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Safety at Nuclear Power Plants

The nation’s nuclear energy plants are among the safest industrial facilities in the United States. These well-designed facilities include extensive environmental monitoring programs that protect plant workers, the public and the environment. U.S. nuclear plants are built to withstand impacts from earthquakes, floods, hurricanes and aircraft and have the most sophisticated security and emergency preparedness plans in the U.S. industrial sector.

Making Our Facilities Even Safer

The events in Japan at Fukushima on March 11, 2011 resulted in major changes at all ten Exelon nuclear energy facilities and across the industry. This short video was designed to inform our many stakeholders of those changes and demonstrate how we are incorporating the lessons learned from Fukushima to make Exelon’s facilities even safer and better prepared for the unimaginable.

Emergency Preparedness

The nuclear industry has the most sophisticated security and emergency preparedness plans in the U.S. industrial sector. 

  • Exelon Nuclear Emergency Preparedness
    All Exelon facilities employ sophisticated emergency response plans to protect public health and safety.  Visit the individual plant profile pages (listed below) to download emergency plans specific to each nuclear plant community. Read more about Exelon's efforts to keep the public safe.
  • Emergency Planning - Nuclear Regulatory Commission (NRC)
    Nuclear power plant owners, government agencies, state and local officials, as well as thousands of volunteers and first responders have worked together for more than 20 years to create a system of emergency preparedness and response that will serve the public well in the unlikely event of an emergency. [PDF | 132 KB]
  • Perspective on Radiation Release & Emergency Planning at U.S. Nuclear Power Plants - Nuclear Energy Institute (NEI)
    Emergency planning zones (EPZ) around U.S. nuclear plants were determined in 1978 by a task force formed by the U.S. Nuclear Regulatory Commission, the U.S. Environmental Protection Agency, and the Federal Emergency Management Agency.  Read more about how EPZs were determined and the continuous monitoring of radiological conditions at nuclear power plants.  [PDF | 31 KB]

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Protection from Earthquakes and Natural Disasters

The U.S. Nuclear Regulatory Commission requires nuclear power plants to be able to withstand the most severe natural phenomena that may occur in the region where they are located, including earthquakes, tsunamis, hurricanes, tornados, fires and floods. The NRC requires additional safety margins to account for any uncertainties and to ensure the plant can remain safe in the event that an accident and a severe natural phenomenon occur at the same time.

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Safe Operations & Used Fuel Management

All Exelon Nuclear plants are able to safely shut down and keep fuel cooled even without electricity from the grid. Exelon safely stores its used fuel in used fuel pools or dry casks consistent with federal regulations.

  • Radiological Monitoring at Exelon's Nuclear Plants
    Exelon continuously monitors changes and trends in radiation levels to allow public health officials to make protective action recommendations if needed.
    [PDF | 53KB]
  • Exelon Investor Presentation about Japan 
    On March 24, 2011, Exelon and Exelon Generation Company conducted a conference call with investors to present an update on the nuclear situation in Japan and the safety of Exelon's nuclear plants, including information about Exelon's safe storage of used fuel. [PDF | 864 KB]
  • U.S. Nuclear Plants Reconfirming Safety - NEI
    Electric companies are reconfirming the safety of nuclear energy facilities and the readiness of emergency response plans, especially in response to severe events.  [PDF | 518 KB]
  • Safely Managing Used Nuclear Fuel - NEI
    The industry provides information about the various methods for safely storing used nuclear fuel. [PDF 54 KB | Link to NEI]
  • Monitoring Nuclear Plants to Protect the Environment - NEI
    Nuclear power plant sites are among the most thoroughly studied and monitored environments. Environmental monitoring programs are under way even before plants go into service, ensuring that they are operating safely and protecting people and the environment. [PDF | 69 KB]
  • FAQ on Japan - NEI
    The U.S. nuclear energy industry has started an assessment of the events in Japan and is taking steps to ensure that U.S. reactors could respond to events that may challenge safe operation of nuclear facilities.  This answers some of the most frequently asked questions about the events in Japan and the U.S. nuclear industry's response. [PDF | 218 KB]

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Keeping Our Communities Safe

Every year, each Exelon Nuclear plant conducts an integrated exercise with state and local emergency organizations. These integrated exercises test and demonstrate the ability of Exelon and first responders to protect the public in the unlikely event of a plant emergency, as well as to respond to a hostile action at a plant. The NRC also participates in – and grades – emergency response drills to ensure readiness. 

To download the emergency plan and safety fact sheet for each of Exelon's nuclear plants, please visit the individual plant profile pages below.  The links to these downloads can be found on the right side of the profile page.

Braidwood Generating Station

Braidwood Generating Station

Braidwood Generating Station, Exelon's newest nuclear power station, is located in northeastern Illinois, about 60 miles southwest of Chicago in Will County. The 2-unit station is built on a 4,457-acre site and its cooling lake was formed from scarred farming land and an old strip mine.

35100 South Route 53
Braceville, Illinois 60407-9619
directions
Byron Generating Station

Byron Generating Station

Byron Generating Station is located near Byron in northern Illinois, about 110 miles west of Chicago. It’s a 2-unit nuclear power facility that can produce enough electricity to power more than 2 million average American homes.

