ASNT STUDY GUIDE: INDUSTRIAL RADIOGRAPHY
RADIATION SAFETY || WITH 100% ACCURATE
SOLUTIONS.
THE SYMBOL (R) MEANS correct answers ROENTGEN
The acronym RAD means correct answers radiation absorbed dose
The roentgen (R) exposure is measured in correct answers AIR
The symbol mR means correct answers milliroentgen
One roentgen or 1 R is equal to correct answers 1 milliroentgen
The acronym rem stands for correct answers roentgen equivalent man
The initialism QF stands for correct answers quality factor
The quality factor for X-ray and gamma rays is correct answers 1
The quality factor for alpha (ray) particles is correct answers 1
Activity of radioactive material is measured in correct answers curies
Becquerels and curies are units of measurement of: correct answers decay rate
Atoms that have excess energy and are unstable are known as correct answers radioactive
Elementary particle units with a negative electrical charge and a mass approximately equal to
1/1840 that of a proton are correct answers electrons
Positively charged elementary particles swith a mass approximately equal to 1840 times that of
an electron, or 1 AMU, are known as correct answers protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called correct
answers neutrons
The area known as the center of an atom is called the correct answers nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or escape of the
byproduct material is a: correct answers sealed source
A tube through which the radioactive source travels when inside a radiographic exposure device
is a/an correct answers S tube
, Survey meters must be calibrated at intervals not to exceed: correct answers six months and/or
after instrument servicing except for battery changes
A survey meter must becapable of measuring a range of correct answers 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of correct answers activity
An analog survey meter must be calibrated on each scale at two points approximately correct
answers 33% and 66% of the scale's potential
The process that results in the removal of orbital electrons from atoms resulting in the formation
of ion pairs is called correct answers ionization
The fact that gasses bombarded by ionizing radiation become conductors of electrical current
make them useful in correct answers detection equipment
A dosimeter must be capable of reading a range of correct answers 0-200 mR (0-2 mSv)
Pocket ion chambers must be capable of reading correct answers 200 mR (2 mSv)
An exposure rate is measured by: correct answers survey meter
What dosimeters (dosimetric devices) are least affected by moisture? correct answers TLDs
Full deflection of a survey meter while on battery check means: correct answers meter may or
may not be working properly
Dosimeters must be calibrated at intervals not to exceed: correct answers annually
Rate alarms must be calibrated at intervals not to exceed: correct answers yearly
A film badge/TLD records what? correct answers total dose history for the period worn
When performing radiography in a permanent radiographic installation equipped with an area
monitor, the technician is not required to correct answers wear a rate alarm
A direct reading ionization chamber, such as a dosimeter, has the advantage of providing an
correct answers immediate dose history since last time charged
A radiographer's survey meter is showing 0 near the source; it can safely be assumed that correct
answers the meter is in an inoperable state; the radiographer should retreat from the source until
an operational meter has replaced the suspect meter
A radiographer reads 7.5 on the 10x scale of the survey meter. What is the current dose rate at
that position? correct answers 75 mR/h
RADIATION SAFETY || WITH 100% ACCURATE
SOLUTIONS.
THE SYMBOL (R) MEANS correct answers ROENTGEN
The acronym RAD means correct answers radiation absorbed dose
The roentgen (R) exposure is measured in correct answers AIR
The symbol mR means correct answers milliroentgen
One roentgen or 1 R is equal to correct answers 1 milliroentgen
The acronym rem stands for correct answers roentgen equivalent man
The initialism QF stands for correct answers quality factor
The quality factor for X-ray and gamma rays is correct answers 1
The quality factor for alpha (ray) particles is correct answers 1
Activity of radioactive material is measured in correct answers curies
Becquerels and curies are units of measurement of: correct answers decay rate
Atoms that have excess energy and are unstable are known as correct answers radioactive
Elementary particle units with a negative electrical charge and a mass approximately equal to
1/1840 that of a proton are correct answers electrons
Positively charged elementary particles swith a mass approximately equal to 1840 times that of
an electron, or 1 AMU, are known as correct answers protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called correct
answers neutrons
The area known as the center of an atom is called the correct answers nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or escape of the
byproduct material is a: correct answers sealed source
A tube through which the radioactive source travels when inside a radiographic exposure device
is a/an correct answers S tube
, Survey meters must be calibrated at intervals not to exceed: correct answers six months and/or
after instrument servicing except for battery changes
A survey meter must becapable of measuring a range of correct answers 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of correct answers activity
An analog survey meter must be calibrated on each scale at two points approximately correct
answers 33% and 66% of the scale's potential
The process that results in the removal of orbital electrons from atoms resulting in the formation
of ion pairs is called correct answers ionization
The fact that gasses bombarded by ionizing radiation become conductors of electrical current
make them useful in correct answers detection equipment
A dosimeter must be capable of reading a range of correct answers 0-200 mR (0-2 mSv)
Pocket ion chambers must be capable of reading correct answers 200 mR (2 mSv)
An exposure rate is measured by: correct answers survey meter
What dosimeters (dosimetric devices) are least affected by moisture? correct answers TLDs
Full deflection of a survey meter while on battery check means: correct answers meter may or
may not be working properly
Dosimeters must be calibrated at intervals not to exceed: correct answers annually
Rate alarms must be calibrated at intervals not to exceed: correct answers yearly
A film badge/TLD records what? correct answers total dose history for the period worn
When performing radiography in a permanent radiographic installation equipped with an area
monitor, the technician is not required to correct answers wear a rate alarm
A direct reading ionization chamber, such as a dosimeter, has the advantage of providing an
correct answers immediate dose history since last time charged
A radiographer's survey meter is showing 0 near the source; it can safely be assumed that correct
answers the meter is in an inoperable state; the radiographer should retreat from the source until
an operational meter has replaced the suspect meter
A radiographer reads 7.5 on the 10x scale of the survey meter. What is the current dose rate at
that position? correct answers 75 mR/h
