Question 1

Sievert is a measure of the dose of ionizing radiation to body tissue stated in terms of its estimated biological effect relative to a dose of one roentgen of X-rays.

Accepted Answer

A) True 
 B)False  False

Question 2

A dose is the amount of ionizing radiation absorbed per unit of mass by part of the body or the whole body.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following is a form or source of ionizing radiation?

Accepted Answer

A)  Video display terminals 
B)  Visible radiation 
C)  Ultraviolet radiation 
D)  Electromagnetic radiation 
E)  X-rays 
A)  Video display terminals 
B)  Visible radiation 
C)  Ultraviolet radiation 
D)  Electromagnetic radiation 
E)  X-rays E

Question 4

High-level waste from nuclear power plants is usually stored on site in water-filled pools for years and then transferred to more permanent concrete bunkers or silos.

Accepted Answer

A) True 
 B)False

Question 5

Radiation hazards in the workplace fall into three categories: alpha, beta, and gamma.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is a form or source of non-ionizing radiation?

Accepted Answer

A)  Alpha rays 
B)  Beta rays 
C)  Gamma rays 
D)  Ultraviolet radiation 
E)  X-rays 
A)  Alpha rays 
B)  Beta rays 
C)  Gamma rays 
D)  Ultraviolet radiation 
E)  X-rays

Question 7

For the exposure of non-nuclear workers to radiation during any calendar year, the exposure limit must not exceed 4mSv.

Accepted Answer

A) True 
 B)False

Question 8

Ionizing radiation is radiation with enough energy to remove electrons from the orbit of an atom, causing the atom to become charged or ionized.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following would increase exposure to electromagnetic radiation?

Accepted Answer

A)  Replacing electric hand tools with pneumatic tools 
B)  Moving motors to the bottom or back of appliances 
C)  Using cancellation devices 
D)  Moving closer to transformers 
E)  Shielding transformer cables 
A)  Replacing electric hand tools with pneumatic tools 
B)  Moving motors to the bottom or back of appliances 
C)  Using cancellation devices 
D)  Moving closer to transformers 
E)  Shielding transformer cables

Question 10

The major concern about electromagnetic radiation (EMR) is its relationship to cancer.

Accepted Answer

A) True 
 B)False

Question 11

What is the yearly ionizing radiation exposure limit for a non-nuclear worker?

Accepted Answer

A)  1 mSv 
B)  4 mSv 
C)  50 mSv 
D)  100 mSv 
E)  1000 mSv 
A)  1 mSv 
B)  4 mSv 
C)  50 mSv 
D)  100 mSv 
E)  1000 mSv

Question 12

A radiation area is best described as any accessible area in which radiation hazards exist that could deliver a dose of what intensity?

Accepted Answer

A)  Within 1 hour, a major portion of the body could receive more than 1 millirem. 
B)  Within 1 hour, a major portion of the body could receive more than 2 millirem. 
C)  Within 1 hour, a major portion of the body could receive more than 5 millirem. 
D)  Within 5 consecutive days, a major portion of the body could receive more than 5 millirem. 
E)  Within 5 consecutive days, a major portion of the body could receive more than 10 millirem. 
A)  Within 1 hour, a major portion of the body could receive more than 1 millirem. 
B)  Within 1 hour, a major portion of the body could receive more than 2 millirem. 
C)  Within 1 hour, a major portion of the body could receive more than 5 millirem. 
D)  Within 5 consecutive days, a major portion of the body could receive more than 5 millirem. 
E)  Within 5 consecutive days, a major portion of the body could receive more than 10 millirem.

Question 13

An over-exposure incident must be reported to the CNSC within 21 days after the event.

Accepted Answer

A) True 
 B)False

Question 14

What action is required in the case of radiation overexposure?

