WAC 246-243-170
WAC 246-243-170. Security—Precautionary procedures in radiographic operations
(1) During each radiographic operation, the radiographer or radiographer's assistant shall maintain continuous direct visual surveillance of the operation to protect against unauthorized entry into a high radiation area, as defined in chapter 246-220 WAC except:
At permanent radiographic installations where all entryways are locked and the requirements of WAC 246-243-220 are met.
(2) When not in operation or when not under direct surveillance, portable radiation exposure devices shall be physically secured to prevent removal by unauthorized personnel.