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NOTE: This is an unformatted excerpt from our online fire protection training library.

Supervisory Initiating Devices

Why monitor valves?

Why would anyone want to go to the expense to electronically monitor a sprinkler control valve? When automatic sprinkler systems fail to control a fire, the most common reason is that the system is impaired at the time of the fire because the sprinkler control valve is closed. Electronic monitoring provides a continuous check of the valve to assure it is in the fully open position. Anytime the valve is not fully open the fire alarm system will show a supervisory signal that serves as a constant reminder of the closed valve. The second reason for monitoring a sprinkler control valve is to minimize the possibility of an incendiary incident destroying the facility. An arsonist intent on burning the facility to the ground would likely shut the sprinkler valves before starting a fire. As soon as someone begins to close a monitored sprinkler valve, a signal is received and personnel can be dispatched to restore the valve to its open position.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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