Question

A fire watch is required when a fire alarm or sprinkler system is out of service in an occupied building for

A. more than 6 hours in a 24-hour period

B. more than 4 hours in a 12-hour period

C. more than 4 hours in a 24 hour period

Answer 1

A fire watch is required when a fire alarm or sprinkler system is out of service in an occupied building for more than 4 hours in a 24-hour period. The threshold of time is crucial to ensure safety due to the potential dangers of a fire. This understanding aligns with the overall equivalence provided in the hint given.

Step-by-step explanation:

A fire watch is required when a fire alarm system or sprinkler system is out of service in an occupied building. Understanding the correct threshold of time before a fire watch becomes necessary is critical due to the uncertainty over whether a serious fire or hazard awaits after an alarm and the potential for extreme physical danger. Considering that there is an equivalence between being on for 12 hours or operating at half-power for 24 hours, the appropriate period without these fire protection systems before a fire watch is needed is more than 4 hours in a 24-hour period.

The answer choices imply thresholds:

• a. is more than seven hours.
• b. is at most seven hours.
• c. is at least seven hours.
• d. is less than seven hours.

Given the understanding of the equivalence described in the hint, the correct threshold is logically choice c. more than 4 hours in a 24-hour period.