A registrant shall register each radiation machine facility with the department. A registrant shall include each radiation machine they own or control in a radiation machine facility registration except if:

(1) The radiation machine produces incidental X-rays with an equivalent dose rate that does not exceed 5 µSv/hr (0.5 mrem/hr) at 5 cm from any accessible equipment surface averaged over an area of 10 square centimeters;

(2) The radiation machine is in transit;

(3) The radiation machine is held for sale or lease by X-ray agents; or

(4) The department allows an exemption in accordance with WAC 246-220-050(1).