Liquid Oxygen Breathing Systems(LOX)

Question 0

Liquid oxygen is a pale ____, non viscous ____-like fluid.

Answer 0

Pale blue, water-like

Question 1

Used on what plane?

Answer 1

HC-130J (H is the other model not used)

Question 2

Liquid oxygen boils at?

Answer 2

-279 F (-183 C)

Question 3

At atmospheric pressure it is ____ times heavier than water and weighs ____ pounds per gallon.

Answer 3

1.14 times heavier

Weighs 9.527 pounds per gallon

Question 4

When converted to gaseous oxygen at ambient temperature it expands to approximately ____ times its original volume.

Answer 4

860 times

Question 5

One cubic foot of liquid oxygen expands to approximately____ cubic feet of gas at____F (____C) at sea level

Answer 5

860-cubic feet at 70F (21C)

Question 6

How should you open valves when servicing lox?

Answer 6

Initially be completely open, then immediately closed approximately 1/4 – turn to prevent the valves freezing in the open position

Question 7

Protective clothing

• face shield?
• gloves?
• coveralls?
• apron?
• shoes?

Answer 7

• face shield-ensure all personnel involved in servicing are wearing a face shield over safety glasses.
• gloves-loose fitting thermal insulated or leather welder type gloves
• coveralls-Cotton coveralls, free from any oil, grease, or other combustible material.
• apron-constructed of inpermeable cotton duck, coated with rubber. The apron will be tied in such a way that it will be easy to remove in case of an emergency.
• shoes- Boots should be free of any oil, grease, or other combustibles they should also be easily removed in an emergency

Question 8

LOX cart

• Approximate weight when full
• Designed to store how many gallons of liquid oxygen?

Answer 8

• Weighs 1,200 pounds when full

- Designed to store 50 gallons of liquid oxygen with a low evaporation rate