Waste Management

The Department of Energy has increased the funding level for its community engagement on consent-based siting funding opportunity announcement (FOA) from $16 million to $26 million. The DOE first announced it was making funding available to communities interested in learning more about consent-based siting, management of spent nuclear fuel, and interim storage facility siting considerations last September. The FOA follows the DOE’s recent update to its consent-based process for siting an interim storage facility for SNF.

Ten days after beginning a heat-up process to prepare for radiological operations at Idaho’s Integrated Waste Treatment Unit (IWTU), operators noticed a small leak of nonradioactive, nonhazardous solids in a cell, resulting in the facility’s shutdown in late December, the Department of Energy announced on January 10.

The Department of Energy’s National Nuclear Security Administration and Office of Environmental Management have completed the first shipment of downblended surplus plutonium transuranic (TRU) material from the K Area at the Savannah River Site in South Carolina to the Waste Isolation Pilot Plant in New Mexico.

The Department of Energy’s Office of Environmental Management (EM) said that the Integrated Waste Treatment Unit (IWTU), the radioactive liquid waste treatment facility at the Idaho National Laboratory Site, began its final heat-up in December prior to initiating radiological operations, planned for early this year.

IWTU crews were to follow a prescribed incremental process as the facility transitions from simulant to sodium-bearing waste (SBW), according to EM.

Two diversion boxes were covered with concrete to permanently close them from future use. Top, one of the boxes is shown prior to it being entombed in concrete. Bottom, the diversion box after workers placed concrete over and around the structure. (Photo: DOE)

Two previously radioactive structures have been successfully entombed at the Department of Energy’s Savannah River Site in South Carolina. The DOE’s Office of Environmental Management and the Savannah River Mission Completion (SRMC), the DOE’s liquid waste contractor at SRS, placed concrete over and around two concrete structures—called diversion boxes—that contain a series of connection points that allowed high-level radioactive waste to be transferred from one tank or facility to another.

The two boxes have been out of service for more than 30 years. As part of the closure process, both structures were previously filled with grout, rendering them inoperable.

The boxes were the first ancillary structures closed in this way under SRMC’s liquid waste contract. They are located in the F Tank Farm, a grouping of large underground waste-storage tanks. The liquid waste program at SRS has closed eight of the site’s 51 massive waste tanks by filling them with cementitious grout.

The New Mexico Environment Department (NMED) is adding several conditions to the operating permit for the Department of Energy’s Waste Isolation Pilot Plant (WIPP) near Carlsbad, N.M. The permit changes, which would prioritize the disposal of transuranic (TRU) waste generated in the state and limit the repository’s capacity, are contained in a fact sheet the NMED.

Construction of a backup load-in station has been completed at the Hanford Site’s Effluent Treatment Facility (ETF) in Washington state.

“We broke ground on the backup facility about a year ago,” said Rob Wood, project manager for Washington River Protection Solutions, the Department of Energy’s tank operations contractor at the site. “I am proud of the team for completing this portion of the load-in expansion project and doing it safely. In phase two, expansion of the main load-in station will prepare us for 24/7 operations on the Hanford Site.”

Watch a time-lapse video of the backup load-in station construction here.

Craig Piercy
cpiercy@ans.org

It’s always the first question asked. So, what is your approach? You have options.

You could go the “Yucca Mountain is the law of the land” route. But you’ll soon run into an immutable political truth. Nevada’s early presidential caucuses make it highly unlikely that any candidate would ever take a favorable position on Yucca unless it enjoyed commensurate support in the state. Not convinced? Nevada Gov. Stephen Sisolak signed a bill in August that replaces their closed caucus system with a primary during the first week in February, thereby putting the state in competition with Iowa and New Hampshire to be the “first primary” of the 2024 election. Face it: While you weren’t looking, Nevada secured its consent rights over Yucca Mountain; it’s just written in a different part of the law.

You could also double down on reprocessing/recycling and argue that we need some sort of Manhattan Project. But that requires convincing Congress that it’s a good idea for the government to build large, first-of-a-kind, multibillion-dollar fuel cycle facilities, the economics of which will be based on the estimated price of uranium (or thorium?) some number of decades from now. Good luck with that. As much as a grand solution to the fuel cycle may appeal to our engineering instincts, the funding simply isn’t there—there are no checks left in Washington’s checkbook.

