Babu
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