In addition to the requirements under part 4731.2220, a licensee must institute additional measures to ensure that an individual is not able to gain unauthorized or inadvertent access to areas in which radiation levels could be encountered at 500 rads (5 Gy) or more in one hour at one meter from a radiation source or any surface through which the radiation penetrates.
29 SR 755
March 12, 2009
Official Publication of the State of Minnesota
Revisor of Statutes