Oregon Oregon Health Authority, Public Health Division

Rule Rule 333-120-0150
Radiation Dose Limits: 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 OAR 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults) 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 higher 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 the individuals involved are:

(a)

Informed of the purpose of the planned operation;

(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 OAR 333-120-0630 (Records: Determination of Prior Occupational Dose)(2), during the lifetime of the individual for each individual involved.

(5)

Subject to OAR 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults)(2), the licensee or registrant does 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 OAR 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults)(1) in any year; and

(b)

Five times the annual dose limits in OAR 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults)(1) during the individual’s lifetime.

(6)

The licensee or registrant maintains records of the conduct of a planned special exposure in accordance with OAR 333-120-0640 (Records of Planned Special Exposures) and submits a written report in accordance with OAR 333-120-0730 (Reports of Planned Special Exposures and Individual Monitoring).

(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 is not to be considered in controlling future occupational dose of the individual under OAR 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults)(1) but is to be included in evaluations required by 333-120-0100 (Radiation Dose Limits: Occupational Dose Limits For Adults)(4) and (5).
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Last accessed
Jun. 8, 2021