7-20.
What component acts as a surge
tank and an accumulator for the
OBOGS?
1.
Plenum
2.
Reservoir
3.
Heat exchanger
4.
Oxygen monitor
Learning Objective:
Describe safety
precautions and handling
procedures for liquid
oxygen (Lox) storage
tanks, transfer lines, and
valves.
7-21.
LOX storage tanks consist of what
components?
1.
Single containers
2.
High density containers
3.
Outer and inner containers
4.
Low density containers
7-22.
The annular insulated space
between containers of LOX storage
tanks is vacuum pressurized.
1.
True
2.
False
7-23.
Significant waste of LOX by the
transfer hose/line is due to what
factor?
1.
Leaks
2.
Cooldown
3.
Improper connection
4.
O-ring failure
7-24.
Flexible metal hose under high
pressure reacts in what manner?
1.
It expands in length only
2.
It expands in diameter only
3.
It expands in length and
diameter
4.
It does not expand
7-25.
LOX should never be trapped in a
line between closed valves
because of what occurrence?
1.
The valves will freeze
2.
The line will freeze
3.
Excessive pressure can
develop in the line
4.
Pressure in the tank will
bleed off
7-26. Which of the following components
of a LOX storage system causes
the most trouble?
1.
Relief valve
2.
Low temperature valve
3.
Servicing hose
4.
Rupture disc
7-27. Which of the following methods is
most effective in insulating LOX
valves?
1. Vacuum jacketing
2. Fiber glass insulation
3. Polyethylene foam insulation
4. Heater jacketing
Learning Objective:
Describe oxygen servicing
equipment to include
safety precautions,
service trailers, and
system servicing.
7-28. What should be the first aid
provided if LOX is splashed on
the skin?
1.
Coat the area with petroleum
jelly
2.
Wrap the area with dry cloth
3.
Wrap the area with damp cloth
4.
Flush the area with water
7-29. Which of the following valves
must be in the open position when
a LOX oxygen trailer is not in
use?
1.
Buildup
2.
Supply
3.
Fill drain
4.
Vent
7-30. In the LOX handling area, what is
the safe distance permitted for
smoking or open flames?
1.
25 feet
50 feet
2.
3.
75 feet
4.
100 feet
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