r arve Onn ‘oper a the ey Re Attachment 1 T {ly Radionuclide Intake Associated With The Maximum Permissible Body Rurden* ‘Tog ——a Max. permissible burden, occupational exposure, 30 uCi (5 rad/yr) " " " " individuals in pop., 3 pCi (.5 rad/yr) suitable sample, 1 pCi (.17 rad/yr) Effective half-life is 100 days (See FRC Report No. 7, page 25). , For conditions of continuous intake, the daily intake associated witha gion equilibrium organ burden can be determined fram the following: By = Ro Th I. where B, = Equilibrium organ burden Ry = Daily intake Th = Mean time in reference organ -I f ve Fraction of intake reaching reference organ through ingesti:n "References are, (1) Report of ICRP Committee II as published in Health Physics, June 1960, and (2) AEC 0524, June 1967. QTC, USE SRY