What should the fire watch do if they observe smoke or smoldering after torch work?

When a fire watch observes smoke or smoldering after torch work, notifying the proper authorities while maintaining observation is the correct course of action. This response ensures that professionals trained to handle fire hazards are informed of the situation, allowing for an appropriate response to prevent a potential fire from spreading. Maintaining observation is crucial as it allows the fire watch to monitor the situation closely while waiting for help, ensuring that if the situation worsens, they can provide accurate information to emergency responders.

Immediate evacuation may be necessary in certain high-risk situations, but it's essential for trained personnel to assess the situation first. Using a fire extinguisher could put the fire watch at risk, especially if they are not trained to use it safely or if the fire is beyond control. Ignoring smoke or smoldering would be negligent, as even minor smoke can indicate a developing fire hazard that needs to be addressed. Thus, the most effective and responsible action is to alert the proper authorities and stay vigilant in monitoring the situation.