ASNT Study Guide - Industrial
Radiography Radiation Safety
Becquerels and curies are units of measurement of:
a. physical size of the source
b. gray per hour
c. decay rate
d. roentgen per hour - CORRECT ANSWER-c. decay rate
Atoms that have excess energy and are unstable are known as:
a. radioactive
b. radioactivity
c. balanced
d. weighted - CORRECT ANSWER-a. radioactive
Elementary particles units with a negative electrical charge and a mass approximately
equal to 1/1840 that of a proton are:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-a. electrons
Positively charged elementary particles with a mass approximately equal to 1840 times
that of an electron, or 1 AMU, are known as:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-b. protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-c. neutrons
The area known as the center of an atom is called the:
,a. electron
b. nucleus
c. proton
d. neutron - CORRECT ANSWER-b. nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or
escape of the byproduct material is a:
a. drum
b. pig
c. sealed source
d. container - CORRECT ANSWER-c. sealed source
A tube through which the radioactive source travels when inside a radiographic
exposure device is a/an:
a. port tube
b. guide tube
c. S tube
d. exit tube - CORRECT ANSWER-c. S tube
Survey meters must be calibrated at intervals not to exceed:
a. three months and/or after instrument servicing except for battery changes
b. six months and/or after instrument servicing except for battery changes
c. annually and after instrument servicing except for battery changes
d. daily and after instrument servicing except for battery changes - CORRECT
ANSWER-b. six months and/or after instrument servicing except for battery changes
A survey meter must be capable of measuring a range of:
a. 0 to 1000 mR/h (0 to 10 mSv/h)
b. 2 to 1000 R/h (0.02 to 10 Sv/h)
c. 0 to 1000 R/h (0 to 10 Sv/h)
d. 2 to 1000 mR/h (0.02 to 10 mSv/h) - CORRECT ANSWER-d. 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of:
a. physical size of the source
b. activity
c. gray per hour
d. roentgen per hour - CORRECT ANSWER-b. activity
An analog survey meter must be calibrated on each scale at two points approximately:
,a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - CORRECT ANSWER-a. 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:
a. excitation
b. radioactivity
c. decay
d. ionization - CORRECT ANSWER-d. ionization
The fact that gases bombarded by ionizing radiation become conductors of electrical
current make them useful in:
a. X-ray transformers
b. cathode tubes
c. detection equipment
d. gasses cannot conduct electrical charges - CORRECT ANSWER-c. detection
equipment
A dosimeter must be capable of reading a range of:
a. 0-100 mR (0-1 mSv)
b. 0-200 mR (0-2 mSv)
c. 0-500 mR (0-5 mSv)
d. 0-1 R (0-10 mSv) - CORRECT ANSWER-b. 0-200 mR (0-2 mSv)
Pocket ion chambers must be capable of reading:
a. 100 mR (1 mSv)
b. 500 mR (5 mSv)
c. 200 mR (2 mSv)
d. 999 mR (9.99 mSv) - CORRECT ANSWER-c. 200 mR (2 mSv)
An exposure rate is measured by:
a. survey meter
b. a dosimeter
c. rate alarm
d. TLD/film badge - CORRECT ANSWER-a. survey meter
What dosimeters (dosimetric devices) are least affected by moisture?
, a. digital dosimeters
b. film badges
c. TLDs
d. ion chambers - CORRECT ANSWER-c. TLDs
Full deflection of a survey meter while on battery check means:
a. meter is working properly and has good batteries
b. meter may or may not be working properly
c. meter is working properly and battery strength is not an issue
d. meter is unusable - CORRECT ANSWER-b. meter may or may not be working
properly
Dosimeters must be calibrated at intervals not to exceed:
a. three months
b. six months
c. biannually
d. annually - CORRECT ANSWER-d. annually
Rate alarms must be calibrated at intervals not to exceed:
a. yearly
b. quarterly
c. monthly
d. biannually - CORRECT ANSWER-a. yearly
A film badge/TLD records what?
