ASNT STUDY GUIDE: Industrial
Radiography Radiation Safety
A cobalt source has decayed from its authentic interest after three 1/2-lives. Originally it became
88 Ci (3256 GBq) - ANS-eleven Ci (407 Gbq)
A COBALT SOURCE OF &# Ci is uncovered for a complete 60 min. Assume a 14.Zero R/Ci
aspect, shooting via a three 1/2-price collimator. What could the constrained region be at the
bloodless or collimated aspect of the collimator? - ANS-253 toes (77.44 m)
A manage panel in an X-ray machine should have definitely seen which of the following
statements? - ANS-warning: X-rays produced while energized
A declared pregnant radiographer or assistant may additionally obtain no extra than_______for
the whole being pregnant. - ANS-500 mR (5000 uSv)
A direct studying ionization chamber, which includes a dosimeter, has the benefit of presenting
an - ANS-on the spot dose records on the grounds that remaining time charged
A dosimeter should be capable of studying a number - ANS-zero-two hundred mR (zero-2 mSv)
A movie badge/TLD records what? - ANS-overall dose history for the period worn
A excessive radiation area is defined as "an area handy to people, in which they might receive -
ANS-one hundred mR/h (one thousand uSv/h)
A member of the public or unmonitored individual is authorized to receive up to, however now
not to exceed: - ANS-2 mR/h, a hundred mR/12 months (20 uSv/h, a thousand uSv/yr)
A monitored character might also acquire as much as 5000 mR (50 000 uSv) in keeping with yr.
What would be considered too much radiation exposure to that Individual? - ANS-any useless
publicity to radiation
A non-declared pregnant radiographer or assistant may obtain n greater than: - ANS-5 R
according to year (50 mSv)
A radiation location is described as "a place on hand to individuals, wherein they may receive -
ANS-five mR/h (50 uSv/h)
, A radiographer and assistant are standing in a 2 mR/h (20 uSv/h) area. What could the
assistant's overall dose be after 4 h? - ANS-eight.Zero mR (80 uSv)
A radiographer is receiving 100 mR (1000 uSv) at the crank assembly. The crank assembly is
25 feet (7.62 m) in duration. Where would the "RADIATION AREA" signal be published? -
ANS-111.8 feet (34.08 m)
A radiographer is receiving one hundred mR/h (one thousand uSv/h) at the crank assembly. The
crank assembly is 25 ft (7.Sixty two m) in duration. How long will it take for the radiographer to
acquire a complete dose of 50 mR (500 uSv)? - ANS-30 min
A radiographer reads 7.Five at the 10x scale of the survey meter. What is the modern-day dose
charge at that function? - ANS-75 mR/h
A radiographer's survey meter is displaying zero near the source; it may appropriately be
assumed that - ANS-the meter is in an inoperable country; the radiographer should retreat from
the supply till an operational meter has changed the suspect meter
A constrained place is defined as a place - ANS-to which access is confined for the purpose of
controlling radiation publicity
A sealed supply emits what? - ANS-gamma rays
A transport field is surveyed and found to be 3 mR/h at 39.37 in. (30 uSv/h at 1 m). What label
could be required? - ANS-Yellow III
A supply is being transported with a floor studying of 25 mR and 3 mR at 39.37 in. (250 uSv and
30 uSv at 1 m). Which delivery label ought to be used? - ANS-Yellow III
A source have to be leaked tested - ANS-each six months
A survey tool ought to be able to an accuracy of: - ANS-plus/minus 20%
A survey meter must becapable of measuring a number of - ANS-2 to 1000 mR/h (zero.02 to
ten mSv/h)
A thickness of 0.19 in. (4.Eighty three mm) of lead will reduce the publicity of Ir-192 to 1-half of
its original depth. This is known as the: - ANS-half of-fee layer of lead for the energies related to
Ir-192
A tube thru which the radioactive supply travels whilst inner a radiographic exposure tool is a/an
