Oak Ridge Today

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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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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Crews prepare Y-12 building for demolition by removing asbestos, water

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Built in 1944, Beta-1 is a former Manhattan Project era enrichment facility at the Y-12 National Security Complex. The Oak Ridge Office of Environmental Management expects to demolish the 210,000-square-foot facility in 2026. (Photo courtesy Y-12/UCOR)

Workers have finished major pre-demolition work on a wartime building at Y-12 National Security Complex.

The deactivation work at the Beta-1 building included removing asbestos; old, brittle thorium-contaminated piping; and more than two million gallons of water.

The Oak Ridge Office of Environmental Management and its contractor UCOR have been working toward the deactivation milestone since 2020, a press release said. Workers finished deactivating the above-ground floors of the Beta-1 facility in December. Now, only deactivation work in the basement remains before the teardown can begin. Demolition of Beta-1 is expected to begin in 2026.

Beta-1 was built in 1944 to enrich uranium for the top-secret Manhattan Project during World War II. That federal project built the world’s first atomic bombs. Beta-1, a 210,000-square-foot, two-story building, was later converted to laboratory space for fusion-energy technology.

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Contract awarded for K-25 Viewing Platform

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Artist rendering of the exterior of the new Viewing Platform, which will be located next to the recently constructed K-25 History Center overlooking the footprint of the K-25 Building. (Artist renderings by Smee + Busby Architects)

The U.S. Army Corps of Engineers has awarded Geiger Brothers a $9.9 million contract to build the K-25 Viewing Platform at the East Tennessee Technology Park in Oak Ridge. The Viewing Platform will help commemorate what was once the world’s largest building and part of the Manhattan Project, a top-secret federal program to build the world’s first atomic weapons during World War II. The site enriched uranium for nuclear weapons and nuclear power plants through the Cold War.

The K-25 Viewing Platform will be next to the K-25 History Center, which opened about three years ago. It will give visitors a complete view of the former building’s massive 44-acre footprint.

While the K-25 History Center focuses on the men and women who built and operated the Oak Ridge Diffusion Plant during the Manhattan Project and Cold War, this facility will help visitors understand the scope and magnitude of the former K-25 Building, a press release said.

The U-shaped K-25 Building was a mile long. It was demolished in 2013.

Construction on the Viewing Platform is scheduled to begin in May 2023, and it is expected to be complete in late 2024, the press release said.

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Eight new members join DOE’s environmental advisory board

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The Oak Ridge Site Specific Advisory Board (ORSSAB) welcomed eight new members during the board’s February monthly meeting in Oak Ridge. From left (front), Bonnie Shoemaker, Leon Shields, Michelle Lohmann, and Harriett McCurdy; from left (back), Tom Tuck, Mary Butler, Atilio Anzellotti, Christine Michaels, Noah Keebler, Mike Mark, Harold Conner, Jr., Rosario Gonzalez, Roger Petrie, Paul Dill, Melyssa Noe and Kristof Czartoryski. (Submitted photo)

The U.S. Department of Energy recently welcomed eight new members to its Oak Ridge Office of Environmental Management citizen advisory board.

The Oak Ridge Site Specific Advisory Board is a federally chartered citizens’ panel that provides independent recommendations to OREM, which is responsible for the cleanup of the Oak Ridge Reservation.

“ORSSAB is a core element of our outreach and engagement with the community,” said OREM Manager Jay Mullis. “We’re very grateful to have area residents who are willing to invest their time and energy to learn more about our work, share their perspectives, and provide recommendations. Their insight and feedback greatly benefit our cleanup program.”

All board members are volunteers from the region and have a variety of backgrounds.

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UCOR announces management change

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Tom Dieter

United Cleanup Oak Ridge LLC, the lead cleanup contractor at federal sites in Oak Ridge, has announced a top management change that will be effective April 1.

UCOR Chief Operating Officer Tom Dieter has announced he will retire March 31, and Kent Fortenberry has been appointed to take his place.

In a press release, UCOR said Dieter has had a 30-year career, and during that time, he has earned a national reputation, leading more than $3 billion in cleanup successes in complex nuclear enterprises in several states.

“Tom led UCOR’s transition for our 10-year, $8.3 billion Oak Ridge Reservation cleanup contract, and we’re grateful for his leadership in the company maintaining a strong safety performance in our first year,” said UCOR President and Chief Executive Officer Ken Rueter.

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DOE has open house about landfill on Thursday

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There will be an open house in Oak Ridge on Thursday to discuss the proposed new federal landfill in Bear Creek Valley, west of the Y-12 National Security Complex.

