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American Fire Sprinkler Association [http://www.firesprinkler.org/] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AFSA Technical Update ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A newsletter dealing with codes and other technical issues December 19, 2012 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ NOTICE: The Technical Update dated December 14th has been revised due to an error. See below this week's Technical Update for the revision of FDC Connected to Main Piping. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Comments Sought on Proposed TIAs for NFPA 13R and NFPA 25 NFPA13R, 2013 Edition Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies TIA Log No.: 1081 [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcNSxMZzubEYRsfUVtGPZYIO4-tHJY7oHAiK4cUzECYCzyu5lPRW_ZqleP_TBelKzHREVJpnl7_3OtKfHNmJKgWY0jglcJEI7xr16ezqN4Z25vmCSWXIbUzm1n_yf2IZb7wXUezojl1FcDAuFgg9fy0efJTxuGby8eo=], Reference: A.1.1, Comment Closing Date: January 25, 2013 The proposed change revises the fourth paragraph by deleting text in A.1.1. This text addressed the issue of whether a single building could use both a full 13 NFPA 13 and a 13R system in different portions of the building. As the deleted text states, the Technical Committee's position was that they couldn't be mixed unless the building is separated and classified as two buildings. In the 2013 cycle, there were multiple proposals and comments to explicitly state that both system types could not be used within a single building. See proposals 13R-5 and 6 and comments 13R - 5 / 6 / 7 / 51. All were rejected. The committee statements explicitly stated that a single building (either a separated, mixed- occupancy or a podium/pedestal facility) is allowed by the building codes to use a NFPA 13R system in the residential portions of the building and a NFPA 13 system in other portions of the building. This was a reversal of the previous position in recognition that for some situations, the building codes do allow using both systems within a single building. The problem is that the previous text was not deleted. Although new text is warranted, it seems that both NFPA 13 and NFPA 13R should address this issue as a coordinated effort. As such, the cleanest approach was simply to delete the identified text. The TIA can be accessed here [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcNSxMZzubEYRsfUVtGPZYIO4-tHJY7oHAiK4cUzECYCzyu5lPRW_ZqleP_TBelKzHREVJpnl7_3OtKfHNmJKgWY0jglcJEI7xr16ezqN4Z25vmCSWXIbUzm1n_yf2IZb7wXUezojl1FcDAuFgg9fy0efJTxuGby8eo=]. NFPA 25, 2011 Edition Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems TIA Log No. 1082 [http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=25], Reference: 8.3.2, Comment Closing Date: January 25, 2013 Approximately 25,000 pressure transducers used on fire pumps were recently recalled because of failures. Several thousand of the recalled transducers were used in fire pumps. Pressure transducers that stick or fail with a high-pressure reading can prevent a fire pump from starting when needed. The transducers may stick or fail and prevent the fire pump from responding when needed. The proposed language intends help identify pressure transducers that have developed abnormalities. Controller modifications that could identify many failures and when they occur were deemed to be impracticable. The proposed changes will not identify transducer failures when they occur, but will make it more likely to identify abnormal transducers during fire pump testing. The TIA can be accessed here [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcPHxThWQAn9pNAKkATr-_9W_9nbO5EpsN3aK8BfOCSuji0KPkvQooFMVb_uROvms4w7ms5-GOi0jSK3rmf-GNeqRQAbxx7inkdzhxMtcGWQip2DVaDbaFp8kwEZtyVaFuh_Lm63vo83fl4gh1ysSzwLR2Vrke8GHPk=]. Anyone may submit a comment by the closing date indicated above. To submit a comment, please identify the number of the TIA and forward to the Secretary, Standards Council, 1 Batterymarch Park, Quincy, MA 02169-7471. