10-37.
Which of the following conditions can
cause a spring-loaded reducing valve to
function improperly?
1.
Main or auxiliary valve fails to
seat properly
2.
Adjusting spring requires
readjustment or replacement
3.
Foreign matter is deposited on the
working parts of the valve
4.
Each of the above
10-38. Which of the following corrective
actions to a spring-loaded reducing
valve may require facing-off the valve
stem end to obtain the proper clearance
between the diaphragm and valve stem
end?
1.
Lapping-in the main valve
2.
Replacing the valve diaphragm
3.
Grinding-in the auxiliary valve
4.
Adjusting the valve spring tension
Question 10-39 is to be judged True or
False.
10-39.
The proper water seal level is
maintained in the upper half of the dome
on the pneumatic pressure-controlled
reducing valve by steam condensation.
10-40.
When a pneumatic pressure-controlled
reducing valve is being installed or
replaced, care must always be taken to
replace which of the following seals?
1.
The water seal in the upper half of
the dome
2.
The water seal in the lower half of
the dome
3.
The glycerine seal in the upper half
of the dome
4.
The glycerine seal in the lower half
of the dome
10-41.
Assume that, when repairing a pneumatic
pressure-controlled reducing valve, you
lose the water seal. Why must you
replace the water seal before putting
the valve back in service?
1.
To prevent the glycerine from
contacting the diaphragm
2.
To prevent the steam from
contacting the diaphragm
3.
To allow the glycerine to come
in contact with the diaphragm
4.
To allow the steam to come in
contact with the diaphragm
10-42.
If the glycerine of a pneumatic
pressure-controlled reducing valve must
be replenished and NO glycerine is
available, which of the following
actions should you take?
1.
Leave the lower seal empty for the
time being
2.
Use water for the lower seal until
you can get glycerine
3.
Use oil for the lower seal until you
can get glycerine
4.
Shut off the valve and tag it
inoperable until you can get
glycerine for the lower seal
10-43.
The discharge pressure of a reducing
valve increases above the desired
amount. What is the most likely cause
of this?
1.
A broken spring
2.
Failure of the diaphragm
3.
A change in air temperature
4.
Poor valve seating due to dirt or
water
10-44.
A check on a closed reducing valve which
has failed to deliver steam shows that
the dome pressure gage reads the same as
the outlet pressure gage.
What is the
likely cause of this problem?
1.
The diaphragm has failed
2.
The valve stem is binding
3.
The filling plug is leaking air
4.
Temperature changes are causing the
air to expand
10-45.
In case of an oil spill, which of the
following persons will be assigned the
specific responsibility to direct the
cleanup operation?
1.
CNO
2.
On-scene coordinator
3.
Area coordinator
4.
On-scene commander
Question 10-46 is to be judged True or
False.
10-46.
In the Navy, only major Navy-related
spills must be reported.
10-47.
The person responsible for maintaining a
detailed log of spill-related activities
is the
1.
CNO
2.
area coordinator
3.
on-scene coordinator
4.
on-scene commander
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