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ASNT STUDY GUIDE - INDUSTRIAL
RADIOGRAPHY RADIATION SAFETY
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS | LATEST 2026-
2027 VERSION |RATED A + | NEW AND
REVISED
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 - 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
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d. daily and after instrument servicing except for battery changes -
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) - 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 - 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
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c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - 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 - 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 - ANSWER- c. detection
equipment
A dosimeter must be capable of reading a range of:
a. 0-100 mR (0-1 mSv)
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b. 0-200 mR (0-2 mSv)
c. 0-500 mR (0-5 mSv)
d. 0-1 R (0-10 mSv) - 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) - 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 - ANSWER- a. survey meter
What dosimeters (dosimetric devices) are least affected by moisture?
a. digital dosimeters
b. film badges
c. TLDs
ASNT STUDY GUIDE - INDUSTRIAL
RADIOGRAPHY RADIATION SAFETY
EXAM 200 QUESTIONS AND CORRECT
DETAILED ANSWERS | LATEST 2026-
2027 VERSION |RATED A + | NEW AND
REVISED
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 - 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
,2|Page
d. daily and after instrument servicing except for battery changes -
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) - 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 - 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
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c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - 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 - 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 - ANSWER- c. detection
equipment
A dosimeter must be capable of reading a range of:
a. 0-100 mR (0-1 mSv)
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b. 0-200 mR (0-2 mSv)
c. 0-500 mR (0-5 mSv)
d. 0-1 R (0-10 mSv) - 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) - 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 - ANSWER- a. survey meter
What dosimeters (dosimetric devices) are least affected by moisture?
a. digital dosimeters
b. film badges
c. TLDs
