Demonstration Test of VLL Concrete Waste Disposal
◎ Institutional Control Period
Phase 1 (1995–1997)*
- Establishment of monitoring and control areas
- Monitoring of the groundwater level and the radioactive concentration of the groundwater
Phase 2 (1997–2025)
- ・Establishment of the preservation area
- ・Inspection of the preservation area
- ・Restriction of specific human acts (e.g., digging, farming, and living) in the preservation area
- ・Measurement of the radioactive concentration of the environmental groundwater/soil in case of necessary
Outline of the disposed Wastes
VLL concrete waste arising from decommissioning of JPDR: approximately 1,670 ton・Activated concrete: 1,310 ton
・Surface contaminated concrete: 360 ton
Nuclide | Limits Permitted by The Science and Technology Agency [Bq/t] | imits specified by Cabinet Order* [Bq/t] |
3H | 1.1×106 | 3.0×109 |
14C | 2.0×104 | 1.1×108 |
41Ca | 4.8×103 | 1.5×108 |
60Co | 1.6×105 | 8.1×109 |
63Ni | 3.0×104 | 7.2×109 |
90Sr | 2.0×104 | 4.7×106 |
137Cs | 1.0×104 | 1.0×108 |
152Eu | 1.1×105 | 3.6×108 |
Alpha | 6.4×102 | 1.7×107 |