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Question 10: Why does the revised Part 20 still require
Form 4?
Answer: Form 4 is used as a cumulative record of
exposures at each licensee facility and serves as a
mechanism for transmitting data from one licensee to
another. Licensees must attempt to obtain the information
on lifetime cumulative occupational radiation dose on Form
4, or equivalent, for all workers requiring monitoring.
Licensees must obtain that information for occupational
radiation doses received during the current year and prior
to permitting a Planned Special Exposure. (See 10 CFR
20.2104.) Form 4 is not transmitted to the NRC. Form 5 is
a summary of annual exposure and may have more frequent
entries. The data on several previous Form 5's might be
used to prepare a summary Form 4. The Form 5 will be
provided to the NRC annually for workers in 7 classes of
licensed facilities under the revised Part 20. (References:
10 CFR 20.2104, 10 CFR 20.2206)