25 Pa. Code § 228.33a - Facility and shielding requirements

In addition to the requirements in Chapter 219 (relating to standards for protection against radiation), the following are required:

(1) The control panel shall be located outside the treatment or irradiation room.
(2) For accelerators not used in the healing arts, provision shall be made to permit continuous observation of the material being irradiated and any transfer or conveyance of material within the irradiation room.
(3) For accelerators used in the healing arts, provision shall be made to permit continuous observation of and communication with the patient during irradiation.
(4) Windows, mirror systems or closed-circuit television viewing screens used for observing the patient or the material being irradiated shall be located so that the operator can maintain direct surveillance over both the control panel and the patient or the material being irradiated.
(5) If the surveillance conducted under paragraph (4) is provided solely by electronic means, and if a malfunction of this surveillance equipment occurs, irradiation activities shall cease until repair of that surveillance equipment is performed and the equipment is found to be functioning normally.
(6) Irradiation or treatment room entrances shall be provided with warning lights in a readily observable position near the outside of access doors. These will indicate when the useful beam is on.
(7) Interlocks shall be provided so that entrance or access doors are closed before irradiation or treatment can be initiated or continued.
(8) For accelerators used to irradiate materials by means of a transfer or conveyance system, a means shall be provided which either terminates the irradiation or prevents entry if an individual attempts access to the irradiation room.


25 Pa. Code § 228.33a
The provisions of this § 228.33a adopted October 2, 1998, effective 10/3/1998, 28 Pa.B. 4894.

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