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Chemical lab sprinklers

Question asked by riskcontrol on Feb 6, 2017
Latest reply on Feb 6, 2017 by mlonigro

Class 'D' lab as per NFPA45 requires OH1 sprinkler design and NFPA 45 (2015) 6.1.12 notes that “Fire sprinklers in laboratory units shall be the quick-response (QR) sprinkler type installed in accordance with NFPA 13.”.

However notes that -  (A. ) A series of fire tests in typical chemical laboratories was conducted to evaluate quick-response sprinkler technology and the use of quick-response sprinklers in chemical laboratories. Fire test results demonstrated that both standard-response and quick-response sprinklers were effective in controlling fires. Additionally, fire test results of the quick-response sprinklers showed lower maximum temperatures at the 5 ft level consistent with what is considered acceptable tenability in the room of fire origin, as discussed in NFPA 13D, and evaluated by ANSI/UL 1626, Residential Sprinklers for Fire Protection Service. Also see NISTIR 89-4200, “Quick Response Sprinklers in Chemical Laboratories: Fire Test Results,” sponsored by the National Institutes of Health, Bethesda, MD.


So does this mean that QR sprinklers are not mandatory?