Seabrook Nuclear Power Plant

LFDA Editor

NextEra Energy Seabrook is seeking to renew the Seabrook Nuclear Power plant's operating license, but the process has encountered several roadblocks, delaying the license approval.

On June 1, 2010, NextEra Energy filed an application with the U.S. Nuclear Regulatory Commission (NRC) to renew the plant's operating license for 20 years -- from 2030 to 2050. Under NRC regulations, the original operating license for a nuclear power plant has a term of 40 years. A plant license may be renewed for up to an additional 20 years.

The NRC license renewal process generally takes 22 to 30 months following application submission. Aside from a thorough review and inspection, the renewal process also includes several public hearings.

The Seabrook Nuclear Power Plant is a pressurized water reactor that sits on a 900-acre site in the towns of Seabrook, Hampton, and Hampton Falls. It began operation in 1990 and generates approximately 1 million watts of electricity -- enough to power 900,000 homes daily. Forty-four percent of New Hampshire's electricity is generated by Seabrook, according to the Nuclear Energy Institute.

Proponents of nuclear power say it is a clean energy source that helps reduce U.S. dependency on foreign oil. Opponents believe the risks of radioactive contamination outweigh the benefits.

Nuclear power safety was thrust back into the media spotlight in 2011 with the earthquake/tsunami-induced meltdown of Japan's Fukushima Dai-ichi nuclear plant. Spent fuel rods caught fire and released radioactive material after the plant's cooling system failed.

According to NextEra Energy:

  • The (Seabrook) plant is designed to withstand the force of the earthquake that hit the Japanese plants, which is significantly higher than any recorded earthquake in New England history.
  • The plant is located two miles inland and elevated 20 feet above sea level to protect against flooding and extreme storm surges.

Spent fuel rods are stored in cooling pools at Seabrook and other nuclear plants across the country because the U.S. lacks a central repository. Congress passed a law in 2002 designating Nevada's Yucca Mountain as a repository for high-level nuclear waste, but Energy Secretary Steven Chu decided to terminate the project this year.

The International Atomic Energy Agency's Operating Safety Review Team released its evaluation of Seabrook in April 2012. The investigation uncovered alkali-silica reaction (ASR) in several concrete structures. ASR is a slow chemical reaction that ultimately leads to micro-cracks in concrete and cement.

While NextEra is taking steps to mitigate the problem, the NRC estimates ASR has delayed Seabrook's re-licensing application several years while it waits for testing to be completed by the University of Texas.

Citizen opposition

Opponents of the Seabrook license extension filed federal action against the NRC in March 2012, accusing the commission of violating the National Environmental Policy Act (NEPA) when it voted against allowing three groups (the Seacoast Anti-Pollution League, the New Hampshire Chapter of the Sierra Club, and Beyond Nuclear) into a NEPA hearing to discuss energy alternatives to nuclear power. The NRC opted to allow the groups into the hearing, but then reversed the ruling. An additional lawsuit was filed against the NRC on August 16 due to the ruling reversal, citing an additional violation of the Atomic Energy Act.

In November 2012, the US Circuit Court of Appeals in Boston heard the first oral arguments from in the case. The groups argued that alternative energies will likely emerge in the coming years, rendering the Seabrook energy supplies (and its relicensing) unnecessary. In January 2013, the Federal Appeals Court rejected the petition of the groups, barring them from participating in the process. Two other citizen groups, Friends of the Coast and the New England Coalition, are also opposing the relicensing.

​Friends of the Coast/New England Coalition, which had been protesting the relicensing of Seabrook Station, reached a settlement with station owner NextEra in August of 2013. The settlement was approved by the NRC's Atomic Safety and Licensing Board. This cleared the final contention against the relicensing of the plant by nuclear safety advocates.

NRC Safety Evaluation Report

More concerns about the plant came about after a routine drill at the Seabrook Station in April 2012, when the employees failed to recognize a signal for radioactivity release, among other signals. The Nuclear Regulatory Commission issued the plant a "white inspection finding," which signifies a low- to moderate-safety issue. A spokesman for the plant told WMUR that the issues were being addressed.

Following the safety drill issue, the NRC issued its Safety Evaluation Report of the Seabrook Station on June 8, 2012, and listed the following safety-related issues as "open items" to be addressed by the station. The station is required to address these issues, as they act as roadblocks to the approval of the license extension.

