Steve, Section 506.6 of the Mechanical Code requires sprinklers inside ducts exceeding 10-inches that convey flammable vapors or fumes, but I cannot find a similar mandate for ducts conveying sawdust in either NFPA 664, CBC or CFC.
Interestingly, NFPA 664 speaks about duct sprinklers free of debris "where provided", but there is no mandate to actually provide duct protection. I used to work for a large aerospace firm and I don't recall any of the ducts having sprinklers, except those that conveyed flammable vapors. Galen Taylor County of Los Angeles Fire Department Fire Prevention Engineering 323-890-4339 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Thursday, September 19, 2013 9:33 AM To: [email protected] Subject: Dust collection - where/when are sprinklers required I have looked through the California editions of International Fire Code and Building Code and cannot find any prescriptives for sprinklers in dust collection systems in woodworking facilities. Does anyone know where the triggers are published, if anywhere? Is it in NFPA 664? Steve Leyton PROTECTION DESIGN & CONSULTING 2851 Camino del Rio South, Suite 400 San Diego, CA 92108 ------------------------------------------------------------- Ph: 858.751.2930 - ext. 102 Fax: 858.751.2933 Cell: 619.972.5696 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
