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INTRODUCTION

At higher altitudes the air is thin enough to require

supplemental oxygen for human to function normally.

Modern aircraft with the capability to fly at high altitudes

usually have oxygen systems installed for the use of crew

member and the passengers.

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CHARACTERISTICS OF

OXYGEN

Colorless, odorless, and tasteless

Extremely active chemically

Oxygen does not burn, but support

combustion

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CHEMICAL OXYGEN

GENERATOR

Oxygen Candle produce oxygen Sodium chlorate + appropriate

binders + fuel = the candle

When activated it release oxygen Shape & composition determines

the oxygen flow rates

1) How does it works ?

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Chemical oxygen candles produce oxygen by heating sodium chlorate. The

sodium chlorate is converted to salt and oxygen.

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Igniter ; can be actuated electrically or by a

string ( starts the candle burning)

The core of the candle is insulated to

retain the heat needed and prevent the

housing from overheat

Filters prevent any contamination

When they start burning it cannot beextinguished and continues burning until

exhausted

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Pulling a lanyard on some chemical oxygen candles remove the safety

pin to allow the spring to actuate the igniter.

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2) Emergency Use.

The generator are located inside the PSU

Masks are located with these generators and are

enclosed

When depressurization

masks drop automatically easily accessible to the user

The lanyard pulled, release the lock pin which

enable the striker to hit the igniter and start the burning

Gives 15-20 minutes oxygen supply before the

aircraft reduces the height to safe altitude.

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ADVANTAGES OF THE

CHEMICAL GENERATOR

Ideal size

Minimal maintenance requirement

Efficient product

Almost unlimited shelf life

Not require any special storage conditions

Less weight

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Passenger Service Units

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SERVICING

Disposable masks should be replaced after each use

Permanent masks should be cleaned by washingthem with cloth wet with a lukewarm detergent

solution The mask & hoses should be checked for leaks, holeor rips

Replace rather than repair

Store & protect from dust and dampness

Replace generators if they are run-out or leaks

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CONCLUSION

The chemical oxygen generator is the best

emergency oxygen supplier for aircraft that fly at

extremely high altitudes.

EMERGENCY + C.O.G.S. = LIVE

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THE END

THANK YOU