Q4.
What is the maximum amount of time the
WARNING
AN/PDR-65 will operate on fully charged
batteries?
Extreme care must be taken when
performing routine maintenance on radiac
1.
10 hours
instruments. Some of the instruments have
2.
20 hours
complicated electronic circuits that can carry
high voltages, which can present a hazardous
3.
30 hours
condition for personnel. Other instruments
4.
40 hours
contain radioactive material inside that
Q5.
The DT-60/PD is a gamma radiation
presents a potential hazard if untrained
dosimeter with a usable range of 10 to 600R.
personnel disassemble them. Remember that
all radiac equipment that operates on direct
1.
True
current is designed so you can replace the
2.
False
b a t t e r i e s w i t h o u t ex p o s i n g t h e i n t e r n a l
Q6.
No hand-held radiac available for military
dangerous.
use will measure both radiation intensity
and dose.
The following checks should be made at least
1.
True
monthly:
2.
False
Battery check.
Function check.
RADIOLOGICAL SURVEYS
Ensure instrument is turned off.
Learning Objective: Recall the different types of
Ensure instrument is stored in a cool, dry place.
radiological surveys.
You may change the batteries for the radiac if
they are weak. However, changing batteries
Radiological surveys are one of the key elements
does not eliminate the need for routine
that provide the ship's personnel information needed
maintenance.
for the recovery phase of operations. Radiological
surveys are taken to determine radiation levels and
REVIEW QUESTIONS
deposition patterns after the ship has been
contaminated by nuclear fallout.
Q1.
Nuclear radiation cannot be detected by any
There are several different types of surveys. It is
of the five senses.
essential that the exact time and location of each
measurement is recorded and that the serial number of
1.
True
the RADIAC instrument used is indicated. The
2.
False
Radiological Survey Form shown in table 11-1
p r ov i d e s a f o r m a t t h a t c a n b e u s e d t o r e c o r d
Q2.
Which of the following is NOT a performance
measurements from any type of survey.
function of a radiac device?
Survey data is used to accomplish some critical
1.
Detect beta and gamma radiation
tasks. These tasks include the following:
2.
Measure the intensity of radiation
1.
Detection of intrusion of radiological
3.
Measure radiation dose
contamination into the interior of the ship.
4.
Detect neutron and X-ray radiation
2.
Calculation of safe stay times for personnel at
vital stations and on decontamination or
Q3.
The AN/PDR-43 unit has three-meter scales.
monitoring teams.
1.
True
3.
Identification of topside locations that may
2.
False
require decontamination.
11-6
