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RT issue as per API 1104

RT issue as per API 1104

Postby smart22ash » Mon Apr 14, 2014 3:50 pm

Dear Experts,
Could you please explain me the acceptance criteria for RT in API 1104. The scenario is: we found slag in welding of 18" x 23.8 mm thickness API 5L X65 LSAW pipes during SMAW welding (we cut the pipe in between and welded again for Marker Purpose in subsea). We found slag (ISI) in X-ray which is more than 13 mm aggregate. Now the problem is weather we have to accept it or repair it because there are 2 statements in API 1104. The one is aggregate 13 mm in 300 mm length not accepted and the second one is maximum 8% overall circumferential area accepted. So, which statement we have to consider? As per the first statement it is repair and as per the second statement it is accepted.
Please advice.
smart22ash
 
Posts: 10
Joined: Fri Sep 06, 2013 6:52 am

Re: RT issue as per API 1104

Postby Ballbearing » Tue Apr 15, 2014 8:27 am

smart22ash,
9.3.8.2 For pipe with an outside diameter greater than or
equal to 2.375 in. (60.3 mm), slag inclusions shall be considered
a defect should any of the following conditions exist:

If the ISI does not comply with the 13 mm requirement then the 8% requirement is irrelevant,
Regards,
BB
Ballbearing
 
Posts: 76
Joined: Wed Jun 12, 2013 10:11 pm


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