Nine Mile Point Nuclear Generating Station
Encyclopedia
Nine Mile Point Nuclear Station is a two-unit nuclear power plant
located in the Town of Scriba
, approximately five miles northeast of Oswego, New York
, on the shore of Lake Ontario
. The 900 acre (3.6 km²) site is also occupied by the Fitzpatrick Nuclear Generating Station
.
Nine Mile Point is operated by Constellation Energy Group
. Constellation is also the sole owner of Unit 1, and owns 82% of Unit 2 (Long Island Power Authority
owns the remaining 18%).
boiling water reactor
s. Unit 1, a BWR-2, went online in 1969 and has a rated capacity of 609 MW. It is one of the two oldest nuclear reactors still in service in the United States; New Jersey
's Oyster Creek Nuclear Generating Station
is the other. Unit 2, a BWR-5, has been in operation since 1988 and has a rated capacity of 1,148 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.
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 cooling tower
is visible from Chimney Bluffs in Sodus, New York nearly 30 miles away.
In early May 2011, the operator of the plant reported that its fuel supplier, General Electric, notified it that mathematical errors were made which could resulted in reactor fuel’s getting hotter than operator thought.
and Électricité de France
(EdF) announced it had notified the U.S. Nuclear Regulatory Commission
(NRC) of its plan to submit a combined construction and operating licence (COL) application in late 2008 for an advanced-design U.S. Evolutionary Power Reactor (U.S. EPR) at Constellation Energy's Nine Mile Point site.
The design is a Generation III+
, four-loop pressurized water reactor
. The U.S. EPR will be rated at 4,590 MW thermal/1,710 MW electrical gross. Plant loads will be approximately 110 MWe, thus the net generation is 1600 MWe net. Plant thermal efficiency will be approximately 36% (ratio of 1,710 MWe to 4,590 MWth).
The COLA was filed on October 1, 2008; the review process is expected to take between 36 and 42 months.
Unistar noted that it has yet to make a final decision to build the plant.
defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of 10 miles (16.1 km), concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about 50 miles (80.5 km), concerned primarily with ingestion of food and liquid contaminated by radioactivity.
The 2010 U.S. population within 10 miles (16.1 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 (80.5 km) was 909,523, an increase of 3.2 percent since 2000. Cities within 50 miles include Syracuse (36 miles to city center).
magazine, this was the third occasion an SAE had been declared at a US nuclear plant.
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. The reactor came back online 13 hours after the incident.
From NRC Information Notice 91-64, Supplement 1:
Nuclear power plant
A nuclear power plant is a thermal power station in which the heat source is one or more nuclear reactors. As in a conventional thermal power station the heat is used to generate steam which drives a steam turbine connected to a generator which produces electricity.Nuclear power plants are usually...
located in the Town of Scriba
Scriba, New York
Scriba is a town in Oswego County, New York, United States. The population was 7,331 at the 2000 census. The town is named after landowner George Scriba.The Town of Scriba is east of the City of Oswego...
, approximately five miles northeast of Oswego, New York
Oswego, New York
Oswego is a city in Oswego County, New York, United States. The population was 18,142 at the 2010 census. Oswego is located on Lake Ontario in north-central New York and promotes itself as "The Port City of Central New York"...
, on the shore of Lake Ontario
Lake Ontario
Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north and southwest by the Canadian province of Ontario, and on the south by the American state of New York. Ontario, Canada's most populous province, was named for the lake. In the Wyandot language, ontarío means...
. The 900 acre (3.6 km²) site is also occupied by the Fitzpatrick Nuclear Generating Station
Fitzpatrick Nuclear Generating Station
The James A. FitzPatrick Nuclear Power Plant is located in the Town of Scriba, near Oswego, New York, on the southeast shore of Lake Ontario. The nuclear power plant has one General Electric boiling water reactor...
.
Nine Mile Point is operated by Constellation Energy Group
Constellation Energy
Constellation Energy, headquartered in Baltimore, Maryland, is an energy producer, trader, and distributor. The company operates over 35 power plants in 11 states under its operating company Constellation Commodities Group and/or Constellation Generation Group...
. Constellation is also the sole owner of Unit 1, and owns 82% of Unit 2 (Long Island Power Authority
Long Island Power Authority
The Long Island Power Authority or LIPA [ "lie-pah" ], a municipal subdivision of the State of New York, was created under the Long Island Power Act of 1985 to acquire the Long Island Lighting Company 's assets and securities...
owns the remaining 18%).
Units 1 and 2
Both units are General ElectricGeneral Electric
General Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...
boiling water reactor
Boiling water reactor
The boiling water reactor is a type of light water nuclear reactor used for the generation of electrical power. It is the second most common type of electricity-generating nuclear reactor after the pressurized water reactor , also a type of light water nuclear reactor...
s. Unit 1, a BWR-2, went online in 1969 and has a rated capacity of 609 MW. It is one of the two oldest nuclear reactors still in service in the United States; New Jersey
New Jersey
New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...
