Welding WPS / PQR

A: A would shrink the predicted HAZ unrealistically and mask hydrogen cracking risk, B drops efficiency and would push you to a non-conservative conclusion, C would flag burn-through and distortion that nobody is seeing, D follows V×I divided by speed with an efficiency term and matches observed bead profile.

A: A ignores how deoxidizer chemistry affects weld metal properties, B treats a procedural knob as a substitute for metallurgical control, C ties requalification to testing scope instead of variable status, D aligns with Section IX philosophy that certain changes always need fresh mechanical evidence.

A: A trades speed for hydrogen risk that DFMEA will flag, B uses an electrode type known for moisture sensitivity, C risks lack of fusion buried deep in the joint, D matches section thickness and hydrogen limits with a stable process window.

A: A disconnects process control from actual thermal exposure, B bypasses the qualification basis, C relies on tribal knowledge instead of data, D ties measurement back to what was proven acceptable.