Industrial Radiography Radiation Safety
Personnel (IRRSP) IRRSP test questions Latest
Update 2025-2026 Actual Exam 100 Questions
with 100% Verified Correct Answers Guaranteed
A+ Verified by Professor
0 at 25 feet - CORRECT ANSWER: After a source has been returned to the shielded
position a survey meter should show
0.005 Ci - CORRECT ANSWER: A leak test would be considered failed should the
sample testes return a value greater than
0.2 in. (5.08 mm) - CORRECT ANSWER: When using lead to shield an Ir-192 source,
you would need __________ to reduce the original exposure to one half
1 AMU - CORRECT ANSWER: The neutron has an atomic mass of?
1 half-value layer - CORRECT ANSWER: Shielding can be expressed by the amount of
shielding provided, so that the amount of shielding that would reduce the original
exposure rate to one-half would be stated as
1/8 in. to 3/4 in. - CORRECT ANSWER: the expected penetrating power in steel of 50
kV to 150 kV
10% that of an adult, 0.5 rem, 5 mSv - CORRECT ANSWER: The maximum
occupational dose for a minor
12 months - CORRECT ANSWER: dosimeters and rate alarms must be calibrated every
, 12 months - CORRECT ANSWER: Exposure devices using depleted uranium must be
leak tested every
14 R/Ci at one foot - CORRECT ANSWER: The specific gamma ray constant for Co-60
can be expressed as _____________
156 R/h - CORRECT ANSWER: With 30 Ci at one foot, what would your exposure rate
be at one foot from the source
186000 miles/s (299338 km/s) - CORRECT ANSWER: Gamma rays travel in a wavelike
motion at the speed of light, which is?
2 mR/h through 1 R/h - CORRECT ANSWER: the survey meter must be able to
measure a range of
20 - CORRECT ANSWER: the alpha particle has a quality factor of....
20% - CORRECT ANSWER: a survey meter most be calibrated on each scale to an
accuracy of
24 hours - CORRECT ANSWER: an off scale pocket dosimeter and TLDs must be
submitted within
255.5 R - CORRECT ANSWER: If you have 73 Ci of Co-60, your exposure rate at two
feet from the source would be __________
3 in. - CORRECT ANSWER: In the early years of radiography, from 1920-1930, the
maximum that could be inspected via X-radiation was ______ steel
Personnel (IRRSP) IRRSP test questions Latest
Update 2025-2026 Actual Exam 100 Questions
with 100% Verified Correct Answers Guaranteed
A+ Verified by Professor
0 at 25 feet - CORRECT ANSWER: After a source has been returned to the shielded
position a survey meter should show
0.005 Ci - CORRECT ANSWER: A leak test would be considered failed should the
sample testes return a value greater than
0.2 in. (5.08 mm) - CORRECT ANSWER: When using lead to shield an Ir-192 source,
you would need __________ to reduce the original exposure to one half
1 AMU - CORRECT ANSWER: The neutron has an atomic mass of?
1 half-value layer - CORRECT ANSWER: Shielding can be expressed by the amount of
shielding provided, so that the amount of shielding that would reduce the original
exposure rate to one-half would be stated as
1/8 in. to 3/4 in. - CORRECT ANSWER: the expected penetrating power in steel of 50
kV to 150 kV
10% that of an adult, 0.5 rem, 5 mSv - CORRECT ANSWER: The maximum
occupational dose for a minor
12 months - CORRECT ANSWER: dosimeters and rate alarms must be calibrated every
, 12 months - CORRECT ANSWER: Exposure devices using depleted uranium must be
leak tested every
14 R/Ci at one foot - CORRECT ANSWER: The specific gamma ray constant for Co-60
can be expressed as _____________
156 R/h - CORRECT ANSWER: With 30 Ci at one foot, what would your exposure rate
be at one foot from the source
186000 miles/s (299338 km/s) - CORRECT ANSWER: Gamma rays travel in a wavelike
motion at the speed of light, which is?
2 mR/h through 1 R/h - CORRECT ANSWER: the survey meter must be able to
measure a range of
20 - CORRECT ANSWER: the alpha particle has a quality factor of....
20% - CORRECT ANSWER: a survey meter most be calibrated on each scale to an
accuracy of
24 hours - CORRECT ANSWER: an off scale pocket dosimeter and TLDs must be
submitted within
255.5 R - CORRECT ANSWER: If you have 73 Ci of Co-60, your exposure rate at two
feet from the source would be __________
3 in. - CORRECT ANSWER: In the early years of radiography, from 1920-1930, the
maximum that could be inspected via X-radiation was ______ steel
