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Technical Discussions
anjafo
NDT Inspector
Norway, Joined Aug 2009, 204

anjafo

NDT Inspector
Norway,
Joined Aug 2009
204
21:58 Aug-15-2009
hammer union (weco/fig) inspection

Hi,

Is there a recognised standard that deals with these? API etc...

We perform fluorescent MPI but only on the male connection.
The female connections receives a visual.
The body sometimes receives a wall thickness check (on the more corroded items)
The customer has go or no go gauges but I don't think they it unless mechanical damage is noted.

Can anyone more knowlageble on these items elaborate?

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

Roger Duwe

NDT Inspector, API-510, 570, 653
MISTRAS,
USA,
Joined Jan 2009
148
02:56 Aug-17-2009
Re: hammer union (weco/fig) inspection
In Reply to anjafo at 21:58 Aug-15-2009 (Opening).

Being a high-reliability pressure part, I would hydrostatically test them, to at least the manufacturer's full rated pressure. My preference would be 1.5 times rated pressure. Make sure ALL air is purged before pressuring up, stay well back, etc.

 
 Reply 
 
anjafo
NDT Inspector
Norway, Joined Aug 2009, 204

anjafo

NDT Inspector
Norway,
Joined Aug 2009
204
13:22 Aug-17-2009
Re: hammer union (weco/fig) inspection
In Reply to Roger Duwe at 02:56 Aug-17-2009 .

Yes they will probably be pressure tested also.

On more investigation I think API 6 cover these sort of items as christmas tree / wellhead items. Loose Connectors, Flaged and threaded. Its a huge spec though covering many things though.

Hardness test is required on all new welds.

I think I will use this as the spec unless advised otherwise.

 
 Reply 
 
Mike Cornelssen
Mike Cornelssen
17:26 Sep-30-2009
Re: hammer union (weco/fig) inspection
In Reply to anjafo at 13:22 Aug-17-2009 .

The WECO union is not recognized in API as a standard. This union is a proprietary design used by many oilfield service companies. Using API 6A as a NDE guideline and hydro guideline would be a good approach.

The biggest concern with these is the possible mis-connection assy using lower pressure rated components with the higher rated components. There are some possible connections that combine these....so be aware. I believe there is info on the web describing such.

 
 Reply 
 

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