Oak Ridge Today

Kairos Power begins construction on demonstration reactor​

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Kairos Power has started construction on a test nuclear reactor in west Oak Ridge. The Hermes Low-Power Demonstration Reactor is the first of its type to be approved for construction by the U.S. Nuclear Regulatory Commission and the first non-light-water reactor to be permitted in the U.S. in more than 50 years, a press release said. (Image courtesy Kairos Power)

Kairos Power has started construction on a test nuclear reactor in west Oak Ridge.

The Hermes Low-Power Demonstration Reactor is the first of its type to be approved for construction by the U.S. Nuclear Regulatory Commission and the first non-light-water reactor to be permitted in the U.S. in more than 50 years, a press release said.

The NRC approved a construction permit for the test reactor at Heritage Center industrial park, the former K-25 site, in December.

“Hermes represents a critical milestone on Kairos Power’s iterative path to commercializing advanced reactor technology,” the press release said.

Kairos Power said it has contracted with Barnard Construction Company Inc. to perform sitework and excavation at the Hermes site in Oak Ridge, and that work began earlier this month.

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Availability of the draft environmental assessment for off-site depleted uranium manufacturing (DOE/EA-2252)

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The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) announces the availability of a Draft Environmental Assessment (EA) for Off-Site Depleted Uranium Manufacturing, which analyzes the potential impacts associated with depleted uranium manufacturing at facilities located in Oak Ridge, Tennessee and Jonesborough, Tennessee.

NNSA invites the public to review and submit comments on the Draft EA. Copies of the document are available for public review on the NNSA NEPA web page (https://www.energy.gov/nnsa/nnsa-nepa-reading-room) and/or the DOE NEPA web page (https://www.energy.gov/nepa/public-comment-opportunities).

NNSA is providing an approximately 30-day comment period on the Draft EA and public comments should be submitted no later than August 30, 2024. Written comments may be mailed to NNSA NEPA Document Manager, Attn: DU Draft EA, P.O. Box 2050, Oak Ridge, TN 37831 or submitted by email to [email protected]. Comments will not be accepted over the telephone.

Crews preparing for first demolition of uranium enrichment building at Y-12

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A U.S. Department of Energy Oak Ridge Office of Environmental Management crew member works to install one of three bridges to support the relocation of utilities away from the Alpha-2 facility at the Y-12 National Security Complex. Each bridge weighs over 2,000 pounds. (Photo courtesy DOE OREM)

From U.S. Department of Energy “EM Update” email newsletter

U.S. Department of Energy Office of Environmental Management crews at Oak Ridge are moving closer toward completing the first-ever demolition of a former uranium enrichment facility at the Y-12 National Security Complex as crews reroute utilities around the structure.

Workers are slated to begin demolition on the Alpha-2 building this fall. Initiating teardown of the facility is an EM priority for 2024.

The 325,000-square-foot Manhattan Project-era facility is one of nine uranium enrichment process buildings constructed at Y-12. Its removal by the Oak Ridge Office of Environmental Management (OREM) and contractor UCOR will eliminate a high-risk excess contaminated facility, enable modernization, and clear land to support national security missions.

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K-25 cleanup shifting to groundwater

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An aerial view of the East Tennessee Technology Park shows the Main Plant Area left of Poplar Creek and the K-31 and K-33 Area at right. (Photo courtesy U.S. Department of Energy Office of Environmental Management)

Crews are expected to finish remediating soil, reversing or stopping environmental damage at the former K-25 site in west Oak Ridge this year, and federal cleanup managers are shifting their focus to groundwater. It’s the final phase of cleanup at the former uranium enrichment site.

Now also referred to as Heritage Center and East Tennessee Technology Park (ETTP), the K-25 site produced fuel for nuclear weapons and reactors starting in the top-secret Manhattan Project during World War II and continuing through the Cold War. The site has been shut down for almost four decades, and a massive cleanup project has been under way for many years.

The groundwater work can begin with the recent signing of two records of decision between the U.S. Department of Energy’s Oak Ridge Office of Environmental Management, U.S. Environmental Protection Agency, and Tennessee Department of Environment and Conservation. That’s according to “EM Update,” an electronic newsletter published by DOE’s Office of Environmental Management.

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K-25 site has first reunion

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Jim Young was the oldest retiree in attendance at the recent K-25 site reunion. The 101-year-old started working at the K-25 site as a security guard in May 1944. (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management)

From “EM Update” newsletter

Long vacant parking lots at the former K-25 site at Oak Ridge were full again on a recent Saturday afternoon as retired employees gathered for a first-ever reunion.

“There are some folks here that I have not seen since I retired,” said Bob Merriman, who began working at the K-25 site in 1963. “It’s amazing to be able to visit with them and to see them still doing well.”

What started as a plan to host a small picnic quickly turned into much more.

“I said we’ll have it down here at Turtle Park in Oak Ridge, but I think I’m going to open it up to all K-25 workers,” said Pam Toon, an event organizer who started work at the site in 1987. “When I did, massive amounts of people signed up.”

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Crews clean up demolished ORNL reactor

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An aerial view of the site of the Low Intensity Test Reactor after U.S. Department of Energy Office of Environmental Management crews demolished it. Crews have since shipped the reactor vessel and backfilled the pit where the facility had stood. (Photo courtesy UCOR/DOE Oak Ridge Office of Environmental Management)

Workers have finished cleaning up after demolishing the Low Intensity Test Reactor at Oak Ridge National Laboratory.

The work was done by cleanup contractor UCOR for the U.S. Department of Energy Office of Environmental Management.

Workers finished the tearing down the Low Intensity Test Reactor and disposing rubble and debris last fall, achieving a federal environmental management priority that year, according to the U.S. Department of Energy Office of Environmental Management.

