Nine Mile Point Nuclear Generating Station
Far shot of Nine Mile Point Nuclear Generating Station (two containment buildings on right and cooling tower), the FitzPatrick Plant is on the left.
CountryUnited States
LocationScriba, Oswego County, New York; near Oswego, New York
Coordinates43°31′15″N 76°24′25″W / 43.52083°N 76.40694°W / 43.52083; -76.40694
StatusOperational
Construction beganUnit 1: April 12, 1965
Unit 2: August 1, 1975
Commission dateUnit 1: December 1, 1969
Unit 2: March 11, 1988
Construction costUnit 1: $804.7 million (2007 USD)
Unit 2: $8.529 billion (2007 USD)[1]
Owner(s)Constellation Energy, Long Island Power Authority
Operator(s)Constellation Energy
Nuclear power station
Reactor typeBWR
Reactor supplierGeneral Electric
Cooling towers1 × Natural Draft (Unit 2)
Cooling sourceLake Ontario
Thermal capacity1 × 1850 MWth
1 × 3988 MWth
Power generation
Units operational1 × 644 MW
1 × 1375 MW
Make and modelUnit 1: BWR-2 (Mark 1)
Unit 2: BWR-5 (Mark 2)
Units cancelled1 × 1600 MW US EPR
Nameplate capacity2019 MW
Capacity factor96.69% (2017)
78.9% (lifetime)
Annual net output16,206 GWh (2021)
External links
WebsiteNine Mile Point
CommonsRelated media on Commons

Nine Mile Point Nuclear Station is a nuclear power plant with two nuclear reactors located in the town of Scriba, approximately five miles northeast of Oswego, New York, on the shore of Lake Ontario. The 900-acre (360 ha) site is also occupied by the James A. FitzPatrick Nuclear Power Plant.

In April 2011, Exelon of Chicago announced its intention to purchase Constellation Energy, the owner and operator of Nine Mile Point Nuclear Station. The acquisition was approved by FERC and the companies officially combined on March 12, 2012, with Constellation Energy taking the Exelon name. Exelon separated its generating assets back into Constellation Energy in 2022. Constellation owns Unit 1 and holds (82%) of Unit 2 while Long Island Power Authority holds (18%). Constellation Energy is the sole operator of both Units 1 & 2. Both units are boiling water reactors (BWRs).

Units 1 and 2

Unit 1 of Nine Mile Point Nuclear Generating Station c. 1969

Both units are General Electric boiling water reactors (BWR). Unit 1, a BWR-2 (Generation 2), went online in 1969 and has a rated capacity of 644 megawatts (864,000 hp). It is the oldest operating commercial nuclear reactor still in service in the United States.[2] Unit 2, a BWR-5, has been in operation since 1988 and has a rated capacity of 1,375 MW. Construction of both units, along with neighboring Fitzpatrick, was commissioned by Niagara Mohawk Power Corporation. Fitzpatrick was sold immediately upon completion, while Niagara Mohawk retained its share of the Nine Mile Point units until 2001, when it sold them to Constellation.[3]

On October 31, 2006, Constellation announced that the NRC had granted 20-year license extensions to both units. Unit 1 is now licensed to operate until 2029 and Unit 2 is licensed until 2046.

The Nine Mile Point 2 cooling tower is 543 feet tall and is visible from Chimney Bluffs in Sodus, New York nearly 30 miles away. Nine Mile Point 1 draws cooling water from Lake Ontario, and does not have a cooling tower.

In early May 2011, the plant operator reported that the plant fuel supplier, General Electric, notified the operator that mathematical errors could've resulted in the reactor's fuel getting hotter than expected.[4]

In 2016, Governor of New York Andrew Cuomo directed the Public Service Commission to consider ratepayer-financed subsidies similar to those for renewable sources to keep nuclear power stations profitable in the competition against natural gas. Indian Point would not be included in the scheme.[5][6]

Withdrawn unit 3 proposal

Unistar Nuclear, a joint venture between Constellation Energy and Électricité de France (EDF), announced in late 2008 that it had notified the U.S. Nuclear Regulatory Commission (NRC) of its plan to submit a combined construction and operating license (COL) application for a European Pressurized Reactor (EPR) at Constellation Energy's Nine Mile Point site.[7] Less than a year later however, Unistar requested a temporary suspension of the application review, and in 2013, citing a lack of federal loan guarantees, withdrew the application completely.[8]

