Oak Ridge Today

DOE, UCOR demolish last piece of K-25, once the world’s largest building

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K-25 Building Demolition Final

The last section of the former K-25 Building in west Oak Ridge was demolished on Thursday.

It was once the world’s largest building under one roof, built by the U.S. government in less than two years as part of a top-secret race to build the world’s first atomic bombs during World War II.

Officials say it also helped win the Cold War.

But five years after demolition started, the K-25 Building is gone. Officials, workers, and invited guests watched the last section of the giant building crash to the ground on Thursday.

The mile-long, U-shaped K-25 Building enriched uranium through a process called gaseous diffusion. It was the largest facility in the U.S. Department of Energy complex. Debris shipments are expected to be completed in the spring of 2014.

The $1.1 billion project is under budget and ahead of schedule. [Read more…]

Once the world’s largest, K-25 Building will be completely demolished Thursday

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K-25 Demolition December 2013

Demolition work on the former uranium-enriching K-25 Building in west Oak Ridge is expected to be completed Thursday. (Photo courtesy U.S. Department of Energy/Lynn Freeny)

It was once the world’s largest building under one roof, but on Thursday, federal officials expect to complete demolition work at the K-25 Building in west Oak Ridge.

K-25 was built during World War II to enrich uranium for the world’s first atomic bombs as part of the top-secret Manhattan Project. After the war, it enriched uranium for nuclear weapons and commercial nuclear power plants.

But the site shut down in the mid-1980s, and demolition work on the K-25 Building started five years ago, in December 2008, under former cleanup contractor Bechtel Jacobs.

Officials and workers expect to tear down the last remaining piece of K-25 starting at about 11 a.m. Thursday. They have invited media to attend to witness the historic event. [Read more…]

Activists ask federal officials to build UPF underground at Y-12

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Uranium Processing Facility

Pictured above is the proposed Uranium Processing Facility at Y-12 National Security Complex, with the administrative area in the front and the fortified section of the building in the rear. (Submitted image)

The proposed multi-billion-dollar building that would process uranium at the Y-12 National Security Complex should be buried below ground, an Oak Ridge nonprofit organization and a Washington, D.C.-based group told federal safety officials in a Monday letter.

The groups planned to make their request during an all-day meeting and public hearing of the Defense Nuclear Facilities Safety Board in Knoxville on Tuesday. The board is meeting in two sessions from 8 a.m. to noon and 2 to 6 p.m. today (Tuesday) at the Knoxville Convention Center.

The Monday letter was from the Alliance for Nuclear Accountability in Washington, D.C. Among the dozen signatories is Ralph Hutchison, coordinator of the Oak Ridge Environmental Peace Alliance, a group that has long been critical of the nuclear weapons work at Y-12. OREPA said the letter’s signatories represent thousands of members at sites across the country. [Read more…]

Federal safety board to discuss Y-12 nuclear safety

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Y-12 National Security Complex Sign

A federal board meeting on nuclear safety at the Y-12 National Security Complex has been rescheduled for Dec. 10.

A federal board meeting on nuclear safety at the Y-12 National Security Complex has been rescheduled for Dec. 10.

The day-long public meeting and hearing of the Defense Nuclear Facilities Safety Board had originally been scheduled for Oct. 22. But it was postponed because of the partial federal government shutdown that started Oct. 1 and ended Oct. 17.

The board will still meet at the Knoxville Convention Center, and the meeting will still include two sessions. The first is from 8 a.m. to 12 p.m. Tuesday, Dec. 10, and the second is from 2 to 6 p.m. [Read more…]

K-25 Building demolition nears completion

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K-25 Building Demolition

Workers continue demolishing and hauling away debris at the K-25 Building. (Photo courtesy U.S. Department of Energy/UCOR)

Demolition of the last standing section of the K-25 Building at the East Tennessee Technology Park is more than 75 percent complete.

UCOR workers began tearing down the last six units in the east wing of the mile-long Manhattan Project-era gaseous diffusion building in September. The majority of those six units—4.5 of them—are already on the ground, and work is continuing at a steady pace, the U.S. Department of Energy Oak Ridge Office reported in the December issue of Public Involvement News.

The entire project, including waste removal, should be completed next year, the Oak Ridge Office said.

The historic, U-shaped K-25 Building was erected to enrich uranium for atomic bombs during World War II, and it was once the world’s largest building under one roof. It once had 54 units. [Read more…]

U.S., international partners remove last weapons-grade uranium from Hungary

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Highly Enriched Uranium Removed from Hungary

The U.S. Department of Energy announced Monday that all remaining highly enriched uranium has been removed from Hungary. (Photos courtesy National Nuclear Security Administration)

Note: This story was updated at 6:23 a.m. Nov. 6.

WASHINGTON, D.C.—The U.S. Department of Energy announced Monday that all remaining highly enriched uranium has been removed from Hungary.

There was enough material removed in the multi-year international effort to fuel nine nuclear weapons, DOE said in a press release.

The removal of the highly enriched uranium, or HEU, was coordinated between Hungary, the United States, the Russian Federation, and the International Atomic Energy Agency, or IAEA.

