Which type of alarm indicates that the sprinkler system has been activated or there is a leakage past the sprinkler control valve?

The type of alarm that indicates activation of the sprinkler system or leakage past the sprinkler control valve is known as a Fire House (FH) alarm. This alarm is crucial for the safety protocols on an aircraft carrier, as it alerts crew members to potential fire hazards or water leaks that could compromise the integrity of ship systems or safety.

Understanding this aspect of alarm systems on the ship is vital because it helps the crew respond quickly to fire hazards, ensuring both personnel safety and the security of onboard materials, including ordnance. Proper training on identifying and responding to these alarms is a key part of maintaining explosive safety standards and preventing accidents on board. The other alarm types are used for different purposes, such as monitoring specific equipment states or signaling other types of emergencies, but they do not specifically inform about the sprinkler system's status.