Electricity Production

Generation (MWh) of Nine Mile Point Nuclear Generating Station[9]
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual (Total)
2001 1,309,751 1,082,371 996,634 792,703 839,639 1,213,015 1,042,234 1,165,283 1,233,386 1,197,046 1,259,445 1,098,455 13,229,962
2002 1,301,564 1,183,386 857,629 772,513 1,226,472 1,250,520 1,272,099 1,255,248 1,243,747 1,260,796 888,453 730,464 13,242,891
2003 1,318,106 1,086,660 1,037,882 838,868 1,219,947 1,226,521 1,068,496 1,016,544 1,244,842 1,288,636 1,221,228 1,298,812 13,866,542
2004 1,132,313 1,174,594 791,970 495,639 1,249,267 1,236,082 1,282,314 1,248,743 1,163,039 1,268,515 1,271,877 1,287,183 13,601,536
2005 1,317,483 1,188,926 1,101,125 826,387 1,214,595 1,232,033 1,264,159 1,237,864 1,235,761 1,303,254 1,271,780 1,314,381 14,507,748
2006 1,311,929 1,157,117 845,319 884,828 1,305,932 1,181,231 1,278,746 1,279,037 1,253,733 1,302,056 1,268,169 1,316,237 14,384,334
2007 1,317,419 1,153,677 826,238 1,032,859 1,218,774 1,246,426 1,276,739 1,244,518 1,208,667 1,291,728 847,849 1,299,130 13,964,024
2008 1,316,569 1,225,699 1,037,712 787,827 1,297,804 1,237,640 1,268,441 1,279,355 1,243,369 1,232,911 1,150,627 1,309,769 14,387,723
2009 1,316,673 1,169,505 1,129,488 1,083,746 1,309,346 1,255,222 1,286,215 1,277,742 1,249,653 1,253,744 1,268,150 1,315,012 14,914,496
2010 1,185,280 1,167,767 1,312,218 494,373 1,189,133 1,243,776 1,279,385 1,285,670 1,249,015 1,298,050 1,214,643 1,319,743 14,239,053
2011 1,310,649 1,178,658 1,120,852 941,175 1,048,935 1,258,797 1,275,745 1,093,570 1,247,499 1,305,602 1,272,676 1,101,461 14,155,619
2012 1,316,184 1,130,245 1,304,973 658,199 461,139 881,195 1,154,809 1,387,521 1,275,120 1,351,902 961,481 1,282,495 13,165,263
2013 1,435,237 1,289,866 1,433,301 1,131,870 1,163,963 1,368,731 1,344,741 1,396,820 1,358,815 1,415,931 1,327,719 1,179,339 15,846,333
2014 1,415,857 1,288,293 959,694 486,946 1,360,306 1,344,023 1,402,344 1,398,963 1,347,028 1,420,433 1,386,105 1,429,188 15,239,180
2015 1,432,717 1,123,379 1,166,683 1,194,851 1,410,404 1,366,225 1,396,404 1,387,647 1,284,343 1,427,155 1,386,181 1,422,087 15,998,076
2016 1,434,258 1,339,141 1,426,035 754,831 1,245,904 1,362,014 1,390,660 1,388,618 1,356,487 1,410,925 1,152,424 1,239,075 15,500,372
2017 1,387,866 1,212,679 1,171,443 1,296,298 1,419,287 1,361,709 1,365,672 1,269,240 1,313,158 1,408,117 1,361,625 1,425,786 15,992,880
2018 1,425,422 1,284,109 1,364,805 888,698 900,404 1,290,409 1,386,302 1,295,057 1,345,935 1,407,026 1,374,831 1,419,832 15,382,830
2019 1,423,364 1,257,891 1,149,066 926,790 1,328,362 1,364,304 1,388,799 1,388,538 1,436,064 1,370,496 1,368,169 1,419,533 15,821,376
2020 1,428,083 1,283,107 567,783 1,223,820 1,423,323 1,361,161 1,383,881 1,384,509 1,356,053 1,415,070 1,382,224 1,431,594 15,640,608
2021 1,433,988 1,274,512 1,256,094 1,201,383 1,411,935 1,352,044 1,393,758 1,373,978 1,353,074 1,387,225 1,354,343 1,414,058 16,206,392
2022 1,410,894 1,186,409 701,970 1,224,682 1,399,041 1,345,947 1,375,176 1,367,515 951,058 1,406,944 1,370,138 1,421,057 15,790,831
2023 1,404,444 1,233,276 1,081,005 1,044,150 1,402,944 1,348,818

Surrounding population

The Nuclear Regulatory Commission defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of 10 miles (16 km), concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about 50 miles (80 km), concerned primarily with ingestion of food and liquid contaminated by radioactivity.[10]

The 2010 U.S. population within 10 miles (16 km) of Nine Mile Point was 35,632, an increase of 17.0 percent in a decade, according to an analysis of U.S. Census data for msnbc.com. The 2010 U.S. population within 50 miles (80 km) was 909,523, an increase of 3.2 percent since 2000. Cities within 50 miles include Syracuse (36 miles to city center).[11]

1991 site area emergency

On August 13, 1991, a "site area emergency" was declared at the plant. According to Time magazine, this was the third occasion an SAE had been declared at a US nuclear plant.[12]

The emergency was due to an electrical fault which caused a momentary loss of electrical power to the reactor and control room. The operators shut down the reactor in accordance with the emergency plan requirements. There were no injuries or release of radiation as a result of the incident.[13] The reactor left emergency procedures about 13 hours after initiation.

