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- since 1996 -
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Technical Discussions
Juan Amado
Engineering, Inspection
Arco Industrial, S.A., Panama, Joined Nov 2001, 44

Juan Amado

Engineering, Inspection
Arco Industrial, S.A.,
Panama,
Joined Nov 2001
44
12:28 Jul-03-2012
Two questions on API 650 criteria

I'm recently having a discussion on a project where we have a disagreement with a 3rd party inspector on two topics:
1. They are of the opinion that it is mandatory under API 650 for WPS qualification that a Charpy V Notch test be carried out, I think it isn't.
2. They are of the opinion that the welders must be qualified using the same WPS that are to be used for production welding, I think this is not so.
Considering the possibility that I might be wrong on both this issues, I would like to know my colleagues thoughts on them,
thanks,
Juan Amado

 
 Reply 
 
Roger D. Duwe
NDT Inspector, API-510, 570, 653
MISTRAS, USA, Joined Jan 2009, 148

Roger D. Duwe

NDT Inspector, API-510, 570, 653
MISTRAS,
USA,
Joined Jan 2009
148
14:53 Jul-06-2012
Re: Two questions on API 650 criteria
In Reply to Juan Amado at 12:28 Jul-03-2012 (Opening).

You are correct on both items. Charpies on a WPS/PQR are only required *IF* the tank will require impact-tested welding. Generally, this is not a 650 requirement.
The welders can be qualified to ANY procedure that you 'own', assuming that the WPQ the welder earns will cover ranges of all the PERFORMANCE Essential Variables that will be needed to weld the tank.

You might firmly suggest to your 3rd-Party Inspector that he/she obtain an API-653 certification. If he/she is certified, then tell them from me that they urgently need to re-read ASME Sect. IX. It sounds like they may be trying to apply a Code from some other disipline; like shipbuilding, perhaps.
R. Duwe API-653# 32371, API-510# 34679, CWI# 84050111

 
 Reply 
 

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