10-62.
10-63.
10-64.
10-65.
On large ships, the goal of the CHT
system is to provide the capacity to
hold shipboard sewage generated over
what period of time?
10-66.
1.
24 hr
2.
12 hr
10-67.
3.
6 hr
4.
3 hr
All internal surfaces of CHT tanks must
be coated in accordance with which of
the following publications?
1.
Naval Ships' Technical Manual,
Ch 631 (9190)
2.
Naval Ships' Technical Manual,
Ch 503 (9470)
3.
NAVFAC P-908
4.
OPNAVINST 6240.3E
Comminutor and aeration systems are used
with ships whose holding tanks'
capacities are at least
1.
1000 gal
2.
2000 gal
3.
3000 gal
4.
4000 gal
A high level alarm sounds.
What
immediate action should you take to
prevent flooding of the spaces?
1.
Close isolation valves on the upper
and the lower drains
2.
Open the isolation valves on the
upper and the lower drains
3.
Close isolation valves on drains
below the overboard discharge and
divert the upper level drains
overboard
4.
Open isolation valves on drains
below the overboard discharge and
divert the upper level drains
overboard
10-68.
Question 10-66 is to be judged True or
False.
Exposure to continued or intermittent
sounds can cause loss of hearing.
Loss of hearing sensitivity generally
occurs in which of the following ranges?
1.
6,000 to 10,000 Hz
2.
4,000 to
6,000
Hz
3.
3,000 to
4,000
Hz
4.
500 to
3,000 Hz
What is the purpose of
conservation program?
the hearing
1.
Identify noise sources
2.
Reduce exposure of personnel to
potentially hazardous noises
3.
Test the hearing of noise-exposed
personnel
4.
Provide hearing-conservation devices
Question 10-69 is to be judged True or
False.
10-69.
All personnel who are exposed to
potentially hazardous noise may wear
hearing protection devices at their own
discretion.
66