Calvert Cliffs Nuclear Power Plant
| Calvert Cliffs Nuclear Power Plant | ||
|---|---|---|
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| location | ||
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| Coordinates | 38 ° 26 '5 " N , 76 ° 26' 31" W | |
| Country: | United States | |
| Data | ||
| Owner: | Exelon generation | |
| Operator: | Exelon generation | |
| Project start: | 1967 | |
| Commercial operation: | May 8, 1975 | |
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Active reactors (gross): |
2 (1,829 MW) | |
| Energy fed in in 2006: | 13,856 GWh | |
| Energy fed in since commissioning: | 338,280 GWh | |
| Website: | The nuclear power plant on the side of the operator | |
| Was standing: | February 9, 2008 | |
| The data source of the respective entries can be found in the documentation . | ||
The Calvert Cliffs nuclear power plant ( English Calvert Cliffs Nuclear Power Plant , often abbreviated to CCNPP or CCNP ) is located on Chesapeake Bay in Lusby , Calvert County , Maryland in the United States . It consists of two pressurized water reactors and is the only nuclear power plant in Maryland. The power plant site is surrounded by a state park. The power plant occupies 380 hectares of its 2100 hectare site, the rest of which has been left in a natural state. It produces electricity for more than 400,000 households.
owner
The owner was the Constellation Energy Group, the operator the Calvert Cliffs Nuclear Power Plant Inc. After the takeover of Constellation by Exelon , the current operator is the Exelon Generation Co., LLC .
Reactors
There are 217 fuel assemblies with 176 fuel rods in each reactor. Each reactor has two reactor coolant pumps.
Calvert Cliffs-1 has a net electrical output of 873 MWe and a gross output of 918 MWe. Calvert Cliffs-2 has a net electrical output of 862 MWe and a gross output of 911 MWe.
construction
The architect, engineer and designer was the Bechtel Power Corp. The reactors come from Combustion Engineering . General Electric manufactured the turbine for the first block, Westinghouse Electric that for the second block. The construction of the power plant cost 750 million US dollars . The visitor center is located in an old tobacco barn from 1818 and offers exhibits on energy and nuclear power plants as well as a view of the nuclear power plant. Guided tours through the power plant can also be organized there.
business
Construction of both reactors began on July 7, 1969. The first unit became critical on October 7, 1974 , the second on November 30, 1976. Calvert Cliffs-1 was first synchronized with the power grid on January 3, 1975 and went live on November 8, 1976 May 1975 in commercial operation. Calvert Cliffs-2 was synchronized with the network on December 7, 1976 and began commercial power operation on April 1, 1977.
In 2000, the then US President George W. Bush extended the operating permit for both units by 20 years. Calvert Cliffs was the first nuclear power plant in the US to receive such an operational extension. This means that Calvert Cliffs-1 has an operating license until 2034, the second reactor block until 2036.
In 2000 the steam generators in both blocks were replaced.
Since the terrorist attacks of September 11, 2001 , the operator has undertaken to ensure better security measures in the power plant.
On July 31, 2007, Constellation Energy applied for permission to build a third EPR reactor on the same site, and on July 17, 2015, EDF subsidiary Unistar Nuclear Energy returned the combined construction and operation license (COL).
Accidents
On February 18, 2010, one of two electrical strings that connects the network with the two blocks on the power plant site failed. As a result, both blocks for switching off and removing the decay heat were no longer supplied with enough electricity. In Block 1, an emergency diesel generator started up and worked properly. The diesel planned for the second block failed after a shorter period of time. That already led to a very delicate situation: workers had to improvise transporting a mobile power source, which then provided the necessary power supply.
Hurricane Irene
As a result of Hurricane Irene, Unit 1 of the power plant was automatically shut down on August 28, 2011 after a flying aluminum cladding damaged a main transformer.
Operating license
In the USA, the Nuclear Regulatory Commission (NRC) grants an operating license for a nuclear power plant for a period of up to 40 years. The 40 year period was originally based on the fixed asset depreciation period . The Atomic Energy Act of 1954 allows the operating license to be extended (even several times) by 20 years at a time.
The original operating license for Unit 1 was issued on July 31, 1974 by the NRC. It was extended on March 23, 2000 to July 31, 2034. The original permit for Block 2 was granted on August 13, 1976. It was extended on March 23, 2000 to August 13, 2036.
Data of the reactor blocks
The Calvert Cliffs nuclear power plant has a total of two blocks :
| Reactor block | Reactor type | net power |
gross power |
start of building | Network synchronization |
Commercialization of essential operation |
operating permit |
switching off processing |
|---|---|---|---|---|---|---|---|---|
| Calvert Cliffs-1 | Pressurized water reactor | 873 MW | 918 MW | 07/07/1969 | 03/01/1975 | 05/08/1975 | 07/31/2034 | |
| Calvert Cliffs-2 | Pressurized water reactor | 862 MW | 911 MW | 07/07/1969 | December 07, 1976 | 04/01/1977 | 08/13/2036 |
Web links
See also
Individual evidence
- ↑ Calvert Cliffs Nuclear Power Plant (Maryland) - What does CCNPP stand for? (English)
- ↑ a b c The nuclear power plant on the operator's side ( memento of the original from January 5, 2010 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (English)
- ↑ a b Calvert Cliffs Nuclear Power Plant (English) ( Memento of the original from June 28, 2008 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ US Nuclear Plants - Calvert Cliffs, Maryland (English)
- ↑ A Sightseer's Guide to Engineering - Details for Calvert Cliffs Nuclear Power Plant (English)
- ↑ a b c d Power Reactor Information System of the IAEA : "United States of America: Nuclear Power Reactors - Alphabetic" (English)
- ↑ Our Locations - Nuclear Power Plants. Exelon, accessed August 18, 2016 .
- ↑ a b Nucleartourist - Calvert Cliffs Nuclear Power Plant (English)
- ↑ UniStar Nuclear Energy - Calvert Cliffs Unit 3 Safe and Secure (English)
- ↑ UniStar Nuclear Energy - Calvert Cliffs Unit 3 (English)
- ↑ http://www.world-nuclear-news.org/NN-Calvert-Cliffs-3-COL-withdrawn-2107157.html
- ↑ NRC: News Release - Region I - 2010-004 - NRC Sends Special Inspection Team to Calvert Cliffs (English, link no longer available December 1, 2011)
- ↑ http://www.stern.de/panorama/-liveticker-zu-hurrikan-irene-beschaedigter-atomreaktor-schaltet-sich-ab-1721145.html
- ^ Backgrounder on Reactor License Renewal. Nuclear Regulatory Commission (NRC), accessed August 18, 2016 .
- ^ Subsequent License Renewal Background. NRC, accessed August 18, 2016 .
- ↑ Calvert Cliffs Nuclear Power Plant, Unit 1. NRC, accessed on August 18, 2016 .
- ↑ Calvert Cliffs Nuclear Power Plant, Unit 2. NRC, accessed on August 18, 2016 (English).
