Decontamination and Decommissioning

In December 2022, UCC UK became the first nuclear diving company in more than 60 years to enter Sellafield’s PFSP. (Photo: Sellafield Ltd.)

Underwater Construction Corporation (UCC) UK Ltd. announced that it has recently completed a nuclear diving pilot project at the Pile Fuel Storage Pond (PFSP) at the Sellafield nuclear site in Cumbria, England. UCC UK said the project marks a significant decommissioning milestone for Sellafield, demonstrating the capability of the company’s methods and equipment to remediate the legacy nuclear pond while limiting worker dose.

The oldest pool on the Sellafield site, the PFSP was constructed between the late 1940s and early 1950s as a storage and cooling facility for irradiated fuel and isotopes from the two Windscale reactors and was in full operation until 1962. Then through the mid-1970s, the pond facility, one of six on the site, was used for storage of intermediate-level waste and fuel from the U.K. nuclear program.

Nuclear dismantling and decommissioning company APTIM said it is on schedule to wrap up field activities decommissioning the U.S. Navy’s Surface Ship Support Barge (SSSB) by April, with project closure slated for June. The company announced yesterday that its team has completed the demolition of the barge’s former spent fuel water pool, also referred to as the “wet pit,” or the heart of the vessel.

The Nuclear Regulatory Commission has updated its guidance for nuclear power plant owners and operators in estimating the cost of decommissioning their reactors. Licensed power reactor operators are required under NRC regulations to annually adjust the estimated costs (in current-year dollars) of decommissioning their plants to ensure that adequate funds are available when needed.

The U.S. Department of Transportation has drafted a programmatic agreement (PA) on the decommissioning the NS Savannah, the world’s first nuclear-powered merchant ship. Christened in 1959 under President Dwight Eisenhower’s Atoms for Peace initiative, which challenged world leaders to develop peaceful uses of nuclear power, the ship served as a demonstration project for the potential maritime use of nuclear energy.

Construction crews at the Department of Energy's Paducah Site in Kentucky have broken ground on a new Emergency Operations Center (EOC) to improve coordination and response to emergencies across the site.

The 3,500-square-foot facility will replace the existing EOC, which was established in the site’s C-300 Control Building around 1990. The C-300 Control Building was built during the 1950s. The new modern facility will be used to monitor environmental conditions and house emergency management personnel.

The new EOC is scheduled for completion in this year.

A video is available on the construction of the new EOC.

A new animated video from the Department of Energy's Office of Environmental Management (EM) shows how cleanup contractor CH2M HILL BWXT West Valley (CHBWV) will take down the main plant process building at the West Valley Demonstration Project (WVDP).

The EM team at West Valley wanted to convey the project to the public, and they believe the animation accomplishes that goal, according to Stephen Bousquet, EM WVDP federal project director for the Main Plant Deconstruction Project.

Click here to watch the video.

A consortium comprising Westinghouse Electric Spain, Jacobs, and the Lithuanian Energy Institute has been selected to plan dismantling and waste management at the long closed two-unit Ignalina nuclear power plant in Lithuania.

The Nuclear Regulatory Commission has issued a proposed rule that would amend its regulations for approved financial assurance mechanisms for decommissioning. The rule is intended to implement the provisions of the 2010 Dodd-Frank Wall Street Reform and Consumer Protection Act that directed agencies to amend their regulations to remove any reference to or requirement of reliance on credit ratings.

Work crews at the Department of Energy’s Hanford Site in Washington state are performing risk-reduction activities at the Plutonium Uranium Extraction (PUREX) plant to prepare it for eventual disposition.

“It will be a yearslong effort to get this large facility ready for disposition, and I’m encouraged by the progress to safely and efficiently advance this work,” said Andy Wiborg, the DOE’s Projects and Facilities Division team lead for Hanford’s Central Plateau cleanup project.

The Department of Energy’s Office of Environmental Management (EM) said its cleanup contractor UCOR recently completed the first-ever demolition of a reactor in the central campus area at the Oak Ridge National Laboratory in Tennessee.

Holtec continues the decommissioning work at Indian Point nuclear power plant in Buchanan, N.Y.

Unit 2, a 1,028-MWe pressurized water reactor, was shut down in April 2020; Unit 3, a 1,041-MWe PWR, was closed one year later. (Unit 1 was decommissioned in 1974.)

The Department of Energy’s Office of Environmental Management (EM) announced that construction of Hanford’s K East Reactor cocoon has been completed ahead of schedule and under budget. Cocooning of K East—enclosing it in a protective steel structure while the reactor’s radioactivity naturally decays—was one of EM’s key construction priorities for 2022.

The Department of Energy’s Office of Environmental Management (EM) announced on October 18 that it has begun the process of transferring primary authority of South Carolina’s Savannah River Site (SRS) to the National Nuclear Security Administration, with the transfer expected to be completed in 2025.

Workers at the Department of Energy’s Savannah River Site have achieved an 85 percent reduction in the site’s operational footprint, a percentage that will grow as decommissioning and demolition of facilities continue in the site’s massive D Area, according to the DOE.

Work crews at the Department of Energy’s Oak Ridge Site in Tennessee have successfully completed the demolition of the former Criticality Experiment Laboratory. Crews worked this past summer to bring down the dilapidated 1940s-era facility, also known as Building 9213.

The Department of Energy’s Office of Environmental Management (EM) said it has met one of its cleanup priorities for 2022 by beginning demolition of the Main Plant Process Building (MPPB) at the West Valley Demonstration Project (WVDP) in New York. Located 35 miles south of Buffalo, the 150-acre WVDP site is home to the only commercial spent nuclear fuel reprocessing facility to operate in the United States.

The Nuclear Regulatory Commission has made Holtec International’s post-shutdown decommissioning activities report (PSDAR) for the closed Palisades nuclear power plant available for public comment until December 27. The NRC also plans to hold a public meeting to discuss the report on the evening of September 22 at the South Haven campus of Lake Michigan College, about 10 miles north of the Palisades site in Covert, Mich.

The reports of the death of the Diablo Canyon nuclear power plant may be greatly exaggerated. While Pacific Gas and Electric (PG&E) announced as early as 2016 that it would be closing California’s last operating nuclear power plant at the end of its current operating license, there has been growing political pressure to keep the plant, and its 2,200 MWe of carbon-free energy, running.

The Jeep-II facility at Kjeller. (Photo: Institute for Energy Technology)

A joint venture of Jacobs and Oslo-based engineering company Multiconsult Norge have been selected by Norsk Nukleær Dekommisjonering (NDD) to plan the decommissioning of Norway’s nuclear facilities. NDD is the state-run enterprise responsible for the decommissioning of Norway’s nuclear facilities and radioactive waste management.

Holtec International announced on June 28 that it has completed the acquisition of the Palisades nuclear power plant and the Big Rock Point site from Entergy Corporation. The Nuclear Regulatory Commission approved the license transfer for the two sites, both located in Michigan, in December 2021.