§ 835.209. Concentrations of radioactive material in air.
87 words·~1 min read·
/us/cfr/t10/s§ 835.209·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)The derived air concentration
(DAC)values given in appendices A and C of this part shall be used in the control of occupational exposures to airborne radioactive material.
(b)The estimation of internal dose shall be based on bioassay data rather than air concentration values unless bioassay data are:
(1)Unavailable;
(2)Inadequate; or
(3)Internal dose estimates based on air concentration values are demonstrated to be as or more accurate. [58 FR 65485, Dec. 14, 1993, as amended at 63 FR 59682, Nov. 4, 1998]