In the past I have seen what was called a canned pump used with wells. Put a vertical turbine pump in a 5 ft diameter sleeve 20 ft. deep and use the wells to keep it full of water while the pump runs. It saves the cost of a large tank but obviously is not as fail safe.
Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, April 13, 2010 1:57 PM To: [email protected] Subject: Wells as a water source We've got a rural chemical processing plant. No real municipal water supply. Owner wants to use wells, 3 at 1500 gpm each with an estimated, pumped residual pressure of approximately 26 psi at the surface. So there will be a pump within the well supplying water to a multi-use water main which will then branch off to feed the fire pumps. It is their desire not to have a fire water tank. Well water supply is supposed to be extremely reliable in this area. At this stage of the game maximum system demand is yet to be determined. The question is what are the issues with having a well pump or pumps serving a fire pump? Any restrictions or things to consider? I have found nothing giving any specific guidelines concerning this arrangement. I've looked at NFPA 20, 2007, 7.2 and NFPA 1142 and it appears that a dedicated fire well is presumed. These wells are going to be costly so they will not want to drill wells dedicated to FP only. 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)
