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Ch. 6 ASNT Study Guide_ Industrial Radiography Radiation Safety questions and answers
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Ch. 6 ASNT Study Guide_ Industrial Radiography Radiation Safety questions and answers
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Ch. 6 ASNT Study Guide: IndustrialRadiography Radiation Safety
Boundary and posting requirements are as follows: - correct answer-b. caution radiation area
5 mR/h (50 mSv/h); caution/danger high radiation area 100 mR/h (1 mSv/h); grave danger,
very high radiation area 500 R/h (5 Sv/h)
Caution signs used, unless otherwise authorized by the commission, shall be of a trefoil
design using the colors: - correct answer-d. all of the above
Dosimetry reports received from the accredited NVLAP personnel dosimeter processor must
be maintained by the licensee: - correct answer-d. until the commission terminates the
license
Exposure devices are classified by categories I and II per the ANSI standard N432. What are
these categories? - correct answer-c. Category I: source is exposed outside the shielded
container by mechanical means; Category II: exposes the source through a shutter
mechanism or rotation device in which the source never leaves the device
Film badges must be replaced at intervals not to exceed: - correct answer-a. one month
How many survey meters are required when conducting radiographic operations? - correct
answer-e. a sufficient number of calibrated and operable survey meters
In the event of an off-scale pocket chamber, an individual's film badge/TLD must be
submitted for processing within: - correct answer-9. 24 h
Radiation survey equipment shall be calibrated ______________, and have an overall
accuracy of ______________. - correct answer-e. semiannually; +/- 20%
What are the three classifications of exposure devices - correct answer-b. P- portable; M-
mobile; F-fixed
Which personnel monitoring devices are required prior to performing radiography, excluding
permanent installations? - correct answer-a. direct reading dosimeter, operating rate alarm,
personnel dosimeter
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