Question

When is the torch valve closed and gas supply shut off?

1) When the gas supply is depleted
2) When the torch is turned off
3) When there is a leak in the gas line
4) When the torch valve is manually closed

Answer 1

The torch valve is closed when the torch is turned off, there is a leak in the gas line, or manually when work is completed or to conserve gas.

Step-by-step explanation:

The torch valve is closed and the gas supply is shut off when the torch is turned off. This is a standard safety practice in welding and cutting processes. When the torch is not in use, closing the torch valve prevents the flow of gas to the torch, ensuring safety and avoiding unnecessary gas consumption.

When the gas supply is depleted: This could be a situation where the torch valve is closed, but it is not a direct cause-and-effect relationship mentioned in the options.

When there is a leak in the gas line: While a leak is a safety concern, the immediate action is to shut off the torch valve when the torch is turned off to prevent gas flow.

When the torch valve is manually closed: This is a general statement; the torch valve is manually closed when the torch is turned off.

Closing the torch valve when the torch is turned off is a fundamental safety measure in welding and cutting operations, preventing gas flow and reducing the risk of accidents.