Each licensee shall monitor exposures to radiation and radioactive material at levels sufficient to demonstrate compliance with the occupational dose limits of this subchapter. As a minimum, the following monitoring is required:
  (1) Each licensee shall monitor occupational exposure to radiation from licensed and unlicensed radiation sources under the control of the licensee and shall supply and require the use of individual monitoring devices by:
    (A) adults likely to receive, in one-year from sources external to the body, a dose in excess of 10% of the limits in §336.305(a) of this title (relating to Occupational Dose Limits for Adults);
    (B) minors likely to receive, in one year from sources external to the body, a deep dose equivalent in excess of 0.1 rem (one millisievert), a lens dose equivalent in excess of 0.15 rem (1.5 millisievert), or a shallow dose equivalent to the skin or to the extremities in excess of 0.5 rem (five millisievert);
    (C) declared pregnant women likely to receive during the entire pregnancy, from radiation sources external to the body, a deep dose equivalent in excess of 0.1 rem (one millisievert); and
    (D) individuals entering a high or very high radiation area.
  (2) Each licensee shall monitor (see §336.308 of this title (relating to Determination of Internal Exposure)) the occupational intake of radioactive material by and assess the committed effective dose equivalent to:
    (A) adults likely to receive, in one-year, an intake in excess of 10% of the applicable ALI(s) in Table I, Columns 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); and
    (B) minors likely to receive, in one year, a committed effective dose equivalent in excess of 0.1 rem (one millisievert); and
    (C) declared pregnant women likely to receive, during the entire pregnancy, a committed effective dose equivalent in excess of 0.1 rem (one millisievert).

Source Note: The provisions of this §336.316 adopted to be effective June 5, 1997, 22 TexReg 4588; amended to be effective August 30, 2001, 26 TexReg 6309