In Critical Rooms such as hub rooms and small server rooms, a minimum of Automatic Sprinkler System or Gaseuous type Fire Suppression are required. Is there a code that allows a ceiling mounted HCFC Fire extinguisher as substitute?
NFPA 13 requires every area in a building be sprinklered (with several omissions permitted on chapter 9) unless an AHJ allows otherwise. I don't think any sensible AHJ will allow the substitution of sprinklers for a system that's been observed as largely ineffective.
Our jurisdiction has allowed automatic clean fire extinguishment systems to be used in server equipment rooms in buildings with automatic sprinkler system complying with NFPA 13 without classifying the building as nonsprinklered. The complete suppression of the fire in the server room must be considered to keep the classification of the building as sprinklered throughout in accordance with NFPA 13. The same concept is typically applied for commercial cooking hoods where automatic sprinkler systems throughout the building per NFPA 13 was required by NFPA 101 or other building codes. NFPA 13 not does not designate the occupancies where automatic sprinkler systems are required, codes like NFPA 101 and IBC governs the application of automatic sprinklers system in various occupancies and/or building construction types.
Related 2015 NFPA 101:
HCFC-123 is a hydrochlorofluorocarbon, gaseous extinguishing agent that is non-conducting and which leaves no residue and is even environmentally safe. The agent is effective for extinguishing a fire because the clean agent chemically reacts with the ignition, fuel and oxygen in the fire to disrupt the chain reaction between them.
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