Preventive maintenance involves
continuous inspections of equipment to
detect possible symptoms of malfunctions
which may be indicated by which of the
1. Unusual noises
Abnormal temperatures, pressures,
and speeds 4.
Each of the above
11-9. After showing a normal
reading for a long time, a
pressure gage on a
suddenly shows a sharp rise in pressure.
What is the Possible cause of the rise?
of the gage 2.
Disorder of the governor
Internal mechanical failure
Each of the above
11-10. Which of the following
factors may explain why a
defective pump may lose its
pumping capacity before any external
evidence of failure is noticeable?
1. The designed safety margin
of the Pump
Improper setting of the pump
Disorder of the safety devices
Disorder of the pump gages
material failure is discovered in one
of the fuel pumps. Which of the
following is the proper correct actions
you should take?
Inspect all similar pumps for the
Repair or replace the damaged pump
3. Clean out
the entire fueling system 4.
Replace all similar pumps
often should an oil sample be taken
from all auxiliary machinery and tested
for water contamination?
11-13. Lubricating oil which
contains saltwater will damage all
types of bearings. To which of the
following bearings types is
contaminated oil particularly harmful?
1. Pivoted shoe-type thrust
Piston pin bearings
Simulated casualty exercises are often
rendered ineffective because of which of
the following reasons?
use of dry runs
Inadequate advance preparation
3. Lack of
Personnel with battle experience
number of simulated casualties
Learning Objective: Recognize the
methods and importance of preventing
Continuous operation of equipment under
casualty conditions is a responsibility
of which of the following ship's
Commanding officer 3.
of the watch What is the most
important factor in efficient
casualty control procedures? 1.
Speed in restoring damaged units
Accuracy of corrective action
Status of personnel training
4. Speed in
cross-connecting an intact system
with a partially damaged system
During which of the following
circumstances may an intact propulsion
plant be cross-connected with a damaged
When the auxiliary units become
When casualties have become
3. When this procedure will not
endanger the intact plant
4. All of
the above During damage control
operation, the arresting secondary
damage effects to engineering
plant units is known by which of
the following terms?
Limited corrective action