Final answer:
A Firewatch should be employed for at least 30 minutes after welding to keep an eye on the area for any signs of fires or smouldering materials. This is a safety regulation in order to prevent possible fires from the residual heat of welding.
Step-by-step explanation:
In the practice of welding, safety is paramount. The job of a Firewatch is typically to keep an eye on the area where welding activities have occurred and look for any signs of fires or smouldering materials. According to safety regulations, it is advised that a Firewatch be employed for at least 30 minutes after the completion of the welding process.
This time frame is recommended because it is often during this period that fires or overheating incidents most commonly happen as a result of still-hot sparks or residual heat from the welding. Therefore, having a vigilant Firewatch for at least 30 minutes after welding gives a safety buffer that allows any fire situations to be detected and handled before they can get out of control.
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