a. dose rate
b. exposure rate
c. total dose history for the period worn
d. daily dose - CORRECT ANSWER-c. 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:
a. use a survey meter
b. wear a film badge or TLD
c. wear a rate alarm
d. wear a dosimeter - CORRECT ANSWER-c. wear a rate alarm
A direct reading ionization chamber, such as a dosimeter, has the advantage of
providing an:
a. accurate dose history for the month
Radiography Radiation Safety
Becquerels and curies are units of measurement of:
a. physical size of the source
b. gray per hour
c. decay rate
d. roentgen per hour - CORRECT ANSWER-c. decay rate
Atoms that have excess energy and are unstable are known as:
a. radioactive
b. radioactivity
c. balanced
d. weighted - CORRECT ANSWER-a. radioactive
Elementary particles units with a negative electrical charge and a mass approximately
equal to 1/1840 that of a proton are:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-a. electrons
Positively charged elementary particles with a mass approximately equal to 1840 times
that of an electron, or 1 AMU, are known as:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-b. protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-c. neutrons
The area known as the center of an atom is called the:
,a. electron
b. nucleus
c. proton
d. neutron - CORRECT ANSWER-b. nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or
escape of the byproduct material is a:
a. drum
b. pig
c. sealed source
d. container - CORRECT ANSWER-c. sealed source
A tube through which the radioactive source travels when inside a radiographic
exposure device is a/an:
a. port tube
b. guide tube
c. S tube
d. exit tube - CORRECT ANSWER-c. S tube
Survey meters must be calibrated at intervals not to exceed:
a. three months and/or after instrument servicing except for battery changes
b. six months and/or after instrument servicing except for battery changes
c. annually and after instrument servicing except for battery changes
d. daily and after instrument servicing except for battery changes - CORRECT
ANSWER-b. six months and/or after instrument servicing except for battery changes
A survey meter must be capable of measuring a range of:
a. 0 to 1000 mR/h (0 to 10 mSv/h)
b. 2 to 1000 R/h (0.02 to 10 Sv/h)
c. 0 to 1000 R/h (0 to 10 Sv/h)
d. 2 to 1000 mR/h (0.02 to 10 mSv/h) - CORRECT ANSWER-d. 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of:
a. physical size of the source
b. activity
c. gray per hour
d. roentgen per hour - CORRECT ANSWER-b. activity
An analog survey meter must be calibrated on each scale at two points approximately:
,a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - CORRECT ANSWER-a. 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:
a. excitation
b. radioactivity
c. decay
d. ionization - CORRECT ANSWER-d. ionization
The fact that gases bombarded by ionizing radiation become conductors of electrical
current make them useful in:
a. X-ray transformers
b. cathode tubes
c. detection equipment
d. gasses cannot conduct electrical charges - CORRECT ANSWER-c. detection
equipment
A dosimeter must be capable of reading a range of:
a. 0-100 mR (0-1 mSv)
b. 0-200 mR (0-2 mSv)
c. 0-500 mR (0-5 mSv)
d. 0-1 R (0-10 mSv) - CORRECT ANSWER-b. 0-200 mR (0-2 mSv)
Pocket ion chambers must be capable of reading:
a. 100 mR (1 mSv)
b. 500 mR (5 mSv)
c. 200 mR (2 mSv)
d. 999 mR (9.99 mSv) - CORRECT ANSWER-c. 200 mR (2 mSv)
An exposure rate is measured by:
a. survey meter
b. a dosimeter
c. rate alarm
d. TLD/film badge - CORRECT ANSWER-a. survey meter
What dosimeters (dosimetric devices) are least affected by moisture?
, a. digital dosimeters
b. film badges
c. TLDs
d. ion chambers - CORRECT ANSWER-c. TLDs
Full deflection of a survey meter while on battery check means:
a. meter is working properly and has good batteries
b. meter may or may not be working properly
c. meter is working properly and battery strength is not an issue
d. meter is unusable - CORRECT ANSWER-b. meter may or may not be working
properly
Dosimeters must be calibrated at intervals not to exceed:
a. three months
b. six months
c. biannually
d. annually - CORRECT ANSWER-d. annually
Rate alarms must be calibrated at intervals not to exceed:
a. yearly
b. quarterly
c. monthly
d. biannually - CORRECT ANSWER-a. yearly
A film badge/TLD records what?
a. dose rate
b. exposure rate
c. total dose history for the period worn
d. daily dose - CORRECT ANSWER-c. 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:
a. use a survey meter
b. wear a film badge or TLD
c. wear a rate alarm
d. wear a dosimeter - CORRECT ANSWER-c. wear a rate alarm
A direct reading ionization chamber, such as a dosimeter, has the advantage of
providing an:
a. accurate dose history for the month