's Oyster Creek Nuclear Generating Station
Oyster Creek Nuclear Generating Station
Oyster Creek nuclear power station is a single unit 636 MWe boiling water reactor power plant located on an 800 acre site adjacent to the Oyster Creek in the Forked River section of Lacey Township in Ocean County, New Jersey. The facility is currently owned and operated by Exelon Corporation and...
is the other. Unit 2, a BWR-5, has been in operation since 1988 and has a rated capacity of 1,148 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.
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 cooling tower
Cooling tower
Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature or in the case of closed circuit dry cooling towers rely...
is visible from Chimney Bluffs in Sodus, New York nearly 30 miles away.
In early May 2011, the operator of the plant reported that its fuel supplier, General Electric, notified it that mathematical errors were made which could resulted in reactor fuel’s getting hotter than operator thought.
Unit 3
On February 12, 2008, Unistar Nuclear, a joint venture between Constellation EnergyConstellation Energy
Constellation Energy, headquartered in Baltimore, Maryland, is an energy producer, trader, and distributor. The company operates over 35 power plants in 11 states under its operating company Constellation Commodities Group and/or Constellation Generation Group...
and Électricité de France
Électricité de France
Électricité de France S.A. is the second largest French utility company. Headquartered in Paris, France, with €65.2 billion in revenues in 2010, EDF operates a diverse portfolio of 120,000+ megawatts of generation capacity in Europe, Latin America, Asia, the Middle East and Africa.EDF is one of...
(EdF) announced it had notified the U.S. Nuclear Regulatory Commission
Nuclear Regulatory Commission
The Nuclear Regulatory Commission is an independent agency of the United States government that was established by the Energy Reorganization Act of 1974 from the United States Atomic Energy Commission, and was first opened January 19, 1975...
(NRC) of its plan to submit a combined construction and operating licence (COL) application in late 2008 for an advanced-design U.S. Evolutionary Power Reactor (U.S. EPR) at Constellation Energy's Nine Mile Point site.
The design is a Generation III+
Generation III reactor
A generation III reactor is a development of any of the generation II nuclear reactor designs incorporating evolutionary improvements in design developed during the lifetime of the generation II reactor designs...
, four-loop pressurized water reactor
Pressurized water reactor
Pressurized water reactors constitute a large majority of all western nuclear power plants and are one of three types of light water reactor , the other types being boiling water reactors and supercritical water reactors...
. The U.S. EPR will be rated at 4,590 MW thermal/1,710 MW electrical gross. Plant loads will be approximately 110 MWe, thus the net generation is 1600 MWe net. Plant thermal efficiency will be approximately 36% (ratio of 1,710 MWe to 4,590 MWth).
The COLA was filed on October 1, 2008; the review process is expected to take between 36 and 42 months.
Unistar noted that it has yet to make a final decision to build the plant.
Surrounding population
The Nuclear Regulatory CommissionNuclear Regulatory Commission
The Nuclear Regulatory Commission is an independent agency of the United States government that was established by the Energy Reorganization Act of 1974 from the United States Atomic Energy Commission, and was first opened January 19, 1975...
defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of 10 miles (16.1 km), concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about 50 miles (80.5 km), concerned primarily with ingestion of food and liquid contaminated by radioactivity.
The 2010 U.S. population within 10 miles (16.1 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 (80.5 km) was 909,523, an increase of 3.2 percent since 2000. Cities within 50 miles include Syracuse (36 miles to city center).
1991 site area emergency
On August 13, 1991 a "site area emergency" was declared at the plant. According to TimeTime (magazine)
Time is an American news magazine. A European edition is published from London. Time Europe covers the Middle East, Africa and, since 2003, Latin America. An Asian edition is based in Hong Kong...
magazine, this was the third occasion an SAE had been declared at a US nuclear plant.
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. The reactor came back online 13 hours after the incident.
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.See also
- Darlington Nuclear Generating StationDarlington Nuclear Generating StationDarlington Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Clarington, Ontario. The facility derives its name from the Township of Darlington, the former name of the municipality in which it is located.The Darlington station is a large...
— located on the opposite side of Lake Ontario - Nuclear Power 2010 ProgramNuclear Power 2010 ProgramThe "Nuclear Power 2010 Program" was unveiled by the U.S. Secretary of Energy Spencer Abraham on February 14, 2002 as one means towards addressing the expected need for new power plants...
- Pickering Nuclear Generating StationPickering Nuclear Generating StationPickering Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Pickering, Ontario. The facility derives its name from the City of Pickering in which it is located....
— located on the opposite side of Lake OntarioLake OntarioLake Ontario is one of the five Great Lakes of North America. It is bounded on the north and southwest by the Canadian province of Ontario, and on the south by the American state of New York. Ontario, Canada's most populous province, was named for the lake. In the Wyandot language, ontarío means...