Oak Ridge Today





For members: TVA could test new nuclear reactors in Oak Ridge

Posted at
By Leave a Comment

 

TVA Clinch River Site

The Tennessee Valley Authority could use the potential nuclear reactor site in west Oak Ridge to test new reactors and nuclear technologies.

The rest of this story is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.

Already a member? Great! Thank you! Sign in here.

Not a member? No problem! Subscribe here:

Basic

Pro

Temporary

If you prefer to send a check, you may do so by mailing one to:

Oak Ridge Today
P.O. Box 6064
Oak Ridge, TN 37831

We also have advanced subscription options. You can see them here.

We also accept donations. You can donate here. A donation of $50 or more will make you eligible for a subscription.

Thank you for reading Oak Ridge Today. We appreciate your support!

 

TVA Clinch River Site

The Tennessee Valley Authority could use the potential nuclear reactor site in west Oak Ridge to test new reactors and nuclear technologies.

The rest of this story is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.

Already a member? Great! Thank you! Sign in here.

Not a member? No problem! Subscribe here:

Basic

Pro

Temporary

If you prefer to send a check, you may do so by mailing one to:

Oak Ridge Today
P.O. Box 6064
Oak Ridge, TN 37831

We also have advanced subscription options. You can see them here.

We also accept donations. You can donate here. A donation of $50 or more will make you eligible for a subscription.

Thank you for reading Oak Ridge Today. We appreciate your support!

TVA asks for public comments about proposed nuclear reactor site

Posted at
By 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)

The Tennessee Valley Authority is asking for public comment about a proposal to build one or more small or advanced nuclear reactors in west Oak Ridge.

The reactors would be on the Clinch River Nuclear Site, near the Clinch River and south of Heritage Center (the former K-25 site) in Roane County.

The reactors could be advanced or small modular nuclear reactors. They would have a maximum total electrical output of 800 megawatts. They would be smaller than traditional nuclear power plants, and they would produce less power.

Oak Ridge Today has previously reported that the reactors could provide enough electricity to power several cities the size of Oak Ridge

[Read more…]

NRC could finish design review of small reactor by 2020

Posted at
By Leave a Comment

Cross-sectional view of the NuScale Power small modular reactor building. (Image courtesy NuScale Power)

NuScale Power of Portland, Oregon, said Monday that the U.S. Nuclear Regulatory Commission has completed the second and third phases of its review of NuScale’s design for a small modular nuclear reactor, and the NRC is on track to complete the design review by September 2020.

This could be important to Oak Ridge because small modular reactors are possible at the Clinch River Nuclear Site in west Oak Ridge, although there are additional approvals that would be required.

The completion of the second and third phases of the NuScale design review is six weeks ahead of schedule, the company said in a press release on Monday.

“Completing phases 2 and 3 of the NRC’s design review certification process is a critical milestone for our company and the advanced nuclear industry,” said NuScale Chairman and Chief Executive Officer John Hopkins.

[Read more…]

Small reactors can be safely located on Clinch River site, NRC says

Posted at
By Leave a Comment

Two or more small modular nuclear reactors could be built on a 935-acre area of the Clinch River Nuclear Site in west Oak Ridge, south of Heritage Center near Highway 58. (Image from the “Final Safety Evaluation Report for the Early Site Permit Application for the Clinch River Nuclear Site” published by the U.S. Nuclear Regulatory Commission in June 2019.)

Two or more small nuclear reactors could be safely located on a site in west Oak Ridge, a federal agency said this month.

The reactors could be built on the Clinch River Nuclear Site. That’s a 935-acre site south of Heritage Center (the former K-25 site) in the Roane County portion of Oak Ridge. The plant would be off Bear Creek Road near Highway 58 on a peninsula surrounded by the Clinch River on the east, south, and west.

The U.S. Nuclear Regulatory Commission has completed a final safety evaluation report for an early site permit application for the site.

“The report concludes there are no safety aspects that would preclude issuing the permit for the site,” the NRC said in a press release Tuesday. The report, which is about 600 pages, had been expected this month.

The Tennessee Valley Authority applied for the early site permit in May 2016. The NRC’s final safety evaluation report for the site was published Friday, June 14.

[Read more…]

Y-12 reactor core could be used for power on Moon, Mars

Posted at
By Leave a Comment

NASA fission power system concept (Image credit: NASA Glenn Research Center)

NASA fission power system concept (Image credit: NASA Glenn Research Center)

 

A reactor core that includes highly enriched uranium alloy components produced at the Y-12 National Security Complex in Oak Ridge could power future space exploration, including on the Moon and Mars, federal officials said.

