(1) Each registrant shall maintain records of the following information for three years after the date of each radiographic operation and shall maintain these records for inspection by the department:

(a) A description (or make and model number) of the radiation machine used along with the techniques utilized for each job;

(b) The identity of the radiographer and radiographer's assistant performing the work;

(c) Locations where used and dates of use;

(d) A physical radiation survey made of the boundary of the restricted area during radiographic operations. The maximum reading at the boundary shall be recorded. The records shall indicate approximate distance from source to boundaries and any occupied areas with exposure levels greater than 2 mR in any hour during radiographic operations; and

(e) The model and serial number of the survey meter used in (d) of this subsection.

(2) The requirements of subsection (1) of this section shall not apply in industrial radiography utilizing radiation machines in enclosed interlocked cabinets or rooms which are not occupied during radiographic operations, which are equipped with interlocks such that the radiation machine will not operate unless all openings are securely closed and which is so shielded that every location on the exterior meets conditions for an unrestricted area, as specified in WAC 246-221-060.