ASNT INDUSTRIAL RADIOGRAPHY RADIATION SAFETY|QUESTIONS
AND VERIFIED ANSWERS|GRADED A+|PASS ON FIRST AT-
TEMPT|BRAND NEW 2026/2027 UPDATE!!!!!
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 in-
spected via
X-radiation was of steel? - ANSWER 3" (7.62 cm)
Historically, it has been proven that the predominant cause of overexposures is: - AN-
SWER Improper surveys, the source being left in an uncontrolled state, the source not
being locked once retracted to the shielded position
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 - AN-
SWER True
1
,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
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: - AN-
SWER They travel at sub-light speeds and as such are easily ontained or shielded
2
, 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
Radio waves, microwaves and infrared waves are types of: - ANSWER Nonionizing radia-
tion
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 neu-
trons 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
Activation is the process of bombarding material with: - ANSWER excess neutrons
3
AND VERIFIED ANSWERS|GRADED A+|PASS ON FIRST AT-
TEMPT|BRAND NEW 2026/2027 UPDATE!!!!!
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 in-
spected via
X-radiation was of steel? - ANSWER 3" (7.62 cm)
Historically, it has been proven that the predominant cause of overexposures is: - AN-
SWER Improper surveys, the source being left in an uncontrolled state, the source not
being locked once retracted to the shielded position
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 - AN-
SWER True
1
,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
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: - AN-
SWER They travel at sub-light speeds and as such are easily ontained or shielded
2
, 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
Radio waves, microwaves and infrared waves are types of: - ANSWER Nonionizing radia-
tion
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 neu-
trons 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
Activation is the process of bombarding material with: - ANSWER excess neutrons
3
