Iowa Admin. Code r. 641-40.20 - Planned special exposures
A licensee or registrant may authorize an adult worker to receive doses in addition to and accounted for separately from the doses received under the limits specified in 40.15(136C) provided that each of the following conditions is satisfied:
(1)
The licensee or registrant authorizes a planned special exposure only in an
exceptional situation when alternatives that might avoid the dose estimated to
result from the planned special exposure are unavailable or
impractical.
(2) The licensee or
registrant, and employer if the employer is not the licensee or registrant,
specifically authorizes the planned special exposure, in writing, before the
exposure occurs.
(3) Before a
planned special exposure, the licensee or registrant ensures that each
individual involved is:
a. Informed of the
purpose of the planned operation; and
b. Informed of the estimated doses and
associated potential risks and specific radiation levels or other conditions
that might be involved in performing the task; and
c. Instructed in the measures to be taken to
keep the dose ALARA considering other risks that may be present.
(4) Prior to permitting an
individual to participate in a planned special exposure, the licensee or
registrant ascertains prior doses as required by 40.19(2) during the lifetime
of the individual for each individual involved.
(5) Subject to 40.15(2), the licensee or
registrant shall not authorize a planned special exposure that would cause an
individual to receive a dose from all planned special exposures and all doses
in excess of the limits to exceed:
a. The
numerical values of any of the dose limits in 40.15(1) in any year;
and
b. Five times the annual dose
limits in 40.15(1) during the individual's lifetime.
(6) The licensee or registrant maintains
records of the conduct of a planned special exposure in accordance with
40.85(136C) and submits a written report in accordance with
40.98(136C).
(7) The licensee or
registrant records the best estimate of the dose resulting from the planned
special exposure in the individual's record and informs the individual, in
writing, of the dose within 30 days from the date of the planned special
exposure. The dose from planned special exposures shall not be considered in
controlling future occupational dose of the individual pursuant to 40.15(1) but
shall be included in evaluations required by 40.20(1) and 40.20(2).
Notes
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