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
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.
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.
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.
Depleted uranium hexafluoride storage cylinders at the U.S. Department of Energy’s Portsmouth, Ohio, Conversion Facility. (Photo from U.S. Government Accountability Office report)
The U.S. Department of Energy estimates it could cost at least $7.2 billion to convert and dispose of tens of thousands of cylinders of depleted uranium hexafluoride, a dangerous, corrosive waste byproduct of the uranium enrichment process. Some of the waste came from the former K-25 site in Oak Ridge and is now stored in Ohio, but a portion of the converted depleted uranium could eventually be returned to Oak Ridge for use in nuclear weapons.
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Depleted uranium hexafluoride storage cylinders at the U.S. Department of Energy’s Portsmouth, Ohio, Conversion Facility. (Photo from U.S. Government Accountability Office report)
The U.S. Department of Energy estimates it could cost at least $7.2 billion to convert and dispose of tens of thousands of cylinders of depleted uranium hexafluoride, a dangerous, corrosive waste byproduct of the uranium enrichment process. Some of the waste came from the former K-25 site in Oak Ridge and is now stored in Ohio, but a portion of the converted depleted uranium could eventually be returned to Oak Ridge for use in nuclear weapons.
DOE’s Office of Environmental Management has had about 67,000 cylinders of the depleted uranium hexafluoride (DUF6) stored at two conversion facilities in Paducah, Kentucky, and Portsmouth, Ohio. The facilities convert the DUF6 into two primary products, depleted uranium oxide (a more stable chemical form) and hydrofluoric acid, according to a report by the U.S. Government Accountability Office.
Depleted uranium hexafluoride storage cylinders at the U.S. Department of Energy’s Portsmouth, Ohio, Conversion Facility. (Photo from U.S. Government Accountability Office report)
The U.S. Department of Energy estimates it could cost at least $7.2 billion to convert and dispose of tens of thousands of cylinders of depleted uranium hexafluoride, a dangerous, corrosive waste byproduct of the uranium enrichment process. Some of the waste came from the former K-25 site in Oak Ridge and is now stored in Ohio, but a portion of the converted depleted uranium could eventually be returned to Oak Ridge for use in nuclear weapons.
The rest of this story is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.
Artist rendering 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 David Brown)
Note: This story was updated at 9 a.m. Feb. 4.
Two federal agencies have agreed to build a K-25 Viewing Platform at the historic site in west Oak Ridge that was used to enrich uranium for nuclear weapons and nuclear power plants during World War II and the Cold War. The design is expected to be complete in March and the building completed by the end of 2023.
The construction agreement for the viewing building at the former K-25 site was signed by the U.S. Department of Energy’s Oak Ridge Office of Environmental Management and U.S. Army Corps of Engineers.
The viewing platform will give visitors a view of the large 44-acre footprint of the former K-25 Building. K-25, which was the world’s largest building, was erected during World War II as part of the Manhattan Project to help enrich uranium for the world’s first atomic bombs during World War II. The K-25 Building was demolished in 2013, and many other structures at the site have been removed as the federal government turns over property for private development.
The K-25 Building site itself is now part of the Manhattan Project National Historical Park. That project commemorates the workers, equipment, and processes used during the Manhattan Project in Oak Ridge, Tennessee; Hanford, Washington; and Los Alamos, New Mexico.
The K-25 Viewing Platform and associated exhibits are the final components of a multi-project agreement that the Oak Ridge Office of Environmental Management signed in 2012, clearing the way for demolition of the North Tower of the mile-long, U-shaped K-25 Building. The projects commemorate the history of the K-25 site, which has also been known as the Oak Ridge Gaseous Diffusion Plant.
East Tennessee Technology Park, the former K-25 site, is pictured above in west Oak Ridge after most cleanup work, including demolition of the five large gaseous diffusion buildings, was completed. (Submitted photo)
The Oak Ridge team that mostly cleaned up the former K-25 site, demolishing five large gaseous diffusion buildings and more than 500 structures, has received a Secretary’s Achievement Award from U.S. Energy Secretary Jennifer Granholm. The work was done ahead of schedule and under budget, the U.S. Department of Energy said.
Granholm honored the DOE Office of Environmental Management team from Oak Ridge in a virtual ceremony Wednesday, a press release said.
K-25 was used to enrich uranium for nuclear weapons and commercial nuclear power plants from World War II to the 1980s.
It was the first removal of a uranium enrichment complex, and it cleared 13 million square feet of deteriorated, contaminated structures from the site, the press release said.
“The Secretary’s Achievement Award honors a group or team of DOE employees and contractors who accomplish significant achievements on behalf of the department, demonstrating cooperation and teamwork in attaining their goals,” the press release said. “The award was given to the Oak Ridge Vision 2020 Project Team based on its achievements from 2020.”
K-25 History Center (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management)
The K-25 History Center in west Oak Ridge will feature exhibits with more than 250 original artifacts and interactive galleries developed with help from almost 1,000 oral histories.
There will be a grand opening and ribbon-cutting ceremony for the K-25 History Center at 10:30 a.m. Thursday, February 27.
“The K-25 History Center was created to honor the amazing stories of the men and women who helped construct and operate the uranium enrichment complex that altered the global landscape during the Manhattan Project and Cold War,” the U.S. Department of Energy said.
The History Center is housed in 7,500 square feet of space on the second floor of the city-owned fire station at the former K-25 site, now known as Heritage Center. It was developed as part of a 2012 agreement that allowed DOE to demolish the North Tower of the former mile-long, U-shaped K-25 Building.
