(1) Each source of radiation shall be provided with a lock or lockable outer container designed to prevent unauthorized or accidental production of radiation or removal or exposure of a sealed source and shall be kept locked at all times except when under the direct surveillance of a radiographer or radiographer's assistant, or as may be otherwise authorized pursuant to ARM 37.14.833. Each storage container likewise shall be provided with a lock and shall be kept locked when containing sealed sources except when the container is under the direct surveillance of a radiographer or radiographer's assistant.

(2) Radiographic exposure devices and storage containers, prior to being moved from 1 location to another and also prior to being secured at a given location, shall be locked and surveyed to assure that the sealed source is in the shielded position.