*TB 56- Radiation Protection Principles

Question 1

Radiation:
_____ radiation particles can travel several meters in air, can penetrate skin and tissue, and require a few millimeters of aluminum or a thick book to stop them. These particles can be both an external and internal hazard.

Answer 1

Beta radiation

Question 2

Radiation:
_____ radiation particles are the most penetrating type of radiation and can travel many meters in air and many centimeters in tissue. These particles can be both an internal and external hazard. An x-ray is an example of this type of radiation.

Answer 2

Gamma radiation

Question 3

Radiation:

Roentgen _____ is that amount of radiation the total body is exposed for one hour.

Answer 3

Dose

Question 4

Radiation:

What are the four principle modes of radiation entry into the body?

Answer 4

• inhalation
• ingestion
• absorption
• through wounds

Question 5

Radiation:

An _____ exposure is one delivered over a relatively short period of time (a week or less)

Answer 5

Acute

Question 6

Radiation:

A _____ exposure is one that is delivered over a long period of time (such as years or a lifetime)

Answer 6

Chronic

Question 7

Radiation:

Firefighters are allowed how many roentgens in an hour period?

Answer 7

25 roentgens

Question 8

Radiation:

How many roentgens are allowed in an hour for life saving activities?

Answer 8

75-100

Question 9

Radiation:

What are the four radiation protection factors that alter radiation dose?

Answer 9

• time
• distance
• shielding
• quantity

Question 10

Radiation:

Do firefighter turnouts provide protection from exposure to beta or gamma particles?

Answer 10

No

Question 11

Radiation:

For injured people, is care of injuries given priority over decontamination?

Answer 11

Yes

Question 12

Radiation:

When responding to a radiation accident involving personal injury, the emergency responder’s first priority is _______

Answer 12

Administering life saving emergency care.

Question 13

Radiation:

What is the Standard size of radioactive placards placed on vehicles per TB #56 Radiation procedures?

Answer 13

10” x 10”

Updated sizes of dot placards is 10-3/4 by 10-3/4

Question 14

Radiation:

What is the Standard size of radioactive placards placed on packages per TB #56 Radiation procedures?

Answer 14

4”x4”

Question 15

Radiation:
Guidelines recommend accumulation of not more than _____ roentgens in general emergency situations or _____ roentgens to save a life

Answer 15

• 25 rem (25,000 mrem)

* 100 rem (100,000 mrem)

Question 16

Radiation:
The CD V-700 survey meter is a low-range instrument for estimating _____ ray exposure rates and detecting the presence of most ____ radiation

Answer 16

• gamma

* beta

Question 17

Radiation:
For emergency field monitoring operations with the CD-700 survey meter, the shield position should be _____ (open or closed?)

Answer 17

Open, this will detect both gamma and beta radiation

Question 18

Radiation:

Background radiation is usually less than ___ mR/hr

Answer 18

0.5

Question 19

Radiation:

By measuring the radiation exposure rate at a given distance from a source and then doubling the distance from the source, the intensity of the radiation is decreased by a factor of ____

Answer 19

4

Question 20

Radiation:
_____ radiation particles do not penetrate even the first outer layer of skin and can be stopped by a piece of thin paper or clothing. These particles are an internal hazard only.

Answer 20

Alpha radiation