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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 336RADIOACTIVE SUBSTANCE RULES
SUBCHAPTER DSTANDARDS FOR PROTECTION AGAINST RADIATION
RULE §336.307Determination of External Dose from Airborne Radioactive Material

(a) Licensees shall, when determining the dose from airborne radioactive material, include the contribution to the deep-dose equivalent, lens dose equivalent, and shallow-dose equivalent from external exposure to the radioactive cloud. See notes 1 and 2 of §336.359, Appendix B, of this title (relating to Annual Limits on Intake (ALI) and Derived Air Concentrations (DAC) of Radionuclides for Occupational Exposure; Effluent Concentrations; Concentrations for Release to Sanitary Sewerage).

(b) Airborne radioactivity measurements and DAC values shall not be used as the primary means to assess the deep-dose equivalent when the airborne radioactive material includes radionuclides other than noble gases or if the cloud of airborne radioactive material is not relatively uniform. The determination of the deep-dose equivalent to an individual shall be based upon measurements using instruments or individual monitoring devices.


Source Note: The provisions of this §336.307 adopted to be effective June 5, 1997, 22 TexReg 4588; amended to be effective August 30, 2001, 26 TexReg 6309

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