Minn. R. 4731.2530
RECORDS; PLANNED SPECIAL EXPOSURES
Subpart 1. Required records. For each planned special exposure under part 4731.2060 , a licensee must maintain records that describe: A. the exceptional circumstances requiring the use of a planned special exposure; B. the name of the management official who authorized the planned special exposure and a copy of the signed authorization; C. what actions were necessary; D. why the actions were necessary; E. how doses were maintained ALARA; and F. what individual and collective doses were expected to result and the doses actually received in the planned special exposure. Subp. 2. Retention period. A licensee must retain records under this part until the commissioner terminates each pertinent license requiring the records.