Tag

Radioactive Waste

All articles tagged with #radioactive waste

Vermont Yankee Decommissioning Completes 45 Years Early as Reactor Building Demolished
energy16 days ago

Vermont Yankee Decommissioning Completes 45 Years Early as Reactor Building Demolished

NorthStar Group Services has completed the physical demolition of the Vermont Yankee nuclear plant, finishing the process 45 years ahead of the original schedule. The five-story reactor building was dismantled, and 28,000 cubic yards of radioactive concrete were shipped to a disposal site in Texas. The site is now filled with clean crushed rock, with only spent fuel casks remaining on-site.

US Radioactive Waste Drums Remain Scattered Across San Francisco Seafloor
environment23 days ago

US Radioactive Waste Drums Remain Scattered Across San Francisco Seafloor

Between 1946 and 1970, the United States dumped approximately 47,800 containers of radioactive waste into the Pacific Ocean west of San Francisco. These steel drums, weighted with concrete, were not designed for long-term containment but merely to survive the descent to the seafloor. Due to poor navigation and lack of detailed record-keeping, many containers missed their designated sites, scattering across 1,400 square kilometers of seabed, much of which now lies within the Greater Farallones National Marine Sanctuary. While a 1981 review suggested the radioactivity had decayed to negligible levels, later studies found isotope signatures in local fish that differed from weapons fallout. Despite the ban on ocean dumping in 1994, no agency has proposed retrieving the drums, as the cost outweighs the measured hazard.

Deep-sea throwback: survey confirms 200,000 barrels of radioactive waste in the Northeast Atlantic
science2 months ago

Deep-sea throwback: survey confirms 200,000 barrels of radioactive waste in the Northeast Atlantic

A French expedition under the NODSSUM program found that more than 200,000 barrels of mid-20th-century radioactive waste dumped in the Northeast Atlantic have leaked, with cobalt-60, niobium-94, cesium-137 and americium-241 detected in sediments; several barrels are corroded and now host marine life, and researchers will analyze samples to determine the extent of leakage.

Northeast Atlantic dumping legacy: surveys confirm leaking radioactive barrels on the seafloor
science2 months ago

Northeast Atlantic dumping legacy: surveys confirm leaking radioactive barrels on the seafloor

A French expedition using the Nautile deep-sea submersible confirmed that more than 200,000 barrels dumped in the Northeast Atlantic in the 1960s–70s have leaked radioactive material, with radionuclides such as cobalt-60, niobium-94, cesium-137, and americium-241 detected above background levels near corroded containers on the seabed. Marine life now grows on some barrels, while researchers collected sediment, water, and biota samples to assess contamination. The waste was not designed for containment and may have dispersed over time; ongoing lab analyses and prior mapping are helping OSPAR evaluate the dumping legacy.

Deep Atlantic finds reveal 200,000 leaking radioactive waste barrels on the seafloor
environment2 months ago

Deep Atlantic finds reveal 200,000 leaking radioactive waste barrels on the seafloor

An international, French-led expedition descended about 15,400 feet into the Northeast Atlantic to directly observe more than 200,000 barrels of largely corroded, low‑level radioactive waste dumped in the latter half of the 20th century, with material spilling onto the seafloor. On-site measurements detected radionuclides such as cobalt-60, niobium-94, cesium-137 and americium-241 above background levels, though scientists caution this is not yet a final ecological verdict. A 2025 mission mapped thousands of barrels with the Ulyx robot to guide 2026 close‑range dives, which also noted deep‑sea life colonizing the waste sites. Researchers say more laboratory work is needed to determine exact concentrations, how radionuclides move through sediment and water, and whether deep‑sea organisms are absorbing them, while international efforts (OSPAR) continue to study historic dumping practices and their ecological implications.

NASA Discovers Secret Cold War Base Beneath Greenland's Ice
science-and-environment1 year ago

NASA Discovers Secret Cold War Base Beneath Greenland's Ice

NASA's recent radar scans of the Greenland Ice Sheet have revealed the Cold War-era Camp Century, a secret military base built by the U.S. Army in 1959 and abandoned in 1967, still buried 100 feet under the ice. Originally intended as a nuclear missile launch site, the base contains radioactive waste that poses environmental risks due to climate change, which could expose or move the waste unpredictably. The discovery highlights the need for better modeling of climate impacts on such hidden hazards.

Semi Truck Fire with Radioactive Waste Prompts I-40 Reopening
transportation2 years ago

Semi Truck Fire with Radioactive Waste Prompts I-40 Reopening

A semi-truck carrying radioactive waste caught fire near exit 240A and I-40 W in Nashville, causing the closure of I-40 West for several hours. The Tennessee Department of Transportation has since reopened both eastbound and westbound traffic. The Nashville Fire Department worked to cover the truck with tarp and move it to clear the lane, and inspections were conducted to ensure the truck's safety for continued travel.

"Nashville's I-40 Reopens After Radioactive Waste Semi Fire"
transportation2 years ago

"Nashville's I-40 Reopens After Radioactive Waste Semi Fire"

A semi fire carrying low grade radioactive waste shut down westbound lanes of I-40 near White Bridge Road in Nashville. The Nashville Fire Department responded to the scene and reported that the hazardous material was isolated to its packaging, with no injuries reported. After the decontamination process, the lanes have been reopened and the scene is being turned over to Tennessee Department of Transportation, Tennessee Highway Patrol, and Tennessee EMA for further inspections.

Interstate 40 Reopens in Nashville After Hazmat Incident
safety2 years ago

Interstate 40 Reopens in Nashville After Hazmat Incident

Interstate 40 in Nashville was closed in both directions after a semi-truck carrying low-grade radioactive waste caught fire, causing traffic backups for miles. The Nashville Fire Department reported that no hazardous levels were detected, and the waste was isolated to its packaging. Eastbound lanes have since reopened, but westbound lanes remained closed for an extended period, with the Tennessee Emergency Management Agency setting up a command post to investigate.

Japan's Fukushima Plant Continues Controversial Release of Treated Radioactive Water
environment3 years ago

Japan's Fukushima Plant Continues Controversial Release of Treated Radioactive Water

Japan faces a complex and lengthy challenge in decommissioning the Fukushima Daiichi nuclear plant, which was severely damaged in the 2011 tsunami and subsequent nuclear disaster. The process is expected to take between 30 and 40 years, much longer than usual due to unique challenges such as widely dispersed fuel and high radiation levels. The accumulation of treated radioactive wastewater has hindered progress, and Japan has faced criticism for its plan to discharge the water into the ocean. The full extent of the damage inside the reactors is still unknown, and financial considerations, including compensation and specialized equipment, contribute to the estimated final cost of $141 billion. Despite the challenges, there is hope that the decommissioning process will eventually make the area safe for people to return.