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approximately 8 liters of oxygen over a short duration of less than 20 seconds.
It is contained in a small stainless steel cylinder affixed to the base of the KO2
canister. The discharge is directed into the interior of the KO2 canister. The
chlorate candle is initiated by a spring loaded plunger striking a small
percussion primer when the lanyard attached to the hood adjustment strap is
pulled.
Following actuation, the hood will inflate over a 15-20 second period. After
this period, the starter candle will cease flowing and the only sound will be
slight rustling of the fabric on each inhalation and exhalation. Dependent upon
breathing rate, there will be a slight exhalation resistance as the exhaled breath
is forced through the KO2 canister. Heat is produced by both the chemical air
regeneration process and transfer of body heat during the rebreathing cycle.
Heat buildup within the hood is normal and dependent upon the amount of work
performed. There should be no irritation or strong unusual odors within the
hood.
AIRCRAFT GENERAL
Sec. 6.1 Page 98 737
Rev. 11/15/02 #41 Continental Flight Manual
The equipment is designed to accommodate the requirements of the most
demanding situations. It is optimized to provide a minimum of 15 minutes
duration for the heaviest workload (duration is 15 to 30 minutes depending on
user's work rate). If the PBE is worn to exhaustion of the chemical regeneration
system, this will be evidenced by a gradual reduction in the expanded volume of
the hood until the point that the hood is collapsed tightly around the head at the
end of a full inhalation. At this point, the wearer should immediately retire to a
safe breathing area, clear of flame and toxic fumes and remove the device.
Operation
Remove the aluminized vacuum-sealed pouch from the protective canister.
Tear open the pouch and don the hood.
Pull the adjustment straps to secure the hood. This motion automatically
activates the chemical oxygen system by removing a lanyard pin from the
chemical canister located at the back of the hood.
The generated oxygen will inflate the hood, providing the initial breathing
atmosphere. Pull the straps again if actuation fails. (The hood will continue to
function, although the initial breathing atmosphere is not available. Stick
fingers under the neckseal to allow a lung inhalation to enable breathing until
the chemical regeneration system begins producing a surplus of oxygen.)
The initial generated oxygen inflates the hood, providing breathable
atmosphere. As the wearer begins to breath normally, the exhaled breath is
directed through the chemical canister, which removes water vapor, carbon
dioxide, and adds oxygen before the gas is returned to the interior of the hood
for inhalation.
Excessive leakage of the oral / nasal cone or the neckseal may result in
excessive buildup of carbon dioxide. Signs of excessive buildup are: rapid or
labored breathing, moisture of fogging on the visor, strong irritating odors, and
eye or respiratory tract discomfort. In this instance, move away from immediate
contact with the fire, open flame / toxic fumes, and remove the hood. Don an
alternate hood if required.
AIRCRAFT GENERAL
737 Sec. 6.1 Page 99
Flight Manual Continental Rev. 11/15/02 #41
77376063
KO
BED
2
NACLO3
CANDLE
Exhaled Breath W/CO 2 & Water Vapor
Oxygen
Mask Cone
Inhalation
Valve
Relief
Valve
Exhalation
Valve
Neckseal
AIRCRAFT GENERAL
Sec. 6.1 Page 100 737
Rev. 11/15/02 #41 Continental Flight Manual
EMERGENCY EVACUATION ROUTES
Emergency evacuation may be accomplished through four entry / service doors
and >>@B two overwing escape hatches and CD four overwing
escape hatches. Flight deck crewmembers may evacuate the aircraft through
two sliding flight deck windows.
Flight Deck No. 2 Windows
Flight deck sliding windows are opened by squeezing the lock release in the
handle, rotating the handle inward and sliding the window aft until it locks. The
right hand window has provisions for exterior access as well.
Flight Deck Escape Straps
An escape strap is attached to a compartment above each flight deck sliding
window. The straps may be used by a crewmember to lower himself to the
ground.
AIRCRAFT GENERAL
737 Sec. 6.1 Page 101
Flight Manual Continental Rev. 11/15/02 #41
EMERGENCY EVACUATION ROUTES
AIRCRAFT GENERAL
Sec. 6.1 Page 102 737
Rev. 11/15/02 #41 Continental Flight Manual
77376060
Caution: Check that the strap is anchored to the aircraft structure before
dropping it out the window.
　
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