Radwaste Solutions

Holtec’s 1,500th canister is positioned for placement into the HI-STORM UMAX system at Ameren Missouri’s Callaway Energy Center. Photo: Holtec

Holtec International said that it successfully loaded its 1,500th spent fuel canister last week as part of the ongoing dry storage campaign at Ameren Missouri’s Callaway Energy Center. Holtec’s HI-STORM UMAX subterranean dry storage system has been in service at Callaway since 2015. The MPC-37 multipurpose canister is used to place 37 pressurized water reactor spent fuel assemblies into each HI-STORM UMAX vertical ventilated module.

“There has been a strong collaboration between our teams, and I truly appreciate the strong focus on doing the work safely, correctly, and to the highest standards of excellence,” said Fadi Diya, senior vice president and chief nuclear officer of Ameren Missouri, in a March 17 announcement.

“Just as we shared the milestone in 2015 of deploying the world’s first subterranean dry storage system under a general license, we are proud to share this milestone with Ameren,” said Pierre Oneid, Holtec’s senior vice president and chief nuclear officer.

Southern California Edison has released a three-volume set of plans supporting the off-site relocation of the spent nuclear fuel currently stored at the San Onofre Nuclear Generating Station. According to SCE, the release of the Action Plan, the Strategic Plan, and the Conceptual Transportation Plan constitutes a significant milestone in a process that began with the 2017 settlement regarding the coastal development permit issued for San Onofre’s expanded spent fuel storage installation.

At the same time, in an effort to urge the federal government to find a permanent solution to the nation’s inventory of commercial spent fuel, SCE and the counties of Orange and San Diego announced on March 15 the formation of a stakeholder coalition, Action for Spent Fuel Solutions Now.

“SCE and our partners and stakeholders have a genuine opportunity to bring people together with a shared interest to prepare and advocate for the relocation of the spent fuel away from the coast,” said Kevin Payne, SCE’s president and chief executive officer. “It is clear that to make tangible progress on this issue, the federal government must act. Rather than wait for this to happen, we are going to be a catalyst for change.”

Information about the coalition, including how to join, is available on its website.

Eiler

Noting that an increasing number of large components will need to be shipped from the growing number of nuclear power plants being decommissioned, Todd Eiler, director of decommissioning and decontamination engineering projects at EnergySolutions, said that the safety of nuclear waste transportation is paramount. “It is imperative as an industry that we do these shipments safely. There’s really no margin for error here,” Eiler said on March 11 during the 2021 Waste Management Symposia virtual conference panel session “Efficient and Effective Waste Management During the D&D of Nuclear Power Plants.”

While noting the stellar safety record of the nuclear industry in transporting radioactive waste, Eiler said that any incident involving a large component from a decommissioned nuclear reactor will cause national headlines, and that the industry needs to adopt a conservatism above and beyond what is already required by regulations.

As plant owners and decommissioning companies prepare to ship reactor components for disposal, Eiler said, entities that do not have direct regulatory oversight but may have some secondary involvement should not be overlooked. As an example, he said that when moving the San Onofre-1 reactor pressure vessel to Utah for disposal, EnergySolutions was not required by regulations to coordinate with the Federal Railroad Administration. “However, they are a stakeholder that definitely has authority over a project of that magnitude [where] you are transporting an irradiated component on the nation’s most in-demand rail infrastructure,” he said, adding that getting the administration’s input early in the project was important.

It has been more than a year since the COVID-19 virus fundamentally changed our daily lives, but with mass vaccinations underway, it is now possible to see a light at the end of the tunnel. The past year presented many challenges, as well as new opportunities, and this was the focus of discussion during the panel session “Strategies to Increase Efficiency, Reduce Cost, Accelerate Work, and Maintain Operational Excellence,” held on March 10 during the 2021 Waste Management Symposia virtual conference. “Last year was a tough year for all of us,” said John Eschenburg, president and chief executive officer of Washington River Protection Solutions, the Department of Energy’s liquid waste contractor at the Hanford Site, near Richland, Wash. “[There were] challenges top to bottom.”

Some of the challenges the session speakers said they faced included transitioning personnel to working remotely, ensuring safety with reduced on-site staff, and reducing workplace stress caused by the pandemic. Yet, the panelists found lessons learned from the pandemic that have created opportunities for positive change, such as the ability to reduce overhead costs while offering staff better a work/life balance by continuing to allow remote working where possible post-pandemic. “Teleworking is here to stay at some level,” Eschenburg noted.

