ASME Sec.lX (Qualification Standard for Welding and Brazing Procedures)

Question 0

ASME Sec.IX

What is Minimum length to RT to examine when qualifying a welding operator with a test coupon (Welding)?

Answer 0

ASME Sec.IX
6"
(QW-302) Type of Test Required
(QW-302.2) Volumetric NDE /
When the welder or welding operator is qualified by volumetric NDE, as per- mitted in QW-304 for welders and QW-305 for welding operators, 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 may be required, but the number need not exceed four consecutively made test coupons. The examination technique and acceptance criteria shall be in accordance with QW-191.

Question 1

ASME Sec.IX

What is Minimum length to RT/UT to examine when qualifying a welder with test coupon or 1st production weld (Welding)?

Answer 1

ASME Sec.IX
6"
(QW-302) Type of Test Required
(QW-302.2) Volumetric NDE /
When the welder or welding operator is qualified by volumetric NDE, as per- mitted in QW-304 for welders and QW-305 for welding operators, 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 may be required, but the number need not exceed four consecutively made test coupons. The examination technique and acceptance criteria shall be in accordance with QW-191. 
(QW-304) Welders
(QW-304.1) Examination
Welds made in test coupons for performance qualification may be examined by visual and mechanical examinations (QW-302.1, QW-302.4) or by volumetric NDE (QW-302.2) for the process(es) and mode of arc transfer specified in QW-304. Alternatively, a minimum 6 in. (150 mm) length of the first production weld(s) made by a welder using the process(es) and/or mode of arc transfer specified in QW-304 may be examined by volumetric NDE. (a) For pipe(s) welded in the 5G, 6G, or special posi- tions, the entire production weld circumference made by the welder shall be examined.
(b) For small diameter pipe where the required mini- mum length of weld cannot be obtained from a single production pipe circumference, additional consecutive cir- cumferences made by the welder shall be examined, except that the total number of circumferences need not exceed four.
(c) The examination technique and acceptance criteria for production welds shall be in accordance with QW-191.

Question 2

ASME lX

What is minimum length of RT/UT when qualifying a welding operator on his first production weld (Welding)?

Answer 2

ASME lX (QW-305) Welding Operators
(QW-305.1) Examination
3’
QW-305.1 Examination. Welds made in test coupons may be examined by volumetric NDE (QW-302.2) or by visual and mechanical examinations (QW-302.1, QW-302.4). Alternatively, a minimum 3 ft (1 m) length of the first production weld(s) made entirely by the welding operator in accordance with a qualified WPS may be exam- ined by volumetric NDE.
(a) For pipe(s) welded in the 5G, 6G, or special posi- tions, the entire production weld circumference made by the welding operator shall be examined.
(b) For small diameter pipe where the required mini- mum length of weld cannot be obtained from a single production pipe circumference, additional consecutive cir- cumferences made by the welding operator shall be exam- ined except that the total number of circumferences need not exceed four.
(c) The examination technique and acceptance criteria for production welds shall be in accordance with QW-191.