The maintenance shop shall include the following fire protection requirements:
a. Sprinkler system (exception) for maintenance shop shall not be required based on all the following conditions:
(i) Building less than 1500 sq. ft. area.
(ii) Building detached from all other adjacent buildings.
(iii) Building spaced more than 50 ft. from adjacent fire exposure.
b. Sprinkler system required for maintenance shop shall be designed in accordance with NFPA 13 and shall provide complete coverage throughout the building.
c. Reference section 8.1 for additional design information.
d. Class A:B:C portable multi-purpose fire extinguishers shall be provided throughout the building in accordance with NFPA 10.
Fire Protection Requirements of Maintenance Shop Building
The maintenance shop shall include the following fire alarm and detection requirements:
a. If a sprinkler system is installed in the maintenance shop then smoke and/or heat detectors for area coverage is not required, only monitoring of the sprinkler flow device. The control valve for the sprinkler system shall be maintained in the locked open position.
b. If a sprinkler system is not installed then smoke detectors will be installed throughout the building for area coverage.
c. Smoke detectors are not to be located in the direct stream of the room’s airflow, with a minimum distance of 3’-0” from any supply air diffuser.
d. For work areas that anticipate excessive amounts of dust, fumes, or high humidity, then rate compensated/fixed temperature detectors rated at minimum 135º F shall be installed.
e. Duct detectors shall be provided for each HVAC system that exceeds 2000 CFM. Duct mounted smoke detectors with sampling tubes shall be mounted in the supply duct(s) upstream of any branch connections. Duct detectors shall meet the requirements of NFPA 90A for design and installation. Additional detectors in the return plenum or at the return opening of the HVAC unit may also be required based on criteria in NFPA 90A.
f. Manual fire alarm stations shall be located at each exit at a maximum height of 4’-6”.
g. Combination horn/strobe notification device(s) to be mounted in unobstructed location 8’-0” above finished floor. If three (3) or more strobe appliances are located in field of view less than 55’-0” apart, then the strobe circuit shall be synchronized.
h. Provide fire alarm junction with labeled terminal strips (minimum 12 terminals) for all circuits to terminate inside the building to interface with main fire and gas control panel, via an analog signaling line circuit.
i. All fire alarm detection input devices shall be programmed with a peculiar address point for proper identification at the main FGCP.
j. Fire alarm system required for maintenance shop shall be designed in accordance with NFPA 72, and section 4 and 5 of the Fire and Gas Detection Standard.