What should be done if a cutting torch backfires?

In the event of a cutting torch backfire, the immediate and correct response is to shut off the gas supply and inspect the equipment thoroughly. A backfire occurs when the flame goes back into the mixing chamber of the torch, which can cause damage and create a hazardous situation. Shutting off the gases is crucial as it helps eliminate the risk of further backfiring or a potential explosion. Once the gas supply is turned off, inspecting the torch and hoses is important to check for any damage, blockages, or leaks that may have caused the backfire. This step ensures both safety and proper functioning before resuming work.

Continuing to cut without addressing the issue can put the operator at risk of injury and may lead to more severe operational problems. Turning off only the oxygen while keeping the acetylene on does not resolve the potential dangers and might even exacerbate the situation. Allowing the torch to cool down without completing the necessary checks would be inadequate, as any underlying issues could persist unnoticed. Therefore, shutting off both gas supplies and conducting a careful inspection is the safest and most responsible approach.