Radwaste Solutions

Crews cleaned and demolished COLEX equipment on the west end of the Alpha-4 building at the Y-12 National Security Complex. Photo: DOE

The Department of Energy’s Oak Ridge Office of Environmental Management and its contractor UCOR have found a way to reuse instead of dispose of mercury collected from a cleanup project at the Y-12 National Security Complex, near Oak Ridge National Laboratory in Tennessee. “This questioning attitude and innovative thinking by our workforce is a major contributor to how our program is able to accomplish its projects under budget and ahead of schedule on a consistent basis,” said OREM manager Jay Mullis.

The DOE is conducting a number of projects to address mercury contamination—the most significant environmental risk is at Y-12, according to the agency. The work includes the cleanout and removal of equipment at Y-12's Alpha-4, a building that was used initially for uranium separation in 1944 and 1945. Ten years later, the building started being used for lithium separation, a process that required large amounts of mercury and involved column exchange (COLEX) equipment. Over the years, a significant amount of mercury from the process leached into the equipment, buildings, and surrounding soils.

A screen capture from a video that shows "bogie" testing in action. Source: DOE

Startup engineers at the Hanford Site’s Waste Treatment and Immobilization Plant (WTP) have been performing mechanical equipment testing on the two units that make up the “bogie,” or cart transport rail system, in the lower level of the Low-Activity Waste (LAW) facility.

During future plant operations, containers will be filled with vitrified radioactive and chemical waste and placed on the bogie transport rail that leads to the facility’s finishing line area before the containers are moved to storage.

To date, all 94 systems in the LAW facility have been turned over to startup, and 38 of those have been handed over for commissioning, according to the DOE on January 26.

View this video to learn more about the transport system testing.

Workers at LANL's RANT facility load the first comingled TRU waste shipment from the DOE and the NNSA. Photo: DOE

The Los Alamos field offices of the Department of Energy's Office of Environmental Management and the National Nuclear Security Administration have completed their first comingled shipment of transuranic (TRU) waste from Los Alamos National Laboratory to the Waste Isolation Pilot Plant in New Mexico.

"Comingling NNSA and EM waste allows for more efficient shipments to WIPP," Kirk Lachman, EM Los Alamos field office manager, said on January 14. "Reducing LANL’s above-ground waste inventory is an important issue to our local communities and is one of our mission priorities.”

The comingled shipment consisted of one Transuranic Package Transporter Model 3 container with a total of 28 drums and containers inside.

Indian Point nuclear power plant in Buchanan, N.Y. Photo: Entergy Nuclear

New York Attorney General Letitia James filed a lawsuit on behalf of the State of New York against the Nuclear Regulatory Commission over the sale of the Indian Point nuclear power plant to subsidiaries of Holtec International for decommissioning.

Filed in the U.S. Court of Appeals for the District of Columbia Circuit on January 22, the suit challenges the NRC’s denial of New York’s petition for a hearing regarding the transfer of Indian Point’s licenses from owner Entergy to Holtec, as well as the NRC’s initial approval of the license transfer. The NRC approved the transfer in November 2020 while challenges from the state and other groups were still being adjudicated. The NRC issued its order denying New York’s petition to intervene on January 15.

The transfer of ownership of the plant from Entergy to Holtec is targeted to occur after Indian Point-3 shuts down in April 2021. Indian Point-2 permanently ceased operations in April 2020, and Indian Point-1 has been shut down since 1974. The pressurized-water reactors are located in Buchanan, N.Y., approximately 24 miles north of New York City.

An aerial view of the Salt Waste Processing Facility at SRS. Photo: DOE

The hot commissioning testing phase of operations at the Salt Waste Processing Facility (SWPF) has been completed, signaling the facility’s entrance into fully integrated operations with the other liquid waste facilities at the Department of Energy’s Savannah River Site in South Carolina.

Radiation shielding, environmental emissions, and product waste acceptance requirements were all tested and validated during the commissioning phase of the SWPF, the DOE announced on January 19. The SWPF will treat the approximately 31 million gallons of remaining salt waste currently stored in underground tanks at SRS.

Parsons Corporation, the contractor that designed and built the first-of-a-kind facility, will operate the SWPF for one year, beginning this month. It is anticipated that the facility will process up to 6 million gallons of waste during the first year of operations.

The Nuclear Regulatory Commission has extended for two months the public comment period for its draft decommissioning guidance, Consolidated Decommissioning Guidance, Characterization, Survey, and Determination of Radiological Criteria (NUREG-1757, Volume 2, Revision 2).

The LongOps project will develop innovative robotic technologies. Photo: UKAEA

Britain and Japan have signed a research and technology deployment collaboration to help automate nuclear decommissioning and aspects of fusion energy production. According to the U.K. government, which announced the deal on January 20, the £12 million (about $16.5 million) U.K.–Japanese robotics project, called LongOps, will support the delivery of faster and safer decommissioning at the Fukushima Daiichi reactors in Japan and at Sellafield in the United Kingdom, using long-reach robotic arms.

