§ 225.101a. Radiographic X-ray systems.
Radiographic X-ray systems shall conform to the following:
(1) The leakage radiation from the source assembly measured at a distance of 1 meter in any direction from the source may not exceed 100 mR (25.8 µC/kg) in 1 hour when the X-ray tube is operated at its leakage technique factors. Compliance shall be determined by measurements averaged over an area of 100 square centimeters with no linear dimension greater than 20 centimeters.
(2) The X-ray system shall be equipped with collimators which are capable of restricting the useful beam to the area of interest. Collimators shall provide the same degree of protection required in paragraph (1).
(3) A means shall be provided to terminate the exposure after a preset time, a preset to image receptor or a preset product of exposure time and tube current.
(4) The X-ray control shall have a dead-man type exposure switch.
(5) The X-ray controls shall indicate the technique factors, such as kilovoltage, tube current and exposure time or the product of tube current and exposure time.
(6) The X-ray system shall be labeled with a readily discernible sign bearing the radiation symbol and the words ‘‘CAUTION RADIATION—THIS EQUIPMENT PRODUCES RADIATION WHEN ENERGIZED’’ or words having a similar intent, near any switch that energizes the X-ray tube.
(7) For X-ray systems, an easily visible warning light shall be located adjacent to the X-ray tube and labeled with the words ‘‘X-RAY ON’’ or words having a similar intent. The warning light shall be illuminated only when the X-ray tube is energized or only when the shutter is open.
(8) The registrant shall perform radiation surveys to demonstrate compliance with 10 CFR 20.1301 (relating to dose limits for individual members of the public) and maintain records of these surveys for inspection by the Department for 5 years:
(i) upon acceptance of the equipment;
(ii) following maintenance requiring the disassembly or removal of any shielding component; and
(iii) when a visual inspection reveals an abnormal condition.
(9) The registrant shall test on-off switches, interlocks and safety devices at intervals not exceeding 1 year and make repairs as necessary to maintain all safety features including warning labels. Records of these tests shall be maintained for inspection by the Department for 5 years.
Source The provisions of this § 225.101a added August 11, 2023, effective 90 days after publication, 53 Pa.B. 4977.
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