NFPA 409 latest version states two fire pumps are required for Aircraft Hangars. Does NFPA 20 require alternate power for each individual fire pump? How does NFPA 20 define independent power source? Separate tap off the main? Different substation?
NFPA 20 doesn't define independent power source. But it does define Alternate Power, On-Site Power Production Facility, On-Site Standby Generator, and Standby Power.
Informational Note: See Sections 9.3.2 and A.9.3.2 from
NFPA 20, Standard for the Installation of Stationary Pumps for
Fire Protection, for guidance on the determination of power
Retrieving data ...