IRRSP FINAL EXAM ACTUAL QUESTIONS AND ANSWERS
GRADED A+
✔✔2 mR/hr, 100 mR/yr - ✔✔The "Restricted Area" boundary is established where the
exposure could exceed:
a. 5 mR/hr, 500 mR/yr
b. 2 mR/hr, 100 mR/yr
c. 2 mR/hr, 100 mR in 7 consecutive days, 500 mR/hr
d. 100 mR/yr
✔✔100 mR/hr - ✔✔The "High Radiation Area" boundary is established where the
exposure could exceed:
a. 500 mR/hr
b. 100 mR/hr
c. 5 mR/hr
d. 2 mR/hr
✔✔C - ✔✔After terminating a radiographic exposure, radiographers are required to
perform a survey of:
(Answer with A, B, C, or D)
a. The specimen that was being radiographed
b. The "Restricted Area" boundary
c. The exposure device, entire length of source guide tube and collimator if used
d. The exposure device
✔✔300 mR/hr - ✔✔A survey meter dial reads 1-10 with units of mR/hr and has three
scales; x1, x10 and x100. What is the measured radiation intensity when the needle is
on the 3 and the scale is x100?
a. 3 mR/hr
b. 30 mR/hr
c. 100 mR/hr
d. 300 mR/hr
✔✔C - ✔✔Leak test are performed periodically to determine if removable contamination
limits are in excess of 0.005 microCuries (uCi). The required leak test for industrial
radiography are:
(Answer with A, B, C, or D)
a. Perform a leak test of the sealed source every 12 months
b. Perform a leak test of the sealed source every 3 months
c. Perform a leak test of the sealed source every 6 months and exposure devices that
have Depleted Uranium (DU) shielding every 12 months
d. Perform a leak test of the sealed source, exposure device and associated equipment
every 6 months
✔✔D - ✔✔Assistant radiographers are qualified to:
, (Answer with A, B, C, or D)
a. Perform radiographic operations independently
b. Be responsible, at the site where sealed sources are being used, to ensure all license
conditions and regulations are complied to
c. Manipulate the sealed source without direct supervision
d. Perform all radiographic operations while under the direct supervision of a certified
radiographer
✔✔D - ✔✔Whenever an exposure device is not under the direct surveillance of a
radiographer or his assistant, it must:
(Answer with A, B, C, or D)
a. Be locked and hidden from view
b. Be locked and chained to a fence
c. Be locked and placed next to the transport vehicle
d. Be locked with the key removed, then locked within a designated storage area
✔✔C - ✔✔Source guide tubes are primarily used to:
(Answer with A, B, C, or D)
a. Provide some shielding of the sealed source during transit to and from the exposure
device
b. Provide a visual indication where the sealed source will travel
c. Provide a protected means to project the sealed source to and from the exposure
device to a fixed focal point
d. Provide a handle to drag the exposure device from one location to another
✔✔50 mR/hr - ✔✔An exposure device containing 95 Curies of Iridium-192 has a
surface radiation level of 100 mR/hr. After 74 days, what would be the expected
radiation level on the surface of the exposure device?
a. 47.5 Curies
b. 50 mR/hr
c. 100 mR/hr
d. 47.5 mR/hr
✔✔0.957 R/hr - ✔✔The radiation intensity at 1 foot from an Iridium-192 source is 598
R/hr. What is the radiation intensity at 25 feet from this source?
a. 0.957 R/hr
b. 0.010 R/hr
c. 23.90 R/hr
d. 5.980 R/hr
✔✔500 mR/hr - ✔✔Alarm rate meters are required to sound an audible warning at what
radiation intensity?
a. 500 Rem
b. 2 mR/hr
c. 500 mR/hr
d. 200 mR/hr
GRADED A+
✔✔2 mR/hr, 100 mR/yr - ✔✔The "Restricted Area" boundary is established where the
exposure could exceed:
a. 5 mR/hr, 500 mR/yr
b. 2 mR/hr, 100 mR/yr
c. 2 mR/hr, 100 mR in 7 consecutive days, 500 mR/hr
d. 100 mR/yr
✔✔100 mR/hr - ✔✔The "High Radiation Area" boundary is established where the
exposure could exceed:
a. 500 mR/hr
b. 100 mR/hr
c. 5 mR/hr
d. 2 mR/hr
✔✔C - ✔✔After terminating a radiographic exposure, radiographers are required to
perform a survey of:
(Answer with A, B, C, or D)
a. The specimen that was being radiographed
b. The "Restricted Area" boundary
c. The exposure device, entire length of source guide tube and collimator if used
d. The exposure device
✔✔300 mR/hr - ✔✔A survey meter dial reads 1-10 with units of mR/hr and has three
scales; x1, x10 and x100. What is the measured radiation intensity when the needle is
on the 3 and the scale is x100?
a. 3 mR/hr
b. 30 mR/hr
c. 100 mR/hr
d. 300 mR/hr
✔✔C - ✔✔Leak test are performed periodically to determine if removable contamination
limits are in excess of 0.005 microCuries (uCi). The required leak test for industrial
radiography are:
(Answer with A, B, C, or D)
a. Perform a leak test of the sealed source every 12 months
b. Perform a leak test of the sealed source every 3 months
c. Perform a leak test of the sealed source every 6 months and exposure devices that
have Depleted Uranium (DU) shielding every 12 months
d. Perform a leak test of the sealed source, exposure device and associated equipment
every 6 months
✔✔D - ✔✔Assistant radiographers are qualified to:
, (Answer with A, B, C, or D)
a. Perform radiographic operations independently
b. Be responsible, at the site where sealed sources are being used, to ensure all license
conditions and regulations are complied to
c. Manipulate the sealed source without direct supervision
d. Perform all radiographic operations while under the direct supervision of a certified
radiographer
✔✔D - ✔✔Whenever an exposure device is not under the direct surveillance of a
radiographer or his assistant, it must:
(Answer with A, B, C, or D)
a. Be locked and hidden from view
b. Be locked and chained to a fence
c. Be locked and placed next to the transport vehicle
d. Be locked with the key removed, then locked within a designated storage area
✔✔C - ✔✔Source guide tubes are primarily used to:
(Answer with A, B, C, or D)
a. Provide some shielding of the sealed source during transit to and from the exposure
device
b. Provide a visual indication where the sealed source will travel
c. Provide a protected means to project the sealed source to and from the exposure
device to a fixed focal point
d. Provide a handle to drag the exposure device from one location to another
✔✔50 mR/hr - ✔✔An exposure device containing 95 Curies of Iridium-192 has a
surface radiation level of 100 mR/hr. After 74 days, what would be the expected
radiation level on the surface of the exposure device?
a. 47.5 Curies
b. 50 mR/hr
c. 100 mR/hr
d. 47.5 mR/hr
✔✔0.957 R/hr - ✔✔The radiation intensity at 1 foot from an Iridium-192 source is 598
R/hr. What is the radiation intensity at 25 feet from this source?
a. 0.957 R/hr
b. 0.010 R/hr
c. 23.90 R/hr
d. 5.980 R/hr
✔✔500 mR/hr - ✔✔Alarm rate meters are required to sound an audible warning at what
radiation intensity?
a. 500 Rem
b. 2 mR/hr
c. 500 mR/hr
d. 200 mR/hr
