Re: [MW:26174] Fwd: Welder qualification test piece - examination length

if it for ASMEBPV IX, read, QW 302.2: the minimum length of coupon(s) to be examined shall be 6 in. (150 mm) and shall include the entire weld circumference for pipe(s), except that for small diameter pipe, multiple coupons of the same diameter pipe may be required, but the  number need not exceed four consecutively made test coupons. 

---------- Forwarded message ----------
From: chiluka venkatramulu <ramuluchiluka@gmail.com>
Date: Thu, Mar 9, 2017 at 4:54 PM
Subject: Welder qualifications
To: materials-welding <materials-welding@googlegroup.com>

Dear all,

When we qualify welder for performance qualification by NDT we need to take RT-150mm. My quarry is, if we need to qualify 1/2" pipe for diameter qualification, whether we need to weld 3 piece to take RT of 150mm.

Ragards,

Venkatramulu

 

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