Pennsylvania Code & Bulletin
COMMONWEALTH OF PENNSYLVANIA

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25 Pa. Code § 228.72. Selection of radiation type.

§ 228.72. Selection of radiation type.

 Equipment capable of X-ray therapy or electron therapy, or both, must meet all of the following additional requirements:

   (1)  Irradiation may not be possible until a selection of radiation type and appropriate energy has been made and displayed at the control panel.

   (2)  An interlock system shall be provided to insure that the equipment can emit only the radiation type which has been selected.

   (3)  An interlock system shall be provided to prevent irradiation if selected operations carried out in the treatment room do not agree with the selected operations carried out at the control panel.

   (4)  An interlock system shall be provided to prevent:

     (i)   Irradiation with X-rays except to obtain a port film when electron applicators are fitted.

     (ii)   Irradiation with electrons when accessories specific for X-ray therapy are fitted.

   (5)  For new equipment, a system shall be provided to terminate irradiation if the energy of the electrons striking either the X-ray target or electron window deviates by more than +20% or 3 MeV, whichever is smaller, from the selected nominal energy.

Source

   The provisions of this §  228.72 adopted October 2, 1998, effective October 3, 1998, 28 Pa.B. 4894; amended October 26, 2018, effective January 24, 2019, 48 Pa.B. 6791. Immediately preceding text appears at serial page (304593).



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