Hazardous equipment located in the hazardous material handling building shall meet the following requirements for fire protection systems:
a. The fire protection system selected shall be suitable for the hazard protected. The following are some examples of hazardous equipment and the types of systems to be used if needed:
(i) Gas turbine enclosure shall be protected with CO2 extinguishing system or water mist system.
(ii) Gas Compressor with lube oil system shall be protected with an overhead deluge foam system.
(iii) Diesel standby generators shall be protected with an overhead deluge foam system.
(iv) High hazard process equipment shall be protected with an overhead deluge system and/or water spray system to provided direct impingement on equipment for exposure protection. The deluge system can be supplemented with foam injection.
b. CO2 extinguishing system shall be designed in accordance with NFPA 12 as a total flooding system. Deluge, water spray and foam systems shall be designed in accordance with NFPA 11 and 15. Water mist systems shall be designed in accordance with NFPA 750.
c. Reference section Spray System, Foam System and Mist Water System for additional design information.
d. Class B:C portable dry chemical fire extinguishers shall be provided throughout the covered area in accordance with NFPA 10.
e. Quick attack foam/hose reel stations can be located inside the building or in close proximity near the building entrances.
f. Reference for additional design information on hose reel stations article.
Fire Alarm & Fire Protection of Hazardous Material Handling Building
Hazardous equipment located in the hazardous material handling building shall meet the following requirements for the fire and gas detection systems:
a. The fire and gas detection system selected shall be suitable for the hazard protected. The following are some examples of hazardous equipment and the types of systems to be used if needed:
(i) Gas turbine enclosure shall have UV/IR flame detectors and thermal detectors located inside the enclosure. IR combustible gas sensors shall also be located inside the enclosure and a minimum of two (2) sensors at the turbine fresh air intake(s).
(ii) Gas Compressor with lube oil system shall have IR/IR/IR flame detectors located overhead with fix temperature (165 ºF), pilot line detectors installed as a back-up system. IR combustible gas sensors shall also be located inside the area and a minimum of two (2) sensors at the fresh air
intake(s).
(iii) Diesel standby generators shall have IR/IR/IR flame detectors located overhead with fix temperature (165 ºF), pilot line detectors installed as a back-up system. IR combustible gas sensors shall also be located inside the area and a minimum of two (2) sensors at the fresh air intake(s).
(iv) High hazard process equipment shall have UV/IR flame detectors located overhead, with fix temperature (165 ºF), pilot line detectors installed as a back-up system. IR combustible gas sensors shall also be located inside the area and a minimum of two (2) sensors at the fresh air intake(s).
b. Gas sensors shall communicate with the main FGCP, via the integrated network or to the Plant Safety PLC, via 4 – 20 mA signal.
c. Monitoring of the deluge flow device or CO2 pressure switches shall be required. The control valve(s) for the deluge system(s) shall be maintained in the locked open position.
d. Manual fire alarm stations shall be located at each exit and maximum 200 ft. travel distance at a maximum height of 4’-6”.
e. Combination horn/strobe notification device(s) to be mounted in unobstructed location minimum 12’-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.
f. Operation of the local CO2 extinguishing system(s) and/or deluge system(s) shall be activated by the FGCP.
g. Reference of the Fire and Gas Detection Standard for additional information pertaining to the CO2 fire alarm and detection circuits.
h. Reference Building Construction and Occupancy Types | Buildings Fire Protection and Fire Protection Requirements of Control Building of the Fire and Gas Detection Standard for additional information pertaining to the gas detection circuits.
i. 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.
j. All fire and gas detection input devices shall be programmed with a peculiar address point for proper identification at the main FGCP.
k. Fire alarm system required for hazardous material handling building shall be designed in accordance with NFPA 12, 15 and 72.
All dimensions mentioned in this article are subject to change as per project or client requirements.