The question of what to do with the radioactive waste has been raised frequently for both fission and fusion. In the 1970s, fusion adopted the land-based disposal option, primarily based on the Nuclear Regulatory Commission’s decision to regulate all radioactive wastes as only a disposal issue, following the fission guidelines. In the early 2000s, members of the Advanced Research Innovation and Evaluation Study (ARIES) national team became increasingly aware of the high amount of mildly radioactive materials that 1-GWe fusion power plants will generate, compared with the current line of fission reactors. The main concern is that such a sizable inventory of mostly tritiated radioactive materials would tend to rapidly fill U.S. repositories—a serious issue that was overlooked in early fusion studies¹ that could influence the public acceptability of fusion energy and will certainly become more significant in the immediate future if left unaddressed, as fusion moves toward commercialization.

Employees have begun emplacing defense-related transuranic (TRU) waste in Panel 8 of the Waste Isolation Pilot Plant (WIPP) in New Mexico, the Department of Energy’s Office of Environmental Management (EM) announced in November. TRU waste is permanently disposed of at WIPP in rooms mined in a Permian salt bed 2,150 feet below the surface.

The scale and duration of a national campaign to transport spent nuclear fuel (SNF) from commercial nuclear power plants around the United States would be unprecedented. A meticulous level of planning that considers many elements is needed to inspire public confidence and support.

Taking waste into outer space would require quite large vehicles, like the Saturn 5 rocket shown here carrying the Apollo 14 crew to the moon. A huge fireball forms underneath the rocket . . . hmm, would that be wise? (Source: NASA)

Nuclear waste disposal presents a frustrating problem far beyond its actual danger. No one has ever been harmed by commercial nuclear waste, and no one is likely to ever be harmed.

But we do have to find a final resting place for nuclear waste as it decays away back to the levels of the ore from which it came.

There are several types of nuclear waste: low-­level waste (LLW), intermediate-­level waste (ILW), transuranic waste (TRU; referring only to bomb waste without a lot of ­cesium-­137 or strontium-­90), high-­level waste (HLW; also only bomb waste), and spent nuclear fuel (SNF; from commercial power plants only). In the United States, TRU waste, HLW, and SNF require deep geologic disposal by law.

In the 1950s, the U.S. Department of Energy constructed the Portsmouth Gaseous Diffusion Plant in rural southern Ohio to enrich uranium, alongside two other federally owned and managed facilities in Oak Ridge, Tenn., and Paducah, Ky. The Cold War-era plant was built as a self-sufficient industrial city with more than 400 buildings and facilities centered around three massive gaseous diffusion process buildings that could enrich the level of the uranium-235 isotope for nuclear fuel in the defense and energy sectors.

While deep geological repositories (DGRs) are the globally preferred and scientifically proven solution to store high-level radioactive waste, societal challenges remain. Given the long time frames associated with DGR development and implementation, and a rise in global interest in nuclear energy to meet urgent climate mitigation targets, building and maintaining human capacity is now even more of a priority.

Contractor employees at the Department of Energy’s Savannah River Site in South Carolina recently exceeded their plutonium downblending goal for 2022 ahead of schedule as part of the ongoing activities to remove Pu from the state, the DOE’s Office of Environmental Management (EM) announced.

Heating of the first waste vitrification melter at the Department of Energy’s Hanford Site was paused after operators identified an “abnormal condition with the startup heater power supplies,” the DOE’s Office of River Protection (ORP) said. Heat-up of the 300-ton melter, which will be used to vitrify Hanford’s low-level radioactive tank waste, was initiated on October 8.

The Department of Energy is providing $38 million in funding for a dozen projects aimed at developing technologies to advance spent nuclear fuel reprocessing, reduce the volume of high-level waste requiring permanent disposal, and provide domestic advanced reactor fuel stocks. The projects are being led by universities, private companies, and national laboratories.

The Department of Energy and its environmental cleanup contractor United Cleanup Oak Ridge (UCOR) are poised to meet critical milestones as they continue to move to the next generation of cleanup at Oak Ridge National Laboratory in Tennessee. On ORNL’s main campus, crews on “Reactor Hill”—so named because of the four remaining reactor facilities on that hillside—and at the Experimental Gas-Cooled Reactor (EGCR) just east of the campus continue rigorous schedules as they enter a new phase of progress in the cleanup program.

The Department of Energy’ Office of Legacy Management (LM) will be conducting verification and validation work at abandoned uranium mines in the Navajo Nation of northeastern Arizona during the fall field season, which runs from mid-October to mid-December.

Crews at the Department of Energy’s Hanford Site, near Richland, Wash., have begun heating up the first of two 300-ton melters that will be used to vitrify mixed low-level radioactive and chemical tank waste. According to the DOE’s Office of Environmental Management (EM), initiating and completing the heating of the melter is a critical step to commissioning Hanford’s Waste Treatment and Immobilization Plant (WTP), which will treat and stabilize the site’s 56 million gallons of tank waste by immobilizing it in glass through the vitrification process.