When are hoses and gauges from oxygen and acetylene tanks required to be disconnected while underground?

When are hoses and gauges from oxygen and acetylene tanks required to be disconnected while underground?

• A. When not in use and when being transported
• B. Only at shift end
• C. Only during maintenance
• D. Always connected underground

Answer: (A)

In underground mining, controlling fire and explosion hazards from fuel gases is essential. Oxygen supports combustion, and acetylene is highly flammable and can be unstable if the hoses or regulators are damaged or leak underground. If hoses and gauges stay attached, a small leak or a snagged hose can lead to gas escaping and finding an ignition source in a confined, poorly ventilated space. Disconnecting them when not in use and during transport eliminates the flow of gas, reduces the chance of leaks, and prevents damage or snagging as you move through the mine. This is the safest practice for handling oxygen and acetylene underground.

In underground mining, controlling fire and explosion hazards from fuel gases is essential. Oxygen supports combustion, and acetylene is highly flammable and can be unstable if the hoses or regulators are damaged or leak underground. If hoses and gauges stay attached, a small leak or a snagged hose can lead to gas escaping and finding an ignition source in a confined, poorly ventilated space. Disconnecting them when not in use and during transport eliminates the flow of gas, reduces the chance of leaks, and prevents damage or snagging as you move through the mine. This is the safest practice for handling oxygen and acetylene underground.