Davis Besse Nuclear Power Plant
| Davis Besse Nuclear Power Plant | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 41 ° 35 ′ 49 " N , 83 ° 5 ′ 20" W | |
| Country: |
 United States
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| Data | ||
| Owner: | Nuclear GenCorp | |
| Operator: | Energy Harbor Corp. | |
| Project start: | 1968 | |
| Commercial operation: | July 31, 1978 | |
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Active reactors (gross): |
1 (925 MW) | |
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Planning set (gross): |
2 (1920 MW) | |
| Energy fed in in 2010: | 5,188,163 GWh | |
| Energy fed in since commissioning: | 167,839.9656 GWh | |
| Was standing: | June 9, 2011 | |
| The data source of the respective entries can be found in the documentation . | ||
The Davis Besse nuclear power plant ( English Davis Besse Nuclear Power Station ) with a pressurized water reactor is located in the US state of Ohio on the shores of Lake Erie near Oak Harbor .
history
Construction of the power plant began on March 24, 1971, and it went online on August 28, 1977. The power plant is operated by FirstEnergy Corp.
The reactor is a 925 megawatt pressurized water reactor from Babcock and Wilcox . From 2002 to the beginning of 2004, the plant was shut down in order to modernize it.
Accidents
On September 24, 1977, a pressure relief valve in the primary circuit opened, causing steam to escape. The control room staff could not bring the situation under control for a long time. There was a risk that the core of the reactor could have been exposed and overheated due to the heavy loss of coolant. Before that happened, the valve could be closed again. A few years later, the incident was assigned to Category 3 on the International Rating Scale for Nuclear Events .
On June 9, 1985, when the cooling system was put into operation, a pump malfunctioned because it was operating incorrectly by an operator. To counteract this, the delivery rate was reduced. Shortly afterwards there was overpressure on another pump. The operators switched off the pump. However, this stopped the circulation of the coolant flow. To counteract this, an operator activated the emergency feed water pumps. First the event was classified as "extraordinary"; Later the incident was examined more closely and it was found that it almost came to a core meltdown (melting of the reactor core). According to estimates by the IAEA , the incident on the INES was to be rated at least level 4, ie "accident".
In March 2002, during a delayed inspection, it was found that boric acid had leaked from the reactor near a control rod leadthrough on the cover of the reactor pressure vessel . The boric acid is used to control the reactor and is added to the coolant. However, the acid reacts very aggressively to heavy metals. As a result, there was severe corrosion on the reactor cover, so that only a few millimeters thin layer of the cover inner lining remained. Experts at Oak Ridge National Laboratory then calculated that, in the worst case, it would have taken another five months for a large leak to form in the reactor lid. The nuclear experts of the NGO Union of Concerned Scientists (UCS) combined this scenario with the problems that had been discovered a few years ago in connection with clogging of the bog sieves of some nuclear power plants. The loss of cooling water from this leak would have torn off insulating materials that would have clogged the emergency cooling pump screens. According to the UCS, the consequences would have been different than at the Three Mile Island nuclear power plant , where a core meltdown occurred in 1979. According to UCS, the containment (security building) could have failed, most likely after around two days when the corium melted through the building foundation. During this process, a great deal of carbon monoxide and hydrogen is released, which can explode when reacting with oxygen and damage the containment .
Term of the plant
The plant was originally intended to operate for 40 years, so it would have been shut down on April 22, 2017. On August 10, 2010, FirstEnergy submitted an application for a 20-year extension to the US nuclear regulatory agency . This was approved on December 8, 2015, and the nuclear power plant can be operated until April 22, 2037.
The future of the plant has been increasingly uncertain since the 2010s. By shale gas production and the expansion of renewable energy is in many electricity markets in the US is an oversupply of cheap electricity available, so more and more nuclear power plants are no longer competitive. A number of plants ( Crystal River , Kewaunee , San Onofre 2 and 3 , Vermont Yankee , Fort Calhoun ) have already been shut down for these reasons, other reactor units ( Pilgrim , Three Mile Island 1 , Oyster Creek , Indian Point 2 and 3 , Palisades , Diablo Canyon 1 and 2 ) are scheduled for shutdown, the premature shutdown of other systems ( Prairie Island , Duane Arnold ) is under discussion. New construction projects have been canceled; most recently, the construction of two blocks at the Virgil C. Summer nuclear power plant was canceled for economic reasons.
