Please advice the recommended design density and operating time for a foam system(i.e for for Deluge system using open nozzle & and a system using closed head sprinklers) used as fire suppression system in a Emergency diesel generator rooms in commercial buildings, Small Industrial Occupancy.
Also, Please advice whether a foam discharge time of 10 minutes is sufficient or else what would be the minimum time of foam discharge which shall be considered for a emergency diesel generator room.