The open house is scheduled from 5 to 7 p.m. Thursday, December 8, in the Scarboro Community Center.

“After much work and coordination with the U.S. Environmental Protection Agency and Tennessee Department of Environment and Conservation, we are excited to share that the three parties recently signed the final Record of Decision (ROD) for the Environmental Management Disposal Facility (EMDF) project,” the U.S. Department of Energy’s Oak Ridge Office of Environmental Management said in a notice posted on its website.

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Crews demolish ORNL reactor once used for aircraft nuclear propulsion research

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Demolition began in September 2022 on the Bulk Shielding Reactor at the Oak Ridge National Laboratory, and it was completed in November. It was the first teardown of a former reactor at the site. (Photo by U.S. Department of Energy Office of Environmental Management)

Workers have demolished a nuclear reactor that was built at Oak Ridge National Laboratory in the 1950s for studies that were part of the federal aircraft nuclear propulsion program.

It’s the first demolition of a reactor in the ORNL central campus area. The demolition was reported to be completed ahead of schedule.

The Bulk Shielding Reactor, also known as Building 3010, was built in the 1950s for radiation shielding studies as part of the federal aircraft nuclear propulsion program. It included a 27-foot-deep reactor pool filled with water to shield the radioactive components contained in the pool, according to the U.S. Department of Energy Office of Environmental Management. Its mission changed to a general-purpose research reactor in 1963, and it was shut down permanently in 1991.

The reactor was demolished by cleanup contractor UCOR, working for DOE’s Oak Ridge Office of Environmental Management (OREM).

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Crews prepare former ORNL reactors for demolition

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An aerial view of the central campus area at Oak Ridge National Laboratory that the Oak Ridge Office of Environmental Management will be transforming in the months ahead. Demolition is scheduled to begin on Building 3010 (front right) this fall followed by Building 3005 (back right) later this year. Crews are also conducting cleanup projects in Building 3042 (left). (Photo courtesy U.S. Department of Energy Office of Environmental Management)

The U.S. Department of Energy and cleanup contractor UCOR are preparing to demolish research reactor facilities at Oak Ridge National Laboratory.

Crews are nearing the final stages of deactivation inside two former research reactor facilities: the Bulk Shielding Reactor, known as Building 3010, and the Low Intensity Test Reactor, known as Building 3005, according to a newsletter published by DOE’s Office of Environmental Management. They are also beginning efforts at the Oak Ridge Research Reactor, known as Building 3042.

The work is overseen by DOE’s Oak Ridge Office of Environmental Management, or OREM.

These structures are located in the heart of ORNL, and their demolition will eliminate risks, clear land for research missions, and enhance access to a component of the Manhattan Project National Historical Park, the department said.

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DOE, UCOR to highlight ETTP transformation, opportunities

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An artist’s rendering of what the redeveloped East Tennessee Technology Park could look like. (Image provided by U.S. Department of Energy Oak Ridge Office of Environmental Management)

The U.S. Department of Energy and its contractor UCOR will highlight the transformation of the East Tennessee Technology Park (the former K-25 site) and discuss the economic opportunities there during a virtual event on Thursday.

The hour-long presentation is free and open to the public, and it is scheduled to start at 9:30 a.m. Thursday.

“Leadership from both organizations will share the final steps required to complete environmental cleanup activities at the former uranium enrichment complex and transition the site to private ownership, a process known as reindustrialization,” a press release said. “The event also includes a panel discussion with partners who helped create the vision and blueprint for this ambitious conversion.”

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DOE makes upgrades to Molten Salt Reactor Experiment

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An aerial view of the Molten Salt Reactor Experiment. The facility was shut down in 1973, and the Oak Ridge Office of Environmental Management is responsible for keeping it in a safe mode until its demolition is scheduled. (Photo courtesy DOE EM)

The U.S. Department of Energy is upgrading a historic reactor in Oak Ridge to keep the facility safe until it can be demolished.

The reactor, the Molten Salt Reactor Experiment, is at Oak Ridge National Laboratory, and it was shut down nearly 50 years ago. At some point, the MSRE will be deactivated, and that will save about $5 million in annual operating costs, a press release said.

The work is being overseen by the DOE Oak Ridge Office of Environmental Management.

“We have the important responsibility of keeping it safe until major cleanup operations begin,” said Nathan Felosi, EM’s ORNL portfolio federal project director. “The latest round of projects is making sure that’s the case and achieving considerable cost savings to taxpayers.”

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