Table 3 Unmitigated 50 y effective dose per unit 137Cs deposition, E (mSv/(MBq m−2 137Cs) from residential garden surfaces for three types of soil migration settings (see Table 2), to residents in wooden or brick houses in the modeled urban area (excluding short-lived fission products) and the corresponding averted dose (integrated over 50 y) after a combination of evacuation prior to resettlement at time tcleanup = 1 y and subsequent 5 cm topsoil removal from an NPP release with 134Cs/137Cs ratios of 0.56, 1, and 1.47. NC = Not computed.
JAPAN_01 | SWEDEN_01 | SWEDEN_02 | |||||||
|---|---|---|---|---|---|---|---|---|---|
134Cs/137Cs-ratio | |||||||||
0.56 | 1 | 1.47 | 0.56 | 1 | 1.47 | 0.56 | 1 | 1.47 | |
Unmitigated dose, (mSv/(MBq m-2) | |||||||||
Indoor wooden house | 65.9 | 67.9 | 79.0 | 58.9 | 71.3 | 86.2 | 34.2 | 36.5 | 43.9 |
Indoor brick house* | 33.2 | 34.2 | 39.8 | 29.6 | 35.9 | 43.4 | 17.2 | 18.4 | 22.1 |
Free surface | 238.2 | 277.1 | 318.6 | 244.5 | 289.2 | 337.0 | 133.3 | 161.7 | 192.0 |
Unmitigated dose (1 y resettlement, no topsoil removal), (mSv/(MBq m-2) | |||||||||
Indoor wooden house | 47.6 | 53.4 | 60.6 | 47.0 | 54.1 | 63.3 | 21.6 | 24.8 | 29.1 |
Indoor brick house* | 24.0 | 26.9 | 30.5 | 23.7 | 27.2 | 31.8 | 10.9 | 12.5 | 14.6 |
Free surface | 206.1 | 236.3 | 256.6 | 207.9 | 236.3 | 266.7 | 106.3 | 122.5 | 139.8 |
Free surface | |||||||||
Averted dose (5 cm topsoil removal upon resettlement), (mSv/(MBq m-2) | |||||||||
Indoor wooden house | 47.6 | 53.4 | 60.6 | 47.0 | 54.1 | 63.3 | 21.2 | 24.1 | 28.3 |
Indoor brick house | 24.0 | 26.9 | 30.5 | 23.7 | 27.2 | 31.8 | 10.7 | 12.1 | 14.2 |
Free surface | NC | 207.9 | 236.2 | 266.3 | NC | ||||
