COLEX Archives - Oak Ridge Today

Mercury cleanup: COLEX equipment deactivated at Y-12

Posted at 7:54 pm November 8, 2021
By Oak Ridge Today Staff Leave a Comment

Oak Ridge workers remove mercury and mercury-contaminated solids from process pipes in the column exchange, or COLEX, equipment at the Alpha-4 facility at the Y-12 National Security Complex. (Submitted photo)

Crews are nearly finished deactivating the second of three collections of old, mercury-contaminated equipment around the Alpha-4 facility at the Y-12 National Security Complex at Oak Ridg e, a press release said.

The project addresses potential environmental risks and moves the U.S. Department of Energy Office of Environmental Management a step closer to preparing one of Y-12’s largest high-risk contaminated facilities for demolition, the press release said.

The column exchange, or COLEX, structures are connected to the four-story 500,000-square-foot Alpha-4 building, which was used for uranium separation from 1944 to 1945. Workers finished installing the COLEX equipment in 1955 for lithium separation, a process that required large amounts of mercury. A significant amount of the mercury was lost into the equipment, buildings, and surrounding soils, and its cleanup is one of EM’s top priorities.

[Read more…]

For members: More than 4,000 fish, crayfish killed by Y-12 chlorinated water, mercury

Posted at 2:35 pm July 6, 2021
By John Huotari Leave a Comment

Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.

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Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.

The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.

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*Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)*

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.

The first series of incidents was likely caused by the release of mercury while crews were cleaning up and removing equipment at the Alpha-4 Building on the west side of Y-12, according to scientists and officials. Alpha-4 is the most contaminated of the four major mercury-contaminated buildings at Y-12. Millions of pounds of mercury were used at Y-12 decades ago to produce nuclear weapons parts. Removing mercury-contaminated buildings, equipment, and soil remains one of the top challenges of cleaning up the Oak Ridge Reservation.

Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.

The rest of this story, which you will read only on Oak Ridge Today, is available if you are a member: a subscriber, advertiser, or contributor to Oak Ridge Today.

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If you prefer to send a check, you may do so by mailing one to:

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Spending bill has $639 million for DOE cleanup in Oak Ridge

Posted at 5:30 pm March 29, 2018
By John Huotari Leave a Comment

An aerial view of the Biology Complex at the Y-12 National Security Complex. Plans call for eventually demolishing the complex. (Photo courtesy U.S. Department of Energy)

The federal spending bill approved last week includes $639 million for the federal government’s cleanup program in Oak Ridge, including what could be full funding for a top priority deactivation and demolition project at the Y-12 National Security Complex. The $639 million for the current fiscal year is an increase of $141 million or more, compared to recent fiscal years, and it’s the most money appropriated in a while. Besides Y-12, the fiscal year 2018 funding will be used for U.S. Department of Energy cleanup projects at East Tennessee Technology Park (the former K-25 site) and Oak Ridge National Laboratory. “It’s very positive for us,” said Jay Mullis, manager of the DOE Oak Ridge Office of Environmental Management, or OREM. Mullis gave a brief update at a meeting of the Oak Ridge Reservation Communities Alliance on Monday. In addition to $125 million to deactivate and demolish the Biology Complex at Y-12, the fiscal year 2018 spending bill includes $17.1 million in funding for the planned Mercury Treatment Facility at Y-12, about $200 million for continued cleanup work at ETTP, and a total of roughly $12 million for the Environmental Management Disposal Facility, or EMDF. That’s a proposed landfill that could be west of Y-12 and accept waste from future cleanup work at Y-12 and ORNL, possibly early in the 2020s. The project plan for EMDF is expected to be open to public comment later this summer. [Read more…]

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