(1) In addition to the survey requirement in WAC 246-221-110(1), a person licensed under this chapter shall make surveys to ensure that the maximum radiation levels and average radiation levels from the surface of the main source safe with the sources in the shielded position do not exceed the levels stated in the sealed source and device registry.

(2) The licensee shall make the survey required by subsection (1) of this section at installation of a new source and following repairs to the sources shielding, the sources driving unit, or other electronic or mechanical component that could expose the source, reduce the shielding around the sources, or compromise the radiation safety of the unit or the sources.

(3) A licensee shall retain a record of the radiation surveys required by subsection (1) of this section in accordance with WAC 246-240-629.