If the half-value layer for some radionuclide in lead is 0.30 mm, what thickness of lead shielding is
necessary to reduce the radiation exposure from 8 mR/hr to 1 mR/hr?
CORRECT ANSWER
0.9 mm
Which instrument is best used for a removable contamination survey?
CORRECT ANSWER
Well Counter
All of the following are required by the NRC when handling radioactive materials EXCEPT?
CORRECT ANSWER
Laminar Flow Hood
Which of the following individuals is NOT listed on the radioactive materials license?
CORRECT ANSWER
Supervised User
Which of the following is NOT required by the NRC to be posted?
CORRECT ANSWER
NRC form 5
, The October radiation dosimetry report of a 21-year-old technologist is shown below. Which of the
following readings exceeds the NRC ALARA philosophy?
Monthly : 30 mrem
Quarterly : 175 mrem
Year To Date : 400 mrem
Permanent : 1,100 mrem
CORRECT ANSWER
Quarterly : 175 mrem
According to nationally recognized standards, how often should a linearity test be performed on a dose
calibrator?
CORRECT ANSWER
Quarterly
Due to a manufacturer mislabeling, a patient received 5 mCi of Tc-99m pertechnetate via IV instead of
the prescribed 2 mCi. The resulting image is technically satisfactory. According to the NRC regulations,
this is a(n)?
CORRECT ANSWER
Error
If you are standing next to a patient who is emitting 210 mR/hr, how long can you receive this amount of
exposure before you receive 4 mREM?
CORRECT ANSWER
1.1 minutes
necessary to reduce the radiation exposure from 8 mR/hr to 1 mR/hr?
CORRECT ANSWER
0.9 mm
Which instrument is best used for a removable contamination survey?
CORRECT ANSWER
Well Counter
All of the following are required by the NRC when handling radioactive materials EXCEPT?
CORRECT ANSWER
Laminar Flow Hood
Which of the following individuals is NOT listed on the radioactive materials license?
CORRECT ANSWER
Supervised User
Which of the following is NOT required by the NRC to be posted?
CORRECT ANSWER
NRC form 5
, The October radiation dosimetry report of a 21-year-old technologist is shown below. Which of the
following readings exceeds the NRC ALARA philosophy?
Monthly : 30 mrem
Quarterly : 175 mrem
Year To Date : 400 mrem
Permanent : 1,100 mrem
CORRECT ANSWER
Quarterly : 175 mrem
According to nationally recognized standards, how often should a linearity test be performed on a dose
calibrator?
CORRECT ANSWER
Quarterly
Due to a manufacturer mislabeling, a patient received 5 mCi of Tc-99m pertechnetate via IV instead of
the prescribed 2 mCi. The resulting image is technically satisfactory. According to the NRC regulations,
this is a(n)?
CORRECT ANSWER
Error
If you are standing next to a patient who is emitting 210 mR/hr, how long can you receive this amount of
exposure before you receive 4 mREM?
CORRECT ANSWER
1.1 minutes
