1. (1) Radiation surveys must be conducted by a qualified expert to verify:

   1. (a) Dose of radiation per screening and maximum allowable scans per year for any individual at stated dosage per screening;
   2. (b) Radiation leakage at the surface, within radiation screening zone, at operator position, and surrounding areas. If the radiation survey conducted by a qualified expert indicates the operators could receive 10 percent of the occupational worker's annual dose limit of 5 rem, a dosimetry badge shall be worn while within the radiation screening zone;
   3. (c) Safety interlocks are functioning properly;
   4. (d) Operation and emergency procedures are in place and used as appropriate;
   5. (e) Training program and training log are in place and used as appropriate; and
   6. (f) Any other parameters specified by the manufacturer.

2. (2) The registrant must ensure that radiation surveys are completed:

   1. (a) Prior to first use and upon replacement of security screening system;
   2. (b) Every 10 to 14 months;

   3. (c) Within 30 days following any maintenance that affects:

      1. (i) Radiation shielding;
      2. (ii) Shutter mechanism;
      3. (iii) Radiation production components; and
   4. (d) Within 30 days following any alteration or incident that may have damaged the system in a way that unintended radiation emission occurs.
3. (3) A qualified expert will provide a summary of each radiation survey to the registrant, outlining results and recommendations for corrections. Corrections must be made within 30 days of receiving the recommendations.

[Statutory Authority: RCW 70.388.040. WSR 25-01-051, s 246-230-070, filed 12/11/24, effective 1/11/25.]