CESIUM-137 METHODOLOGY For 13766 Radiological and 6064, the Protection” — and Protection and Measurements” INDOS code-? are used published; however, year. methods for as the of the the National developed dose International Council by Killough and calculations. This Commission on Radiation Rohwer code on in is their used the output is modified to show the body burdens as for each For 13766, which is of major importance in the Marshall Islands, the model consists of two exponential components with half-lives of 2 and 110 d, with 10% of the compartment. intake These going data are to the 2-d consistent compartment with preliminary Brookhaven National Laboratory on the half-life of in the Marshallese.~" a mean of 114 d females the The average results (range: mean value 76 to 178 d) is 83d and the 90% to data the obtained from 10 Marshallese males 63 to by long-term compartment for the long-term compartment. (range: 110-d 126d). The gut showed For 21 transfer coefficient for 1376. is 1. TRANSURANIC RADIONUCLIDES METHODOLOGY For the ingestion pathway, isotopes is 1x 10¢ and for the gut-to-blood transfer coefficient 2Al A it is 5x io (see Ref. for Pu 22). The critical organs are bone and liver with 100-y biological half-lives for Pu and Am in bone and 40 y in liver. Of the Pu and Am transferred to the blood, 45% is and assumed to reach the bone 45% is assumed to reach the liver. The remaining 10% is distributed among other organs. DIETARY INTAKE The doses reported here are calculated assuming a daily intake of 200 ¢g of fish muscle tissue and 10 g of clam muscle tissue. The 200 g/d intake of fish is an upper limit from two different surveys conducted at various atolls in the Marshall Islands. !? would be less than 200 g/d. The average daily intake under normal conditions The dose resulting from the daily intake of anything other than 200 g can be easily calculated from the ratio of the newly assumed intake to the 200 g/d intake. skin make up a portion of the diet, If other organs such as fish liver or the resulting doses can be computed from the data in Ref. 7 and the appropriate values for daily intake.