Japan Power Demonstration Reactor nuclear power plant
Retired Japan
Gross capacity
13MW
Japan Power Demonstration Reactor nuclear power plant is a boiling water reactor unit at Japan Power Demonstration Reactor nuclear power plant in Japan rated at 13 MW gross. It is retired. Commercial operation began 15 Mar 1965.
Specification
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | BWR-1 |
| Size class | Large |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 13MW |
| Net capacity (reference) | 12MW |
| Net capacity (design) | 10MW |
| Thermal output | 90MWt |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Japan Power Demonstration Reactor nuclear power plant |
|---|---|
| Unit | not stated |
| Country | Japan |
| Owner | Japan Atomic Energy Agency100% |
| Operator | Japan Atomic Energy Agency |
| Coordinates | 36.4568, 140.6059approximate |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- Framatome BWR fuel assemblies
- Global Nuclear Fuel BWR fuel assemblies
- Westinghouse Electric Company BWR fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units —
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 1 Dec 1960Construction start
- 22 Aug 1963First criticality
- 26 Oct 1963Grid connection
- 15 Mar 1965Commercial operation
- 18 Mar 1976Permanent shutdown
Other BWR-1 units
2 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Garigliano nuclear power plant | Italy | Retired | 160 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-16
- GEM.wiki entry (further reading) — CC BY-SA 4.0 — linked, not quoted