I agree with Todd, one other consideration, I would recommend that the fire pump be tested to assure that it is performing per factory specifications from churn to 150% of it rating. Once you assured yourself that the pump is performing within spec I would use the flow and psi results to design the new system. Thanks. Ed Cyr
On Mon, Sep 14, 2015 at 3:28 AM, Todd - Work <[email protected]> wrote: > It depends on the arrangement. If the pump feeds a yard system including > hydrants and sprinklers, then the pump test is the best way. If the > hydrants are > fed before the pump suction, that creates an issue of hose demand. In a > perfect > world, you would have a current hydrant flow test and use the pump test to > determine the pump curve. You would start the calc at the hydrant flow > test, > take the hose stream demand from the hydrant and run the net flow through > the > pump. However, this is not a perfect world. Sometimes you are only given a > pump > test to work with. If that is the case, I look for the most demanding > point past > the discharge and leave a larger gap in the calc than normal. > > Sent using CloudMagic [ > https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2] > On Sun, Sep 13, 2015 at 10:08 PM, [email protected] > <[email protected]> wrote: > When we have a project to replace or modify the sprinkler system in a > building that has a fire pump, I have always been of the opinion that I can > get a better water supply test by doing a fire pump test than I can get > from a hydrant test. With a fire pump test, I have the pressures and flows > for my new sprinkler system at the fire pump discharge. Any opinions? > > > *Success Through Code Compliance* > > *Rahe Loftin, PE * > *Regional Fire Protection Engineer* > *General Services Administration* > *Region 7 - TX, OK, NM, AR, LA* > *Facilities Management & Support 7PMC* > *c - 817-371-3102* > *o - 817-978-7299* > _______________________________________________ > 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
