Waste Management

With the placement of 25 wall sections, 208 support columns, and 7 roof sections, work crews have completed all major concrete placements for the megavolume Saltstone Disposal Unit (SDU) 10 at the Savannah River Site in South Carolina, according to the Department of Energy’s Office of Environmental Management.

The Department of Energy’s Office of Environmental Management and its contractor Washington River Protection Solutions (WRPS) recently demonstrated the use of cold spray technology as a means of refurbishing double-shell waste tanks at the Hanford Site in Washington state. The tanks store liquid radioactive and chemical waste that was created during Hanford’s plutonium production era.

The Department of Energy’s Office of Nuclear Energy announced last week that the Association of American Railroads has certified its Atlas railcar system to operate on all major freight railroads in the United States.

Watch a video of the Atlas railcar development here.

Switzerland’s national cooperative for the disposal of radioactive waste, Nagra, is distancing itself from recent reports regarding the work of the Geneva-based engineering start-up Transmutex, which claims to have developed a new technology for the transmutation of radioactive waste.

The large vehicle used to transport highly radioactive canisters at the Department of Energy’s Savannah River Site has completed a pit stop to ensure the continued movement of the site’s radioactive liquid waste work.

The Department of Energy’s Office of Environmental Management announced that its Office of River Protection (ORP) recently created a plan with contractor Bechtel National for completing the High-Level Waste Facility at the Hanford Site’s Waste Treatment and Immobilization Plant, also known as the Vit Plant.

The Defense Nuclear Facilities Safety Board (DNFSB), an independent government organization responsible for overseeing public health and safety issues at Department of Energy defense nuclear facilities, has alerted the DOE because of safety concerns it has regarding the use of continuous air monitors (CAM) at the Waste Isolation Pilot Plant in New Mexico.

Part of WIPP’s new Safety Significant Confinement Ventilation System (SSCVS), the CAM system is intended to detect a radiological release in the repository and automatically close vent dampers to prevent the escape of radioactive particles to the outside environment. The SSCVS, which began commissioning in November 2023, is intended to increase airflow to the underground to allow for simultaneous underground waste emplacement, mining, and ground control work.

The Department of Energy has received initial approval, known as “Critical Decision-0” (CD-0), for siting a federal consolidated interim storage facility for commercial spent nuclear fuel. Paul Murray, deputy assistant secretary of energy within the DOE’s Office of Nuclear Energy, confirmed to Nuclear Newswire that the DOE received CD-0 approval on May 6.

Researchers at the Department of Energy’s Argonne National Laboratory are investigating the details of plutonium chemistry with the goal of aiding the cleanup of the Hanford Site in Washington state. For more than 40 years, reactors located at Hanford produced plutonium for America’s defense program, resulting in millions of gallons of liquid radioactive and chemical waste.

Borehole disposal of spent nuclear fuel (SNF) and high-level waste (HLW) uses off-the-shelf directional drilling technology developed and commercialized by the oil and gas sectors. It is a technology that has been gaining traction in recent years in the nuclear industry. Disposal can be done in one or more boreholes (including an array) drilled into suitable sedimentary, igneous, or metamorphic host rocks. Waste is encapsulated in specialized corrosion-resistant canisters, which are placed end to end in disposal sections of relatively small-diameter boreholes that have been cased and fluid-filled. After emplacement, the vertical access hole is plugged and backfilled as an engineered barrier.

The Nuclear Waste Technical Review Board, an independent federal agency that evaluates the Department of Energy’s efforts to manage and dispose of spent nuclear fuel and high-level radioactive waste, will hold a two-day public meeting May 21–22 to review information on the DOE’s research and development activities related to the disposal of SNF and HLW in crystalline host rocks and on the corrosion of commercial SNF after disposal.

The U.S. Department of Energy, Washington State Department of Ecology, and U.S. Environmental Protection Agency have reached an agreement on revised plans for managing millions of gallons of radioactive and chemical liquid waste stored in 177 underground tanks at the Hanford Site near Richland, Wash.

An International Atomic Energy Agency task force has confirmed that the discharge of treated water from Japan's Fukushima Daiichi nuclear power plant is progressing in accordance with the plan approved by Japan’s Nuclear Regulation Authority.

Canada’s Nuclear Waste Management Organization, a not-for-profit organization responsible for the long-term management of the country’s intermediate- and high-level radioactive waste, is set to select a site for a deep geologic repository by the end of the year.

A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.

Harrison Western Shaft Sinkers (HWSS), the company drilling a new utility shaft at the Department of Energy’s Waste Isolation Pilot Plant in New Mexico, has retained a safety culture expert following a near-miss accident in the shaft late last year. The safety expert will conduct monthly facilitated discussions with crews working on the shaft to reinforce expectations for identifying concerns regarding unsafe circumstances, according to a recent report by the Defense Nuclear Facilities Safety Board (DNFSB).

Registration is open for Argonne National Laboratory’s Facility Decommissioning Training Course, a four-day instruction designed for those responsible for the decontamination and decommissioning of nuclear facilities and who are looking to understand the full breadth and depth of the D&D processes.

The next session will be held July 16–19 in Santa Fe, N.M. Information on the course and how to register can be found here.

The Department of Energy’s Office of Environmental Management has authorized the newest megavolume disposal unit to begin operating at the Savannah River Site in South Carolina.

The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.

ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.

Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.

The Department of Energy’s Office of Environmental Management has issued a request for qualifications for interested parties and prospective offerors looking to enter into a realty agreement for carbon-pollution-free electricity (CFE) projects at the department’s Waste Isolation Pilot Plant site in southeastern New Mexico.