Heat trace systems for fire protection are to be Listed for their intended purpose. You need to look at the listing to see what the system’s installation limitations are. Some systems may only be used for pipe up to a certain size for example.
No you cannot use heat tape on system valves. The systems are also to be electrically supervised, typically accomplished through the fire alarm system. See 2013, NFPA 13, 8.16.4.1.4 – 8.16.4.1.4.2 for more info. NFPA 13, 2013: 7.2.5.2.3 Heat tape shall not be used in lieu of heated valve enclosures to protect the dry pipe valve and supply pipe against freezing. This is under Dry Pipe Valves, there is also similar verbiage under preaction and deluge valves in 7.3.1.8.2.3 since dry, preaction or deluge would be the most likely systems used where the system could be subject to freezing. it would be assumed that a wet pipe system valve would automatically be located in a heated area. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Dewayne Martinez Sent: Wednesday, November 30, 2016 11:17 AM To: [email protected] Subject: pipe heat trace [EXTERNAL] I need to heat trace some standpipe feed mains in a parking garage when running from the riser room to the stairwells. Is it acceptable to also heat trace the standpipe control valves? They would prefer to keep them out of the stairwells. Thanks, Dewayne
_______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
