It sounds like the 1,000 gpm standpipe demand is the worst case. If so, you should be fine and there should be instructions/signage provided at the pump about limiting flows during pump tests. Looks like a Mechanical Engineer was involved in replacing the previous pump; or a contractor talked someone into a bigger sale (or both).
Mark A. Sornsin, P.E. | Karges-Faulconbridge, Inc. | Fire Protection Engineer | Fargo, ND | direct: 701.552.9905 | mobile: 701.371.5759 | http://www.kfiengineers.com -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 8:12 AM To: sprinklerforum@lists.firesprinkler.org 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 <rc...@coxfire.com> 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 rc...@coxfire.com 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Richard Carr Sent: Tuesday, February 16, 2016 8:56 AM To: sprinklerforum@lists.firesprinkler.org 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 rc...@coxfire.com 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 8:39 AM To: sprinklerforum@lists.firesprinkler.org 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 <mi...@phoenixfp.net> wrote: Do you have positive pressure when testing for 150% capacity? Mike Hill -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Matt Grise Sent: Tuesday, February 16, 2016 7:57 AM To: sprinklerforum@lists.firesprinkler.org 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:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Richard Carr Sent: Tuesday, February 16, 2016 6:52 AM To: sprinklerforum@lists.firesprinkler.org 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 rc...@coxfire.com 904-781-8227 -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Matt Grise Sent: Tuesday, February 16, 2016 7:42 AM To: sprinklerforum@lists.firesprinkler.org 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:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd Williams Sent: Tuesday, February 16, 2016 6:41 AM To: sprinklerforum@lists.firesprinkler.org 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 Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. 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