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ASNT INDUSTRIAL RADIOGRAPHY RADIATION SAFETY EXAM QUESTIONS WITH CORRECT ANSWERS
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ASNT INDUSTRIAL RADIOGRAPHY RADIATION SAFETY EXAM QUESTIONS WITH CORRECT ANSWERS
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ASNT INDUSTRIAL RADIOGRAPHYRADIATION SAFETY EXAM QUESTIONS
WITH CORRECT ANSWERS
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
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
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
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
Activation is the process of bombarding material with: - Answer-excess neutrons
The total number of _________ identifies an element. - Answer-protons
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