I've always understood it to be allowed even for a non-testing situation if approved. The 2019 edition clarified this somewhat by breaking out automated testing as essentially ok even without specific approval and then a separate line item for when approved by the AHJ. In places where the pump may not readily get shut off during an accidental start the 10 minute timer makes a lot of sense. Timer only starts when shutoff pressure is reached and start pressure isn't dropped below again for 10 minutes, and even then pump would immediately restart if pressure dropped again. I've always felt we were pretty conservative in how rarely it's utilized.
Mike Morey CFPS 3229 . NICET S.E.T. 123677 Project Manager . Fire Protection Group Shambaugh & Son, LP an EMCOR Company 7614 Opportunity Drive . Fort Wayne, IN . 46825 direct 260.487.7824 / cell 260.417.0625 / fax 260.487.7991 email [email protected] -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of BF Blake via Sprinklerforum Sent: Thursday, November 18, 2021 2:27 PM To: [email protected] Cc: BF Blake <[email protected]> Subject: Fire Pump Shutdown BE ADVISED - This email originated outside EMCOR. Greetings Forum Members Do we believe it is the intent of NFPA 20 TC is for 10 minute automatic shut down (when enabled) of fire pumps to apply only during churn (e.g. dead head, closed loop, testing) conditions or to any condition to include sprinkler flow (e.g. 1/2" 5.6K ITC flow)? Is the intent to protect the fire pump from "burn out"? Is the intent to run pumps to failure (destruction) or is the intent, with 10 minute auto shut down, where permitted, to attempt to preserve the pump? Thanks Byron NATO Facility UFC Criteria 03-600-01 (2013) Applicable Słupsk, Pomorskie, Poland _______________________________________________ Sprinklerforum mailing list [email protected] https://urldefense.com/v3/__http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org__;!!FaxH778!OB4oaFijo2IZH9_K4Ka5cxdQY-nT0eZ81GZKqVwxU8Aeda74ceQbgz-mcJ3IOTAl$ This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
