9.3.2 is independent from 9.3.1. It's not a subset of 9.3.1 ie 9.3.1.1. In other words you don't need to be "beyond the pumping capacity of the fire department apparatus" to require alternate power. The appendix offers some characteristics of reliable power. This appears to be an often overlook issue.
"9.3.2* Other Sources. Except for an arrangement described in 9.3.3 , at least one alternate source of power shall be provided where the normal source is not reliable." Disclaimer: This email shall not be interpreted as representative of my positions on the NFPA 101 and NFPA 5000 committees. Jack Fairchild -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Jay Stough Sent: Thursday, March 19, 2015 7:54 AM To: Sprinkler Forum Subject: Pump transfer Switch When is a transfer switch required by the IBC or IFC? We have a customer that has a 7 story building with a fire pump (only 50 psi @ 750 with a street static of 52). It has a problem with the controller and parts are no longer available. We gave them a price to change out with a new controller, like for like, which includes a transfer switch. Now they want a price to replace without a transfer switch. I see that NFPA 20 (2007) 10.8.1 says to install a transfer switch if required by the AHJ or 9.3.2. 9.3.2 lays out the requirements for alternate power. I see that 9.3.1 says an alternate power is required when the height of the building is beyond the pumping requirements of the fire dept. Of course as part of the contract he wants us to get the approvals for removing the transfer switch. I am trying to see what I am up against in trying to remove this switch. *Jay Stough* NICET IV LAYOUT NICET III ITM _______________________________________________ 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