From NRC Information Notice 91-64, Supplement 1:

The facility was operating at full power when a phase-to-ground electrical fault occurred on phase B of the Unit 2 main power transformer. This resulted in a trip of the main generator, main turbine, and reactor. The fault also caused the voltage on electrical distribution phase B buses to drop to about half of its nominal value for approximately 200 milliseconds, after which it returned to normal.
This momentary voltage drop resulted in the simultaneous loss of power output from each of the five Non-Class 1E uninterruptible power supplies. Exide's UPS units have internal continuously charged back-up batteries to prevent a loss of control logic power. Exide's UPS control logic circuitry receives, processes, generates, and sends electrical signals essential for proper UPS operation. However, in this incident the back-up power battery packs were apparently past their useful life and were completely discharged.
The loss of power from the UPS units caused a loss of all the following: the control room annunciators, the safety parameter display system computer, control rod position indication, the plant process computer, the core thermal limits computer, the feedwater control system, some of the lighting for the plant, the plant radio and paging systems, some instrumentation for balance-of-plant systems, and some instrument recorders.
The loss of control room annunciators concurrent with the plant transient resulting from automatic tripping of the main generator, main turbine, and reactor caused the licensee (Niagara Mohawk) to declare a site area emergency in accordance with the site emergency plan. The loss of control rod position indicators and other equipment losses burdened the operators in implementing the emergency procedures. However, the operators shut down the plant in accordance with emergency procedures. About 13 hours after the plant trip, the reactor was placed in a cold shutdown condition; and approximately 1 hour later, the licensee ended the site area emergency.

Seismic risk

The Nuclear Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at Nine Mile Point was Reactor 1: 1 in 238,095; Reactor 2: 1 in 178,571, according to an NRC study published in August 2010.[14][15]

See also

Notes

  1. ↑ "EIA - State Nuclear Profiles". www.eia.gov. Archived from the original on 4 October 2017. Retrieved 3 October 2017.
  2. ↑ "How old are U.S. Nuclear power plants, and when was the newest one built? - FAQ - U.S. Energy Information Administration (EIA)". Archived from the original on 2020-03-26. Retrieved 2013-09-20.
  3. ↑ "Constellation acquires Nine Mile Point". Nuclear Engineering International. 29 December 2001. Retrieved August 21, 2021.
  4. ↑ Wald, Matthew L. (May 11, 2011). "Nuclear Problems in the Rearview Mirror". The New York Times. Archived from the original on May 13, 2011. Retrieved May 13, 2011.
  5. ↑ Yee, Vivian (July 20, 2016). "Nuclear Subsidies Are Key Part of New York's Clean-Energy Plan". The New York Times. Archived from the original on October 20, 2019. Retrieved March 3, 2017.
  6. ↑ "NYSDPS-DMM: Matter Master". Archived from the original on 2019-09-03. Retrieved 2016-07-21.
  7. ↑ "Nine Mile Point COL lodged". World Nuclear News. 2 October 2008. Archived from the original on 3 October 2008. Retrieved 8 October 2008.
  8. ↑ "Effort to build new Lake Ontario nuke plant halted". The Wall Street Journal. Associated Press. 6 December 2013. Archived from the original on 6 December 2013. Retrieved 6 December 2013.
  9. ↑ "Electricity Data Browser". www.eia.gov. Retrieved 2023-09-14.
  10. ↑ "NRC: Emergency Planning Zones". United States Nuclear Regulatory Commission. Archived from the original on 2019-12-22. Retrieved 2019-12-22.
  11. ↑ Bill Dedman, Nuclear neighbors: Population rises near US reactors, NBC News, April 14, 2011 http://www.nbcnews.com/id/42555888 Archived 2020-04-04 at the Wayback Machine Accessed May 1, 2011.
  12. ↑ "American Notes Nuclear Power". Time. August 26, 1991. Archived from the original on February 4, 2013. Retrieved 2008-10-08.
  13. ↑ "NRC Information Notice 91-64, Supplement 1". Archived from the original on 2016-08-18. Retrieved 2017-06-25.
  14. ↑ Bill Dedman, "What are the odds? US nuke plants ranked by quake risk," NBC News, March 17, 2011 http://www.nbcnews.com/id/42103936 Archived 2020-04-04 at the Wayback Machine Accessed April 19, 2011.
  15. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2017-05-25. Retrieved 2011-04-19.{{cite web}}: CS1 maint: archived copy as title (link)
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