178 Health Physics August 2010, Volume 99, Number 2 Table 11. Radionuclides giving the largest organ doses (mGy) from the Bravo test (1954) to adults of four population groups (Majuro residents, Kwajalein residents, Utrik community, and Rongelap Island community) from acute intakes of fallout radionuclides and cumulative percentageof total dose resulting from acute intakes of all 63 nuclides considered. Utrik and Rongelap Island community doses accountfor relocations. All values rounded to two significant digits. Majuro residents Organ and rank* Colon 1 2 3 4 5 6 7 8 9 10 RBM 1 2 3 4 5 6 7 8 9 10 Stomach 1 2 3 4 5 6 7 8 9 10 Thyroid 1 2 3 4 5 6 7 8 9 10 Nuclide Kwajalein residents Dose Cumulative % of organ (mGy) dose? Nuclide Dose Cumulative % of organ (mGy) dose Utrik community Nuclide Rongelap Island community Dose Cumulative % of organ (mGy) dose Cumulative % of organ Nuclide (mGy) dose 39 50 59 68 74 79 83 86 88 89 °°Np BY 'BCe ey *°Mo ‘Te Ta Pr Sr ‘Ru 764 437 221 182 160 138 136 125 105 83 Np Te “Ba "Mo “Ta ‘Ce Rh Pm ‘Spr 7Sb 0.34 0.21 0.093 0.079 0.064 0.058 0.053 0.026 0.025 0.025 31 51 59 67 72 78 83 85 87 90 Np Te “Ba "Mo 'SCe Rh “Ta Pm “7Sb ‘Spr 0.19 0.11 0.048 0.044 0.037 0.033 0.029 0.015 0.014 0.011 32 51 59 66 72 78 83 85 87 89 Np Te 'SCe "Mo By Ba ‘Rh Pm La YTSb 'Te “Sr “Ba Mo Np “Ta a 7Sb BS] a 0.0071 0.0039 0.0038 (0.0015 0.0014 0.0013 0.00084 0.00065 0.00061 0.00038 31 48 64 71 77 83 86 89 92 93 'Te “Ba °Sr Mo Np “Ta a a 27Sb SimTe 0.0039 0.0020 0.0020 0.00085 0.00083 0.00060 0.00045 0.00044 0.00037 0.00023 31 47 63 70 76 81 85 88 91 93 'STe °°Np *°Mo Ba 1S] 'BCe La Sr 27Sb Sim™Te 0.62 0.28 0.28 0.19 0.15 0.064 0.061 0.060 0.058 (0.054 30 43 57 66 73 77 79 82 85 88 'STe °°Np *°Mo 15] 1S] Ba OR Sr '8Ce Sb Np Te 27 a "Mo “Ta '’Ce Rh “Ba a 0.019 0.011 0.010 0.0080 0.0055 0.0054 0.0039 0.0038 0.0032 0.0023 23 36 47 57 64 70 75 79 83 86 Np 'Te BS] a "Mo “Ta '’Ce Rh “Ba a 0.011 0.0060 0.0059 0.0053 0.0031 0.0025 0.0025 0.0024 0.0016 0.0012 23 35 47 58 64 69 74 79 82 84 °°Np 1S] BY 'BCe *°Mo 'STe 2] 1S] ‘Rh Pr 3.8 1.8 1.7 1.1 1.0 0.95 0.84 0.57 0.48 0.29 25 37 47 54 61 67 72 76 79 81 ey BY Ta °°Np Pr 1S] ORh 1S] ‘La Sr 98 68 63 44 34 33 27 24 17 17 18 31 43 51 58 64 69 74 77 80 BY a 'Te a 8BimTe a "Mo ™Te “Ba Sr 3.6 1.4 0.34 0.072 0.022 0.0078 0.00050 0.00044 0.00024 0.00016 66 92 98 99 100 100 100 100 100 100 BY a 'Te a BimTe a "Mo °™Te “Ba “Sr 1.9 1.0 0.19 0.040 0.015 0.012 0.00028 0.00025 0.00012 0.000081 55 89 95 99 99 100 100 100 100 100 1S] SIT 1S] 'STe 2] BimTe 'SmTe *°Mo MTC 2°Sb 4,200 1,700 1,300 220 47 36 4.0 1.0 0.54 0.11 56 78 96 99 99 100 100 100 100 100 59 92 98 99 100 100 100 100 100 100 66 18 16 14 il 75 6.8 5.1 3.0 2.2 Dose 1S] 380 SIT 230 1S] 36 '2Te 29 2] 4.5 BimTe 3.4 *°Mo 0.091 mTe 0.079 Ba 0.010 ‘Rh 0.0074 4.7 3.2 3.0 2.2 1.8 1.4 1.2 0.91 0.90 0.70 28 43 51 58 64 69 74 78 82 85 19 32 45 54 61 67 72 75 79 82 “Rank of | indicates radionuclide with highest organ dose; rank of 10 indicates radionuclide with tenth highest organ dose. > Cumulative % is cumulative percentage of total organ dose estimated from all 63 radionuclides considered in acute intake calculations. found for the Rongelap Island community. For example, for adults at the time of the test Bravo, the lifetime equivalent dose to RBM wasestimated to be 0.4 mSv, which represents about 2% of the total internal dose to RBM from acute intakes of other nuclides. For the other organs and tissues, the equivalent doses from acute intakes of *’'**°Pu represented less than 0.01% of the total internal doses to those organs and tissues from acute intakes. Doses from chronic intakes received during the lifetime of adults at the time of the test Bravo also have been estimated using (1) the concentrations of **°***°Pu in the top level of soil (0-5 cm) presented in Table 18, (2) a daily ingestion intake of soil of 500 mg (Sun et al. 1997), and (3) the committed dose coefficients recommended by ICRP (1990). Here again, the highest doses were those to RBM delivered to the Rongelap Island community. The equivalent dose thus obtained was 0.8 mSv, which represents about 3% of the total internal dose to RBM from chronic intakes. For the other organs andtissues,