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 |
ture of the Disposal Facility
VLL Concrete Waste in Flexible Containers (VLLW)
Overview of the Disposal Facility Before Installation of the VLLW
Installation of the VLLW
Overview of the Disposal Facility Covered with Soil (1997)
