Deluge system,  is a system employing open nozzles attached to a piping system connected to a water supply through a valve that is opened by manual operation. When this valve is opened, water flows into the piping system and discharges from all nozzles attached thereto. Upon activation of the system, either from the operating panel at the bridge or in the ECR or by a manual release button located nearby the protected area the deluge pump(s) will start and section valve will open feeding the car deck deluge system with water.

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