Hard to say what EOR decided was need for the new cancer center. We had a 500 gpm pump that could not meet 150% capacity (barely got 100% before the pressure dropped to 0 psi) during the annual tests. Building owner hired an engineer and his solution was to replace the pump with a new 750 gpm version. I politely asked him how a 750 gpm pump would work where there wasn't enough water to supply a 500 gpm pump. All he could say was the 750 gpm would provide more water.
Mike Hill -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 9:12 AM To: [email protected] Subject: Re: Oversized fire pump Meeting demand is not an issue for sprinklers. Not sure about standpipes but demand Dow would be no more than 1000 gpm. Interesting side note: this pump replaced a 1000 gpm at 100 psi which would have worked fine with the water. Anecdotally, this pump was upsize because it was needed for the new 2 story cancer treatment center(?) Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-608-4559 (cell) Sent using CloudMagic [https://cloudmagic.com/k/d/mailapp?ct=pi&cv=6.0.64&pv=8.2] On Tue, Feb 16, 2016 at 9:04 AM, Richard Carr <[email protected]> wrote: You can flow 126% of rated capacity, may not be a problem if you are meeting your system demand. Richard Carr, SET Branch Manager Cox Fire Protection, Inc 6555 Grace Lane. Jacksonville, Fl. 32205 [email protected] 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Richard Carr Sent: Tuesday, February 16, 2016 8:56 AM To: [email protected] Subject: RE: Oversized fire pump Do you know what the system demand is? Richard Carr, SET Branch Manager Cox Fire Protection, Inc 6555 Grace Lane. Jacksonville, Fl. 32205 [email protected] 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 8:39 AM To: [email protected] Subject: Re: Oversized fire pump The water supply goes to 0 at roughly 1900 gpm Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-608-4559 (cell) Sent using CloudMagic [https://cloudmagic.com/k/d/mailapp?ct=pi&cv=6.0.64&pv=8.2] On Tue, Feb 16, 2016 at 7:58 AM, Michael Hill <[email protected]> wrote: Do you have positive pressure when testing for 150% capacity? Mike Hill -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Matt Grise Sent: Tuesday, February 16, 2016 7:57 AM To: [email protected] Subject: RE: Oversized fire pump That might be a little too low pressure for the water company. Matt Grisé PE*, LEED AP, NICET II Sales Engineer Alliance Fire Protection 130 w 9th Ave. North Kansas City, MO 64116 *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.526.7443 cell www. AFPsprink.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Richard Carr Sent: Tuesday, February 16, 2016 6:52 AM To: [email protected] Subject: RE: Oversized fire pump If you maintaining 18 psi on the suction side with the pump running, why would you do anything? Richard Carr, SET Branch Manager Cox Fire Protection, Inc 6555 Grace Lane. Jacksonville, Fl. 32205 [email protected] 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Matt Grise Sent: Tuesday, February 16, 2016 7:42 AM To: [email protected] Subject: RE: Oversized fire pump How about a suction control valve? Matt Grisé PE*, LEED AP, NICET II Sales Engineer Alliance Fire Protection 130 w 9th Ave. North Kansas City, MO 64116 *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.526.7443 cell www. AFPsprink.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 6:41 AM To: [email protected] Subject: Oversized fire pump I am working on a facility with a fire pump that was oversized for the available public water supply. The pump is 1500 gpm at 85 psi. At 1500 gpm, the suction pressure drops to 18 psi. This is characteristic of the water supply and is not due to a shut valve or other obstruction. The pump was installed in 2009. Are there any safeguards that I should recommend for this situation? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-608-4559 (cell) Sent using CloudMagic [https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2] _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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