The reactor core fabricated at Y-12 has been delivered to the Nevada National Security Site, where it is being used in a experiment called Kilopower. That’s a new power source that could provide safe, efficient energy for future robotic and human space exploration missions, according to the National Aeronautics and Space Administration, or NASA. The power source could help provide lighting, water, and oxygen on those missions.

NASA said the pioneering space power system, which would use nuclear fission, could provide up to 10 kilowatts of continuous electrical power for at least 10 years. That’s enough power to run two average households.

Four Kilopower units would provide enough power to establish an outpost, NASA said. The system could enable long-term stays on planetary surfaces.

Testing, which started in November, is being performed through this spring at the National Critical Experiments Research Center in the Device Assembly Facility at the Nevada National Security Site. [Read more…]

Atomic Heritage Foundation launches new audio, visual program on Oak Ridge

Posted at
By Leave a Comment

Bill Wilcox 90th Birthday Party

Oak Ridge City Historian Bill Wilcox, who died in 2013, was a longtime advocate for preserving the city’s history, including parts of its federal facilities. Wilcox is pictured above at his 90th birthday party in the spring of 2013.

 

Submitted

“There was construction going on everywhere you looked,” Bill Wilcox remembered, describing his first impressions of Oak Ridge, Tennessee. “Trucks and people just crawling all over the place, hammers and banging. Wooden structures going up everywhere. Nothing was paved, and there weren’t any sidewalks.”

Wilcox was one of the thousands of people who moved to the new “Secret City” of Oak Ridge to work on the Manhattan Project, the top-secret World War II effort to develop an atomic bomb.

The Atomic Heritage Foundation has launched a new online interpretive program on Oak Ridge with 16 audio/visual vignettes. This beta program is part of AHF’s “Ranger in Your Pocket” series on the Manhattan Project, which focuses on former Manhattan Project sites and features vignettes with eyewitness accounts and expert commentary. AHF welcomes feedback and will improve and expand upon the program over the next year, a press release said.

In September 1942, Manhattan Project director General Leslie Groves designated “Site X,” approximately 59,000 acres of land on the Clinch River in rural eastern Tennessee, as the site for the project’s uranium production facilities. Approximately 3,000 people living in the area in five small farming communities were forced to leave their homes and land with minimal compensation. Construction of a new city began at breakneck speed. By the end of World War II, some 75,000 people would call Oak Ridge home, making it the fifth-largest city in Tennessee. [Read more…]

Small nuclear reactors on Clinch River could power several cities the size of Oak Ridge

Posted at
By Leave a Comment

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)

 

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. They could also be, depending upon the timing, the first commercial reactors of their type in the United States.

They’re known as small modular reactors, or SMRs. They could generate 80 to 200 megawatts each. One hundred megawatts is enough to power about 60,000 homes. Oak Ridge has about 12,000 homes.

Several companies are working on SMR designs, but so far none have been certified by the U.S. Nuclear Regulatory Commission, said Jim Hopson, public relations manager for the Tennessee Valley Authority.

By May 12, TVA plans to submit an application to the NRC for what is known as an early site permit to build SMRs on the Clinch River Site in west Oak Ridge. Hopson likened an early site permit, or ESP, to a pre-approval for a home loan, although he said that is an oversimplification.

“It’s similar to pre-approving yourself for a loan,” Hopson said Friday. “You get the preliminaries out of the way.” [Read more…]

ORNL supports new projects to develop advanced nuclear technologies

Posted at
By Leave a Comment

Researchers at the U.S. Department of Energy’s Oak Ridge National Laboratory will support two new DOE-funded projects to explore, develop, and demonstrate advanced nuclear reactor technologies.

The projects announced January 15 will allow industry-led teams with participants from universities and national laboratories to further nuclear energy technology, and will enable companies to further develop their advanced reactor designs with potential for demonstration in the mid-2030s. Initially, DOE’s investment will be $6 million for each project and both companies will provide cost-share. The possible multi-year cost-share value for this research is up to $80 million.

A project led by Southern Company Services, a subsidiary of Southern Company, focuses on molten chloride fast reactors, or MCFRs. The effort includes ORNL, TerraPower, the Electric Power Research Institute, and Vanderbilt University. [Read more…]

Fuels for the final frontier: Y-12 to help create fuel for NASA space exploration

Posted at
By Leave a Comment

Y-12 Development's Roland Seals and NASA and DOE Officials

Y-12 Development’s Roland Seals explains Y‑12’s infrared heating capabilities to NASA and DOE Office of Nuclear Energy officials. (Photo by Brett Pate)

 

The Y-12 National Security Complex is taking their uranium expertise to the next level—outer space.

