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Seven decades after scientists came here during World War II to create plutonium for the first atomic bomb, a new generation is struggling with an even more daunting task: cleaning up the radioactive mess.
The U.S. government is building a treatment plant to stabilize and contain 56 million gallons of waste left from a half-century of nuclear weapons production. The radioactive sludge is so dangerous that a few hours of exposure could be fatal. A major leak could contaminate water supplies serving millions across the Northwest. The cleanup is the most complex and costly environmental restoration ever attempted.
The volume of waste, its complex mix of highly radioactive and toxic material, the size of the processing facilities — all present technical challenges with no proven solution. The plant is as big as the task: a sprawling, 65-acre compound of four giant buildings, each longer than a football field and as tall as 12 stories high.
The plant will separate the waste's high- and low-level radioactive materials, then blend them with compounds that are superheated to create a molten glass composite — a process called "vitrification." The mix is poured into giant steel cylinders, where it cools to a solid form that is safe and stable for long-term storage — tens of thousands of glass tubes in steel coffins.
A cleanup that once started will take 30 years.
It's never been done before and no one knows precisely if it will even work.
The project is over budget and will not begin until 2019, despite efforts to have it up and running last year.
Almost 200 tanks of nuclear waste...tanks that are now beginning to leak.
I also took a quick look in google earth and noticed that there are quite a few circular farms in the vicnity of Hanford, Wa, all surrounding the site. I wonder what is grown in those farms around the plants?
They would be smarter than that,right?
Hanford was a small agricultural community in Benton County, Washington, United States. It was evacuated in 1943 along with the town of White Bluffs in order to make room for the nuclear production facility known as the Hanford Site. The town was located in what is now the "100F" sector of the site. The original town, named for the judge and irrigation company president Cornelius Hanford,[1] was settled in 1907 on land bought by the local power and water utility. In 1913, the town had a spur railroad link to the transcontinental Chicago, Milwaukee and St. Paul Railway, also known as 'the electric railroad.' By 1925 the town was booming thanks to high agricultural demand, and it boasted a hotel, bank, and its own elementary and high schools. The town was condemned by the Federal government to make way for the Hanford site. Residents were given a thirty day eviction notice on March 9, 1943.[1] Most buildings were destroyed, with the notable exception of the high school. It was used during WWII as the construction management office. The school still stands today, marred by its use during the years for SWAT practice, and can be seen from the Hanford tour bus operated by the U.S. government. [edit] References
Originally posted by jadedANDcynical
reply to post by snowspirit
They would be smarter than that,right?
Did you really just ask that question?
Think about who you're talking about here...
Originally posted by TheRedneck
But tanks of leaking nuclear waste in an earthquake-ridden, overloaded, disrepaired nuclear waste facility? Not my definition of stunning, sorry.
emphasis mine
The primary pathway for movement of radionuclides from the DOE-SC PNNL Site to the public is the atmosphere. As of 2011, other pathways were determined not to be relevant, such as surface water and groundwater pathways, and the air pathway is only evaluated for particulate releases (Barnett et al. 2010). The significance of a pathway is determined from measurements and calculations that estimate the amounts of radioactive materials transported along the pathway, and by comparing contaminant concentrations, or potential doses, to environmental and public health protection standards or guides. A pathway can also be evaluated based on prior studies and observations of radionuclide movement through the environment and food chains. Calculations based on effluent data show the expected contaminant concentrations off the DOE-SC PNNL Site to be low for all potential radioactive air emissions and could frequently be below the levels detectable by current measurement technologies. For radionuclides released from major and minor emissions units, air concentrations at levels of significance for dose impacts are at detectable levels.
Hanford Site waste accounts for nearly two-thirds by volume of the nuclear waste in the DOE complex. The site contains vast amounts of both radioactive and hazardous wastes. Currently, about 10 percent of Hanford Site©s waste is radioactive, and 75 percent of the site's waste is contaminated with both radioactive and hazardous components. The most abundant contaminants are tritium, carbon tetrachloride, chromium, nitrates, cobalt, strontium, cesium, technetium, iodine, plutonium, and uranium. The disposal facilities at the Hanford Site are operated by the Waste Management (200 Area Burial Grounds) and the Environmental Restoration program. As of 2008, more than 3.9 million m3 of LLW has been disposed of, which is only about 17 percent of the total estimated available disposal volume, leaving nearly 20 million m3 for future waste disposal (IAEA 2011a).
Studies have concluded that earthquakes can occur in the following six different tectonic environments (earthquake sources) at the Hanford Site (Geomatrix 1996): • Major Geologic Structures. Reverse/thrust faults in the CRBG associated with major anticlinal ridges such as Rattlesnake Mountain, Yakima Ridge, and Umtanum Ridge could produce some of the largest earthquakes. • Secondary Faults. These faults are typically smaller (1 to 20 km in length) than the main reverse/ thrust faults that occur along the major anticlinal ridges (up to 100 km in length). Secondary faults can be segment boundaries (tear faults) and small faults of any orientation that formed along with the main structure.
Etc.
Sorry to sound glum. On some other days I enter a bubble of optimism and dare to hope that things will somehow work out.
Originally posted by snowspirit
reply to post by jadedANDcynical
I also took a quick look in google earth and noticed that there are quite a few circular farms in the vicnity of Hanford, Wa, all surrounding the site. I wonder what is grown in those farms around the plants?
That might be a good idea to find out. Hopefully it's something that absorbs radiation, and not some type of food that they're selling to the public.
They would be smarter than that, right?edit on 4-2-2012 by snowspirit because: (no reason given)
emphasis mine
Biota (aquatic animals, terrestrial plants, and terrestrial animals) require protection from adverse impacts of radiological emissions under DOE Order 458.1. Biota dose evaluations could be conducted using the DOE Technical Standard, A Graded Approach for Evaluating Radiation Doses to Aquatic and Terrestrial Biota (DOE 2002). Environmental pathways important to biota dose determinations typically result from sampling soil, sediment, and water. It was determined through a Data Quality Objective process (Barnett et al. 2010) that only air sampling was relevant for the DOE-SC PNNL Site at this time. Therefore, neither biota sampling nor biota dose evaluations are performed at present. The results of the pathway analysis and exposure assessment serve as the bases for future years’ surveillance program designs.