“However, the reactor vessel remained on the building’s footprint until it could be shipped for final disposition offsite,” DOE said in its “EM Update” newsletter.

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Almost two miles of pipes replaced at waste treatment systems

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Oak Ridge crews installed approximately 5,500 feet of new piping as part of a project at the Liquid and Gaseous Waste Operations system. The work required 5,000 hours of welding to complete the nearly two miles of welded lines. (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management/UCOR)

Close to two miles of pipes were replaced at waste treatment systems at Oak Ridge National Laboratory.

The two-year, $18 million project was completed three months ahead of schedule and $900,000 under budget, according to federal officials. The project replaced above-ground pipes and valves at the 3608 Process Waste Treatment Complex, “making the system more efficient and reliable and helping avoid the possibility of disrupting ongoing ORNL operations,” federal officials said.

The piping replacement was a project of the U.S. Department of Energy’s Oak Ridge Office of Environmental Management and its contractor UCOR. The goal was to extend the life of the Liquid and Gaseous Waste Operations (LGWO) system at ORNL. DOE said the LGWO system is critical to ORNL’s ongoing missions, and an outage would result in immediate impacts at the site.

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Crews prepare to demolish Graphite Reactor support facilities

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An aerial view of a filter house, fan house, and 200-foot-tall exhaust stack that provided support to the Graphite Reactor, which is located about 100 feet away from these facilities. (Photo courtesy U.S. Department of Energy Office of Environmental Management)

Federal cleanup crews are preparing to demolish three support facilities for the historic Graphite Reactor at Oak Ridge National Laboratory.

The demolition of the support facilities is planned for next year.

The deactivation work at the three facilities is being done by UCOR, a cleanup contractor for the U.S. Department of Energy’s Oak Ridge Office of Environmental Management.

The buildings include the filter house, or Building 3002; fan house, or Building 3003; and exhaust stack, or Building 3018. They were previously used to filter and release exhaust from Graphite Reactor operations.

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ORNL employees, contractor give about $1 million to nonprofits

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Oak Ridge National Laboratory materials clerk Julie Givens talks to ORNL Director Stephen Streiffer at the drop-off for Angel Tree gifts. ){Photo credit: ORNL/U.S. Department of Energy)

Employees of the U.S. Department of Energy’s Oak Ridge National Laboratory donated more than $828,000 to local nonprofits through the lab’s employee giving programs in 2023, a press release said.

ORNL’s managing contractor, UT-Battelle, provided an additional $139,600 in support of employee efforts, bringing the total to more than $967,000.

In addition, ORNL employees recorded more than 1,497 volunteer hours while serving 56 nonprofits, the press release said. With the value of these volunteer hours estimated at $36,232, total employee-led contributions for 2023 were valued at more than $1 million.

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NRC approves construction permit for Hermes reactor

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An image showing the proposed Hermes demonstration reactor by Kairos Power. The test reactor would be built at Heritage Center industrial park in west Oak Ridge. (Image by Kairos Power)

The U.S. Nuclear Regulatory Commission has approved a construction permit for a test reactor at Heritage Center industrial park in west Oak Ridge. The NRC decision was announced Tuesday, and construction could start next year.

The 35-megawatt thermal Hermes demonstration reactor would be built by Kairos Power, which has headquarters in Alameda, California, and a Tennessee operation in Oak Ridge.

Hermes would use molten salt to cool its reactor core. It would not generate electricity. Instead, it would provide operational data to support the development of a larger version for commercial power, the NRC said.

“A critical step on Kairos Power’s iterative pathway to commercializing its advanced reactor technology, the Hermes reactor will demonstrate the company’s ability to deliver clean, safe, and affordable nuclear heat,” the company said in a press release.

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Sholl named interim executive director of UT-Oak Ridge Innovation Institute

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David Sholl will serve as interim executive director of the UT-Oak Ridge Innovation Institute. (Photo credit: Genevieve Martin/ORNL, U.S. Department of Energy)

David Sholl, director of the Transformational Decarbonization Initiative at Oak Ridge National Laboratory, has been appointed interim executive director of the University of Tennessee-Oak Ridge Innovation Institute. His appointment was effective Monday, June 12.

“Sholl’s background, passion, and expertise will ensure continued progress as the institute recruits exemplary joint research faculty, builds its research portfolio, develops students and prepares them to become leaders, and contributes to workforce development in areas important to Tennessee,” a press release said.

“The work UT faculty and students are doing in partnership with ORNL researchers is advancing the frontiers of knowledge and strengthening Tennessee’s leadership role in areas like clean energy, future mobility, advanced materials, and next-generation manufacturing,” said UT Chancellor Donde Plowman. “We look forward to working with David and to leveraging our strategic partnership with ORNL to advance discoveries, learning, and innovations that make life and lives better here in Tennessee and around the world.”

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ORNL scientist to lead project studying permafrost thaw, climate processes in Alaska

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Colleen Iversen (Photo submitted by ORNL)

Submitted

Colleen Iversen—ecosystem ecologist, group leader, and distinguished staff scientist at Oak Ridge National Laboratory—has been named director of the U.S. Department of Energy’s Next-Generation Ecosystem Experiments Arctic, or NGEE Arctic. That is a multi-institutional project studying permafrost thaw and other climate-related processes in Alaska, a press release said.

Iversen has worked as a scientist on NGEE Arctic since 2012 and served as its deputy director from 2021-2023. She also leads a research team in the Plant-Soil Interactions Group at ORNL. Iversen succeeds Stan Wullschleger, founding director of NGEE Arctic, who retired as associate laboratory director for Biological and Environmental Systems Science at ORNL in April 2023.

Iversen, who took on the role of director and principal investigator for NGEE Arctic earlier this year, is excited about taking the reins of such a large, multidisciplinary project, the press release said.

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