Monday, October 4, 2010

[MW:7346] Welding procedure qualification for Hot tap

Can anybody tell me which are the variables to take in account in order to qualify a WPS for hot tap?, I mean, is it just diameter, thickness, material spec., ?, or do I have to take account temperature, flow, fliud characteristics?
 
Another question is:  Can I use a old WPS for HT used in other projects?


Eduardo Calva



 
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