If hazardous equipment is located under the sunshade building the fire protection system shall meet the following requirements:
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.
b. CO2 extinguishing system shall be designed in accordance with NFPA 12 as a total flooding system. Deluge foam system shall be designed in accordance with NFPA 11 and 15. Water mist systems shall be designed in accordance with NFPA 750.
c. Reference section (Water Spray System, Foam System, Water Mist System) for additional design information for the different types of systems.
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 in close proximity near the building open area.
f. Reference section 9 for additional design information on hose reel stations.
Fire Alarm & Fire Protection of Sunshade Building
If hazardous equipment is located under the sunshade building the fire and gas detection system shall meet the following requirements:
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:
b. 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).
c. Gas Compressor with lube oil system shall have IR/IR/IR flame detectors located overhead with fix temperature (165 F), pilot line detectors installed as a back-up system. IR combustible gas sensors shall also be located inside the area.
d. 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.
e. Gas sensors shall communicate with the main FGCP, via the integrated network or to the Plant Safety PLC, via 4 – 20 mA signal.
f. 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.
g. Conventional manual fire alarm stations shall be located in close proximity at a maximum height of 4’-6”. The manual station shall communicate to the FGCP, via an addressable module located on an analog signaling line circuit.
h. Operation of the local CO2 extinguishing system(s) and/or deluge system(s) shall be activated by the FGCP.
i. Reference section ( Building Construction and Occupancy Types | Buildings Fire Protection of the Fire and Gas Detection Standard for additional information pertaining to the CO2 fire alarm and detection circuits.
j. Reference section 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.
k. All fire and gas detection input devices shall be programmed with a peculiar address point for proper identification at the main FGCP.
l. Fire alarm system required for sunshade building shall be designed in accordance with NFPA 12, 15 and 72.