The four-year collaboration on new robotics and automation techniques will also be applied to fusion energy research in the two countries.

Funded equally by U.K. Research and Innovation, the U.K.’s Nuclear Decommissioning Authority, and Japan’s Tokyo Electric Power Company, the LongOps project will be led by the U.K. Atomic Energy Authority’s (UKAEA) Remote Applications in Challenging Environments (RACE) facility.

The Department of Energy is considering disposing of contaminated process equipment from its Savannah River Site (SRS) at a commercial low-level waste facility using its recent interpretation of the statutory term “high-level radioactive waste,” which classifies waste generated from the reprocessing of spent nuclear fuel based on its radiological content rather than its origin.

A four-year campaign to repatriate 161 kilograms of highly enriched uranium liquid target residue material (TRM) from Chalk River Laboratories in Ontario, Canada, to the Savannah River Site in Aiken, S.C., has been completed, the National Nuclear Security Administration (NNSA) and Atomic Energy of Canada Limited (AECL) announced on January 12.

The campaign was conducted under the U.S.-Origin Foreign Research Reactor Spent Nuclear Fuel Acceptance Program, established in 1996 to return U.S.-origin spent nuclear fuel and other weapons-grade nuclear material from civilian sites worldwide. Other partners involved in the effort included the Department of Energy’s Office of Environmental Management (EM), Canadian Nuclear Laboratories, Savannah River Nuclear Solutions (SRNS), and Savannah River National Laboratory as well as state and tribal governments.

The TRM is the by-product of the production of medical isotopes from AECL’s now-shuttered National Research Universal reactor. The repatriation of the material, begun in 2017 and completed in 2020, involved 115 separate truck shipments, covering some 150,000 miles, according to the announcements.

Here is a look back at the top stories of 2020 from our Waste Management section in Newswire and Nuclear News magazine. Remember to check back to Newswire soon for more top stories from 2020.

Waste Management section

• First-ever cleanup of uranium enrichment plant celebrated at Oak Ridge: The completion of the decades-long effort to clean up the former Oak Ridge Gaseous Diffusion Plant was celebrated on October 13, with Energy Secretary Dan Brouillette joining U.S. Sen. Lamar Alexander, U.S. Rep. Chuck Fleischmann, Tennessee Gov. Bill Lee, and other state and community leaders at the East Tennessee Technology Park, where the uranium enrichment complex once stood. Read more.

An engineered stainless steel container designed to hold LLW at Hanford. Photo: Bechtel National, Inc.

A Department of Energy report to the U.S. Congress shows that the reclassification of high-level radioactive waste could save more than $200 billion in treatment and disposal costs while allowing DOE sites to be cleaned up sooner—all still without jeopardizing public health and safety.

The report, Evaluation of Potential Opportunities to Classify Certain Defense Nuclear Waste from Reprocessing as Other than High-Level Radioactive Waste, identifies potential opportunities for the DOE to reduce risk to public and environment while completing its cleanup mission more efficiently and effectively. Those opportunities are based on the DOE’s 2019 interpretation of the statutory term HLW, which classifies waste based on its radiological characteristics rather than its origin.

Under the DOE’s interpretation of HLW, waste from the reprocessing of spent nuclear fuel may be determined to be non-HLW if the waste (1) does not exceed concentration limits for Class C low-level radioactive waste as set out in federal regulations and meets the performance objectives of a disposal facility; or (2) does not require disposal in a deep geologic repository and meets the performance objectives of a disposal facility as demonstrated through a performance assessment conducted in accordance with applicable requirements.

The Palisades nuclear plant will be permanently retired in the spring of next year. Photo: Entergy Nuclear

Entergy Corporation and Holtec International have jointly submitted an application to the Nuclear Regulatory Commission for approval of the transfer of the licenses for the Palisades nuclear plant, in Covert, Mich., to Holtec, following the plant’s permanent shutdown and defueling in the spring of 2022.

The application, dated December 23, also requests approval of the license transfer of Entergy’s decommissioned Big Rock Point facility near Charlevoix, Mich., where only the independent spent fuel storage installation (ISFSI) remains.

The Nuclear Regulatory Commission has withdrawn a proposed interpretation of its low-level radioactive waste regulations that would have permitted licensees to dispose of waste by transferring it to persons who hold specific NRC exemptions. “The proposal is being withdrawn based on the NRC staff’s assessment that the proposed changes may not benefit the regulatory framework for the disposal of low-level radioactive waste,” the NRC said in a December 17 Federal Register notice.

After releasing the proposed rule for public comment on March 6, 2020, the NRC received about 200 individual comment submissions and approximately 15,000 form letter submissions, the vast majority of which were in opposition to the proposed rule.

