Table 12. The 30-, 50-, and 70-y integral effective dose for Rongelap Island residents fof diet when imported foodsare unavailable (TUA; i.e., only local foods.) ne Integral effective dose , Sv (rem) 30y Ny 70y 0.0024 (0.24) 0.0033 (0.33) 0.0039 (0.34) B37Cs 0.0081 (0.81) 0.011 (1.1) 0.013 (1.3) 239+240Py 241Am 5.1 x 10-5 (0.0051) 2.5 x 10-5 (0.0025) 1.3 x 10+ (0.013) 6.0 x 10-5 (0.0060) 23x 104 @.023) 1.0 x 10-4 (§.010) ‘External Internal Ingestion Sr 2.7 x 10+ (0.027) Inhalation 239+240Py 4.0x 10-4 (0.040) 2.9x 10-5 (0.0029) 241Am 7.0 x 10-5 (0.0070) 1.9 x 10-5 (0.0019) 4.5 x 10-5 (0.0045) Totala 0.011 (1.1) 0.015 (1.5) a The total dose may vary in the second decimal place due to rounding. 48x104 (0.048) 1.3 x 10-4 (@.013) 78x 10-5 (§.0078) 0.018 (1.8) Table 13. Comparison of the doses estimated in 1982 based on the 1978 NMIRSdata, to those in this report for the case of imported foods available. Previous Estimates (1998+) Current estimajes (1995) Maximum annual effective dose 0.37 mSv (37 mrem) 0.26 mSv (26 nrem) 30-y integral effective dose 0.0089 Sv (0.89 rem) 0.0059 Sv (0.$9 rem) 50-y integral effective dose 0.012 Sv (1.2 rem) 0.0082 Sv (0.42 rem) 70-y integral effective dose 0.013 Sv (1.3 rem) 0.0097 Sv (0.97 rem) 4 Doses are decay corrected to 1995 for comparison with the current dose estimates. United States is about 3 mSv y-! (300 mrem y-1); the breakdown by source is given in Table 14 uncertainty in the current estimatd of 2 mSv y—! (200 mrem y-1). background effective dose is 2.4 mSv y-! (240 mrem y-!) with some areas over 10 mSv y—! (1000 mrem y-!) (UNSCEAR, 1972, 1988). Note the major contribution is from radon; only in the last few years has the extent and magnitudeof this in the Marshall Islands concentration of the parent cause the jJadionuclide, (USAEC,1973), the concentration radon in the estimates determined. 1987), and the open, outdoor l#estyle in the (NCRP, 1987a).. The world-wide average source been addressed and average dose There is still some Exposure to radon is essentiallf insignificant Radium-226 (226Ra), in coral so# is very low air is very much lower than ovdr continental land masses, (Larson and Bressan, 1980; Robison, 31