ASNT Industrial Radiography Radiation
Safety Questions 2025/2026 Exam All
Answers and Illustrations Given
In the early years of radiography, what caused personnel to be
overexposed? - 🧠 ANSWER ✔✔Poor equipment design, lack of
understanding, lack of and poor safety practices.
In what year did Marie Curie discover radium? - 🧠 ANSWER ✔✔Late 1898
Who coined the term radioactivity? - 🧠 ANSWER ✔✔Marie and Pierre Curie
In the early years of radiography from 1920-1930, the maximum thickness
that could be inspected via
X-radiation was of steel? - 🧠 ANSWER ✔✔3" (7.62 cm)
Historically, it has been proven that the predominant cause of
overexposures is: - 🧠 ANSWER ✔✔Improper surveys, the source being left
in an uncontrolled state, the source not being locked once retracted to the
shielded position
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619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 1
,The responsibility to adhere to the regulations, license conditions and
company policies falls to: - 🧠 ANSWER ✔✔The radiographer
Alpha particles were discovered by: - 🧠 ANSWER ✔✔Henri Becquerel
The first medical X-ray was conducted at: - 🧠 ANSWER ✔✔Massachusetts
General
Regulations from one state to the next are essentially the me for
radioactive materials - 🧠 ANSWER ✔✔True
A radiographer has several avenues to seek guidance and counsel. The
first person he or she can turn to is? - 🧠 ANSWER ✔✔their program's
radiation safety officer (RSO)
The origins of industrial radiography can be attributed to: - 🧠 ANSWER
✔✔Wilhelm Rontgen
The two basic types of radiation are: - 🧠 ANSWER ✔✔particulate and
electromagnetic
Wavelike radiation travels at: - 🧠 ANSWER ✔✔at the speed of light without
regard to pressure, temperature or magnetic fields
Gamma rays travel in a wavelike motion at the speed of
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619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 2
,light, which is: - 🧠 ANSWER ✔✔186 000 miles/s (299 338 km/s)
Matter can be turned into energy. - 🧠 ANSWER ✔✔True
Alpha particles are much like a helium nucleus as they have: - 🧠 ANSWER
✔✔two protons, two neutrons and two electrons
Beta particles have a/an: - 🧠 ANSWER ✔✔Negative charge
Alpha particles have a/an: - 🧠 ANSWER ✔✔Positive charge
Beta particles have a mass: - 🧠 ANSWER ✔✔much less than that of an
alpha particle
In modern radiography the alpha and beta particles are of little concern
because: - 🧠 ANSWER ✔✔They travel at sub-light speeds and as such are
easily ontained or shielded
X-radiation is created by applying a: - 🧠 ANSWER ✔✔high voltage direct
current across the cathode of a vacuum tube
X-rays are produced by an X-ray tube by the: - 🧠 ANSWER ✔✔passage of
electrons across the tube striking the
target
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 3
, Radio waves, microwaves and infrared waves are types of: - 🧠 ANSWER
✔✔Nonionizing radiation
The neutron has an atomic mass of: - 🧠 ANSWER ✔✔1 AMU ·
The shorter the wavelength 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 - 🧠 ANSWER ✔✔Electrons
The atomic weight of an atom is the combination of the 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 stab' state by
undergoing several steps; once complete the material continues to produce
radiation: - 🧠 ANSWER ✔✔false
After 148 days, Ir-192 would have undergone how m half lives? - 🧠
ANSWER ✔✔2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 4
Safety Questions 2025/2026 Exam All
Answers and Illustrations Given
In the early years of radiography, what caused personnel to be
overexposed? - 🧠 ANSWER ✔✔Poor equipment design, lack of
understanding, lack of and poor safety practices.
In what year did Marie Curie discover radium? - 🧠 ANSWER ✔✔Late 1898
Who coined the term radioactivity? - 🧠 ANSWER ✔✔Marie and Pierre Curie
In the early years of radiography from 1920-1930, the maximum thickness
that could be inspected via
X-radiation was of steel? - 🧠 ANSWER ✔✔3" (7.62 cm)
Historically, it has been proven that the predominant cause of
overexposures is: - 🧠 ANSWER ✔✔Improper surveys, the source being left
in an uncontrolled state, the source not being locked once retracted to the
shielded position
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 1
,The responsibility to adhere to the regulations, license conditions and
company policies falls to: - 🧠 ANSWER ✔✔The radiographer
Alpha particles were discovered by: - 🧠 ANSWER ✔✔Henri Becquerel
The first medical X-ray was conducted at: - 🧠 ANSWER ✔✔Massachusetts
General
Regulations from one state to the next are essentially the me for
radioactive materials - 🧠 ANSWER ✔✔True
A radiographer has several avenues to seek guidance and counsel. The
first person he or she can turn to is? - 🧠 ANSWER ✔✔their program's
radiation safety officer (RSO)
The origins of industrial radiography can be attributed to: - 🧠 ANSWER
✔✔Wilhelm Rontgen
The two basic types of radiation are: - 🧠 ANSWER ✔✔particulate and
electromagnetic
Wavelike radiation travels at: - 🧠 ANSWER ✔✔at the speed of light without
regard to pressure, temperature or magnetic fields
Gamma rays travel in a wavelike motion at the speed of
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 2
,light, which is: - 🧠 ANSWER ✔✔186 000 miles/s (299 338 km/s)
Matter can be turned into energy. - 🧠 ANSWER ✔✔True
Alpha particles are much like a helium nucleus as they have: - 🧠 ANSWER
✔✔two protons, two neutrons and two electrons
Beta particles have a/an: - 🧠 ANSWER ✔✔Negative charge
Alpha particles have a/an: - 🧠 ANSWER ✔✔Positive charge
Beta particles have a mass: - 🧠 ANSWER ✔✔much less than that of an
alpha particle
In modern radiography the alpha and beta particles are of little concern
because: - 🧠 ANSWER ✔✔They travel at sub-light speeds and as such are
easily ontained or shielded
X-radiation is created by applying a: - 🧠 ANSWER ✔✔high voltage direct
current across the cathode of a vacuum tube
X-rays are produced by an X-ray tube by the: - 🧠 ANSWER ✔✔passage of
electrons across the tube striking the
target
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 3
, Radio waves, microwaves and infrared waves are types of: - 🧠 ANSWER
✔✔Nonionizing radiation
The neutron has an atomic mass of: - 🧠 ANSWER ✔✔1 AMU ·
The shorter the wavelength 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 - 🧠 ANSWER ✔✔Electrons
The atomic weight of an atom is the combination of the 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 stab' state by
undergoing several steps; once complete the material continues to produce
radiation: - 🧠 ANSWER ✔✔false
After 148 days, Ir-192 would have undergone how m half lives? - 🧠
ANSWER ✔✔2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED 4
