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NRC recommends early site permit for Clinch River Nuclear Site

Posted at 8:48 am April 8, 2019
By John Huotari Leave a Comment

TVA Clinch River Site

The Clinch River Site in west Oak Ridge is pictured above. The road running from bottom to top on the right (east) side of the Clinch River connects to Bear Creek Road in southwest Oak Ridge. Highway 58 is off to the top left of the photo and the Heritage Center is to the north. (Photo courtesy TVA)

 

Note: This story was last updated at 11:30 a.m.

The U.S. Nuclear Regulatory Commission has issued a final environmental impact statement, and the staff has recommended, based upon the environmental review, issuing an early site permit for the Clinch River Nuclear Site in west Oak Ridge, where two or more small modular nuclear reactors could be built.

The final environmental impact statement, or EIS, was issued by the NRC on April 3. A notice of the EIS and the staff’s recommendation was published in the Federal Register on Monday, April 8.

The 935-acre Clinch River Nuclear Site is located in Roane County along the Clinch River.

An application for the early site permit was submitted by the Tennessee Valley Authority in May 2016. A draft EIS was published last year, and in June, the NRC had public meetings in Kingston to discuss its draft conclusion that environmental impacts would be small enough to allow the early site permit to be issued.

An early site permit is the NRC’s approval of a site for one or more nuclear power facilities. It does not authorize the actual construction and operation of a new nuclear power plant. That requires a construction permit and an operating license, or a combined license.

The NRC said the application and review process for an early site permit makes it possible to evaluate and resolve safety and environmental issues at a site before an applicant commits a lot of resources to the project. If an early site permit is approved, an applicant can “bank” the site for up to 20 years.

The Advisory Committee on Reactor Safeguards recommended approving the early site permit for the Clinch River Nuclear Site in a January 9 letter to the NRC. The committee reports on the parts of an early site permit application that concern safety.

The NRC staff said its recommendation to issue the early site permit was based upon an environmental report submitted by TVA; consultation with federal, state, tribal, and local agencies; the NRC staff’s independent review; the staff’s consideration of comments received during the environmental review; and the assessments summarized in the final EIS, including potential mitigation measures identified in the environmental report and the final EIS.

The NRC staff said it has concluded that “there are no environmentally preferable or obviously superior sites in the region of interest.”

The Clinch River Nuclear Site could be used to demonstrate small modular reactors with a maximum total electrical output of 800 megawatts.

“The final environmental impact statement is an important milestone since it validates that the Clinch River site is capable of safely supporting the type of facility we are proposing, but it is only one of many along the way,” TVA spokesperson Jim Hopson said Monday morning.

Now that the final EIS has been published, there will be a mandatory hearing with the NRC after a final safety evaluation report is issued. The NRC expects that report to be published in June. The five-member commission will make a decision after the hearing about whether to issue the early site permit.

A contested hearing could be held by the Atomic Safety and Licensing Board panel if a member of the public or an organization successfully files a petition that raises safety or environmental concerns about granting the site a permit, the NRC said.

The NRC said an authorization for the construction or operation of new nuclear units at the Clinch River site is not being sought at this time.

The potential timing of any reactors being built at the site is not clear. Among other things, TVA doesn’t control the reactor certification process.

“There are currently no certified small modular reactor designs available, but TVA will continue working to ensure we are ready to fully evaluate them when they are available,” Hopson said.

Financial considerations would have to be evaluated, and the TVA board of directors would have the final decision “based on what they believe will be in the best interest of the people of the Tennessee Valley,” Hopson said.

Since a design hasn’t been certified for a small modular reactor, TVA used what is known as a “plant parameter envelope” as a surrogate for a nuclear power plant and its facilities when applying for the early site permit. The “plant parameter envelope” estimated the potential environmental impacts of building and operating two or more small modular reactors at the site. TVA used information from four small modular reactor vendors to develop the “plant parameter envelope.”

Image by the NRC from the April 2019 "Reader's Guide" for the "Final Environmental Impact Statement for an Early Site Permit at the Clinch River Nuclear Site."

Image by the NRC from the April 2019 “Reader’s Guide” for the “Final Environmental Impact Statement for an Early Site Permit at the Clinch River Nuclear Site.”

 

A reader has asked why TVA might consider adding new generating capacity at the Clinch River site even as it plans to retire coal-fired units like the Bull Run Fossil Plant in Claxton, citing flat or declining demand.

“Among the major differences between the two types of units, small modular reactors have the ability to ‘load follow’ while coal-fired units like Bull Run do not,” Hopson said. “What this means is that the power output of SMRs can easily be turned up or turned down based on demand in real time, while Bull Run was designed to only operate at full or near full capacity. That makes SMRs easier to manage in a system that will increasingly include intermittent power sources like solar and wind.”

The Clinch River Nuclear Site is about 10 miles south of the urban center of Oak Ridge, about 16 miles west of Knoxville, and seven miles east of Kingston. It’s adjacent to the U.S. Department of Energy’s Oak Ridge Reservation.

The small modular reactors at the Clinch River Nuclear Site are one of several non-residential developments under way or being considered in west Oak Ridge. Two others are the K-25 History Center, Equipment Building, and Viewing Tower at Heritage Center (the former K-25 site), and the proposed Oak Ridge Airport at Heritage Center.

See a Reader’s Guide to the final EIS for the Clinch River Nuclear Site here.

See the NRC’s page on the early site permit application for the Clinch River Nuclear Site here.

See the environmental impact statement here.

More information will be added as it becomes available.

Clinch-River-Site-Bear-Creek-Road-Entrance-March-27-2016

The small nuclear reactors that could be built along the Clinch River could provide enough electricity to power several cities the size of Oak Ridge. The Bear Creek Road entrance to the Clinch River Site, where the reactors could be built by the Tennessee Valley Authority, is pictured above on Sunday, March 27, 2016. (Photo by John Huotari/Oak Ridge Today)

 

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Filed Under: Business, Federal, Front Page News, Government, Government, Oak Ridge, Slider Tagged With: Advisory Committee on Reactor Safeguards, Clinch River Nuclear Site, Clinch River Site, early site permit, EIS, environmental impact statement, Federal Register, Jim Hopson, NRC, nuclear power, small modular nuclear reactors, small modular reactors, SMRs, Tennessee Valley Authority, TVA, U.S. Nuclear Regulatory Commission

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