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| Fugen Nuclear Power Plant | |
|---|---|
 The Fugen NPP in 1975, Image:Japan Ministry of Land, Infrastructure and Transport | |
 | |
| Country | Japan |
| Coordinates | 35°45′16″N136°00′59″E / 35.75444°N 136.01639°E /35.75444; 136.01639 |
| Status | Decommissioned |
| Construction began | May 10, 1972 (1972-05-10) |
| Commission date | March 20, 1979 (1979-03-20) |
| Decommission date | March 29, 2003 (2003-03-29) |
| Operator | Japan Atomic Energy Agency |
| Nuclear power station | |
| Reactor type | HWLWR |
| Power generation | |
| Units decommissioned | 1 x 165 MW |
| Nameplate capacity | 165MW |
| Capacity factor | 23.9% |
| Annual net output | 345GW·h |
| External links | |
| Website | www |
| Commons | Related media on Commons |
Fugen ふげん (Fugen) was a prototype Japanese nuclear test reactor.Fugen was a domestic Japanese design for a demonstrationAdvanced Thermal Reactor. It was aheavy water moderated, boiling light water cooled reactor.[1]The reactor was started in 1979 and shut down in 2003. As of 2018, it is undergoingdecommissioning.[1]It is located in Myōjin-chō, in the city ofTsuruga, Fukui. The name "Fugen" is derived fromFugen Bosatsu (Samantabhadra), aBuddhist deity.
The reactor was the first in the world to use a fullMOX fuel core. It had 772 assemblies, the most in the world. It has received the title of ahistoric landmark from theAmerican Nuclear Society.
The design boils ordinary water like aboiling water reactor (BWR) but uses heavy water as a moderator as in aCANDU reactor. The electrical output was 165 MW and the thermal output was 557 MW.
The plant is located on a site that covers 267,694 m2 (66 acres); buildings occupy 7,762 m2 (1.9 acres), and it has 46,488 m2 of floor space. It employed 256 workers.[2]
During dismantling operations it was found that walls with controls did not have the necessary strength at 25 of 34 points.
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