(1) A licensee who provides mobile medical service shall:

(a) Obtain a letter signed by the management of each client to whom services are rendered that permits the use of radioactive material at the client's address and clearly delineates the authority and responsibility of the licensee and the client;

(b) Check instruments used to measure the activity of unsealed radioactive material for proper function before medical use at each client's address or on each day of use, whichever is more frequent. At a minimum, the check for proper function required by this section must include a constancy check;

(c) Check survey instruments for proper operation with a dedicated check source before use at each client's address; and

(d) Before leaving a client's address, survey all areas of use to ensure compliance with chapter 246-221 WAC.

(2) A mobile medical service may not have radioactive material delivered from the manufacturer or the distributor to the client unless the client has a license allowing possession of the radioactive material. Radioactive material delivered to the client must be received and handled in conformance with the client's license.

(3) A licensee providing mobile medical services shall retain the letter required in subsection (1)(a) of this section and the record of each survey required in subsection (1)(d) of this section in accordance with WAC 246-240-581.