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- since 1996 -

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Technical Discussions
Tony smith
Tony smith
12:41 Nov-18-2009
ut info

I am trying to figure out what angle wedges are needed for inspection.
First this will be addressed on a spiral pipe. 42' x .600 wall The weld
is double submerge arc v weld. The L.C.P. is 5 to 6 1/2mm. bevel angle
is 40 degrees top and bottom of L.C.P.

    
 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 822

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
822
15:12 Nov-18-2009
Re: ut info
In Reply to Tony smith at 12:41 Nov-18-2009 (Opening).

Tony,

The Shear Wave angle is mainly decided by the code you are doing your inspection to. From personnel experience, when I was inspecting SAW welds on steam generators with a wall thickness of 2 - 2.5 inches, we were using a LW for delaminations and then a 45 and a 60 degree Shear Wave.

Another example is Canadian Standard W59 and American D1.1. For a Double V Butt Weld of 0.6 inches in thickness, these codes dictates a Shear Wave of 70 degree for inspection.

But like I said previously, it all depend on the code that you are working too.

    
 
 

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