Outside of the "Leakage" issue there is no reason that the water temp. between 38 and 40'F would affect the operation of any of the components in the static state. When the system flows and introduces that water, to say a freezer dry system you may have an issue with ice build-up inside of the pipe since the temp. is already so close to freezing.
Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, February 09, 2010 6:29 AM To: [email protected] Subject: Using chilled water storage for FP water source In addition to yesterdays inquiry I've got another project which uses their 300K gallon chilled water storage tank as their main source for fire water. The water temp is in the range of 38-40 degrees (F). They did have a fitting separate some time ago and also have some significant leakage issues, such that the jockey pump cycles on and off about every 3-4 minutes going from around 150 psi up to 175 psi and back down to 150. The question is, would the use of water at this temp. affect the gaskets in the grooved fittings, or have any other significant affect on the system or the system valves? We have an assortment of everything from dry, deluge, preaction, foam, wet, etc. This is a very large campus with 20" underground mains. Craig L. Prahl, CET Fire Protection Specialist 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
