IRRSP Industrial Radiography Radiation Safety Personnel (IRRSP) Practice Test Latest Update Actual Exam 50 Questions with 100% Verified Correct Answers Guaranteed A+ Verified by Professor

IRRSP Industrial Radiography Radiation Safety
Personnel (IRRSP) Practice Test Latest Update
2025-2026 Actual Exam 50 Questions with 100%
Verified Correct Answers Guaranteed A+ Verified
by Professor
0.957 R/hr - CORRECT ANSWER: 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



100 keV - CORRECT ANSWER: When operating an x-ray machine at 300 kVp, what is
the average energy of x-rays produced?

a. 900 keV

b. 300 keV

c. 100 keV

d. 1.3 meV


100 mR/hr - CORRECT ANSWER: 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

, 127 feet - CORRECT ANSWER: Using a 50 Curie Iridium-192 source and a 3 HVL
collimator, what is the distance a radiographer must place the Restricted area
boundary?

a. 19 feet

b. 127 feet

c. 222 feet

d. 81 feet



1480 GBq - CORRECT ANSWER: A 40 Curie Iridium-192 source is approximately equal
to:

(1 Ci = 37 Gbq)

a. 1480 GBq
b. 10 GBq

c. 2 GBq

d. 10,480 GBq



16 - CORRECT ANSWER: The use of 4 half value layers of shielding will reduce an
intensity by a factor of:

a. 4

b. 8

c. 16
d. 32



189.1 feet - CORRECT ANSWER: An Iridium-192 source that was originally 110 Curies
has decayed for 222 days. At what distance from the source should a radiographer
place the "Restricted Area" boundary?
a. 189.1 feet

b. 411.1 feet
c. 119.6 feet