**************************************************************************
NOTE: Pre-action sprinkler piping systems require
supervision.
**************************************************************************
Provide local [100 mm4 inch] electric alarm [bell] [horn] [_____] to
indicate trouble [or failure of the [detection system] [or] [pre-action
sprinkler piping system]]. [Alarm shall operate when air pressure in the
dry-pipe system drops halfway from the normal pressure to the tripping
point.] Also connect trouble alarm into the building fire alarm control
panel to indicate "trouble" on a separate zone labelled "Foam System
Trouble."
2.13
TANK MOUNTED AIR COMPRESSOR
**************************************************************************
NOTE: Include for projects involving pre-action or
dry-pipe sprinkler piping systems only.
**************************************************************************
Provide an approved automatic type electric motor driven air compressor
including pressure switch, air piping, and [38 liter] [10 gallon] [_____]
minimum capacity tank. Compressor shall have a minimum capacity capable of
charging the complete sprinkler system to normal system air pressure within
30 minutes. Provide each system with an approved automatic air pressure
regulating device.
2.14
AFFF CONCENTRATE
**************************************************************************
NOTE: Select percentage when specifying MIL-F-24385
concentrate. Consult the facility fire department
or the Division Fire Protection Engineer.
MIL-F-24385 does not cover alcohol resistant-type
concentrate. Specify UL listed alcohol
resistant-type concentrate if there is a possibility
of alcohol-based liquids being present. When
alcohol resistant foam is required, it must be used
at the UL listed application rate. Currently 3
percent alcohol resistant-type concentrate is not
available.
**************************************************************************
[MIL-F-24385, [3] [6] percent] [UL listed alcohol/polar solvent resistant
type].
2.14.1
Concentrate Fill Pump
Provide one pump to fill foam system tank. Pump shall have a minimum flow
rate of 26.4 L/m 7 gpm. Pump shall be complete with 115 VAC motor, fused
switch, power cord with plug and 3 meters 10 foot minimum suction and clear
discharge hoses.
2.15
DIAPHRAGM PRESSURE PROPORTIONING EQUIPMENT
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NOTE: Select the method of proportioning best
suited for the project.
SECTION 13958N
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