This is a pump that is not needed at all and should have never been installed. The building is a 3 story retirement home with a system designed per NFPA 13, which includes attic protection. There is 90 psi at the base of the riser and the curve appears to be flat enough to design a system for this building with relative ease. The other curious thing is that the hydraulic placards state that the attic system (anti-freeze) requires 283 gpm at 1.8 psi and the first floor requires 260 gpm at -3.3 psi (obviously how the calculations showed up). The pump test showed 355 gpm at 100 psi at the pump discharge. So somehow this system would probably work.
Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com > On Oct 30, 2013, at 11:15 AM, <rfletc...@aerofire.com> wrote: > > It's probably that we don't normally test beyond 150%. There is no need to go > beyond 150%. We did an extended test of a 1500 gpm diesel with PLD just to > see what it was capable of. It was still providing boost at 4000 gpm, very > impressive. > Ron F > -----Original Message----- > From: sprinklerforum-boun...@lists.firesprinkler.org > [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of > craig.pr...@ch2m.com > Sent: Wednesday, October 30, 2013 7:57 AM > To: sprinklerforum@lists.firesprinkler.org > Subject: RE: 150 gpm pump test > > Improperly sized pump perhaps? > > Craig L. Prahl, CET > Fire Protection Group Lead > CH2MHILL > Lockwood Greene > 1500 International Drive > Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > CH2MHILL Extension 74102 > craig.pr...@ch2m.com > > >> I did a test on a 150 gpm at 70 psi vertical inline pump (Aurora) this >> morning. When I opened the 2-1/2" hose valve completely, it was >> flowing at >> 355 gpm (net 26 psi). I was surprised that I could flow that much >> water. Is this common for smaller pumps? I've never tested a pump this small >> before. >> >> Todd G Williams, PE >> Fire Protection Design/Consulting >> Stonington, CT >> www.fpdc.com > _______________________________________________ > 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
