NMTCB Practice Exam #6 UPDATED ACTUAL Questions and CORRECT Answers
c. 60 cm
If someone is receiving 20 mRem/hr exposure at a dis-
tance of 3 m from a source, at what distance would they (I1)(D1)^2 = (I2)(D2)^2
recieve 500 mRem/hr exposure? (20)(3 m)^2 = (500)(D2)^2
(20)(9) = (500)(D2)^2
a. 0.36 cm 180 = (500)(D2)^2
b. 0.36 m 180/500 = 500 X D2^2/500
c. 60 cm 0.36 = D2^2
d. 0.60 cm 0.6 m = D2
e. 3.6 cm
0.6 m x 100 cm/1m = 60 cm
If an area survey reveals an ambient radiation level of 7
mRem/hr, which of the following radioactive signs would
be the best choice to display on the door leading to this
area?
b. "Caution: Radiation Area"
a. "Caution: Radioactive Materials"
b. "Caution: Radiation Area"
c. "Caution: High Radiation Area"
d. "Grave Danger: Very High Radiation Area"
e. "Caution: Very High Radiation Area"
An ionization chamber is left in integral mode for 10 min
and records a total dose of 3 mRem. Which of the fol-
lowing area posting signs should be used on the door
leading into this area?
a. "Caution: Radiation Area"
a. "Caution: Radiation Area"
b. "Caution: Radioactive Materials"
c. "Caution: High Radiation Area"
d. "Grave Danger: Very High Radiation Area"
e. "Caution: Very High Radiation Area"
,Which of the following area posting signs would not nor-
mally be found in a hospital?
a. "Grave Danger: Very High Radiation Area"
a. "Grave Danger: Very High Radiation Area"
b. "Caution: Radiation Area"
c. "Caution: High Radiation Area"
d. "Caution: Radioactive Materials"
e. "Caution: Very High Radiation Area"
Which of the following type of survey instruments would
be best to use to survey a spill for removable contami-
nation in a hot lab area where radioisotopes are being
stored?
c. well counter with a wipe test
a. G-M detector
b. personal pocket dosimeter
c. well counter with a wipe test
d. dose calibrator with a wipe test
e. cutie pie
Four HVLs reduce the amount of incident radiation expo-
sure to what? a. 6.5%
a. 6.5% 1 HVL = 50%
b. 12.25% 2 HVL = 25%
c. 3.125% 3 HVL = 12.5%
d. 25% 4 HVL = 6.25%
e. 50%
Which of the following is not required to be included
in the records of a radioactive package receipt check-in
process? b. name of patient
a. name of radioisotope
, b. name of patient
c. amount of activity
d. external wipe check
e. internal wipe check
If a package is reading 2 mRem/hr at a distance of 2 m,
what is the appropriate DOT label for this package?
a. No labeling is required
d. DOT II
b. DOT I
c. DOT III
d. DOT II
e. DOT IV
The purpose of the transport index is to:
a. indicate the highest activity of the contents at 1 m from
the surface
a. indicate the highest activity of the contents at 1 m from
b. list the final destination of the package
the surface
c. not to give emergency personnel information about the
contents of the package in an accident
d. not to list the radioisotopes in the package
e. document wipe check information
If a patient who is having a bone scan urinates on the floor
next to a camera, what would be the best course of action
to reduce radiation exposure?
a. Remove the spill with some absorbent material and a. Remove the spill with some absorbent material and
cover any residual activity with a lead plate or lead apron. cover any residual activity with a lead plate or lead apron.
b. Move the camera away from.
c. Let the radioactive urine decay to background.
d. Notify the referring physician of a medical event.
e. Notify the NRC of a medical event.
c. 60 cm
If someone is receiving 20 mRem/hr exposure at a dis-
tance of 3 m from a source, at what distance would they (I1)(D1)^2 = (I2)(D2)^2
recieve 500 mRem/hr exposure? (20)(3 m)^2 = (500)(D2)^2
(20)(9) = (500)(D2)^2
a. 0.36 cm 180 = (500)(D2)^2
b. 0.36 m 180/500 = 500 X D2^2/500
c. 60 cm 0.36 = D2^2
d. 0.60 cm 0.6 m = D2
e. 3.6 cm
0.6 m x 100 cm/1m = 60 cm
If an area survey reveals an ambient radiation level of 7
mRem/hr, which of the following radioactive signs would
be the best choice to display on the door leading to this
area?
b. "Caution: Radiation Area"
a. "Caution: Radioactive Materials"
b. "Caution: Radiation Area"
c. "Caution: High Radiation Area"
d. "Grave Danger: Very High Radiation Area"
e. "Caution: Very High Radiation Area"
An ionization chamber is left in integral mode for 10 min
and records a total dose of 3 mRem. Which of the fol-
lowing area posting signs should be used on the door
leading into this area?
a. "Caution: Radiation Area"
a. "Caution: Radiation Area"
b. "Caution: Radioactive Materials"
c. "Caution: High Radiation Area"
d. "Grave Danger: Very High Radiation Area"
e. "Caution: Very High Radiation Area"
,Which of the following area posting signs would not nor-
mally be found in a hospital?
a. "Grave Danger: Very High Radiation Area"
a. "Grave Danger: Very High Radiation Area"
b. "Caution: Radiation Area"
c. "Caution: High Radiation Area"
d. "Caution: Radioactive Materials"
e. "Caution: Very High Radiation Area"
Which of the following type of survey instruments would
be best to use to survey a spill for removable contami-
nation in a hot lab area where radioisotopes are being
stored?
c. well counter with a wipe test
a. G-M detector
b. personal pocket dosimeter
c. well counter with a wipe test
d. dose calibrator with a wipe test
e. cutie pie
Four HVLs reduce the amount of incident radiation expo-
sure to what? a. 6.5%
a. 6.5% 1 HVL = 50%
b. 12.25% 2 HVL = 25%
c. 3.125% 3 HVL = 12.5%
d. 25% 4 HVL = 6.25%
e. 50%
Which of the following is not required to be included
in the records of a radioactive package receipt check-in
process? b. name of patient
a. name of radioisotope
, b. name of patient
c. amount of activity
d. external wipe check
e. internal wipe check
If a package is reading 2 mRem/hr at a distance of 2 m,
what is the appropriate DOT label for this package?
a. No labeling is required
d. DOT II
b. DOT I
c. DOT III
d. DOT II
e. DOT IV
The purpose of the transport index is to:
a. indicate the highest activity of the contents at 1 m from
the surface
a. indicate the highest activity of the contents at 1 m from
b. list the final destination of the package
the surface
c. not to give emergency personnel information about the
contents of the package in an accident
d. not to list the radioisotopes in the package
e. document wipe check information
If a patient who is having a bone scan urinates on the floor
next to a camera, what would be the best course of action
to reduce radiation exposure?
a. Remove the spill with some absorbent material and a. Remove the spill with some absorbent material and
cover any residual activity with a lead plate or lead apron. cover any residual activity with a lead plate or lead apron.
b. Move the camera away from.
c. Let the radioactive urine decay to background.
d. Notify the referring physician of a medical event.
e. Notify the NRC of a medical event.