Secretary Granholm during a live stream of the 2021 Waste Management Symposia.

Newly appointed Energy Secretary Jennifer Granholm promised a more “collaborative and inclusive approach” to working with communities hosting and surrounding Department of Energy cleanup sites during a video address to the 2021 Waste Management Symposia on March 9. Granholm is the highest DOE official to ever address the annual conference dedicated to radioactive waste management, which is being held virtually this year due to the ongoing pandemic.

“Our work is about more than just restoring the land,” Granholm said of the DOE’s environmental management program. “It is really about keeping our promises to the American people. It is our responsibility to lift this burden from communities that have shouldered the burden of our safety and help them achieve a more vibrant and sustainable future.”

William “Ike” White, the DOE's acting assistant secretary for Environmental Management. Source: DOE

William “Ike” White, the Department of Energy’s acting assistant secretary for environmental management, helped open the 2021 Waste Management Symposia by announcing a new era for the department’s Office of Environmental Management (EM) and its cleanup mission. Speaking via live stream during the virtual meeting’s plenary session on March 8, White said, “Today, EM is at the start of a new era, with a new administration and a new set of priorities for the year, and, hopefully, the start of a new post-pandemic world.”

The new priorities that White touted are contained in EM’s Calendar Year 2021 Mission and Priorities, which outlines specific planned goals across the cleanup complex for the coming year. According to the DOE, the calendar serves as a marker for EM’s continuing success in addressing the legacy of nuclear weapons production and government-sponsored nuclear energy research.

Dounreay Site Restoration Ltd. (DSRL) has awarded a six-year contract worth an estimated $10.4 million to engineering company Jacobs to lead an integrated design management team for one of the world’s deepest nuclear cleanups. The team will help in coordinating the program to clear and treat radioactive waste in the shaft and silo at Dounreay, near Thurso, in Scotland, U.K., a former fast reactor research and development center.

The Dounreay shaft extends 214.5 feet below ground and measures 15 feet wide in places, while the silo is a large underground vault with a concrete roof. Both were used for disposal of intermediate-level radioactive waste in the 1960s and 1970s, but now the solid waste and liquid effluent they contain needs to be retrieved and repackaged for removal to a safe, modern storage facility.

DSRL, the site decommissioning company, has tasked Jacobs with leading design integration ahead of the start of construction work. The company will also assist with the management of design and build work packages and offer design support during construction and commissioning. In announcing the contract on March 4, Jacobs said that it will subcontract with Berkshire Engineering, which is based near Dounreay, to assist with test and trials work.

Workers at the Savannah River Site’s F Tank Farm (FTF) are preparing to close radioactive waste tanks, according to a March 2 release from SRS. The last time a waste tank was closed at the farm was in April 2016.

The FTF is a 22-acre site that contains 22 of the 51 tanks spanning two SRS tank farms. (The separate-site H Tank Farm houses the remaining 29 tanks.) The FTF’s 22 tanks are below-grade, carbon steel and reinforced concrete tanks that store or previously have stored liquid radioactive waste generated at SRS, in South Carolina.

Workers retrieve waste from a single-shell tank at the Hanford Site earlier this year. Photo: DOE

The Department of Energy’s Office of Environmental Management (EM) has issued a draft request for proposals for the new Integrated Tank Disposition Contract at the Hanford Site near Richland, Wash. The 10-year, $26.5 billion contract will replace the Tank Operations Contract currently held by Washington River Protection Solutions, and the scope will be expanded to include the operation of the Waste Treatment and Immobilization Plant (WTP) after radiological, or “hot,” commissioning of the plant is completed.

The DOE had awarded a tank closure contract to a team led by BWX Technologies in May of last year, but later rescinded that decision after protests were raised by the two losing contract bidders.

About 56 million gallons of radioactive waste is contained in Hanford’s 177 aging underground tanks. The WTP, which is still under construction, will vitrify the waste after it has been separated into low- and high-activity waste streams.

A view of the demolition of a hot cell inside a protective cover at the former radioisotope development lab at ORNL. Photo: DOE

The Department of Energy’s Oak Ridge Office of Environmental Management and contractor UCOR have begun removing the two remaining structures at the former radioisotope development laboratory at Oak Ridge National Laboratory, in Tennessee.

