DIT Welder Practice Questions - Uganda DIT Workers' PAS Occupational Test - Welder Exam

What is the critical safety rule before welding or cutting a container that previously held oil, fuel, or chemicals?

Preheat the container to 200 degrees Celsius to burn off any residue Thoroughly clean, purge, and vent the container, then verify it is gas-free Welding can proceed immediately if you use a low-hydrogen electrode Fill the container with pure oxygen to prevent carbon monoxide formation

Correct Answer:

Thoroughly clean, purge, and vent the container, then verify it is gas-free

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