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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 252. Department of Environmental Quality |
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Chapter 410. Radiation Management |
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Subchapter 11. Use of X-Rays and /or Particles for Therapeutic Purposes in the Healing Arts and Veterinary Medicine |
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Part 5. THERAPEUTIC SYSTEMS OF 1 MEV AND ABOVE |
SECTION 252:410-11-60. Timer
Latest version.
- (a) Systems of 1 MeV or more must have a timer which has a display at the control panel. The timer must have a pre-set time selector and an elapsed time indicator.(b) The timer must terminate irradiation when a pre-selected time has elapsed if a dose monitoring system has not previously terminated irradiation.(c) The timer must be cumulative and activate with the production of radiation. It must retain its reading after irradiation is interrupted or terminated. After irradiation is terminated and before irradiation can be reinitiated, it shall be necessary to reset the elapsed time indicator to zero.(d) When irradiation is terminated, post-1989 systems must require an operator to manually reset the preset time selector before irradiation can be initiated again.