Presuming you are talking about fire pump cooling operation, is this really a radiator-cooled pump or is it a heat exchanger cooled pump? Heat exchangers use the pumping medium to cool the pump and this piping cannot stagnate or cooling system will not function. Piping back to the main header where back pressure is a bad idea. One even has to be careful how high this might be piped as stagnation can occur from head alone. This should be piped to atmosphere. If this is a radiator, isn't it self-contained and therefore has no discharge?
Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Senior Fire Protection Engineer O 952-656-3662 \ M 320-250-5404 \ F 952-229-2923 [email protected] \ burnsmcd.com 8201 Norman Center Drive, Suite 300 \ Bloomington, MN 55437 *Registered in: MN, PA, & TX **NICET IV - Water-Based Systems Layout -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Easter, Timothy Sent: Friday, March 04, 2016 12:54 PM To: [email protected] Subject: Piping of radiator discharge line We have an 8" pressure relief valve and floor drain piped directly to storm, but apparently have not accounted for the radiator discharge line (either 1-1/2" or 2"). It currently blows out into the yard during their weekly tests. The Client says it can be piped to storm as well; but that they normally see, and would prefer to have this piped back into the main header. What is usual practice? Feel free to contact me with any questions. Regards, Timothy Easter, P.E. Fire Protection Engineer Direct: (757) 383-6217 [email protected]<mailto:[email protected]> AECOM 11832 Rock Landing Drive Suite, 306, Newport News, Virginia 23606 www.aecom.com This e-mail and any attachments contain AECOM confidential information that may be proprietary or privileged. If you receive this message in error or are not the intended recipient, you should not retain, distribute, disclose or use any of this information and you should destroy the e-mail and any attachments or copies. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