“This project launches our next phase of major demolition and cleanup at ORNL,” said Nathan Felosi, ORNL’s portfolio federal project director for OREM. “Our work is eliminating contaminated structures, like this one, that are on DOE’s list of high-risk facilities and clearing space for future research missions.”

The project is scheduled to be completed this spring, OREM reported on February 23.

The Environmental Protection Agency has awarded three contracts for cleanup efforts at more than 50 abandoned uranium mine sites in and around the Navajo Nation in the southwestern United States. The Navaho Area Abandoned Mine Remedial Construction and Services Contracts, worth up to $220 million over the next five years, were awarded to the Red Rock Remediation Joint Venture, Environmental Quality Management, and Arrowhead Contracting, the agency announced on February 11.

According to the EPA, the cleanup work is slated to begin later this year, following the completion of assessments in coordination with the Navajo Nation EPA, the tribe’s environmental agency. The sites are in New Mexico’s Grants Mining District and 10 Navajo Nation chapters. The companies selected have experience working on hazardous waste sites across the country, including cleaning up other abandoned mine sites in the Southwest, the EPA said.

A subcontractor has been selected to continue making modifications to a Hanford facility to transfer nearly 2,000 highly radioactive capsules to safer interim dry storage.

Central Plateau Cleanup Company, the Department of Energy’s prime cleanup contractor for the Central Plateau area of the Hanford Site, near Richland, Wash., recently awarded a $9.5 million construction subcontract to Apollo Mechanical Contractors. Apollo will continue work on the site’s Waste Encapsulation and Storage Facility (WESF), where nearly 2,000 highly radioactive capsules containing cesium and strontium are stored underwater.

Apollo will modify the WESF and install equipment needed to transfer the radioactive capsules from a water-filled basin to safer interim dry storage. In the 1970s, to reduce the temperature of the waste inside Hanford’s waste tanks, cesium and strontium were removed from the tanks and moved to the WESF. The DOE expects that the transfer of the capsules to dry storage will be completed by 2025.

“While the 1,936 cesium and strontium capsules are currently in safe storage, WESF is an aging facility,” said Gary Pyles, project manager for the DOE’s Richland Operations Office. “Moving the capsules will enable the planned deactivation of WESF and will reduce the risk and significantly reduce the annual costs for storing the capsules.”

The antinuclear organization Beyond Nuclear is appealing the Nuclear Regulatory Commission’s dismissal of its petition to intervene in the proceeding for Interim Storage Partners’ (ISP) application to build and operate a consolidated interim storage facility (CISF) for spent nuclear fuel in western Texas. Beyond Nuclear filed suit in the U.S. Court of Appeals for the District of Columbia Circuit on February 10, asking the court to order the dismissal of the license application.

ISP, a joint venture of Waste Control Specialists (WCS) and Orano, submitted its application for the CISF with the NRC in June 2018. In September 2018, Beyond Nuclear filed a motion to dismiss the application. An NRC Atomic Safety and Licensing Board denied Beyond Nuclear’s request for a hearing in the licensing proceedings, and in December 2020, the NRC issued an order upholding that decision.

Work crews remove the first column filled with cesium from the Tank Closure Cesium Removal unit by crane in H tank farm at the Savannah River Site. Photo: DOE

Columns filled with cesium have been removed at the Savannah River Site in a demonstration project designed to accelerate removal of radioactive salt waste from underground tanks.

“On the surface, it appeared to be like any other crane lift and equipment transport, which are routinely performed in the tank farms. However, this equipment contained cesium-rich, high-level waste, which was transported aboveground via roadway to an on-site interim safe storage pad,” said Savannah River Remediation (SRR) president and project manager Phil Breidenbach. “It was all handled safely and executed with outstanding teamwork by our highly skilled workforce.”

Operated by liquid waste contractor SRR, a system known as the Tank Closure Cesium Removal (TCCR) unit removes cesium from the salt waste in Tank 10 in the site's H Tank Farm. The TCCR is a pilot demonstration that helps accelerate tank closure at the site, according to a report by the Department of Energy on February 9.

Graphical rendering of Fortis railcar design with spent nuclear fuel cask. Image: DOE

The Association of American Railroads (AAR) recently gave the Department of Energy approval to begin building and testing Fortis, a high-tech railcar designed specifically to transport the nation’s spent nuclear fuel and high-level radioactive waste. Fortis is one of two specialized railcars under development by the DOE that could be operational within the next five years.

