2025 IRRSP Certification practice exam with 200
questions and correct answers (100% correct
answers)/ Industrial Radiography Radiation Safety
Personnel IRRSP EXAM latest 2025 (brand new!)
Industrial radiography, being one of the most dangerous jobs in the world, has
killed - ANSWER-only one radiographer is known to have died in the world
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 - ANSWER-1 half-value layer
The best material to use as shielding would be - ANSWER-lead
The shorter the wave length or higher the frequency, the greater the penetration; as
such - ANSWER-primary beams have greater penetrability than secondary beams
Elementary particles with a unit negative electrical charge and a mass
approximately equal to 1/1840 that of a proton are - ANSWER-electrons
the atomic weight of an atom is the combination of a total number of protons and
neutrons held in the nucleus. This is also known as the - ANSWER-A number
Gamma rays are affected by magnetic fields - ANSWER-false
As a radioisotope decays, the elements return to a stable state by undergoing
several steps; once complete, the material continues to produce radiation -
ANSWER-False
pg. 1
,after 148 days, Ir-192 would have undergone how many half-lives? - ANSWER-
two
activation is the process of bombarding material with - ANSWER-Excess neutrons
the total number of ________ identifies an element - ANSWER-protons
Gamma radiation has a shorter wave length than visible light, therefore making it -
ANSWER-more penetrating
In the early years of radiography, what caused personnel to be over exposed? -
ANSWER-Poor equipment design, lack of understanding, lack of and poor safety
practices
in what year did Marie Curie discover radium? - ANSWER-late of 1898
Who coined the term radioactivity - ANSWER-Marie and Pierre Curie
In the early years of radiography, from 1920-1930, the maximum that could be
inspected via X-radiation was ______ steel - ANSWER-3 in.
the predominant cause of overexposure is ________ - ANSWER-Improper
surveys, the source being left in an uncontrolled state, the source not being locked
once retracted to the shielded position
Who is responsible to adhere to regulations, licenses, and company policies -
ANSWER-The radiographer
pg. 2
, Alpha particles were discovered by .. - ANSWER-Ernest Rutherford
the first medical X-ray was conducted at - ANSWER-Massachusetts general
Regulations from one state to the rest are basically the same for radioactive
materials - ANSWER-true
The first person to seek guidance from is - ANSWER-their programs radiation
safety officer (RSO)
The origins of radiography were principled by - ANSWER-William Roentgen
overexposure can result in - ANSWER-cancer, genetic defects carried into further
generations, death
all radiation exposures are all equally serious and deadly - ANSWER-false
ionizing radiation passes through the entire body; as such, damage can occur to the
- ANSWER-skin, internal organs, muscles
prompt effects of radiation exposure to acute doses include - ANSWER-blood
changes, nausea, fatigue
ALARA - ANSWER-As Low As Reasonably Achievable
pg. 3
questions and correct answers (100% correct
answers)/ Industrial Radiography Radiation Safety
Personnel IRRSP EXAM latest 2025 (brand new!)
Industrial radiography, being one of the most dangerous jobs in the world, has
killed - ANSWER-only one radiographer is known to have died in the world
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 - ANSWER-1 half-value layer
The best material to use as shielding would be - ANSWER-lead
The shorter the wave length or higher the frequency, the greater the penetration; as
such - ANSWER-primary beams have greater penetrability than secondary beams
Elementary particles with a unit negative electrical charge and a mass
approximately equal to 1/1840 that of a proton are - ANSWER-electrons
the atomic weight of an atom is the combination of a total number of protons and
neutrons held in the nucleus. This is also known as the - ANSWER-A number
Gamma rays are affected by magnetic fields - ANSWER-false
As a radioisotope decays, the elements return to a stable state by undergoing
several steps; once complete, the material continues to produce radiation -
ANSWER-False
pg. 1
,after 148 days, Ir-192 would have undergone how many half-lives? - ANSWER-
two
activation is the process of bombarding material with - ANSWER-Excess neutrons
the total number of ________ identifies an element - ANSWER-protons
Gamma radiation has a shorter wave length than visible light, therefore making it -
ANSWER-more penetrating
In the early years of radiography, what caused personnel to be over exposed? -
ANSWER-Poor equipment design, lack of understanding, lack of and poor safety
practices
in what year did Marie Curie discover radium? - ANSWER-late of 1898
Who coined the term radioactivity - ANSWER-Marie and Pierre Curie
In the early years of radiography, from 1920-1930, the maximum that could be
inspected via X-radiation was ______ steel - ANSWER-3 in.
the predominant cause of overexposure is ________ - ANSWER-Improper
surveys, the source being left in an uncontrolled state, the source not being locked
once retracted to the shielded position
Who is responsible to adhere to regulations, licenses, and company policies -
ANSWER-The radiographer
pg. 2
, Alpha particles were discovered by .. - ANSWER-Ernest Rutherford
the first medical X-ray was conducted at - ANSWER-Massachusetts general
Regulations from one state to the rest are basically the same for radioactive
materials - ANSWER-true
The first person to seek guidance from is - ANSWER-their programs radiation
safety officer (RSO)
The origins of radiography were principled by - ANSWER-William Roentgen
overexposure can result in - ANSWER-cancer, genetic defects carried into further
generations, death
all radiation exposures are all equally serious and deadly - ANSWER-false
ionizing radiation passes through the entire body; as such, damage can occur to the
- ANSWER-skin, internal organs, muscles
prompt effects of radiation exposure to acute doses include - ANSWER-blood
changes, nausea, fatigue
ALARA - ANSWER-As Low As Reasonably Achievable
pg. 3
