Monday, May 3, 2010

[MW:5027] Radiographic or ultrasonic testing for Branch weld

Dear All,
 
I have a query regarding application of NDE testing for pipe to pipe, Branch weld connection.
 
As per ASME B31.3 ( for Normal fluid and category M service : to check Internal porosity  ) and  EN 13480 ( category III service  : for DN>100 or Thick >15mm : 10% welds ),
 Branch ( pipe to pipe ) welds needs to be Radiographically/ Ultrasonically ( optional for Thickness > 15 mm as per EN 13480 ) tested.
 
But it is impractical to perform Radiography on Pipe to Pipe weld.
What is the common practise to test these welds and to comply with code requirements ( 31.3 & EN 13480 ) ?
 
Thanking you in advance
 

Kind regards

Rahul

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