MIL-HDBK-1027/1B
Cooling spray nozzles should be directed horizontally or 30
degrees down from the horizontal and towards the wall at the
fireplace with the spray hitting ceiling and wall liners. The
nozzle should not be located over fireplace openings because the
constant water drip is not desired over the device equipment. A
minimum flow of 1.893 L/s is used for each nozzle.
Note: NAVAIRWARCEN Training Systems Division has the
final say as to the location of these nozzles. They do not want
direct spray onto their device equipment. They may require some
of the nozzles be relocated during their facility (construction
site survey) inspections. Some of the manufacturers that can
meet the above requirements are:
Spraying Systems Co., (312) 665-5000
Bete Fog Nozzle, Inc., (413) 772-0174
3.9
Roofs and Ceilings
3.9.1
Training Compartment Ceilings. Ceilings in the
training compartments should be constructed of reinforced,
lightweight concrete with a refractory coating of sprayed on
calcium aluminate cement. No alternates are acceptable. When a
steel false ceiling is required, it is to help control trainer
compartment heat and to protect the refractory coating.
3.9.2
Staging Area Roofs. Roofs over staging areas should
protect trainees from the elements, such as the hot sun in the
south and the snow in the north. Staging areas should have a
roof.
In those structures where the roof access enters the
fireplace compartment directly, the access way should be
shielded to impede the escape of hot gases. The shield should
be constructed of steel plate which should form a rectangular
box. The box should surround the inclined ladder. The bottom
edge of the box should stop 2000 mm above the training floor in
Compartments 1 and 2 of the 19F1A and 2750 mm above the floor in
the 19F3-B1 structure. The forward side of the box should be
far enough in front of the ladder so a person descending the
ladder cannot bump his head. The shield should be airtight
where it meets the ceiling.
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