Final - Radiation Protection

Question 1

Cosmic, Terrestrial, Internal

Answer 1

Natural sources of radiation exposure

Question 2

Medical, Consumer Products, Industrial, Occupational

Answer 2

Man-made sources of radiation exposure

Question 3

Branch of physics or biophysics concerned with radiation physics and radiation biology, whichdeals with the safe use of ionizing and nonionizing radiation in academic, government, industrial, medical, nuclear power, research, and other civilian and military applications of radiation.

Answer 3

Health physics

Question 4

ALARA stands for:

Answer 4

As low as reasonably achievable

Question 5

ALARA is based on ____, ____dose response relationship.

- means?

Answer 5

Linear, Non-Threshold

- Assumes any dose of radiation, no matter how small, has a deleterious effect.

Question 6

2 modes of exposure:

Answer 6

Internal and external

Question 7

3 internal modes of exposure:

Answer 7

Inhalation, ingestion, open wound

Question 8

Time has a ____ effect on dose absorbed.

Answer 8

linear

Question 9

Dose rate decreases by the inverse square of the ____ from the source.
- Which equation shows this relationship?

Answer 9

distance
- 𝐷2/𝐷1= (𝑑1)^2/(𝑑2)^2
D = dose
d = distance

Question 10

4 ways to reduce internal exposure:

Answer 10

1. Good Hygiene
2. Contamination Control
3. Reduce Airborne Hazards
4. Use Personal Protective Equipment

Question 11

4 ways to reduce internal exposure - standard precautions:

Answer 11

1. Handwashing
2. gloves
3. mask/eye protection/face shields
4. gowns

Question 12

2 ways to reduce internal exposure - good hygiene:

Answer 12

1. No food or drink near radioactive materials.

2. Don’t touch self or surfaces

Question 13

3 ways to reduce internal exposure - contamination control:

Answer 13

1. Absorbent surface covers
2. Frequent waste disposal
3. Prompt decontamination

Question 14

3 ways to reduce internal exposure - airborne hazards:

Answer 14

1. Fume hoods
2. Avoid dust, aerosol
3. Avoid inhalation

Question 15

The presence of radiation is called ____.

Answer 15

Detection

Question 16

The total amount of radiation detected is called ____.

Answer 16

Intensity

Question 17

The amount of radiation detected per unit of time is called ____.

Answer 17

Rate

Question 18

Dose limit to embryo/fetus during pregnancy is ___.

Answer 18

0.5 mSv

Question 19

Life-saving dose limit is ____.

Answer 19

0.5 Sv

Question 20

Occupational dose limit is ___ per year.

Answer 20

50 mSv

Question 21

Lifetime occupational dose limit is ____.

- does this apply to FL?

Answer 21

age x 10 mSv

- no

Question 22

Dose to the lens of the eye has ____ effects.

- ___ is the dose limit per year.

Answer 22

Deterministic

- 150 mSv

Question 23

Dose to the skin of the extremities has ____ effects.

- ___ is the dose limit per year.

Answer 23

Deterministic

- 500 mSv

Question 24

The largest man-made source of radiation that people will get is from ____.

Answer 24

Medical radiation

Question 25

PPE (Personal Protective Equipment) examples: (4)

Answer 25

1. Gloves
2. mask
3. eye protection/glasses
4. gowns