Understanding API ICP653 Reading 15-Worksheet-11a
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QW-304 Welders<br />
Except for the special requirements of QW-380, each welder who welds<br />
under the rules of the Code shall have passed the mechanical and visual<br />
examinations prescribed in QW-302.1 and QW-302.4 respectively.<br />
Alternatively, welders may be qualified by volumetric NDE per QW-191 when<br />
making a groove weld using SMAW, SAW, GTAW, PAW, and GMAW (except<br />
short-circuiting mode for radiographic examination) or a combination of these<br />
processes, except for P-No. 21 through P-No. 26, P-No. 51 through P-No. 53,<br />
and P-No. 61 through P-No. 62 metals.<br />
Welders making groove welds in P- o. 21 through P-No. 26 and P-No. 51<br />
through P-No. 53 metals with the GTAW process may also be qualified by<br />
volumetric NDE per QW-191.<br />
The volumetric NDE shall be in accordance with QW-302.2. A welder<br />
qualified to weld in accordance with one qualified WPS is also qualified to<br />
weld in accordance with other qualified WPSs, using the same welding<br />
process, within the limits of the essential variables of QW-350.<br />
Charlie Chong/ Fion Zhang
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