Site Development. The gas chamber should be a
separate structure and should be located at least 15 m away from
any building or facility to prevent the migration of tear gas
into an occupied area or building. Consideration should be
given to the prevailing wind direction. The gas chamber
discharge should be sited so that tear gas is not blown to
occupied areas or buildings located downwind.
Architectural. The floor plan for the gas chamber is
provided in Appendix H, Figure H-2.
Layout. Layout of the gas chamber should conform to
the following criteria:
a) The gas chamber should be a 120 sq. m based on
9144 mm gas chamber room, a decontamination station, a storage
room, and a mechanical room.
b) The building should consist of concrete masonry
unit wall construction. Ceiling should be a 2450 mm high
gypsum-board type. Protective sealant should be applied to both
the walls and the ceiling of the gas chamber room. Sealant
should be chemically-resistant to tear gas (vapor and powder)
and capable of preventing migration of tear gas and water
through the walls and the ceiling of the gas chamber room.
Protective sealant should be an epoxy or urethane coating
c) There should be means of access to the space above
the ceiling, which will be used for maintenance purposes.
Access to the ceiling should be via the storage locker or the
mechanical room. The doors should be the insulated, hollow
metal type. Each door should be provided with a clear 460 mm by
460 mm shatterproof window. There should be no windows in the
walls. Provide emergency exit doors with panic hardware.
Decontamination Station. Use the decontamination
station for sterilizing the gas masks. The decontamination
should consist of an iodine-water solution sink for sterilizing
the gas masks, a rinse water sink for rinsing the gas masks, and
a drying counter or table for hand drying the masks. The sinks
and counter or table should be stainless steel.