Due to this difficult market situation, FirstEnergy is campaigning intensively with the state governments of Ohio and Pennsylvania to subsidize its nuclear power plants. The systems are to be promoted with public money from budgets for the expansion of CO2- free energies based on the model of New York and Illinois . In these states, Exelon withdrew the announced decommissioning of a total of six reactors ( Quad Cities 1 and 2 , Clinton , Ginna , Nine Mile Point 1 , Fitzpatrick ) in 2016 after the respective governments agreed to subsidize the plants from funds for pollution-free energies . In October 2019, environmental initiatives in court achieved partial success in the fight against this subsidization. At times (as of February 2018), FirstEnergy's campaigns have not been successful in either of the two states. For months, the company has been announcing that it will sell or shut down its nuclear power plants, which include Davis Besse, Beaver Valley 1 and 2 and Perry , unless the situation changes soon. In January 2018, it was announced that FirstEnergy had agreed to finance a hedge fund of USD 2.5 billion for the next 18 months due to the financial inclination.
According to media reports, a decision by FirstEnergy on the future of its nuclear power plants is imminent. As the CFO of FirstEnergy announced on January 25, 2018, Davis Besse is already scheduled for early shutdown. In March 2018, the operator informed the US Atomic Energy Agency that the power plant should be shut down in 2020.
On April 25, 2018, FirstEnergy announced that the nuclear regulatory authority had been informed of May 31, 2020 as the shutdown date.
Data of the reactor blocks
The nuclear power plant has a Davis Besse in operation block and two warped blocks:
| Reactor block | Reactor type | net power |
gross power |
start of building | Network synchronization |
Commercialization of essential operation |
Shutdown |
|---|---|---|---|---|---|---|---|
| Davis Besse-1 | Pressurized water reactor | 891 MW | 925 MW | March 24, 1971 | 08/28/1977 | 07/31/1978 | (Planned 05/31/2020) |
| Davis Besse-2 | Pressurized water reactor | 910 MW | 960 MW | Project abandoned on 01/01/1980 | |||
| Davis Besse-3 | Pressurized water reactor | 910 MW | 960 MW | Project abandoned on 01/01/1980 |
Individual evidence
- ↑ Lisbeth Gronlund, David Lochbaum, Edwin Lyman: Nuclear power in a warming world. (PDF) In: Union of Concerned Scientists. P. 17 , accessed April 12, 2020 .
- ↑ UNITED STATES NUCLEAR REGULATORY COMMISSION DOCKET NO. 50-346 DAVIS-BESSE NUCLEAR POWER STATION, UNIT NO. 1 RENEWED FACILITY OPERATING LICENSE. (PDF) In: nrc.gov. Retrieved April 12, 2020 .
- ↑ Tom Jackson: Group opposing Davis-Besse aid wins court ruling. In: sanduskyregister.com. October 14, 2019, accessed April 12, 2020 .
- ^ Associated Press: FirstEnergy Says Ohio, PA Nuclear Plants in Danger of Closing. In: power-eng.com. January 26, 2018, accessed April 12, 2020 .
- ↑ Lake county commissioners air disagreements over resolution to support perry nuclear power plant. In: news-herald.com. February 1, 2018, accessed February 1, 2018 .
- ↑ TOM HENRY: First Energy executive: Davis-Besse plant headed for premature closure. In: toledoblade.com. January 25, 2018, accessed April 12, 2020 .
- ^ Davis-Besse Nuclear Power Station to close in 2020. In: The Morning Journal News. March 28, 2018, accessed March 29, 2018 .
- ↑ First Energy Solutions definitely to close its nuclear power plants. In: Cleveland.com. April 25, 2018. Retrieved April 25, 2018 .
- ↑ Power Reactor Information System of the IAEA : "Reactor Davis Besse-1" (English)
- ^ Reactor Davis Besse 2 in the PRIS of the IAEA ( Memento from June 4, 2011 in the Internet Archive ) (English)
- ^ Reactor Davis Besse 3 in the PRIS of the IAEA ( Memento from June 4, 2011 in the Internet Archive ) (English)
See also
- Commons : Davis-Besse Nuclear Power Station - collection of pictures, videos and audio files
- List of nuclear power plants
- List of nuclear power plants
Web links
- Davis-Besse 1 (English)