The K-25 History Center will have a grand opening ceremony on Thursday, February 27.
The ceremony, which will include a ribbon-cutting, is scheduled for 10:30 a.m. Thursday, February 27, at 652 Enrichment Street in west Oak Ridge.
The K-25 site, now known as Heritage Center, was built during World War II to help enrich uranium for the top-secret Manhattan Project, a federal program to build the world’s first atomic bombs. K-25 helped enrich uranium for “Little Boy,” a nuclear weapon dropped over Hiroshima, Japan, on August 6, 1945, shortly before the end of World War II.
After the war, K-25 enriched uranium for nuclear weapons and commercial nuclear power plants through the Cold War. The site was shut down in the mid-1980s, and it is being cleaned up and converted into a private industrial park. The site’s large uranium enrichment buildings have been demolished and so have many of the support buildings. Most of the cleanup is expected to be completed this year.
Demolition work has started on the Centrifuge Complex at the front side of the East Tennessee Technology Park, the former K-25 site in west Oak Ridge. The work is part of the project to finish cleanup at ETTP by the end of 2020. (Photo courtesy U.S. Department of Energy Office of Environmental Management)
The largest and most visible buildings remaining at the East Tennessee Technology Park are being removed.
Demolition is under way on the Centrifuge Complex, according to the “EM Update” newsletter published last week by the U.S. Department of Energy Office of Environmental Management.
The demolition work is part of the project to finish cleanup at ETTP, the former K-25 site in west Oak Ridge, by the end of 2020. One of the three main sites in Oak Ridge, K-25 was built as part of the Manhattan Project, the top-secret federal program to build atomic weapons during World War II. The site continued to enrich uranium for nuclear weapons and commercial nuclear power plants through the Cold War. Its operations ended in the mid-1980s, and the site is now being converted into a private industrial park.
The Centrifuge Complex has more than 235,000 square feet, and sections of it reach heights of 180 feet. It was built in stages to develop and test centrifuge uranium enrichment technology, the “EM Update” said. The last of these facilities ceased operation in the mid-1980s.
Building 9204-2 (Beta 2) is pictured above at center at the Y-12 National Security Complex. Part of Building 9204-2E (Beta 2E) is pictured in the top left. (Photo courtesy Consolidated Nuclear Security)
Building 9204-2 (Beta 2) is pictured above at center at the Y-12 National Security Complex. Part of Building 9204-2E (Beta 2E) is pictured in the top left. (Photo courtesy Consolidated Nuclear Security)
Nuclear materials and operations have been removed from an old building at the Y-12 National Security Complex, and that improves safety and reduces the risk to workers and the public, a federal safety board said.
The building, 9204-2, or Beta 2, is on the west side of Y-12. It’s one of nine buildings at the 811-acre site that once used machines known as calutrons to enrich uranium for atomic bombs as part of the top-secret Manhattan Project during World War II. It’s now used to produce lithium for nuclear weapons.
In an early September report, the Defense Nuclear Facilities Safety Board said Consolidated Nuclear Security and the National Nuclear Security Administration Production Office had officially downgraded Building 9204-2. It had been a category two hazard, but it is now less than category three. It’s considered non-nuclear.
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The K-25 “footprint,” the area where the K-25 Building used to be in west Oak Ridge, is pictured above at the East Tennessee Technology Park in west Oak Ridge. The white K-1600 Building is pictured in the middle of the “footprint.” The brick building in the foreground is Oak Ridge Fire Station No. 4, and it includes the K-25 History Center. (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management)
Centrus Energy Corporation has a $15 million project to prepare K-1600, a building in the middle of the historic K-25 “footprint,” for demolition.
On Tuesday, Centrus announced that it had received a work authorization from the U.S. Department of Energy for decontamination and decommissioning (D&D) work at the building. The work will include removing and disposing of equipment and materials to make K-1600 non-radiologically contaminated and non-possessing (i.e. unclassified), a press release said. The work will occur between October 1, 2018, and September 30, 2019.
After the work is completed, DOE will be able to turn over K-1600 to a contractor to demolish it, the press release said. It’s one of the last remaining “legacy structures” on the 2,200-acre site of the World War II-era K-25 uranium enrichment plant, now known as the East Tennessee Technology Park, the press release said.
Many other buildings have been demolished there, including the five large gaseous diffusion buildings once used to enrich uranium for atomic weapons and commercial nuclear power plants. ETTP is now being converted into a large industrial park in west Oak Ridge. [Read more…]
Image courtesy National Nuclear Security Administration. SRS is the Savannah River Site.
About 20 metric tons of highly enriched uranium could be “down-blended” to low-enriched uranium and transferred to the Tennessee Valley Authority for use as a fuel to produce tritium for nuclear weapons, according to a public notice published in the Federal Register this week.
The project involves the Y-12 National Security Complex in Oak Ridge and Watts Bar Nuclear Plant near Spring City in Rhea County, among other sites.
The National Nuclear Security Administration and TVA announced in August that they intend to enter into an agreement to “down-blend†highly enriched uranium to low-enriched uranium in order to help produce tritium, a key “boosting†component in nuclear weapons.
The highly enriched uranium used for the “down-blending†will be processed, packaged, and shipped from Y-12, according to the NNSA. Y-12 is an NNSA site, and it is the main storage facility for certain categories of highly enriched uranium. [Read more…]
