If a sprinkler system has been off-line for two days, how often should it be inspected until it is back in service?

• A. Every 8 hours
• B. Once per day
• C. Weekly
• D. Continuously 24 hours a day until system is restored

Answer: (D)

Continuous monitoring is required when a sprinkler system is out of service because the period offline presents ongoing risk of changes that could render the system inoperable when it’s restored. While offline, a leak could develop, valves could be left improperly positioned, pipes could freeze or sustain damage, gauges could drift, or tampering could occur. If inspection happens only sporadically (every 8 hours, daily, or weekly), problems can go unnoticed and compromise readiness, meaning the system might not function correctly when it’s brought back online. By keeping eyes on the system 24/7 until restoration, any issue is detected immediately, and the system can be brought back into service safely and reliably.