What if you ran plastic, CPVC is approved for fire protection above grade per NFPA 13. See 6.3 of NFPA 13, 2007.
Craig L. Prahl, CET Fire Protection Group Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [EMAIL PROTECTED] http://www.ch2m.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Green Sent: Thursday, July 24, 2008 8:19 AM To: [email protected] Subject: Deperming Pier I am installing a dry pipe system (no sprinklers) supplying four hose valves on a pier. The dry pipe valve assembly is located in a heated area. Extending out from the dry pipe valve assembly is 6" galvanized steel pipe. The steel pipe is routed below the pier out to the location of four hose valves. The pier is used for Deperming ships, submarines. Deperming is a procedure for erasing the permanent magnetism from ships and submarines<http://en.wikipedia.org/wiki/Submarines> to camouflage<http://en.wikipedia.org/wiki/Camouflage> them against magnetic detection vessels and enemy marine mines<http://en.wikipedia.org/wiki/Naval_mines>. Anyway, there is about a 200' section of the pier that requires that all materials be non-magnetic. * Galvanized steel pipe that NAVY specified obviously want work. * CPVC plastic pipe will not work because installing dry system - correct on this right? * Provided them pricing for stainless steel, copper, brass and now they want pricing for Aluminum,. So a few questions o Ever used aluminum pipe for sprinkler installations? o Is there some other pipe type that I am not thinking about Help would be most appreciated. Rick E. Green District Manager East Coast Fire Protection, Inc. 1113 Cavalier Boulevard Chesapeake, Virginia 23323 757/485-7486(p), 757/295-0956(direct), 757/328-0131(cell) [EMAIL PROTECTED] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