Hungary is the 12th country to completely eliminate HEU since President Barack Obama announced an international effort in 2009 to secure all vulnerable nuclear material around the world, the release said. [Read more…]

More than 20,000 loads of debris hauled away from K-25 demolition

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K-25 Building Demolition Progress November 2013

Demolition of the K-25 Building’s remaining section continues as the contractor performing the work hit a waste disposal milestone last month. (Photos courtesy DOE Oak Ridge Office/Public Involvement News)

Demolition of the K-25 Building’s remaining section continues as the contractor performing the work hit a waste disposal milestone last month, officials said.

UCOR, a partnership between URS and CH2M Oak Ridge LLC, has safely shipped more than 20,000 loads of demolition debris from the K-25 project, according to the November 2013 issue of Public Involvement News, published by the U.S. Department of Energy’s Oak Ridge Office.

Most of the debris is being disposed at the Environmental Management Waste Management Facility near the Y-12 National Security Complex.

“Demolition continues at a steady pace, with the project expected to be completed next year,” the monthly newsletter said. [Read more…]

On Senate floor, Alexander honors nuclear workers, Bill Wilcox, Calutron Girls

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U.S. Senator Lamar Alexander

Lamar Alexander

Sen. Lamar Alexander spoke on the floor of the U.S. Senate on Wednesday in honor of nuclear weapons program workers. Among those he honored were Bill Wilcox and the Calutron Girls.

Wilcox was a Manhattan Project veteran, former technical director at the K-25 site and Y-12 National Security Complex, and Oak Ridge city historian.

Wednesday was the fifth annual National Day of Remembrance for nuclear weapons program workers. It had been recognized under a resolution that Alexander cosponsored earlier this year.

Here are the senator’s full remarks: [Read more…]

Demolition begins on last section of historic K-25 Building

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K-25 East Wing Demolition

Workers begin demolishing the last section of the K-25 building on Tuesday. K-25 was built to enrich uranium for atomic bombs during World War II and was once the world’s largest building under one roof, but it’s been unused for decades. (Photo courtesy U.S. Department of Energy/UCOR)

Demolition work began Tuesday on the last section of the historic K-25 Building, which was erected to enrich uranium for atomic bombs during World War II and was once the world’s largest building under one roof.

Most of the building, which is in west Oak Ridge, has already been demolished. Only a small section of the east wing remains at the former mile-long, U-shaped building.

K-25 was built during the top-secret Manhattan Project in World War II to enrich uranium for nuclear weapons through a process known as gaseous diffusion. Those operations ended in 1964. [Read more…]

Y-12 protesters work to change nuclear policy, prevent another Hiroshima

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OREPA Peace Cranes at Y-12

Sharon O’Hara-Bruce of Lake Orion, Mich., ties a peace crane to a fence set up in front of the Y-12 National Security during a Tuesday morning ceremony recalling the bombing of Hiroshima, Japan, on Aug. 6, 1945, near the end of World War II.

A few dozen demonstrators from across the eastern United States gathered near the Y-12 National Security Complex on Tuesday morning to remember the bombing of Hiroshima, Japan, near the end of World War II 68 years ago.

Some traveled hundreds of miles by bicycle and car to get to Oak Ridge, where they questioned the nation’s current energy policy and preparations for nuclear war. Four riders arrived after a 458-mile, nine-day “Bikes Not Bombs” trip from Cincinnati to Oak Ridge.

“It’s consciousness-raising and concern for the priorities of our society,” said Tim Kraus of Cincinnati, part of the support group for the “Bikes Not Bombs” trip, which was organized by Footprints for Peace. “What we’re doing is not sustainable.” [Read more…]

DOE’s public bus tour begins Monday

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The U.S. Department of Energy’s 2013 Oak Ridge facilities public bus tour begins June 3 and continues through Aug. 30. The tour offers visitors a first-hand look at the DOE’s Oak Ridge facilities and provides historical commentary on the transformation of the Oak Ridge Reservation during the past 70 years.

The reservation-wide tour is a popular destination for tourists visiting the area. Since its inception in 1996, the DOE public tour program has attracted more than 29,000 visitors from all 50 states. The three-hour tour allows visitors to see the reservation and learn historical facts and updates on the world-class missions under way in Oak Ridge. [Read more…]

Microwaves could melt uranium at UPF, help remove carbon impurities

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Y-12 Microwave Crucible

A microwave operator handles the crucible that holds the material as it is melted. Microwave technology is the preferred method for melting materials because of the ease of removing carbon impurities from the metal. (Photos courtesy B&W Y-12)

New microwaves that can melt metal and help remove carbon impurities from uranium could be used in the proposed Uranium Processing Facility at the Y-12 National Security Complex.

Y-12 doesn’t plan to use any of its traditional ovens, known as vacuum induction melters, or VIMs, in the UPF, officials said. Those ovens use electric currents and a magnetic field to melt metal.

But it’s easier to “float out” carbon impurities in microwaves because they don’t stir molten metals the way the traditional ovens do, Y-12 officials said. Carbon contaminants in uranium castings could be reduced by 30 percent.

Y-12 melts and casts uranium to combine it into hollow cylinders for storage, make parts for the nation’s nuclear weapons stockpile, and supply nuclear fuel for the U.S. Navy. Microwaves could eventually be used for all three tasks. [Read more…]