(1) A licensee shall retain a record of the basis for authorizing the release of an individual in accordance with WAC 246-240-122, if the total effective dose equivalent is calculated by:
- (a) Using the retained activity rather than the activity administered;
- (b) Using an occupancy factor less than 0.25 at one meter;
- (c) Using the biological or effective half-life; or
- (d) Considering the shielding by tissue.
- (2) A licensee shall retain a record that the instructions required by WAC 246-240-122(2) were provided to a breast-feeding female if the radiation dose to the infant or child from continued breast-feeding could result in a total effective dose equivalent exceeding five mSv (0.5 rem).
- (3) The records required by subsections (1) and (2) of this section must be retained for three years after the date of release of the individual.
[Statutory Authority: RCW 70A.388.040 and 70A.388.110. WSR 22-19-084, § 246-240-578, filed 9/20/22, effective 10/21/22. Statutory Authority: RCW 70.98.050. WSR 06-05-019, § 246-240-578, filed 2/6/06, effective 3/9/06.]