March 14, 2016 ESFR in Concealed Spaces "Can ESFR sprinklers rated at 200 deg. F be used as attic or concealed space applications?" We have reviewed NFPA 13, 2013 edition that you indicated as the applicable standard as well as the 2016 edition. Our informal interpretation is that ESFR sprinklers might be allowed under certain circumstances. ESFR sprinklers would not be appropriate for these spaces for a new design. A concealed space created with existing ESFR sprinklers from building modifications is plausible. The 2016 edition of NFPA 13 added new text in Section 8.3.3.1 that sprinklers in light hazard occupancies can be an ESFR sprinkler. Section 8.15.1.3 specifies that concealed spaces are light hazard. Thus, ESFR sprinklers can remain in place. However, if the concealed space meets Section 8.15.1.6 for horizontal concealed combustible spaces, then the sprinkler protection should be listed for use in horizontal combustible concealed spaces (with a slope not exceeding 2 in 12). As such, this would not allow ESFR sprinklers to remain in place.
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 PE registered in fire protection engineering. 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 2016, American Fire Sprinkler Association. All Rights Reserved Training Calendar AFSA Beginning Fire Sprinkler System Planning School 2016 Schedule April 4 - 15, 2016 May 16 - 27, 2016 July 18 - 29, 2016 Oct. 3 - 14, 2016 For more info, call: 214-349-5965 ext. 132
