TSSA Gas Technician 3 (G3) Practice Questions - TSSA Gas Technician 3 (G.3) Certificate Of Qualification - Ontario Exam

Which condition is required for a fuel-gas fire or explosion to occur?

Fuel gas alone under any concentration Fuel gas, an ignition source, and oxygen (air) in the combustible range Liquid water and natural gas mixed in any ratio Nitrogen blanketing of a closed room

Correct Answer:

Fuel gas, an ignition source, and oxygen (air) in the combustible range

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