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American Fire Sprinkler Association [http://www.firesprinkler.org/] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AFSA Technical Update ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A newsletter dealing with codes and other technical issues November 16, 2012 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Rolled Paper Storage "I have an existing area/density system that is designed at 0.45/4,000 using K-factor 8.0 upright sprinklers. The new building owner is going to store rolled paper 18 ft high in a building with a height of 27 ft 3 in. maximum. The paper is heavyweight, open array, banded or unbanded. My questions are: 1) Do we need to change out the existing sprinklers to a K-factor of 11.2 or greater if we stay with the area/density design? 2) Do you know of any reason roof or smoke vents would need to be added if we use the existing area/density design? The existing building does not have any. 3) If we decide to use a ESFR design, does it require any draft curtains between storage and production areas?" We have reviewed NFPA 13, 2010 edition as the applicable standard. Our informal interpretation is that the original 8.0 K-factors can be retained. As identified in Section 12.6.4, the requirements of Sections 12.6.2 and 12.6.3 shall not apply to modifications to existing storage application systems, using sprinklers with K-factors of K-8.0 or less. The annex for this section indicates that a modification of an existing system includes extending sprinkler protection into adjacent areas. Thus the existing system can be used if it can provide protection per Chapter 19. NFPA 13 does not dictate whether roof vents are to be installed for your second question. The architect or the engineer of record for the project would require the roof vents per the applicable building code or fire code. NFPA 13 addresses roof vents in Section 12.1.1 and allows them to be permitted if they have a higher temperature classification than the automatic sprinklers. If you should use ESFR sprinklers referenced in your third question, draft curtains separating ESFR sprinklers at system breaks or from control mode sprinklers or between hazards shall be permitted per section 12.1.1.3.1. This section also says to see 8.4.6.4. It indicates that a draft curtain is required to separate the two areas when the adjacent area has standard-response sprinklers. If both areas such as storage and production areas have fast-response operating elements, such as ESFR sprinklers adjacent to an area with quick-response sprinklers (i.e. production area), a draft curtain would not be required. It is also worth stating, that this action is in complete compliance where major renovations require the building to be brought into compliance with the latest editions of the codes and standards. Complying with the latest standard does not exclude this allowance for modifying exiting systems and does not require the system to be the same as a newly installed system. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ firesprinkler.org [http://r20.rs6.net/tn.jsp?e=001AGpWe6XRUCTGhlRQYHqtkLrJqVjmV97F1I4C2K-ZgwaTzLaocWghl6QjvdC1uTT8SXct06-cDefdiU8KjyyUvM-u5JO5QQlUwQcz9vSCxImDQoiFlF5Eig==] Hosted by the American Fire Sprinkler Association ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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 2012, American Fire Sprinkler Association. All Rights Reserved ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Download the PDF Version of Technical Update PDF Link [http://r20.rs6.net/tn.jsp?e=001AGpWe6XRUCT6B4ztoXoi-NsjPJSB8FRA0USTeikJ5k_OrcDQE541gFnp1mWZVtb4f_BhduYETtFFTp1GBYL5y4nEGk06QudkR7seaKlYVwGVhykIM0oltVfub_FGtr5y5XgQM92gb_-1Jxt7ea3121m8QzsvSncyBk7Zu5cP2KaP2ZqZcwzVN6zTlMIZtY92F7qt4KiN3MU=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Training Calendar AFSA Beginning Fire Sprinkler System Planning School January 14 - 25, 2013 Check our calendar to view upcoming training. For details and/or to register, visit the AFSA Calendar [http://r20.rs6.net/tn.jsp?e=001AGpWe6XRUCQrgUgZjN_5HvosNmzxqphPoUF36dpwm05Du06LrdJnjxZN5ltWhqrOx9Ix3QEAB7WKG1_HeCF3d5W5hOwF_YnzU5I-GlEs3T_JMBxi1oX6nrVPoE9uuhGAfS0shl9TnwRHg1Bu48c3Acj7yOUxK-DnsHrSEkWmME0ytJNhYDo3_YDmOq0VDxJKjBUHpY1q-Bnc63wWcXA4e7GOC3M-SMhpQeiGgDaUS-PzGPGiGYWqMeTUZZmg_KHWB_xbvZoUIaRFBFrvpp4CdYVDQPQ7bNOS]. e-campus_logo [http://r20.rs6.net/tn.jsp?e=001AGpWe6XRUCTcqBM7l2MqNQse8U7ktFZ5rGLmOXxXQA6DJjLTOlZ2h2993rYntMMWX7mBCTVDe_NACvw7_ovZn5s7qmTysk8z7d1LZI6KJapeEnLCzjc7lyQeZWsHs9CU] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Antifreeze TIAs TIAs on NFPA 13, NFPA 13R, NFPA 13D, and NFPA 25 on antifreeze issues. 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