June 20, 2015
Schedule 10 Steel Piping for FDC "Is the steel pipe indicated in Section 10.1.3 allowed to be Schedule 10 galvanized?” We have reviewed NFPA 24, 2010 edition that you indicated as the applicable standard as well as the 2016 edition. Our informal interpretation is that Schedule 10 galvanized pipe can be used. Section 10.1.3 refers to steel pipe that is externally coated and wrapped and internally galvanized between the check valve and the outside hose coupling for the fire department connection. There is no indication of the minimum pipe thickness. The commentary from the 2010 edition of the Sprinkler Systems Handbook indicates that steel pipe can be used for piping to a fire department connection because the fire department connection is an auxiliary water supply for the sprinkler system rather than a primary water supply. A change to the 2016 edition of NFPA 24 indicates in Section 10.1.1.3 that steel piping manufactured in accordance with Table 10.1.1.3 that is externally coated and wrapped and internally galvanized shall be permitted to be used between the hose coupling(s) on the fire department connection and the check valve installed in the fire department connection piping. Table 10.1.1.3 says the pipes have to meet one of the following standards: a) Specification for Black and Hot-Dipped, Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use, ASTM A795; b) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless, ASTM A53; or c) Standard Specification for Electric-Resistance Welded Steel Pipe ASTM A135. ------------ Technical Update is prepared by the Technical Services Dept. of the AFSA: Roland Huggins, a PE registered in fire protection engineering, Vice President of Engineering and Technical Services; 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. Ada Dickson Ada Dickson Administrative Assistant Technical Services Dept. PH: (214) 349-5965 ext. 124 Fax: (214) 343-8898 E-mail: [email protected] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.firesprinkler.org/private.cgi/sprinklernotes-firesprinkler.org/attachments/20160620/6a7fc9c9/attachment.htm>