Fortis is an eight-axle, flat-deck railcar that will be able to transport large containers of spent fuel and HLW. It is equipped with high-tech sensors and monitoring systems that report 11 different performance features back to the operators in real time. The railcar design was completed earlier this year, with technical support from Pacific Northwest National Laboratory.

According to the DOE, AAR signed off on the design in January, allowing the department to begin fabricating and testing the prototype in compliance with the rail industry’s highest design standard for railcars transporting spent fuel and HLW.

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.

NUREG-1307, Revision 18, Report on Waste Burial Charges: Changes in Decommissioning Waste Disposal Costs at Low-Level Waste Burial Facilities, issued on February 3, explains the formula acceptable to the NRC for determining the minimum decommissioning fund requirements for nuclear power reactor licensees. Specifically, NUREG-1307 provides the adjustment factor and updates the values for the labor, energy, and waste burial escalation factors of the minimum formula.

The Department of Energy’s National Nuclear Security Administration has extended to February 18 the public comment period for the scoping of its planned environmental impact statement (EIS) for the Surplus Plutonium Disposition Program, which would dilute and dispose of 34 metric tons of surplus military grade plutonium.

The NNSA on December 16 announced its intent to prepare the EIS, which will examine the agency’s preferred alternative, “dilute and dispose,” also known as “plutonium downblending,” and other alternatives for disposing of the material. The NNSA has been pursuing the dilute-and-dispose approach to managing the surplus plutonium following the cancellation of the MOX Fuel Fabrication Facility at the DOE’s Savannah River Site.

A preliminary study conducted by the nuclear waste storage and disposal startup company Deep Isolation found that Estonia’s geology is capable of safely hosting a deep horizontal borehole repository for radioactive waste from advanced nuclear reactors.

The study, commissioned by advanced reactor deployment company Fermi Energia, found no fundamental geologic limitations to disposing of nuclear waste in deep horizontal boreholes, according to Deep Isolation. In addition, the study noted that a wide range of locations could be demonstrated to comply with International Atomic Energy Agency regulations for geologic disposal.

The findings: Results of the study, which was conducted in collaboration with Estonian geologic and drilling company Engineering Bureau STEIGER, will be presented as part of Fermi Energia’s one-day conference on small modular reactors, "New Generation Nuclear Energy in Estonia," on February 9. Registration for the event is available online.

The American Nuclear Society is urging the National Nuclear Security Administration to rethink its “dilute-and-dispose” plan for managing surplus weapons-grade plutonium. In comments submitted to the NNSA, ANS notes that a better solution for the agency’s inventory of surplus plutonium is to convert it to nuclear fuel for advanced reactors, as was originally intended.

The comments are in response to a December 16 Federal Register notice by the NNSA that it intends to prepare an environmental impact statement on the scope of its Surplus Plutonium Disposition Program. According to the notice, the NNSA intends to dispose of the entire 34 metric tons of surplus plutonium using its dilute-and-dispose approach, whereby the material will be downblended and shipped as transuranic waste to the Department of Energy’s Waste Isolation Pilot Plant (WIPP) in New Mexico.

Under the Plutonium Management and Disposition Agreement, signed by the United States and Russia in 2000, the 34 tons of plutonium was to be converted to mixed-oxide nuclear fuel using the MOX Fuel Fabrication Facility at the Savannah River Site, in South Carolina. However, the Obama administration, citing rising costs, halted construction on the facility in 2016, and the project was eventually canceled in 2019.

A new report out of Columbia University’s Center on Global Energy Policy (CGEP) offers a number of recommendations for improving the management of spent nuclear fuel and high-level radioactive waste in the United States.

The report, Forging a Path Forward on U.S. Nuclear Waste Management: Options for Policy Makers, explains how the United States reached its current stalemate over nuclear waste disposal. It then examines productive approaches in other countries, and a few domestic ones, that could guide policymakers through options for improving the prospects for finding a disposal path for U.S. spent fuel and HLW.

Part of the center’s wider work on nuclear energy, the report echoes previous recommendations for U.S. spent fuel and HLW management, such as the use of a consent-based siting process and the formation of an independent waste management organization, both of which were recommended in the Blue Ribbon Commission’s 2012 report to the Secretary of Energy and Stanford University’s 2018 report, Reset of U.S. Nuclear Waste Management Strategy and Policy.