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American Fire Sprinkler Association [http://www.firesprinkler.org/] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AFSA Technical Update ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A newsletter dealing with codes and other technical issues August 30, 2012 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 10-Year Sprinkler Test "NFPA 25 in 5.3.1.1.1.6 indicates that dry sprinklers have to be tested or replaced after 10 years of being in service. Is a dry sprinkler considered to be in the same category as a regular sprinkler when it comes to testing? For example, dry sprinklers in a harsh environment or corrosive atmosphere. Do you have to take samples from each environment, one sample from freezer and another from an outside canopy? NFPA 25 in A.5.3.1.2 indicates within an environment, similar sidewall, upright, and pendent sprinklers produced by the same manufacturer could be considered part of the same sample, but additional sprinklers would be included within the sample if produced by a different manufacturer. Do you have to take a sample of each manufacturer within an environment to be tested?" We have reviewed NFPA 25, 2011 edition that you indicated as the applicable standard. Our informal interpretation is that dry sprinklers are replaced every 10 years or tested and that samples have to include each manufacturer. First, Section 5.3.1.1.1.6 indicates that dry sprinklers that have been in service for 10 years shall be replaced, or representative samples shall be tested. They shall be retested at 10-year intervals. Then in Section 5.3.1.1.2 it indicates that where sprinklers are subjected to harsh environments, including corrosive atmospheres and corrosive water supplies, on a 5-year basis, sprinklers shall either be replaced or representative sprinkler samples shall be tested. The annex for 5.3.1.1.2 explains that examples of these environments are paper mills, packing houses, tanneries, alkali plants, organic fertilizer plants, foundries, forge shops, fumigation areas, pickle and vinegar works, stables, storage battery rooms, electroplating rooms, galvanizing rooms, steam rooms of all descriptions including moist vapor dry kilns, salt storage rooms, locomotive sheds or houses, driveways, areas exposed to outside weather, around bleaching equipment in flour mills, all portions of cold storage areas, and portions of any area where corrosive vapors prevail. Harsh water environments include water supplies that are chemically reactive. As such, dry sprinklers are used quite often in areas described in A.5.3.1.1.2 where on a 5-year basis, sprinklers shall either be replaced or representative sprinkler samples shall be tested. This seems to negate Section 5.3.1.1.1.6 for the 10-year replacement or samples to be tested for dry sprinklers. Since Section 5.3.1.1.1.6 does specifically address dry sprinklers on a 10-year basis, dry sprinklers should not be included in with all other sprinkler types in harsh environments addressed by Section 5.3.1.1.2. The representative samples submitted reflect an area of the building or floor. As such, if the sample reflects both outside and inside the cooler, a failure would result in all the sprinklers in both of those spaces to be replaced. Conversely, if the sample from the coolers pass and the separate sample from the outside failed, only sprinklers located outside would have to be replaced. Regarding the second question, if there are different manufacturers within the representative sample for testing, additional sprinklers from each manufacturer have to be provided for testing. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ firesprinkler.org [http://r20.rs6.net/tn.jsp?e=001S69Us1sw_7SYN6umLgWHJtKjCv9XYgEEhNU0IwH6hRjd1eyOwQ1p8dJo2CMaD290P2wbdm9GwReNawKM9Svcg9EV9ZSHztUdEuS-Ihc4QL3JuWYbjxn4QQ==] 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Printable Copy PDF Version [http://r20.rs6.net/tn.jsp?e=001S69Us1sw_7RpXRnCgdlPrYJ6It22r6pX6nQNX8OIs0Eh-HKyyJpiq-4g8AcnfEq7GpeVixNffJUPu3oOm2KiWkU4Ptj1cQYN-XR2mwgPpNoC4GWiA4Im60VUex9qiI8D6UY3ywOHO2ENSb29UHIaT0W3SUvaqhHaZyjPZ8TrmMcNU4GkBXtDueQVQ3W51HFDwPI5bJxuO8w=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mark Your Calendar! 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For details and/or to register, visit the AFSA Calendar [http://r20.rs6.net/tn.jsp?e=001S69Us1sw_7QU_GIfIkntip3U30CQuMk--arsGO5788ca1jcwBLhJLxE-zh1v_sR76FhsiHD9qBGevADk4HmK7y888Yv52dYIteJLOaW8PJifuhZwf0hdxo5dnznnI2y91L5OHe8ltBh7-B72pAACVWyMzgILcp17UMHkBfaiEdugbL3rVaO97wsnpZWq8eb1HFAIyQer6eJS7XoNAYVN7JUUlUTtutYnQIPSDsedJfMaLeKbyhSHzu0fuFyyaG5tXYynyVi5UyNmrPpIVENnx0NYEEQ_nlnn]. e-campus_logo [http://r20.rs6.net/tn.jsp?e=001S69Us1sw_7QgPXqZxGRxgu9MDS_IftvHlgVPvsa1WA27FSdJ8ZpFPlsdFUYp0bV18OB9V1pEnXtNqBnMMIrn2_5Y2xVymOcQC0S1jTCh49GBT7n94kpom2XFvRWWPMBI] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Antifreeze TIAs TIAs on NFPA 13, NFPA 13R, NFPA 13D, and NFPA 25 on antifreeze issues. 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