U.S. Nuclear Regulatory Commission
Question 429: A "Note" added to the answer to Question 126
clarifies the answer with respect to nuclear power plants.
Does this clarification also apply to non-power reactor
facilities?
Answer: Yes. As indicated in that "Note", workers at
nuclear power plants, for whom individual monitoring is
required and who are outside restricted areas need not wear
personal dosimeters to measure external doses from
effluents. However, they should wear personal dosimeters
when performing work with or near licensed materials that
are sources of external occupational exposure (e.g., when
performing a radiation survey of a vehicle loaded with
radioactive material ready for shipping.) (Reference: 10
CFR 20.1502).
NOTE: Questions 444, 445, and 446 relate to determining
whether occupational radiation dose monitoring of an
individual is required (i.e., is the individual likely to
exceed 10% of an applicable limit?)