According to the Safety Evaluation Report, the issues for the station to address are:

  • the aforementioned alkali-silica reaction, which is causing the degradation of concrete essential to the plant's structure 
  • issues with water leakage between the two containment shells surrounding the reactor 
  • plans to maintain the aging plant structure during the remainder of its license and into the extended period 
  • assessment and replacement of degrading bolts and welds on the structure 
  • the issue of borated water and its effects on the structure 
  • standards for pressure-temperature margins around use of fragile vessels in nuclear reaction
  • stress or damage that water intrusion may be causing 

Five NRC staff visited the plant on June 18, 2012, but declined to speak with press about the visit. The visit was called "routine" and intended for the staff to become more familiar with the plant before making any decisions on relicensing. The plant received a clean report card later that month from its quarterly inspection.

During a June 30, 2014, inspection, NRC staff discovered two new "green" issues of low safety significance and one violation; a subsequent inspection of the plant by the NRC on October 16 identified three violations in need of correction.

In July 2015, the Nuclear Regulatory Commission released its determination that the station could operate for another 20 years beyond 2030 without negatively impacting the environment. This allows NextEra to move forward in the process to re-license the plant. The NRC’s final report on the potential impact of renewing the plant’s license, released on July 30, stated, “The NRC’s preliminary recommendation is that the adverse environmental impacts of license renewal for Seabrook are not great enough to deny the option of license renewal."

An Advisory Committee on Reactor Safeguards’ (ACRS) subcommittee public hearing scheduled for May 2016 was delayed pending a report form NextEra Energy detailing its long-term plan for addressing ASR, which is expected before the end of the year.

The NRC has set up the following webpage to continue the information release to the public on the happenings with Seabrook Station:


"For" Position

By LFDA Editor


  • One uranium fuel pellet can deliver the power production equivalent of 1 ton of coal, 17,000 cubic feet of natural gas, 149 gallons of oil and 5,000 pounds of wood.1

Low Electricity Cost:

  • Nuclear plants are the lowest-cost producer of baseload electricity. The average production cost of 2.14 cents per kilowatt-hour includes the costs of operating and maintaining the plant, purchasing fuel and paying for the management of used fuel.

Environmentally friendly:

  • Nuclear power plants emit fewer greenhouse gases than coal, fuel or gas plants.


  • Nuclear energy is not affected by weather conditions, volatile market fluctuations, or dependence on foreign suppliers.

1. Nuclear Energy Institute Fuel Chart

"Against" Position

By LFDA Editor


  • Accidents and malfunctions at nuclear power plants can result in the release of large amounts of radiation. Human exposure to high levels of radiation can result in severe illness, cancer and death.

Nuclear power plants are vulnerable to terrorist attacks:

Waste disposal remains a serious challenge:

  • High level nuclear waste (plutonium, uranium and spent fuel rods) is highly radioactive and remains dangerous for thousands of years. There is approximately 70,000 metric tons of high level nuclear waste stored at reactor sites across the country. The Nuclear Waste Policy Act of 1982 mandated the federal government establish a national repository, but it has yet to do so.


  • The construction of a new nuclear power plant can take about 10 years and cost approximately $2 billion. It can also cost billions of dollars to decommission older plants.


Killed in the House

Reestablishes the High-Level Radioactive Waste Act and establishes a nuclear waste storage fee.

Killed in the House

Repeals the state's atomic energy policy, with various regulations in relation to nuclear power and a statement in favor of nuclear power.

Should the license for the Seabrook Nuclear Power Plant be renewed?


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Issue Status

The Nuclear Regulatory Commission's determination that Seabrook Station could operate for another 20 years beyond 2030 without negatively impacting the environment allowed NextEra Energy to move forward in the process to re-license the plant.

Members of the public spoke out against relicensing the plant at the NRC's annual meeting in 2016, many expressing concern over the concrete degradation discovered at the plant over the past several years. The NRC has said that in order for the plant to be relicensed, NextEra Energy must show that the degradation can be controlled and does not pose a safety concern. Hearings began in early 2017 to get public feedback on NextEra's license amendment request.

For bills relating to nuclear energy in the 2016-2017 legislative session, see the Legislative History section.


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