4003 1S - - CRITERIA F@R ESTABLISHING SHORT TERM PERMISSIBLE XNGESTION @F FALLOUT MATERIAL Gordon M. Dunning Division of Biology and Medicine Atomic Erergy Commission Washington, D. C. The criteria for establishing permissible ingestion of radioactive fallout material under emergency conditions for several weeks following a nuclear detonation are dependent primarily on exposures to the, &. ‘be ec. f gastrointestinal tract from the gross fission product activity, thyroid from the isotopes of iodine and, bone, principally fram gr??? sr®9 paleUe ee e Sy : 2 gr ENN The following principal assumptions are used in calculating the doses ec SS y By XL 8 SL SRY I. 7 Doses to the Gaatrointestinal Tract : - 8 N) \ to the gastrointestinal tract of acclts: We OO ° . _o = i &. The calculatiozs are based on the methods contained in ff NS 8 BN oN reference one. O mC jis b. : The fallout material is $0 perce=xt insoluble. (See IV. Discussion below). c. The activity decays acc&rding to the principle of (time) -l.2 . WAM ~F ~~ US DO p—_ae NeR a ea c s bPe LG FIN eeeee . . Y 82 5 aw WEDIDNE, HEALTH @ SW ST na COM fore t re ey RBor e we m ll ats Vatali_ wt Convection DRay ~CP -se Es Man 2t7e / may ae Jol # 2235 f - rr A a —! 1 te S ee 7 ee ses om ee iz 5 z< SE