Understanding API ICP653 Reading 15-Worksheet-11a

QW-191.2 Ultrasonic Examination
QW-191.2.1 Method
(a) The ultrasonic examination in QW-142 for welders
and in QW-143 for welding operators may be conducted
on test welds in material 1⁄2 in. (13 mm) thick or greater.
(b) Ultrasonic examinations shall be performed using a
written procedure verified by the manufacturer to be in
compliance with paragraph T-150, Article 1, Section V
and the requirements of Article 4, Section V for methods,
procedures, and qualifications.
(c) Ultrasonic examination personnel shall meet the
requirements of QW-191.2.2.
Charlie Chong/ Fion Zhang