Table 230. Cumulative rems to organs from 239, 240.5. via inhalation pathway, lung. LIWVING S4TTSPN 1. MODIFIER NMOOTF IED 1}. MODIFIED YHMOD IF TED Ill. MODIFIED UNMODIFIED Iv. MODIFIED UNMODIFIED V. MODIFIED UNMODIFIED VI. MODIFIED UNMODIFIED PLI-G IN SOIL EMPOSED S YRS 18 VFS 38 YRS S58 YRS 7@ YRS f.05 4.8086 0.8661 8.0004 @. 0806 @.808089 8.12 8.6841 8.8885 8.BH082 6.8016 8.0822 2.00 8.8817 8.8844 8.6152 6.8268 8.6368 4.7) 6.808408 8.8103 8.8357 6.0611 6.0846 ?, 38 8.8863 8.8161 @.@555 6.8949 @.1314 17.88 6.8146 8.8374 6.12392 8.2218 6.3660 15.468 8.01293 8.6358 6.1148 6.1954 8.2788 cr .@8 8.8602 4.1694 8.5952 1.6814 1.3868 7.38 8.9863 8.0161 9.8555 8.8949 4.1314 17.62 8.8151 4.0387 8.1338 8.2288 6.3168 3.58 8.8882 0.8289 H.8°22 @.1235 @.1718 14.70 68.8126 @.a323 8.1117 8.1911 @.2646 disappears only by radioactive decay, t i,e., that no other processes are in Dose (rem) = «ef operation which reduce the nuclide avail- Oo ability in the food chain, Therefore -Art . C= Coe C an dt t , where Cy is the concentra - kef tion observed at the time of the survey 0 If man C | man ~o r and r. is the radioactive decay constant, The concentration in man at any time t x(e after initial consumption of the food is: x (e man “At pCi/g to rem and equals 5.1 X 107° -A_) -e (5) where K is a conversion constant from _ Tfnan So Cman ~ MO -rA_t -r r -e man’ ) at, “r “A nan t disintegrations: g- rem and E is the dispCi-MeV: day integration energy of the nuclide in MeV, ), pCi/g. (4) including. a factor for relative biological effectiveness (RBE). The final dose is The dose at any time t after initial con- then determined from the integration of sumption is the equation, I-42 i. e., eer? - 8d git uO