I'd like to add to this question from David. NFPA-13R (2010 ed), Figures A.9.3 (a, b, c) shows different acceptable arrangements for the water supply. Figure (c) shows the use of one city tap and a shared water meter to supply both domestic and sprinkler systems.
If a "pump" is installed after the water meter and before the tee to boost the entire supply to both domestic and sprinkler systems, then does this "pump" have to be a "fire pump" and meet the requirements of NFPA-20...or...can it be a "domestic pump" since it is being used to boost the domestic water pressure? rick matsuda city of dallas bldg inspection dept -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Blackwell Sent: Thursday, January 13, 2011 3:58 PM To: [email protected] Subject: 2010 NFPA 13R 9.3 The code text in 2010 NFPA 13R 9.3 mentions only "pump", not "fire pump" as the minimum standard requirement. Is that correct? [I read the commentary to both 9.3 and 9.4 and began to doubt whether a non-fire pump could be used. It is clear that 9.4 code requires, where used, a fire pump must meet NFPA 20; however, I don't read 9.3 as actually requiring a fire pump be used to meet the "pump" indicated in 9.3(1) or 9.3(4).] Perhaps my brain will work better in the morning while still fresh... Respectfully, David W. S. Blackwell, II, PE, CFPE Engineering ---------------------------------------------------------------- Office of State Fire Marshal 141 Monticello Trail Columbia, SC 29203 Phone: 803.896.9833 Fax: 803.896.9806 Email: [email protected] OSFM Website: http://www.llr.state.sc.us/firemarshal.asp ---------------------------------------------------------------- _______________________________________________ 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)
