nozzle to head weld NDE

[ird192]

we will be adding 2-4" nozzle to a vessel head ,head thickness 3/8" , schedule 40 SA 240 316L nozzles , vessel operates @ 40 psi , 300 F with full vac. looking at UW-3 these would be D type joints , the weld joint will be UW 16.1 detail d (full penetration ) based on UW 11 & 12 " Extent of radiographic is NA , the customer thinks maybe RT , we offered visual PT root, interpass , and cap .comments

 

[r6155]

RT can be done but it is difficult to evaluate.

Regards

 

[ird192]

I think I posed the question incorrectly we do not think RT is a code requirement for this joint , its the customer who is asking and we're saying no by referencing the code , I guess I'm looking for some conformation that I'm interpreting the code correctly. I've been around RT for years and your correct these would be difficult images to read , as well a time consuming and costly

 

[r6155]

I'm trying to keep it simple.
The NA for the D category joint (corner joint) is to define the efficiency of the E joint.
You can do UT for the corner joint. Block calibration is difficult and not useful for this example.
The PT is not a volumetric test.
Please see table UW-12