Table 1. Assumed discharge from Fukushima Dai-ichi plant compared with the reference discharge from Chernobyl nuclear plant.
| Isotope | Estimated discharge from Fukushima Dai-ichi plant |
Reference discharge from Chernobyl nuclear plant | |
| Estimated by NISA | Estimated by NSC | ||
| Iodine-131 | 1.3×1017 Bq | 1.5×1017 Bq | 1.8×1018 Bq |
| Caesium-137 | 6.1×1015 Bq | 1.2×1016 Bq | 8.5×1016 Bq |
NISA, Nuclear and Industrial Safety Agency; NSC, Nuclear Safety Commission.
Reproduced with permission from www.nisa.meti.go.jp/english/files/en20110412-4.pdf