4450 North German Church Road
Byron, Illinois 61010-9794
directions
Calvert Cliffs

Calvert Cliffs

Located in Lusby, Md., Calvert Cliffs Unit 1 began generating electricity in 1975 and Unit 2 joined the system in 1977. Since then, Calvert Cliffs has continually set records for power production and worker safety.

1650 Calvert Cliffs Parkway
Lusby, Maryland 20657
directions
Clinton Power Station

Clinton Power Station

Clinton Power Station, one of Exelon's newest nuclear power plants, is located in central Illinois. The unit can produce enough energy to power about 1 million average American homes.

8401 Power Road
Clinton, Illinois 61727
directions
Dresden Generating Station

Dresden Generating Station

Dresden Generating Station, located in rural Grundy County in northern Illinois, is home to the nation’s first full-scale, privately financed nuclear power plant, which began operation in 1960. The 2-unit facility can produce enough energy to power more than 1.5 million average American homes.

6500 North Dresden Road
Morris, Illinois 60450-9765
directions
LaSalle County Generating Station

LaSalle County Generating Station

LaSalle County Generating Station is located in rural LaSalle County in northern Illinois, about 75 miles southwest of Chicago. The station is built on a 3,055-acre site with a 2,058-acre man-made cooling lake, which is also a popular fishery managed by the Illinois Department of Natural Resources.

2601 North 21st Road
Marseilles, Illinois 61341-9757
directions
Limerick Generating Station

Limerick Generating Station

Limerick Generating Station is located in southeastern Pennsylvania, about 20 miles northwest of Philadelphia in Montgomery County. The station is built on a 600-acre site and draws its cooling water from the Schuylkill River.

3146 Sanatoga Rd.
Pottstown, Pennsylvania 19464
directions
Nine Mile Point

Nine Mile Point

Unit 1 is a 620 MW reactor that entered service in 1970 and Unit 2 is a 1,138 MW reactor that began operation in 1988. As part of the company’s balanced growth initiative, Constellation Energy purchased Nine Mile Point in 2001 from Niagara Mohawk Power Corporation and other utilities. Constellation Energy Nuclear Group, a joint venture between Constellation Energy and EDF Group, owns 100 percent of Unit 1 and 82 percent of Unit 2. Long Island Power Authority owns 18 percent of Unit 2. Constellation Energy owns 50.01 percent of CENG. EDF owns 49.99 percent of CENG.

348 Lake Road
Oswego, New York 13126
directions
Oyster Creek Generating Station

Oyster Creek Generating Station

Oyster Creek Generating Station is located in Lacey Township, Ocean County, near the New Jersey shore. Oyster Creek began operating in 1969 as the first large-scale commercial nuclear power plant in the United States. Its single boiling water reactor produces 645 net MW, enough to power 600,000 average American homes.

Route 9 South PO Box 388
Forked River, New Jersey 08731
directions
Peach Bottom Atomic Power Station

Peach Bottom Atomic Power Station

Peach Bottom Atomic Power Station, located on the west bank of the Conowingo Pond (Susquehanna River) in Delta, Pennsylvania, is a two-unit nuclear generation facility that powers two million area homes. The plant's two reactors began operation in 1974 and produce a total of 2,280 megawatts.

1848 Lay Road
Delta, Pennsylvania 17314
directions
Quad Cities Generating Station

Quad Cities Generating Station

Quad Cities Generating Station is a dual-unit boiling water reactor nuclear power plant located in Cordova, Illinois. Built on 765-acre site along the Mississippi River, this combined production is enough electricity to power more than 1.5 million average American homes.

22710 206th Avenue North
Cordova, Illinois 61242-9740
directions
R.E. Ginna

R.E. Ginna

R.E. Ginna Nuclear Power Plant is located on 426 acres along the south shores of Lake Ontario in Ontario, NY - about 20 miles northeast of Rochester and 53 miles southwest of Constellation Energy’s Nine Mile Point Nuclear Station. Constellation Energy bought Ginna, a pressurized one-unit water reactor on June 10, 2004. Constellation Energy Nuclear Group, a joint venture between Constellation Energy and EDF Group, owns 100 percent of R.E. Ginna Nuclear Power Plant. Constellation Energy owns 50.01% of CENG. EDF owns 49.99% of CENG.

1503 Lake Road
Ontario, New York 14519
directions
Salem Generating Station

Salem Generating Station

Salem Nuclear Power Plant is located in Hancocks Bridge, N.J. about 18 miles south of Wilmington, Del. It’s a 2-unit nuclear power facility that can produce enough electricity to power more than 2 million average American homes. PSEG owns 57% of Salem, Exelon Corporation owns the remaining 43%.


Hancocks Bridge, New Jersey 
Three Mile Island

Three Mile Island

Three Mile Island is located in central Pennsylvania, about 10 miles south of Harrisburg, in Londonderry Township. The station is built on an island in the Susquehanna River. The plant is capable of generating enough energy to power over 800,000 average American homes.

Route 441S P.O. Box 480
Middletown, Pennsylvania 17057
directions
Zion Station

Zion Station

Zion Station is a former nuclear generating facility that has been converted into an electrical grid voltage-stabilizing facility. It is located on the western shore of Lake Michigan in the Northeast Illinois community of Zion. After more than 20 years of operation, Zion's two reactors were permanently shut down on January 15, 1998.

101 Shiloh Blvd.
Zion, Illinois 60099
directions

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Nuclear Safety