goingcritical:jpdrJapan · Power reactor
Japan Power Demonstration Reactor (JPDR)
Status: Shut down reached first criticality August 22, 1963 Reactor status full glossary → Announced Publicly announced — a site and design are proposed, but construction has not begun. Site preparation Early site and civil works are under way; the first safety-related ("nuclear") concrete has not yet been poured. Under construction Formal construction has begun, marked by the first nuclear concrete. Fuel loaded Nuclear fuel has been loaded into the core. The reactor is fuelled but has not yet gone critical. Critical Has reached first criticality — a self-sustaining chain reaction, usually at low power — but is not yet connected to the grid. Grid connected Synchronised to the electrical grid and exporting power for the first time, but still in commissioning and power-ascension testing — not yet in commercial service. In commercial operation — the operator has formally declared the unit in regular commercial service. Shut down Permanently shut down and no longer generating; may be defuelled, undergoing decommissioning, or preserved in place. Canceled Abandoned before completion.
Site: Tokai, Ibaraki
The first reactor to generate electricity in Japan (26 October 1963). A small GE-supplied BWR demonstration unit operated by the Japan Atomic Energy Research Institute at Tokai; after shutdown in 1976 it became Japan's decommissioning technology test bed, fully dismantled by 1996.
Details
| Design | GE BWR-1 (boiling water reactor) |
| Electrical output | 12 MWe |
Milestone history
- Announced —
- Construction start December 1, 1960
- Fuel load —
- First criticality August 22, 1963
- Grid connection October 26, 1963
- Commercial operation March 15, 1965