MIL-HDBK-1027/1B
to the structure. Its location should be clearly indicated on
the facility drawing. The sensor should provide the analog
pressure signal to the gauges in the instructor's station and
should have a DTC connection.
3.11
Ventilation
3.11.1
General.
The facility exhaust system serves three
main functions:
a)
Continuously purges the structure of unburned
fuel;
b) Provides the secondary air necessary for complete
combustion and realistic fire characteristics; and
c)
Collects products of combustion for possible
treatment.
Ventilation air should be induced into each building
by the exhaust fans. Provide air test ports throughout the
system for testing and balancing. Burner rooms should be
ventilated to control heat buildup and to cool the room for
summer temperature control. Ventilation flow rates (L/s) come
from NAVAIRWARCEN Training Systems Division and fleet project
teams. Provide details on how to seal space around high
temperature ducts at wall, floor, and roof penetrations. High
temperature exhaust fans should have total enclosed fan cooled
motors, when located outside in the weather.
3.11.2
Purge. Purging of the facility exhaust system should
meet the following criteria:
a) Ambient air should enter the building through
louvers in the crawl space perimeter. When there is a burner
room adjacent to the crawl space, the crawl space perimeter
should be left open to the burner room and the louvers located
in the burner room exterior wall. The building design should
allow free air movement in the burner room and crawl space and
prohibit the possibility of any stagnant air spaces where
unburned fuel could accumulate. Fuel is heavier than air and
could create an explosive situation if not flushed away.
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