LONG TIME PROJECT.
Before Welding Material check: Verify base metals and filler materials match drawings and specifications.
Joint fit-up: Inspect root gap, bevel angle, alignment, and clean joint surfaces free of rust and oil.
Procedure verification: Confirm the correct Welding Procedure Specification (WPS) is available and approved.
Welder validation: Check that welder qualification records (WPQ/WQT) are valid for the specific job.
Equipment check: Ensure calibration of welding machines and gauges.
During
Welding Parameter monitoring: Check voltage, amperage, travel speed, and shielding gas flow rate.
Temperature control: Measure and record preheat and inter pass temperatures.
Process surveillance: Ensure welders follow the correct technique, cleaning between passes, and weather conditions are acceptable.