Fugen nuclear power plant
| Fugen nuclear power plant | ||
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| location | ||
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| Coordinates | 35 ° 45 '16 " N , 136 ° 0' 59" E | |
| Country: | Japan | |
| Data | ||
| Owner: | Japan Atomic Energy Agency | |
| Operator: | Japan Atomic Energy Agency | |
| Project start: | 1968 | |
| Commercial operation: | March 20, 1979 | |
| Shutdown: | March 29, 2003 | |
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Decommissioned reactors (gross): |
1 (165 MW) | |
| Energy fed in in 2003: | 345.5 GWh | |
| Energy fed in since commissioning: | 8448.9 GWh | |
| Website: | jnc.go.jp/04/fugen | |
| Was standing: | April 19, 2011 | |
| The data source of the respective entries can be found in the documentation . | ||
The decommissioned and dismantling nuclear power plant Fugen ( Japanese ふ げ ん Fugen , English Fugen Nuclear Power Station ) is located in the place Myōjin-chō near the city of Tsuruga in Fukui Prefecture . The Tsuruga nuclear power plant is located on the same property . The power plant was named after the Japanese name of the Bodhisattva Samantabhadra , a deity in Buddhism.
It was equipped with an Advanced Thermal Reactor (ATR) developed in Japan . The reactor used can use various fuels from natural uranium to mixed oxides (MOX). It was planned as part of the plutonium cycle. On 20 March 1978, equipped with MOX reactor was first critically .
Since it is a prototype, the owner is not an electricity company, but the Japan Nuclear Cycle Development Institute . Fugen was the first thermal neutron reactor that was operated entirely with MOX. As it was designed to use different fuels, it was also used to develop new fuel elements .
In 1995 the government decided not to build reactors of this type any more, as the costs were too high compared to light water reactors . In March 2003 it was shut down. The dismantling began in the following years.
For 25 years of operation, the Fugen Nuclear Power Station received the Historic Landmark Award from the American Nuclear Society (ANS).
Accidents
- 14.-16. April 1997: A tritium leak was reported to the responsible authorities 30 hours late. The subsequent investigation showed that there had already been eleven similar incidents. Five managers of the operator at the time (at the time: Reactor & Nuclear Fuel Development Corporation) had to vacate their posts.
- April 8, 2002: About 200 m³ of radioactive vapor escaped from a defective pipe. The reactor was shut down.
Dismantling
When the reactor was dismantled, there were surprises: In October 2006 it was discovered that the walls in an important building did not have the necessary resistance at 25 out of 34 points. It is an extension to the reactor, where the control room and the emergency cooling system are located. A resistance force of 22 Newtons is specified as the standard , at one point this was only 10 Newtons.
Reactor technology and operation
The Fugen nuclear power plant has one block . The reactor was the first in the world to run on MOX fuel . It had 772 fuel elements, making it the world's largest of its type. He used ordinary water in the steam cycle like a boiling water reactor (BWR), but heavy water as a moderator, like in a CANDU reactor . The electrical output was 165 MW, the thermal output 557 MW. The temperature in the fuel rods was 2200 ° C and in the reactor core 300 ° C. A change of fuel elements is required every six months.
The facility is located on a plot of 267,694 m², of which the buildings take up 7,762 m². The usable area is 46,488 m². The power plant employed 256 people.
| Reactor block | Reactor type | net power |
gross power |
start of building | Network synchronization |
Commercialization of essential operation |
switching off processing |
|---|---|---|---|---|---|---|---|
| Joints ATR | Advanced Thermal Reactor (Heavy-Water / Light-Water Reactor) |
148 MW | 165 MW | 05/10/1972 | 07/29/1978 | 03/20/1979 | 03/29/2003 |
See also
Web links
- List of incidents (English)
- Procedure for dismantling joints ( Memento from January 21, 2013 in the Internet Archive )
- Japan Nuclear Cycle Development Institute ( Memento from September 27, 2007 in the web archive archive.today ) (English, Japanese)
Individual evidence
- ↑ American Nuclear Society: Nuclear Historic Landmark Award (English)
- ^ Walls at old reactor found substandard . In: The Japan Times , February 11, 2007 (English)
- ↑ Brief description. (PDF; 575 kB; Japanese, translated by the author in the English language Wikipedia)
- ↑ Japan: Nuclear Power Reactors - Alphabetic . In: Power Reactor Information System of the IAEA (English)
