Oak Ridge Today

Lithium Processing Facility at Y-12 could cost up to $1.65 billion

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Federal officials have approved the need for a new Lithium Production Facility at the Y-12 National Security Complex, and in May 2018, they said it could be built on the east side of the 811-acre plant, possibly where the Biology Complex, the brick building at center, is now. The east side of Y-12 is pictured above from Scarboro Road on Sunday, May 20, 2018. (File photo by John Huotari/Oak Ridge Today)

The proposed Lithium Processing Facility at the Y-12 National Security Complex could cost between $955 million and $1.65 billion, and it could be completed in 2031, the National Nuclear Security Administration said Thursday.

The Lithium Processing Facility could be built where the former Biology Complex is located on the east side of Y-12. That’s the NNSA’s preferred site. The Biology Complex is being prepared for demolition by the U.S. Department of Energy’s Office of Environmental Management.

On Thursday, the NNSA, which is part of the U.S. Department of Energy, said it had approved the conceptual design and cost range for the proposed 134,000-square-foot Lithium Processing Facility.

The facility will replace Y-12’s current lithium processing operations, which are located in a World War II-era building. That building, Building 9204-2, or Beta 2, has had materials fall from the ceiling, including chunks of concrete that reportedly weighed up to 200 pounds. The falling materials and concerns about worker safety have been cited by federal officials during congressional hearings in Washington, D.C.

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Crews start work for Mercury Treatment Facility at Y-12

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Workers remove asphalt on the east end of the Y-12 National Security Complex, where the Mercury Treatment Facility treatment plant will be built. (Photo courtesy U.S. Department of Energy Oak Ridge Office of Environmental Management)

Work began in June to build the Mercury Treatment Facility at the Y-12 National Security Complex.

The Mercury Treatment Facility will allow the U.S. Department of Energy to clean up and demolish several large Y-12 buildings that used mercury to separate lithium for nuclear weapons during the Cold War in the 1950s and 1960s. The facility is expected to help reduce the amount of mercury in East Fork Poplar Creek, which flows through Oak Ridge.

DOE announced in December that it had awarded a $91 million contract to build the Mercury Treatment Facility. The contract, which could be in place for up to four years, was awarded to APTIM-North Wind Construction JV LLC.

A groundbreaking was held at the site in November 2017, and site preparations were completed by December 2018.

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Crews finish preparing site for Mercury Treatment Facility at Y-12

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Site preparation crews constructed two secant pile retaining walls to retain soils, control water seepage, and provide a deep, secure foundation for the water intake structure at the new Mercury Treatment Facility at Y-12 National Security Complex. (Photo via DOE's EM Update on Tuesday, Dec. 11, 2018)

Site preparation crews constructed two secant pile retaining walls to retain soils, control water seepage, and provide a deep, secure foundation for the water intake structure at the new Mercury Treatment Facility at Y-12 National Security Complex. (Photo via DOE’s EM Update on Tuesday, Dec. 11, 2018)

 

The U.S. Department of Energy announced Tuesday that it has completed the site preparations for the construction of the Mercury Treatment Facility at the Y-12 National Security Complex.

The Mercury Treatment Facility will allow DOE to clean up and demolish several large Y-12 buildings that used mercury to separate lithium for use in nuclear weapons during the Cold War (in the 1950s and 1960s). It’s part of a large-scale cleanup and demolition project at Y-12 and an effort to reduce the amount of mercury in East Fork Poplar Creek, which flows through Oak Ridge.

DOE announced on Tuesday, December 4, that it had awarded a $91 million contract to build the Mercury Treatment Facility at Y-12. The contract, which could be in place for up to four years, was awarded to APTIM-North Wind Construction JV LLC.

DOE said early site preparation activities were started by other contractors in December 2017. A groundbreaking was held at the site in November 2017, and UCOR, DOE’s lead cleanup contractor in Oak Ridge, began work at the treatment facility site with a subcontractor after the groundbreaking, the DOE Oak Ridge Office of Environmental Management said in a story published Tuesday in an EM Update.

