A live fire watch is necessary if the fire alarm system is out of service for what length of time?

A live fire watch becomes necessary when a fire alarm system is out of service for four hours or longer. This timeframe is established to ensure safety in buildings where the absence of a functioning fire alarm system increases the risk of fire hazards. During this period, a fire watch involves trained personnel monitoring the premises to detect any signs of fire, provide immediate reporting to the fire department, and take necessary action to control any fire emergency, thereby protecting the occupants and property.

The requirement of four hours emphasizes the importance of timely responses to potential fire hazards, aligning with safety regulations and best practices that prioritize occupant safety in the event that the fire alarm system is down for an extended period. This guideline supports the effective management of fire risks, particularly in high-occupancy or high-risk environments.