American Fire Sprinkler Association
12750 Merit Dr., Suite 350 Dallas TX 75251
Ph: (214) 349-5965 Fax: (214) 276-0908
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TECHNICAL UPDATE
JUNE 4, 2008
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"We have an open nozzle deluge system in a duct handling hot dusty
air. Occasionally, the customer would like to inject water into the
system to lower the temperature. Can we use the same line fed from a
separate pump on the site into the same set of nozzles? The supply
line would have double check valves."
We have reviewed the 2006 edition of the International Fire Code as
the applicable Standard. Our informal interpretation is that the
system should not be modified for other uses unless approved by the AHJ.
Section 901.8 of the IFC states, "Removal of or tampering with
equipment. It shall be unlawful for any person to remove, tamper with
or otherwise disturb any fire hydrant, fire detection and alarm
system, fire suppression system, or other fire appliance required by
this code except for the purpose of extinguishing fire, training
purposes, recharging or making necessary repairs, or when approved by
the fire code official." The NFPA 15 standard was also checked and the
scope indicates the water spray system is for fire protection service.
It does not indicate that the system can be modified for other
purposes. Thus the deluge system should not be modified unless it is
approved by the AHJ.
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Technical Update is prepared by the Technical Services Dept. of the
AFSA: Vice President of Engineering and Technical Services Roland
Huggins, a PE registered in fire protection engineering; Phill Brown,
a NICET IV certified automatic sprinkler technician and NFPA Certified
Fire Protection Specialist (CFPS) and Tom Wellen, a degreed fire
protection engineering technologist. This is provided with the
understanding that the AFSA assumes no liability for this opinion or
actions taken on it and they are not to be considered the official
position of the NFPA or its technical committees.
Copyright - 2008, American Fire Sprinkler Association. All Rights
Reserved
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