NSTM 220 V3

Question 1

WHAT two tests are authorized for the determination of the quality of untreated water.

Answer 1

CONDUCTIVITY TEST

CHLORIDE TEST

Question 2

Used or excess hazardous material collected as the result of normal operation and maintenance of
diesel engine cooling systems shall be disposed of in accordance with what instructions ?

Answer 2

OPNAVINST 5090.1B, NSTM Chapter
593, and NSTM Chapter 670.

Question 3

42.4.3 Whenever treatment chemicals or makeup water have been added the engine shall be operated within how many hours?
24 hours.

Answer 3

24 hours

Question 4

A sample shall be obtained within how many minutes ?

Answer 4

10-60 of reaching operating temperature

Question 5

Samples shall be
tested within how many hour after obtaining sample?

Answer 5

1 hour after sampling

Question 6

SAMPLING FREQUENCY. Engine coolant samples for all treatments shall be obtained and tested
in accordance with what following requirements:

Answer 6

a. After freshly filling and treating.
b. After adding water to the cooling system.
c. After adding inhibitor to the cooling system.
d. At least monthly.
e. In accordance with the Planned Maintenance System (PMS)

Question 7

The monthly coolant logs shall be retained for how long abroad the ship?

Answer 7

One year

Question 8

treatment log consists of the what fol-
lowing sections:

Answer 8

a. Heading
b. Chemical Test Results
c. Chemical Treatment
d. Remarks
220-44.1.2 HEA

Question 9

(1) what does ACA mean on jack water log?

Answer 9

(after chemical addition) denotes a jacket water sample obtained after chemical treatment. This
includes samples obtained after freshly filling and treating.

Question 10

What does AWA mean on jacket water log?

Answer 10

(after water addition) denotes a sample obtained following addition of water to the system.

Question 11

What does RTE mean on jacket water log?

Answer 11

(routine) denotes a routine periodic sample.

Question 12

What does (OTH mean on jacket water log?

Answer 12

(other) sample taken for any other reason. The reason for taking the sample shall be described
in the remarks section of the log.

Question 13

what does FF mean?

Answer 13

(freshly filled) is used when a jacket water system is filled with water after being empty.

Question 14

What does CA mean?

Answer 14

(chemical addition) is used when a chemical is added to the jacket water system. An ACA sample
shall follow a CA.

Question 15

What does DRN mean?

Answer 15

(portion of coolant drained) is used when the jacket water system is partially drained. No sample
is required following DRN. The reason for draining coolant from the system shall be noted in the
remarks section. If the coolant is to be returned to the engine later, this shall also be noted in the
remarks section.

Question 16

What does D mean?

Answer 16

dumped) is used when the jacket water system is emptied. No sample is required following D. The
reason for dumping the system shall be noted in the remarks section. If the coolant is to be returned
to the engine later, this shall also be noted in the remarks section.

Question 17

What does WA mean?

Answer 17

water addition) is used when water is added to the jacket water system. An AWA sample shall
follow WA.

Question 18

6) what does RF mean?

Answer 18

refill) is used when treated coolant that was previously drained or dumped is returned to the jacket
water system. An OTH sample shall follow RF to ensure that the coolant has not become contaminated
while stored outside the engine.

Question 19

What does OTH mean?

Answer 19

(other) is used to indicate events related to the jacket water system not covered by a specific
code.

Question 20

The responsibilities of personnel regarding logs are as follows:

Tester

Answer 20

a. Maintains the diesel engine coolant log.
b. Recommends treatment action based on log entries.
c. Circles any result which is out of limits.

Question 21

The responsibilities of personnel regarding logs are as follows:

Leading Chief Petty Officer (LCPO)

Answer 21

a. Supervises the maintenance of the records and reviews the records.
b. Maintains the central file (and an adequate supply) of the logs.
c. Retains the logs for one year

Question 22

The responsibilities of personnel regarding logs are as follows:

Engineer Officer of the Watch (EOOW), Engineering Duty Officer (EDO) or Damage Control
Assistant (DCA)

Answer 22

a. Initials all test results.
b. Initials any test result which is out of limits and ensures that the cause, if known or when determined, is noted
in the remarks section.
c. Reviews and initials logs.

Question 23

The responsibilities of personnel regarding logs are as follows:Engineer Officer

Answer 23

a. Initials any test result which is out of limits.

Question 24

What are the following limits apply to coolant treated with Paxcool and Catcool:

Answer 24

Percent glycol 33-67%
pH 7.0 minimum
Chloride 100 ppm maximum
pH 8.5-10.5 for Catcool

Question 25

b. Antifreeze levels greater than 67 percent indicate over-treatment and can result what?

Answer 25

Give less freezing protection
Provide less corrosion protection
Have poor heat transfer properties

Question 26

c. A pH of less than 7.0 indicates that the buffering capacity of the coolant is spent, which will result in accel-
erated corrosion.
True or False

Answer 26

True

Question 27

d. Chloride levels above 100 ppm indicate that seawater has leaked into the cooling system, and results in a more
corrosive coolant and decreases the effectiveness of the Nalfleet 9-111. In addition, seawater contains hard-
ness which will cause scale formation on hot metal surfaces.
True or False

Answer 27

True