But can NFPA 25 be invoked since this is a new fire pump going in and not an existing one?
--- On Fri, 8/28/09, Michael O'Brian <[email protected]> wrote: From: Michael O'Brian <[email protected]> Subject: Re: lack of suction volume To: "[email protected]" <[email protected]> Date: Friday, August 28, 2009, 5:54 PM Todd One that comes to mind was an old warehouse that the fm found with inadequate sprinkler density for plastic storage The incoming water could not flow 150% so it was tested to 100 % and the insurance was okay, the fm just wanted to make sure he could fall back on code. Case was made on options and why 150 couldn't be achieved Michael O'Brian Code Savvy Consultants www.codesavvyconsultamts.com www.inspector911.com Office: 313-618-6401 Cell: 810-459-0116 On Aug 28, 2009, at 1:27 PM, Todd Williams <[email protected]> wrote: > I am working on a warehouse which presently has very inadequate > protection. One of the improvements needed is a fire pump. I have two > options: a 1500 at 95 or a 2000 at 80. We can't go over the 95 psi or > we end up with a churn pressure over 175 psi. However, the flow drops > to 20 psi at 2400 gpm. The ESFR system I am recommending requires > about 1950 gpm, including hose streams (the fire pump will have to > supply hose streams as well). I want to use the 2000 gpm pump because > it gives me better hydraulics, however, I can't test to 150% flow. > NFPA 25 says "If available suction supplies do not allow flowing of > 150 percent of the rated pump capacity, the fire pump shall be > permitted to operate at maximum allowable discharge." Has anyone > successfully presented this to an insurance company and Fire Marshal > on a new installation and got them to go along? Any hints on how to > present it? > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, Connecticut > www.fpdc.com > 860.535.2080 > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
