Equipment Inspection and Maintenance Flashcards

When should flashback arrestors be installed on a torch system?

Answer: At both the torch and regulator ends of each hose

Flashback arrestors should be installed at both the torch end and the regulator end of each hose to provide maximum protection against flashback.

What is the purpose of purging gas lines before lighting a torch?

Answer: To remove any air or mixed gases from the hoses before ignition

Purging clears air or any mixed gases from hoses and the torch body, preventing a potentially explosive mixture from being ignited at startup.

What condition indicates a torch tip needs to be cleaned or replaced?

Answer: A popping or uneven flame

A popping, irregular, or uneven flame is a sign that the torch tip orifice is dirty or damaged and needs cleaning or replacement.

Which tool is approved for cleaning a clogged torch tip orifice?

Answer: A tip cleaner (tip drill) of the correct size

Only an approved tip cleaner (tip drill) of the correct size should be used to clean a torch tip to avoid enlarging or damaging the orifice.

What should be done with a cylinder that has a damaged or leaking valve?

Answer: Label it defective, move it outdoors away from ignition sources, and contact the supplier

A cylinder with a damaged or leaking valve must be labeled defective, moved safely outdoors away from ignition sources, and reported to the supplier immediately.

How should oxygen cylinder valves be opened?

Answer: Slowly and fully, then backed off a quarter turn

Oxygen cylinder valves should be opened slowly and completely, then backed off a quarter turn to prevent the valve from becoming stuck open under high pressure.