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The Technical Update dated December 14, 2012 was in error as presented. I failed to provide some background information regarding this question. The question was in regard to an existing installation where the inspector found the fire department connection connected to the cross mains on the opposite side of the building away from the riser. I failed to acknowledge in the Technical Update the base requirement regarding fire department connections connected to a manifold arrangement for multiple systems. Section 8.17.2.4.3 states, "For multiple systems, the fire department connection shall be connected between the supply control valves and the system control valves." Please replace the incorrect Technical Update with this revised version. I apologize for any inconvenience this may have caused. Tom Wellen, AFSA Technical Services ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ FDC Connected to Main Piping "We have a nursing home with two wet systems. There is a remote FDC on the opposite side building away from the fire sprinkler risers. The FDC piping connects to the end of the mains on the two systems with check valves. Is it an acceptable practice to connect to the end of a main on each of the two systems with check valves (one for each system) to supply the FDC?" In response to your question we have reviewed NFPA 13, 2010 edition as the applicable standard. Our informal interpretation is that the FDC can connect to the end of a main on each of the two systems if approved by the AHJ. The base requirement of NFPA 13 in Section 8.17.2.4.3 is that for multiple systems, the fire department connection shall be connected between the supply control valves and the system control valves. The arrangement found does not meet the NFPA 13 standard and would need AHJ approval. With that said, an exemption to this requirement may have been provided by the local AHJ based on the following information. The fire department connection shall be permitted to be connected to main piping on the system it serves according to Section 8.17.2.4.1.2. There are times when the riser for the sprinkler system is located remote from the fire department access. As such, this section allows the fire department connection to be located on main piping. The handbook commentary under Section 8.17.2.4.2 for single systems indicates that for wet pipe systems, the fire department connection can be connected to any portion of the feed main, not just at the system riser, if using another location makes more sense. The commentary does not mention connecting to cross-mains but that should be considered acceptable. The inlet pressure from the responding fire department pumper should be 150 psi and the minimum size of the pipe for the FDC is 4 inches as indicated by Section 8.17.2.3. A size smaller than 4 inches would not be permitted since the exception in 8.17.2.3(3) applies to a single riser. The standard also points out that the fire department connection cannot be attached to branch line piping in Section 8.17.2.4.1.1. As for connecting remotely to two systems, this would be no different than connecting to two systems at the riser so it also is acceptable. This type of arrangement should not be attempted on new installations unless approved by the AHJ. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ firesprinkler.org [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcM5Mj5MCk2sAMT3xrNYjOh6HxyYCAv2RqfLS_8XKLQ0srNxtkIE8NV1xVddABWwj6bhuG_Ozt2yu-ot6Ka_cv7v0YXBSjZHMMcz1x3mQ3cvFw==] 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=001RYJEllMWpcMkF0okqrFDeNG-iteigttisV1TEj9xFfh3yIr3EFXBKP91KkoQzioxokr_2UxMnIrFV4AU4OahKJnCQZbKYpEyk2WO1X7EW4bL_PvPnt7Xm03bDQ_Y2JmVb144DsITnwwnXc8De6Q4BwkugxpU4K53dhAXmJ1o9CCvg8LQG0HKkY9x1K1ApMxYhQZbBSwZRZk=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TIA 1081 [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcNcFIXDXOLAZIGhOdSyzUaOmS0zUDfcYmkZfIQP7NCS924a2yP6Q6n7r6CNtTg84rGd5zHQfyjJVfTw3X8XmDuBCZZWq38LCdQ3tYi9pFH0z01bOL5AT0K2RsHUkbrCPvONkOX01NvR5loq_MW6sMLoCnuyfGrkO-Z1yavlHElIb0b2V-NkhFZVBazavdJV8dA=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TIA 1082 [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcPRLWF-dJDG0NQTGobtQD-cVZzH-_iPCzsV33n9YUZmaK6H8GT1V10U6ELGdjdaYr_wzq4o-2qFfpTJG25NZ1TgHtet4xW0uzkAT0oDgtAu-6OFlaMw4Sbfc7wz5rkNt5lg1v-qMLdbmJJjJge6JXQzCM_BRHhdNgHpr_kj76vdmB4JngshA0VYm7u5Ma-sXG8=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Download the PDF Version of Technical Update December 14, 2012 PDF Link [http://r20.rs6.net/tn.jsp?e=001RYJEllMWpcPbrf7EjpzU8tLuqgZtVNZLxT1-Cm255MmiRrgDO-eTSTunRZAas8S8LWGysOCEMQNSzbfNDXcXCRDq0C0PHnqAviqqYk4s2RJjqOofICv659jVP8LUCj7Rc0n_RPl5ox4GfgKEk8lCBz6puZpDgLmwzFQv5LguQatyUfEWS0R1PoEw4RBy4DI5F0gvI7J5be4=] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Training Calendar AFSA Beginning Fire Sprinkler System Planning School January 14 - 25, 2013 Check our calendar to view upcoming training. 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