Deck 17: Radiation Safety and Protection

Question 1

5)Slow neutrons have a quality factor of _________.

A) 1
B) 5
C) 10
D) 20

Answer 1

B
Slow (or thermal)neutrons have a QF of 5.

Question 2

4)X-rays have a quality factor of ________.

A) 1
B) 5
C) 10
D) 20

Answer 2

A
X-rays have a weighting factor of 1.

Question 3

16)Smoking cigarettes increases an individual's radiation exposure by ____ mSv.

A) 0.2
B) 0.11
C) 13
D) 11

Answer 3

C
Smokers inhale radioactive materials that are present naturally in tobacco (primarily polonium-210)and may receive an additional annual effective dose equivalent of 13 mSv.

Question 4

15)The total gestational dose equivalent limit is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 5

19)The average annual dose received by the general public from all medical radiation procedures is ____ mSv.

A) 3
B) 2
C) 1
D) 0.5

Question 6

17)The average annual dose received by the general public from all naturally occurring radiation sources is ____ mSv.

A) 3
B) 2
C) 1
D) 0.5

Question 7

2)What is the radiation weighting factor for gamma-rays?

A) 1
B) 5
C) 10
D) 20

Question 8

8)The annual dose equivalent limit to the heart for occupationally exposed individuals is ____ mSv.

A) 50
B) 100
C) 150
D) 500

Question 9

7)The annual dose equivalent limit to the lens of the eye for occupationally exposed individuals is ____ mSv.

A) 50
B) 100
C) 150
D) 500

Question 10

12)The annual dose equivalent limit to the whole body for educationally exposed individuals is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 11

9)The annual dose equivalent limit to the whole body for frequent nonoccupationally exposed individuals is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 12

14)The monthly dose equivalent limit to an embryo/fetus is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 13

20)The average annual dose received by the general public from naturally occurring internal radiation is ____ mSv.

A) 0.2
B) 0.11
C) 13
D) 11

Question 14

1)Electrons have a quality factor (QF)of _____.

A) 1
B) 5
C) 10
D) 20

Question 15

18)The average annual dose received by the general public from radon is ____ mSv.

A) 3
B) 2
C) 1
D) 0.5

Question 16

10)The annual dose equivalent limit to the whole body for infrequent nonoccupationally exposed individuals is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 17

6)The annual dose equivalent limit to the whole body for occupationally exposed individuals is _____ mSv.

A) 50
B) 100
C) 150
D) 500

Question 18

13)The annual dose equivalent limit to the lens of the eye for educationally exposed individuals is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 19

11)The annual dose equivalent limit to the lens of the eye for nonoccupationally exposed individuals is ____ mSv.

A) 0.5
B) 1
C) 5
D) 50

Question 20

3)What is the radiation weighting factor for alpha particles?

A) 1
B) 5
C) 10
D) 20

Question 21

25)Which of the following describes why filters are used in film badges?

A) To discriminate different directions of radiation
B) To discriminate different radiation energies and types
C) To correct for film fogging due to exposure
D) To increase the sensitivity of the measuring device

Question 22

29)Which of the following is not a natural source of background radiation?

A) Cosmic rays
B) Radium and uranium
C) Carbon 14
D) Nuclear fallout

Question 23

31)One half-value layer thickness in concrete would be__________ one half-value layer thickness in lead for a Cobalt 60 beam.

A) less than
B) greater than
C) equivalent to

Question 24

23)Which of the following would not be helpful in a personnel radiation-monitoring program?

A) Film badges
B) Routine blood examinations
C) Pocket ionization chambers
D) TLDs

Question 25

26)Which agency provides information and recommendations in the public interest concerning radiation measurements and protection?

A) ACR
B) NCRP
C) ALARA
D) AER

Question 26

30)It is recommended that gestational dose be ________________________.

A) unequally shifted to the third trimester
B) unequally shifted to the first trimester
C) unequally shifted to the second trimester
D) evenly distributed throughout the gestational period

Question 27

24)Which of the following materials are used in room shielding?
I)Cerrobend
II)Concrete
III)Lead
IV)Steel

A) I and III
B) I, II, and III
C) II, III, and IV
D) I, II, III, and IV

Question 28

28)Which particles can be electrons?

A) Alpha particles
B) Beta particles
C) X-rays
D) Gamma-rays

Question 29

22)Thermoluminescent dosimeters are composed of ____.

A) Ra
B) Al2O3
C) Ce
D) LiF

Question 30

27)Which particles have the highest linear energy transfer?

A) Alpha particles
B) Beta particles
C) X-rays
D) Gamma-rays

Question 31

21)The current recommended negligible individual risk level is ____ mSv/yr.

A) 0.001
B) 0.01
C) 0.1
D) 1