(OXYGEN SYS) NAVAIR

Question 1

(NAVAIR) aircraft oxygen system categories

Answer 1

1. Gaseous oxygen systems
   a. low pressure (0 - 500psi)
   b. high pressure (0 - 1800psi)
   c. reduced high pressure
2. Liquid oxygen systems

Question 2

(NAVAIR) all operations involving the handling of LOX shall be performed with how many people?

Answer 2

2 or more qualified persons.

exception:
removal and replacement of aircraft LOX converters

Question 3

(NAVAIR) never lubricate oxygen valves, regulators,
gauges, or fittings with oil or any substance except
what two approved oxygen compatible lubricants?

Answer 3

1. MIL-PRF-27617 Krytox

2. MIL-PRF-27617 Tribolube

Question 4

(NAVAIR) Krytox and Tribolube shall not be used on
_________ or ________ fittings in applications
where shear stress would be encountered.

Answer 4

aluminum or magnesium fittings

Question 5

(NAVAIR)_______ shall be used specifically

as a thread sealant.

Answer 5

Teflon tape.

Molybdenum Disulfide shall be used on stainless steel flared fittings and on those applications where Teflon Tape cannot be used

Question 6

(NAVAIR) Only oxygen conforming to _______________shall be used in aircraft gaseous oxygen systems.

Answer 6

MIL-PRF-27210, Type I

Question 7

(NAVAIR) aviator’s breathing oxygen supply cylinders
can be readily identified by their ___________and
_________wide white band around the upper circumference of the cylinder. OXYGEN, AVIATOR’S shall

Answer 7

green color and 3-inch wide

Question 8

(NAVAIR) Cylinders that are less than ____ inches in
outside diameter and less than ____ feet long
do not require a hydrostatic retest.

Answer 8

2 inches in outside diameter & 2 feet long

Question 9

(NAVAIR) Hydrostatic test interval for P-3 fixed

installed oxygen cylinders shall not exceed ____ years.

Answer 9

8 years

Question 10

(NAVAIR) A drip/drain pan with sides at least
______ inches high and free from dirt, grease,
oil, fuel, hydraulic fluid, and other hydrocarbons,
shall be used when draining LOX converters.

Answer 10

6 inches high

Question 11

(NAVAIR) what must you wear when handling LOX?

Answer 11

goggles or a face shield

Question 12

(NAVAIR) Keep open flames at least _____ feet away from oxygen storage tanks or oxygen equipment.

Answer 12

100 feet

Question 13

(NAVAIR) LOX containers must be stored apart from containers of other gases or liquids and must not be stored within ______ feet of flammable material of any kind.

Answer 13

50 feet

LOX storage containers must be protected
from excessive heat and direct rays of the sun

Question 14

(NAVAIR) color shall be in contrast to walls and ceilings to minimize _________.

Answer 14

minimize eye fatigue.

Question 15

(OXYGEN MAINTENANCE SHOP) personal cleanliness.

Answer 15

personnel with the following conditions shall be assigned temporary jobs outside the shop until the are sufficiently recovered.

1. colds
2. temporary coughing
3. sneezing
4. severe sunburn

Question 16

(NAVAIR) full-face oxygen & smoke mask

Answer 16

• supplied in one size
• fitting is accomplished by adjusting 5 adjustable head straps
• mask may be worn with earphones or a protective helmet.

Question 17

(NAVAIR) quick-donning oxygen mask

Answer 17

• rapid removal and donning with one(1) hand in the event of an emergency.