862 - 01/13 - Pressure Switch Location for Fixed Fire Suppression Systems - USA
The pressure switch is a critical component of the fixed fire suppression system which activates to automatically close the areas ventilation system when a fire is detected.
The US regulations require all controls and valves for the operation of the system to be outside the space protected and notes that they cannot be located in any space that might be cut off or made inaccessible in the event of fire in the protected spaces.
The USCG Alert reminds Owners and Operators of vessels installed with fixed fire suppression systems to ensure the pressure switches are properly located aboard their vessels and if switches are found to be within the area they are designed to protect, should be relocated by a properly trained service technician.
The full USCG Marine Safety Alert (05-12) can be found.
Source of information: United States Coast Guardwww.uscg.mil