Accepted Answer

A)  Immediately notify all staff members of the exposure. 
B)  The exposed worker is to remain at the worksite until an investigation is complete by CNSC. 
C)  The exposed worker is to remain at the worksite until decontaminated. 
D)  Conduct an investigation within 21 days. 
E)  Identify and take any action required to prevent the occurrence of a similar incident. 
A)  Immediately notify all staff members of the exposure. 
B)  The exposed worker is to remain at the worksite until an investigation is complete by CNSC. 
C)  The exposed worker is to remain at the worksite until decontaminated. 
D)  Conduct an investigation within 21 days. 
E)  Identify and take any action required to prevent the occurrence of a similar incident.

Question 15

Which source of non-ionizing radiation has a frequency range of 300 MHz to 3 kHz?

Accepted Answer

A)  Infrared radiation 
B)  Microwaves 
C)  Radio frequency (RF) 
D)  Extremely low frequency (ELF) radiation 
E)  Ultra-violet radiation 
A)  Infrared radiation 
B)  Microwaves 
C)  Radio frequency (RF) 
D)  Extremely low frequency (ELF) radiation 
E)  Ultra-violet radiation

Question 16

Ionizing radiation exposure limits are the same for nuclear and non-nuclear workers.

Accepted Answer

A) True 
 B)False

Question 17

Ionizing radiation exposure limits are the same for pregnant (after she knows) and other nuclear workers who are of childbearing age.

Accepted Answer

A) True 
 B)False

Question 18

A radioactive material is a material that emits corpuscular or electromagnetic emanations as the result of spontaneous nuclear disintegration.

Accepted Answer

A) True 
 B)False

Question 19

What means of disposal is used for low-level nuclear waste?

Accepted Answer

A)  It is sent to the Chalk River Laboratories. 
B)  It is stored in water-filled pools for years. 
C)  It is stored in concrete-filled bunkers for years. 
D)  It is buried deep underground in the Canadian shield. 
E)  It is rendered non-hazardous by ionization. 
A)  It is sent to the Chalk River Laboratories. 
B)  It is stored in water-filled pools for years. 
C)  It is stored in concrete-filled bunkers for years. 
D)  It is buried deep underground in the Canadian shield. 
E)  It is rendered non-hazardous by ionization.

Question 20

Ionizing radiation exposure limits are the same for men and women (who are not pregnant).

Accepted Answer

A) True 
 B)False

Exam 22: Radiation Hazards

Sievert is a measure of the dose of ionizing radiation to body tissue stated in terms of its estimated biological effect relative to a dose of one roentgen of X-rays.

A dose is the amount of ionizing radiation absorbed per unit of mass by part of the body or the whole body.

Which of the following is a form or source of ionizing radiation?

High-level waste from nuclear power plants is usually stored on site in water-filled pools for years and then transferred to more permanent concrete bunkers or silos.

Radiation hazards in the workplace fall into three categories: alpha, beta, and gamma.

Which of the following is a form or source of non-ionizing radiation?

For the exposure of non-nuclear workers to radiation during any calendar year, the exposure limit must not exceed 4mSv.

Ionizing radiation is radiation with enough energy to remove electrons from the orbit of an atom, causing the atom to become charged or ionized.

Which of the following would increase exposure to electromagnetic radiation?

The major concern about electromagnetic radiation (EMR) is its relationship to cancer.

What is the yearly ionizing radiation exposure limit for a non-nuclear worker?

A radiation area is best described as any accessible area in which radiation hazards exist that could deliver a dose of what intensity?

An over-exposure incident must be reported to the CNSC within 21 days after the event.

What action is required in the case of radiation overexposure?

Which source of non-ionizing radiation has a frequency range of 300 MHz to 3 kHz?

Ionizing radiation exposure limits are the same for nuclear and non-nuclear workers.

Ionizing radiation exposure limits are the same for pregnant (after she knows) and other nuclear workers who are of childbearing age.

A radioactive material is a material that emits corpuscular or electromagnetic emanations as the result of spontaneous nuclear disintegration.

What means of disposal is used for low-level nuclear waste?

Ionizing radiation exposure limits are the same for men and women (who are not pregnant).

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