- ANS-S tube
Radiography Radiation Safety
A cobalt source has decayed from its authentic interest after three 1/2-lives. Originally it became
88 Ci (3256 GBq) - ANS-eleven Ci (407 Gbq)
A COBALT SOURCE OF &# Ci is uncovered for a complete 60 min. Assume a 14.Zero R/Ci
aspect, shooting via a three 1/2-price collimator. What could the constrained region be at the
bloodless or collimated aspect of the collimator? - ANS-253 toes (77.44 m)
A manage panel in an X-ray machine should have definitely seen which of the following
statements? - ANS-warning: X-rays produced while energized
A declared pregnant radiographer or assistant may additionally obtain no extra than_______for
the whole being pregnant. - ANS-500 mR (5000 uSv)
A direct studying ionization chamber, which includes a dosimeter, has the benefit of presenting
an - ANS-on the spot dose records on the grounds that remaining time charged
A dosimeter should be capable of studying a number - ANS-zero-two hundred mR (zero-2 mSv)
A movie badge/TLD records what? - ANS-overall dose history for the period worn
A excessive radiation area is defined as "an area handy to people, in which they might receive -
ANS-one hundred mR/h (one thousand uSv/h)
A member of the public or unmonitored individual is authorized to receive up to, however now
not to exceed: - ANS-2 mR/h, a hundred mR/12 months (20 uSv/h, a thousand uSv/yr)
A monitored character might also acquire as much as 5000 mR (50 000 uSv) in keeping with yr.
What would be considered too much radiation exposure to that Individual? - ANS-any useless
publicity to radiation
A non-declared pregnant radiographer or assistant may obtain n greater than: - ANS-5 R
according to year (50 mSv)
A radiation location is described as "a place on hand to individuals, wherein they may receive -
ANS-five mR/h (50 uSv/h)
, A radiographer and assistant are standing in a 2 mR/h (20 uSv/h) area. What could the
assistant's overall dose be after 4 h? - ANS-eight.Zero mR (80 uSv)
A radiographer is receiving 100 mR (1000 uSv) at the crank assembly. The crank assembly is
25 feet (7.62 m) in duration. Where would the "RADIATION AREA" signal be published? -
ANS-111.8 feet (34.08 m)
A radiographer is receiving one hundred mR/h (one thousand uSv/h) at the crank assembly. The
crank assembly is 25 ft (7.Sixty two m) in duration. How long will it take for the radiographer to
acquire a complete dose of 50 mR (500 uSv)? - ANS-30 min
A radiographer reads 7.Five at the 10x scale of the survey meter. What is the modern-day dose
charge at that function? - ANS-75 mR/h
A radiographer's survey meter is displaying zero near the source; it may appropriately be
assumed that - ANS-the meter is in an inoperable country; the radiographer should retreat from
the supply till an operational meter has changed the suspect meter
A constrained place is defined as a place - ANS-to which access is confined for the purpose of
controlling radiation publicity
A sealed supply emits what? - ANS-gamma rays
A transport field is surveyed and found to be 3 mR/h at 39.37 in. (30 uSv/h at 1 m). What label
could be required? - ANS-Yellow III
A supply is being transported with a floor studying of 25 mR and 3 mR at 39.37 in. (250 uSv and
30 uSv at 1 m). Which delivery label ought to be used? - ANS-Yellow III
A source have to be leaked tested - ANS-each six months
A survey tool ought to be able to an accuracy of: - ANS-plus/minus 20%
A survey meter must becapable of measuring a number of - ANS-2 to 1000 mR/h (zero.02 to
ten mSv/h)
A thickness of 0.19 in. (4.Eighty three mm) of lead will reduce the publicity of Ir-192 to 1-half of
its original depth. This is known as the: - ANS-half of-fee layer of lead for the energies related to
Ir-192
A tube thru which the radioactive supply travels whilst inner a radiographic exposure tool is a/an
- ANS-S tube
