Is that the question of the FM, what will happen to the municipal supply when the pump is at 150% of its rating?
I never saw posted the original question/concern. Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ParsleyConsulting Sent: Wednesday, November 17, 2010 3:21 PM To: [email protected] Subject: Re: Fire Pump's Brad, I'd like to ask about your comment: "good sense to waive off sprinkler calcs as meaningless." Can you help me understand what you're referring to here? I thought the concern was valid. The FM appeared to be asking a legitimate question, such as "what happens if the flow at 150% of rated capacity draws my municipal main down below 20 psi?" The 2010 edition of NFPA-20 addressed this in the sections I quoted Brian. I wasn't there for those ROP/ROC meetings, but the new material was voted in almost unanimously. Reading that new language in NFPA-20, it also brought up a point I hadn't considered - isn't there a requirement to test the fire pump to that 150% capacity? I thought NFPA-25 called for that in the annual flow testing in 8.3.3.1. If the municipal main can't supply the water to meet that 150% figure I'd ask the same questions, I think. Perhaps a different way than happened for Brian, but I'd ask. Are you suggesting that such information is irrelevant? PARSLEY CONSULTING Ken Wagoner, SET 760.745.6181 voice 760.745.0537 fax [email protected] <mailto:[email protected]>e-mail www.ParsleyConsulting.com <http://www.ParsleyConsulting.com>website On 11/17/2010 11:29 AM, Brad Casterline wrote: > This FM's problem is > that he/she has the good sense to waive off sprinkler calcs as meaningless. > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
