or sickness and-ather tectore,,Regardless ofthe couse of individu},94 ffer~ “ths ences from the mean, a smooth,degcription, of the body burden end activity ingestion rate for the population could be adopted. + 4 , On this basis a declining contin: + ae uous uptake model wae used. Internal Dose Equivalent Rates ce bee The approximate instantaneous dose equivalent rates for the total body were determined from the body, burden data illustrated in Figures 7, and 8 and from the following equation , _, tw gl, (4) the total body dose equivalent rate, mRep y", ae =* where 1 3 equilibrium dose equivalent rate to the total body per unit body AEE + radioactive atoms were distributed among the body tissues as they would be fol- hasty The approximate nature of the estimate was due to the assumption that the 2,355 q = instanteous body burden, uci. wai SMRaeE wee 2M. burden, mRem y~! ucim!, lowing constant continuous uptake for periods of time much greater than the mean residence time for the total body. assumed. In the case of 906, 862 of equilibrium was These assumptions were not used in the estimate of the total dose equivalent. In addition, since mean adult body burdens were computed, a factor of 1.2 was needed to adjust for differences in body mass relative to a 70 kila~ gram adult. Table 5 lists values of I which were determined from information given in ICRP59 and corrected for body masse differences. 30 TYP Gr yg ae « faye Nes AM ee elena ls a4 eh te aa