“We have strongly disputed the argument by various groups who misrepresented the proposal as deregulation of radioactive waste disposal,” NRC spokesperson David McIntyre told the Courthouse News Service. “This would not have changed anything, just made an existing case-by-case approval process more efficient.”

The Department of Energy’s National Nuclear Security Administration intends to prepare an environmental impact statement (EIS) evaluating alternatives for the safe disposal of 34 metric tons of surplus plutonium through its Surplus Plutonium Disposition Program (SPDP). The NNSA published in the December 16 Federal Register its intent to prepare the EIS, which will examine the agency’s preferred alternative, “dilute and dispose,” also known as “plutonium downblending,” and other identified alternatives for disposing of the material.

The NNSA is offering the public the opportunity to comment on the proposed scope of the EIS until February 1. In light of the COVID-19 health crisis, the agency will host an Internet- and phone-based virtual public scoping meeting in place of an in-person meeting. The date of the meeting will be provided in a future notice posted on the NNSA website.

The Nuclear Regulatory Commission has issued the draft report, Consolidated Decommissioning Guidance, Characterization, Survey, and Determination of Radiological Criteria (NUREG-1757, Volume 2, Revision 2), with a request for comments by February 8.

NUREG-1757, which is intended for use by applicants, licensees, and the NRC staff, was last updated in 2006. This latest revision addresses lessons learned and experience gained from the review of license termination plans, decommissioning plans, and final status surveys for licensees undergoing license termination since then.

Notice of the draft NUREG was published in the December 8 Federal Register.

Orano's Alain Vandercruyssen signs a cooperation agreement with KHNP on December 4. Photo: ORANO

With the signing of a cooperation agreement by Orano and Korea Hydro & Nuclear Power at KHNP’s headquarters in Gyeongju on December 4, France and South Korea are poised to enhance collaboration in the decontamination and decommissioning of nuclear facilities, particularly in South Korea and Europe.

Orano said that the collaboration will give it access to the expertise of KHNP engineers, as well as to KHNP’s network of providers of nuclear engineering services, particularly in the fields of robotics, process industrialization, and quality.

KHNP, in return, will benefit from Orano’s experience in preparing and carrying out nuclear dismantling, with the company providing technical assistance and supplying skills and training. South Korean engineers will be included in the Orano dismantling and services teams.

The aboveground portion of WIPP’s current ventilation system. Photo: GAO

A study of the Department of Energy’s Waste Isolation Pilot Plant in New Mexico has found that the repository faces long-term issues with ensuring sufficient physical space and statutory capacity to dispose of the federal government’s inventory of transuranic (TRU) waste. WIPP is the United States’ only repository for the disposal of TRU waste generated by the DOE’s nuclear weapons research and production.

The Government Accountability Office study, Better Planning Needed to Avoid Potential Disruptions at Waste Isolation Pilot Plant (CAO-21-48), was published on November 19.

The Nuclear Regulatory Commission has approved the transfer of the license for Unit 2 of the Three Mile Island nuclear power plant from FirstEnergy Companies to TMI-2 Solutions, a subsidiary of Utah-based EnergySolutions. The approval, announced on December 2, is effective immediately, and the license will be amended to reflect the new ownership once the sale of TMI-2 is completed.

Onkalo, Finland’s deep geologic repository for spent nuclear fuel, has been characterized as a game changer for the long-term sustainability of nuclear energy by Rafael Mariano Grossi, director general of the International Atomic Energy Agency.

“Finland has had the determination to move forward with the project and to bring it to fruition,” Grossi said during a November 26 visit to Olkiluoto, Finland, where the repository is under construction. “Waste management has always been at the center of many debates about nuclear energy and the sustainability of nuclear activity around the world. Everybody knew of the idea of a geological repository for high-level radioactive nuclear waste, but Finland did it.”

Posiva Oy, the Finnish company tasked with researching and creating a method for the permanent disposal of spent fuel from Finland’s Olkiluoto and Loviisa nuclear power plants, obtained a license to construct the Onkalo repository in 2015, marking the first time that a construction license for a geological disposal facility was issued anywhere in the world. The site near the Olkiluoto plant was chosen following several years of screening a number of potential sites.

Construction of a new utility shaft at the Waste Isolation Pilot Plant transuranic waste repository may be put on hold after the New Mexico Environment Department (NMED) denied a request by the Department of Energy and its contractor to extend state authorization of the project. The shaft is part of WIPP’s Safety Significant Confinement Ventilation System, a $300-million project intended to allow simultaneous mining and waste emplacement activities in the geologic repository by increasing ventilation to the underground.

The NMED in April 2020 approved a request by the DOE and WIPP operator Nuclear Waste Partnership (NWP) for temporary authorization to begin construction of the utility shaft while the state reviews a modification to WIPP’s permit allowing the addition to the repository. That authorization expired on October 24, and the DOE and NWP asked for an extension of the authorization for an additional 180 days while the permit modification process continues.