2-9.
2-10.
2-11.
2-12.
2-13.
2-14.
During which leakage test is supply
nitrogen pressure tested for leakage?
1.
Inward leakage
2.
Outward leakage
3.
Rotameter leakage
4.
Differential leakage
How often do you perform the outward
leakage test?
1.
Daily
2.
Biweekly
3.
Weekly
4.
Monthly
To test for leakage on the supply
pressure gage, you should pressurize
the gage and wait 2 minutes. How
much leakage, if any, is allowed?
1.
5 psi
2.
10 psi
3.
15 psi
4.
None
What is the minimum pressure range of the
regulated high-pressure system?
1.
0 psig
2.
100 psig
3.
250 psig
4.
500 psig
The gage guard that protects the
low-range and high-range leakage
rotameters is set to relieve at what
maximum pressure?
1.
50 ± 5 psig
2.
170 ± 5 psig
3.
180 ± 5 psig
4.
250 ± 10 psig
Which of the following gages
indicates the gage guard pressure
that protects the low-range and
high-range rotameters?
1.
Regulated low-pressure gage
2.
Regulated high-pressure gage
3.
Supply gage
4.
Differential pressure gage
2-15.
When testing the regulated
2-16.
2-17.
2-18.
2-19.
high-pressure system, you determine
that there is a leak in one of your
ON/OFF valves. The leak will be
indicated on which of the following
gages?
1. N2 inlet pressure gage
2. N2 outlet pressure gage
3. Differential pressure gage
To bleed the regulated high-pressure
system, you should use which of the
following valves or regulators?
1.
High-pressure regulator only
2.
System bleed valve only
3.
Both 1 and 2 above
4.
Inlet bleed valve
To check the regulated high-pressure
system for leaks, you should turn the
supply cylinder ON. This pressure
can be read on which of the following
gages?
1.
Low-pressure gage
2.
High-pressure gage
3.
Both 1 and 2 above
4.
Differential pressure gage
When testing the high pressure system
for leaks, what period of time must
you wait before reading and rereading
the high-pressure gage?
1.
1 min
2.
2 min
3.
3 min
4.
5 min
What is the minimum pressure range of
the regulated low-pressure nitrogen
system?
1.
0 to 180 psig
2.
0 to 250 psig
3.
0 to 500 psig
4.
0 to 1800 psig
Learning Objective: Identify the
test stand used to test LOX con-
verters, test stand inspections,
internal parts, and general
maintenance.
7