The Mercury Treatment Facility will have two components: a headworks facility and a treatment plant connected by a pipeline. The headworks facility will capture creek flow on the west end of Y-12, store excess stormwater collected during large rainfalls, remove grit, and pump water through the pipeline to the treatment plant on the east side of Y-12. The treated water will then flow into East Fork Poplar Creek. [Read more…]

DNFSB: Moving fissile materials, operations from Y-12 building improves nuclear safety, reduces risk

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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)

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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Construction on Y-12 mercury treatment plant could start in 2018, cost $146 million

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Y-12 Process Buildings and Mercury Use Area

Note: This story was last updated at 3:30 p.m.

Construction on a mercury treatment plant at the Y-12 National Security Complex could start in 2018 and cost $146 million, a federal official said Wednesday.

The plant would treat mercury contamination that originates in the West End Mercury Area at Y-12, flows through storm drains, and enters Upper East Fork Poplar Creek at a point known as Outfall 200. East Fork Poplar Creek flows through Oak Ridge.

The U.S. Department of Energy has evaluated several alternatives for treating the mercury, including doing nothing. But DOE prefers an option that would treat 3,000 gallons of contaminated water per minute and store two million gallons of stormwater. It could reduce the flow of mercury, a toxic metal, by an estimated 84 percent. [Read more…]

Y-12 neutron detector wins R&D 100 Award

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Y-12 Neutron Detector

Ashley Stowe, Y‑12 senior development chemist, working with Fisk University, developed a single-crystalline device that will be used in handheld nuclear nonproliferation and homeland security applications. (Submitted photo)

A Y-12 nuclear nonproliferation technology offering significant possibilities in the homeland security field was among those listed on the R&D Magazine 51st Annual R&D 100 Awards. The honor salutes the 100 most technologically significant products introduced into the marketplace during the past year.

The LISeTM, a high-efficiency thermal neutron detector based on the 6LiInSe2 crystal, is the first large, single-crystal semiconductor of high resistivity that contains lithium and directly detects thermal neutrons with high efficiency. The single-crystalline device will be used in handheld nuclear nonproliferation and homeland security applications to find fissile materials. Its simpler, more compact design, and higher efficiency are key improvements that will appeal to users. [Read more…]

Cleanup work shifts to mercury as new Y-12 water treatment plant announced

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Y-12 Water Treatment Plant Announcement

State and federal officials announce a plant to treat mercury-contaminated water at the Y-12 National Security Complex. Pictured from left are Mark Whitney, Robert Martineau, Lamar Alexander, Dave Huizenga, and Stan Meiburg.

Cleanup work in Oak Ridge could shift from radiological contamination to mercury contamination, and a new $120 million water treatment plant at the Y-12 National Security Complex will help reduce mercury as workers tear down four contaminated buildings that were used to make nuclear weapons in the 1950s and 1960s, officials announced Friday.

“This water treatment plant is a major step in addressing one of the biggest problems we have from the Cold War era—mercury once used to make nuclear weapons getting into our waterways,” said U.S. Sen. Lamar Alexander, a Tennessee Republican. He said mercury contamination can cause brain and nervous system damage in people who eat contaminated fish.

Alexander was at Y-12 on Friday along with other federal and state officials to help announce the new water treatment plant, which will be at the head of East Fork Poplar Creek on the south side of Y-12’s main production area. The plant would be connected to a Y-12 storm water system, and it could begin operating in 2019. It would be able to treat 1,500 gallons of mercury-contaminated water per minute. [Read more…]

Five mercury cleanup projects wrapped up in February

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Mercury-contaminated Tank Cleanup

Workers load a mercury-contaminated tank onto inspection saddles. (Image courtesy of U.S. Department of Energy/UCOR)

Five mercury projects being performed under the American Recovery and Reinvestment Act were completed in February, with URS-CH2M Oak Ridge LLC, or UCOR, issuing the final reports.

The projects ranged from planning new facilities and planning for cost-effective disposition of mercury-contaminated media, to removing old, abandoned tanks containing mercury. All are part of getting ready for an upcoming major focus on mercury cleanup at the Y-12 National Security Complex.

In the area of Y-12 known as the West End Mercury Area, or WEMA, multiple facilities produced a lithium isotope fundamental to the development of the hydrogen weapon. Mercury was used in that process. In those facilities, various amounts of mercury are present in the process pipes and equipment, drains and sumps, soil surrounding the facilities, storm sewers, and stream sediments.

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