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QW-360 WELDING VARIABLES FOR WELDING OPERATORS
QW-361.2 Essential Variables — Machine Welding
(a) A change in the welding process.
(b) A change from direct visual control to remote visual control and vice-versa.
(c) The deletion of an automatic arc voltage control system for GTAW.
(d) The deletion of automatic joint tracking.
(e) The addition of welding positions other than those already qualified (see QW-120, QW-130, and QW-303).
(f) The deletion of consumable inserts, except that qualification with consumable inserts shall also qualify for fillet welds and welds with backing.
(g) The deletion of backing. Double-welded groove welds are considered welding with backing.
(h) Achange from single pass per side to multiple passes per side but not the reverse.
So P No/F No/t all are non essential variables for SAW process? If an operator is qualified in P 8 can he make the welding in P 1 and does the same applicable for F No also? what about the thickness range etc?
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