Utah Administrative Code
Topic - Environmental Quality
Title R313 - Waste Management and Radiation Control, Radiation
Rule R313-28 - Use of X-Rays in the Healing Arts
Section R313-28-52 - Radiographic Systems Other Than Fluoroscopic, Dental Intraoral, or Computed Tomography - Radiation Exposure Control Devices
Current through Bulletin 2024-06, March 15, 2024
(1) Exposure Initiation. Means shall be provided to initiate the radiation exposure by a deliberate action on the part of the operator, for example, the depression of a switch. Radiation exposure shall not be initiated without a deliberate action. In addition, it shall not be possible to initiate an exposure when the timer is set to a "zero" or "off" position if either position is provided.
(2) Exposure termination. Means shall be provided to terminate the exposure at a preset time interval, preset product of current and time, a preset number of pulses, or a preset radiation exposure to the image receptor. Except for dental panoramic systems, termination of an exposure shall cause automatic resetting of the timer to its initial setting or to "zero."
(3) Manual Exposure Control: An x-ray control shall be incorporated into x-ray systems so that an exposure can be terminated at times except for:
(4) Automatic EXPOSURE controls, phototimers. When automatic EXPOSURE control is provided:
(5) Exposure Indication. Means shall be provided for visual indication observable at or from the operator's protected position whenever x-rays are produced. In addition, a signal audible to the operator shall indicate that the exposure has terminated.
(6) Exposure Duration, Timer, Linearity. For systems having independent selection of exposure time settings, the average ratio of exposure to the indicated milliampere-seconds product obtained at two consecutive timer settings or at two settings not differing by more than a factor of two shall not differ by more than 0.10 times their sum.
(7) Exposure Control Location. The x-ray exposure control shall be placed so that the operator can view the patient while making the exposure.
(8) Operator Protection.