Radiation Safety Exam Questions And Answers
Verified 100% Correct
Gaseous radiopharmaceuticals may only be used in rooms that:
(a) Have at least one window
(b) Contain an oxygen supply
(c) Are at a positive pressure compared to surrounding rooms (d) Are at a negative
pressure compared to surrounding
rooms - ANSWER (d) Are at a negative pressure compared to surrounding rooms
If the exposure rate at 4 m from a radioactive source is 5 mR/h, what will the exposure
rate be at 3 m?
(a) 2.8 mR/h
(b) 6.5 mR/h
(c) 7.4 mR/h
(d) 8.9 mR/h - ANSWER (d) 8.9 mR/h
A spill of 99mTc increases the exposure rate in a room from 1.7 to 3.15 mR/h. The room
is posted with a sign reading "Caution-Radioactive Materials". What would be the ideal
solution?
(a) Change the sign to one reading "Caution-Radiation Area"
(b) Call the NRC
(c) Decontaminate the floor with water and cleanser (d) Place absorbent paper over the
spill and close the room
until the activity has decayed. - ANSWER (d) Place absorbent paper over the spill and
close the room until the activity has decayed.
A technologist has 500 mrem registered on his ring badge in 1 month. What should be
done to decrease exposure in the future?
(a) Use lead pigs and syringe shields when preparing radiopharmaceuticals
(b) Have another technologist elute the generator
(c) Wear lead aprons
(d) All of the above - ANSWER (a) Use lead pigs and syringe shields when preparing
radiopharmaceuticals
OSHA requires that personnel exposure records be provided to employees: (a)
Monthly
(b) Quarterly
(c) Annually
(d) Biannually - ANSWER (c) Annually
, A room containing a 57Co sheet source is posted with a sign reading
"CautionRadioactive Materials". The exposure rate measured next to the source is 5.2
mR/h.
What should be done?
(a) Change the sign to one reading " Caution-Radiation Area"
(b) Store the source in a leaded container
(c) Monitor the length of time a technologist can work near the source
(d) None of the above - ANSWER (b) Store the source in a leaded container
A technologist discovers that a patient in the room next to a radioiodine therapy will
receive 2.5 mrem/h when lying in his bed which is against the shared wall. What should
be done?
(a) Move the bed to the other side of the room
(b) Discharge the therapy patient
(c) Discharge the non-therapy patient
(d) Calculate how long visitors to the non-therapy patient can stay
(e) Calculate how long the patient may stay in bed each hour - ANSWER (a) Move the
bed to the other side of the room
What is the dose rate limit at the surface of a package bear- ing a DOT Class I White
label? (a) 0.5 mR/h
(b) 2 mR/h
(c) 50 mR/h
(d) 100 mR/h
(e) 200 mR/h - ANSWER (a) 0.5 mR/h
A Type A package bears a DOT Class II Yellow Radioactive label, has a transport index
of 0.8, and contains 10 mCi of 111In oxine. What is the exposure rate at 3 ft from the
package? (a) 0.4 mR/h
(b) 0.8 mR/h
(c) 1.0 mR/h
(d) 7 mR/h
(e) Cannot be determined from the information given - ANSWER (b) 0.8 mR/h
The doorway to the Nuclear Medicine reception area should be posted with:
(a) Caution: Radiation Area
(b) Caution: High Radiation Area
(c) Grave Danger: Very High Radiation Area
(d) Caution: Radioactive Materials
(e) None of the above - ANSWER (e) None of the above
Which of the following steps would not decrease a technol- ogist's chances of internal
exposure to radiation?
Verified 100% Correct
Gaseous radiopharmaceuticals may only be used in rooms that:
(a) Have at least one window
(b) Contain an oxygen supply
(c) Are at a positive pressure compared to surrounding rooms (d) Are at a negative
pressure compared to surrounding
rooms - ANSWER (d) Are at a negative pressure compared to surrounding rooms
If the exposure rate at 4 m from a radioactive source is 5 mR/h, what will the exposure
rate be at 3 m?
(a) 2.8 mR/h
(b) 6.5 mR/h
(c) 7.4 mR/h
(d) 8.9 mR/h - ANSWER (d) 8.9 mR/h
A spill of 99mTc increases the exposure rate in a room from 1.7 to 3.15 mR/h. The room
is posted with a sign reading "Caution-Radioactive Materials". What would be the ideal
solution?
(a) Change the sign to one reading "Caution-Radiation Area"
(b) Call the NRC
(c) Decontaminate the floor with water and cleanser (d) Place absorbent paper over the
spill and close the room
until the activity has decayed. - ANSWER (d) Place absorbent paper over the spill and
close the room until the activity has decayed.
A technologist has 500 mrem registered on his ring badge in 1 month. What should be
done to decrease exposure in the future?
(a) Use lead pigs and syringe shields when preparing radiopharmaceuticals
(b) Have another technologist elute the generator
(c) Wear lead aprons
(d) All of the above - ANSWER (a) Use lead pigs and syringe shields when preparing
radiopharmaceuticals
OSHA requires that personnel exposure records be provided to employees: (a)
Monthly
(b) Quarterly
(c) Annually
(d) Biannually - ANSWER (c) Annually
, A room containing a 57Co sheet source is posted with a sign reading
"CautionRadioactive Materials". The exposure rate measured next to the source is 5.2
mR/h.
What should be done?
(a) Change the sign to one reading " Caution-Radiation Area"
(b) Store the source in a leaded container
(c) Monitor the length of time a technologist can work near the source
(d) None of the above - ANSWER (b) Store the source in a leaded container
A technologist discovers that a patient in the room next to a radioiodine therapy will
receive 2.5 mrem/h when lying in his bed which is against the shared wall. What should
be done?
(a) Move the bed to the other side of the room
(b) Discharge the therapy patient
(c) Discharge the non-therapy patient
(d) Calculate how long visitors to the non-therapy patient can stay
(e) Calculate how long the patient may stay in bed each hour - ANSWER (a) Move the
bed to the other side of the room
What is the dose rate limit at the surface of a package bear- ing a DOT Class I White
label? (a) 0.5 mR/h
(b) 2 mR/h
(c) 50 mR/h
(d) 100 mR/h
(e) 200 mR/h - ANSWER (a) 0.5 mR/h
A Type A package bears a DOT Class II Yellow Radioactive label, has a transport index
of 0.8, and contains 10 mCi of 111In oxine. What is the exposure rate at 3 ft from the
package? (a) 0.4 mR/h
(b) 0.8 mR/h
(c) 1.0 mR/h
(d) 7 mR/h
(e) Cannot be determined from the information given - ANSWER (b) 0.8 mR/h
The doorway to the Nuclear Medicine reception area should be posted with:
(a) Caution: Radiation Area
(b) Caution: High Radiation Area
(c) Grave Danger: Very High Radiation Area
(d) Caution: Radioactive Materials
(e) None of the above - ANSWER (e) None of the above
Which of the following steps would not decrease a technol- ogist's chances of internal
exposure to radiation?
