Question 438: In general, the nuclear power industry has
concluded that workers are not likely to exceed 10% of the
annual limit on intake, and therefore internal dose
monitoring would not be required. However, some nuclear
power plant licensees plan to continue internal dose
monitoring and record and report monitoring results on a
voluntary basis. (a) If the results of both voluntary
monitoring of the committed effective dose equivalent
(CEDE) and required monitoring of the deep dose equivalent
(DDE) are reported on an individual's NRC Form 5, with
appropriate comments indicating that the CEDE monitoring
results are not required (i.e., are voluntary), are the
CEDE and the DDE required to be summed as the total
effective dose equivalent on the NRC Form 5? (b) If so, is
the remaining available TEDE for the current year in which
the results were obtained determined as 5 rems minus the
year-to-date DDE plus CEDE, or as 5 rems minus the
year-to-date DDE only? (Note: the question assumes that
the doses described are the only doses received by the
individual in the current year.)
Answer: (a) No. If monitoring for DDE is required and
monitoring for CEDE is not required, there is no
requirement to sum the DDE and CEDE.
(b) No answer to this question is needed because the
answer to (a) is "no".] Note: This question and answer
apply to all licensees, not just nuclear power plants.
(Reference: 10 CFR 20.1202).