The NNSA Production Office (NPO) at Y-12 struck an agreement earlier this year with NASA’s Glenn Research Center in Cleveland, Ohio, to support the design of a small nuclear-powered reactor with the potential to lead to small fission power reactors for future space exploration missions.

For the first phase of the project, Y-12 will research materials and manufacturing processes for a physics demonstration of a kilowatt-range nuclear reactor, known as project Kilopower, using an enriched uranium-molybdenum metallic fuel core and a lithium-hydride shield. The Kilopower concept was a 2013 R&D 100 Award winner for proof-of-principle experiments performed at the National Criticality Experiments Research Center in Nevada led by Los Alamos National Laboratory in collaboration with NASA Glenn and National Security Technologies.

“Science missions are seeking greater power and functionality,” explained Lee Mason, chief of the Thermal Energy Conversion Branch at Glenn. “We’re planning to demonstrate the technology in a ground test using a prototype U-235 reactor core.” [Read more…]

High Flux Isotope Reactor at ORNL named Nuclear Historic Landmark

Posted at
By Leave a Comment

High Flux Isotope Reactor at ORNL

The High Flux Isotope Reactor vessel at Oak Ridge National Laboratory resides in a pool of water illuminated by the blue glow of the Cherenkov radiation effect. (Photo courtesy ORNL)

 

The High Flux Isotope Reactor, or HFIR, now in its 48th year of providing neutrons for research and isotope production at Oak Ridge National Laboratory, has been designated a Nuclear Historic Landmark by the American Nuclear Society.

“This designation from the ANS recognizes HFIR’s role in the history of the nuclear age, but it also speaks to the excellence of its design and operation,” ORNL Director Thom Mason said. “HFIR remains one of the world’s most capable reactor-based neutron science, radioisotope production, and materials irradiation facilities, and we expect that to continue for many years.”

The designation was proposed by the ANS honors and awards committee and approved on initial ballot by the board of directors.

“The ANS Nuclear Historic Landmark signifies that a nuclear facility has played an important role in nuclear science and engineering,” ANS President Michaele C. Brady Raap said. “HFIR, with its preeminent role in isotope production and neutron science, certainly meets that criteria.”

The reactor was conceived in the late 1950s as a production reactor to meet anticipated demand for transuranic isotopes (“heavy” elements such as plutonium and curium). HFIR today is a U.S. Department of Energy Office of Science User Facility and one of the world’s sole sources of the radioisotope californium-252, used in industry and medicine. ORNL is a DOE lab. [Read more…]

ORNL’s CASL, Westinghouse simulate neutron behavior in nuclear reactor core

Posted at
By Leave a Comment

AP1000 Pressurized Water Reactor

CASL is developing and applying new modeling and simulation technology (Virtual Environment for Reactor Applications Core Simulator or VERA-CS) to resolve and predict the detailed neutron distribution of the power-generation reactor core residing in reactor vessels. (Image courtesy of Westinghouse)

Test run signals emergence of the next generation in nuclear power reactor analysis tools

Scientists and engineers developing more accurate approaches to analyzing nuclear power reactors have successfully tested a new suite of computer codes that closely model “neutronics”—the behavior of neutrons in a reactor core.

Technical staff at Westinghouse Electric Company LLC, supported by the research team at the Consortium for Advanced Simulation of Light Water Reactors, or CASL, used the Virtual Environment for Reactor Applications core simulator (VERA-CS) to analyze its AP1000 advanced pressurized water reactor. The testing focused on modeling the startup conditions of the AP1000 plant design. [Read more…]

CASL milestone validates reactor model using TVA data

Posted at
By Leave a Comment

CASL VERA Simulation

This CASL visualization shows the thermal distribution of neutrons in Watts Bar Unit 1 Cycle 1 reactor core at initial criticality, as calculated by the VERA program. (Image courtesy Oak Ridge National Laboratory)

The Consortium for Advanced Simulation of Light Water Reactors this week announced that its scientists have successfully completed the first full-scale simulation of an operating nuclear reactor.

Headquartered at Oak Ridge National Laboratory, CASL is modeling nuclear reactors on supercomputers to help researchers better understand reactor performance with much higher reliability than previously available methods, with the goal of ultimately increasing power output, extending reactor life, and reducing waste.

Simulation results from the Virtual Environment for Reactor Applications (VERA) program, which was developed by CASL, were compared with actual data provided by the Tennessee Valley Authority’s Watts Bar Nuclear Plant in Tennessee, which confirmed its accuracy. [Read more…]

About Us

About Oak Ridge Today
What We Cover

How To

Advertise
Subscribe

Contact Us

Contact Oak Ridge Today