North Anna Nuclear Power Plant

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North Anna Nuclear Power Plant
The North Anna Nuclear Power Plant
The North Anna Nuclear Power Plant
location
North Anna Nuclear Power Plant, Virginia
North Anna Nuclear Power Plant
Coordinates 38 ° 3 '36 "  N , 77 ° 47' 22"  W Coordinates: 38 ° 3 '36 "  N , 77 ° 47' 22"  W.
Country: United States
Data
Owner: Dominion Energy and ODEC
Operator: Dominion generation
Project start: 1967
Commercial operation: June 6, 1978

Active reactors (gross):

2 (1931 MW)

Construction discontinued (gross):

2 (1900 MW)
Energy fed in since commissioning: 333,645 GWh
Was standing: June 25, 2008
The data source of the respective entries can be found in the documentation .
f1

The North Anna Nuclear Power Plant is located near Mineral on 4.4 km² in Louisa County , Virginia in the United States . It consists of two power plant blocks with pressurized water reactors . The operator of the nuclear power plant is Dominion Energy . It is jointly owned by Dominion Virginia Power Corporation (88.4%) and the Old Dominion Electric Cooperative (11.6%). Dominion currently owns nuclear power plants in Virginia (North Anna, Surry ), Connecticut ( Millstone ), and Wisconsin ( Kewaunee , closed).

The reactors

The plant has two Westinghouse pressurized water reactors . Together, the reactors have an output of 1931 MW, the electricity generated is mainly used to supply the Greater Richmond and Northern Virginia regions .

Construction began on February 19, 1971 for both units. The first network synchronization of the first reactor unit was on April 17, 1978, and that of the second unit on August 25, 1980. The first unit went into commercial operation on June 6, 1978 second reactor on December 14, 1980.

Lake Anna was created in the North Anna River as a water reservoir to take cooling water for the reactors. North Anna is similar in design and appearance to the Surry nuclear power plant .

Construction of units 3 and 4 began on June 1 and December 1, 1971, respectively. Construction of both units was canceled on November 1, 1982.

power

The net output of the first reactor is 924  MWe , the gross output 973 MWe. The second block has a net output of 910 MWe and a gross output of 958 MWe.

Accidents

In August 2011, an unusual earthquake occurred along the northeast coast of the United States. The 5.8 Richter epicenter was in Virginia, the same state as the nuclear power plant. The quake led to the failure of the external power supply, which meant that both units had to be cooled down with the help of emergency diesel generators ( emergency power supply ). After just 40 minutes of running, one of the diesel engines failed due to damage to the radiator, which is why the electricity required to operate the pumps had to be supplied by another diesel unit, the so-called emergency diesel. The day after the earthquake, the power supply for residual heat removal could be restored, but the units remained switched off for longer.

In December 2016 it became known that North Anna was also affected by the Creusot Forge scandal over falsified certificates. Parts of the lids of both reactor pressure vessels come from the polluted Areva subsidiary.

New building project

Dominion wants to build an ESBWR from GE Hitachi, which is equipped with largely passive safety systems, as the new Block 3 of the plant .

Generation costs

The two nuclear power plants, North Anna and Surry, were the two with the lowest generation costs compared with 27 other nuclear power plants in the USA from 2010 to 2012. They are given as 16.05 USD per MWh for North Anna and 17.38 USD per MWh for Surry.

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 April 1, 1978 by the NRC. It was extended on March 20, 2003 to April 1, 2038. The original permit for Block 2 was granted on August 21, 1980. It was extended on March 20, 2003 to August 21, 2040.

According to world nuclear news , Dominion Energy Virginia informed the NRC in November 2017 that it was aiming for another operating permit for the two units in 2019. Submitting a letter of intent is a prerequisite for the NRC to plan its manpower requirements for the license renewal process.

Data of the reactor blocks

The North Anna 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
North Anna-1 Pressurized water reactor 903 MW 973 MW 19th February 1971 April 17, 1978 June 6, 1978 04/01/2038
North Anna-2 Pressurized water reactor 903 MW 958 MW 19th February 1971 August 25, 1980 December 14, 1980 08/21/2040
North Anna-3 Pressurized water reactor 907 MW 950 MW June 1, 1971 - - - Construction canceled on November 1st, 1982
North Anna-4 Pressurized water reactor 907 MW 950 MW 1st December 1971 - - - Construction canceled on November 1st, 1982

See also

Web links

Individual evidence

  1. North Anna Power Station ( Memento of the original from September 13, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.dom.com
  2. a b c Power Reactor Information System of the IAEA : "United States of America: Nuclear Power Reactors - Alphabetic" (English)
  3. ^ The Creation and History of Lake Anna
  4. North Anna 3 nuclear power plant in the IAEA's PRIS ( Memento from June 4, 2011 in the Internet Archive ) (English)
  5. North Anna 4 nuclear power plant in the IAEA's PRIS ( Memento from June 4, 2011 in the Internet Archive ) (English)
  6. ^ Message from the IAEA
  7. ^ North Anna, Surry Rated Lowest-Cost Nuclear Stations. Dominion Energy , February 18, 2015, accessed November 18, 2017 .
  8. ^ Backgrounder on Reactor License Renewal. Nuclear Regulatory Commission (NRC), accessed November 18, 2017 .
  9. ^ Subsequent License Renewal Background. NRC, accessed November 18, 2017 .
  10. ^ North Anna Power Station, Unit 1. NRC, accessed November 19, 2017 .
  11. ^ North Anna Power Station, Unit 2nd NRC, accessed November 19, 2017 .
  12. ^ Second license renewal for Virginia units. www.world-nuclear-news.org (WNN), November 14, 2017, accessed on November 18, 2017 (English).