May 6, 2010
 
DEPLETED URANIUM: Dangers of Uranium Buried in the Ground
And, It Has Resale Value; Portsmouth Meeting 6 p.m. Thursday
 
By Tony Rutherford
Huntingtonnews.net Reporter
 
Huntington, WV (HNN) – Having agreed to compensation for Cold War era atomic energy workers who developed cancer and other illnesses, the D.O.E. and other entities of the government have been searching for a solution to nuclear waste. Nuclear power represents an alternative to fossil fuels, but solutions to the lingering radioactive half lives of elements like uranium have not been resolved.
 
For instance, after receiving a report on the severity of the contamination (uranium, nickel and non-uranium) at the Huntington Pilot Plant / Reduction Pilot Plant, a decision was made in 1978-1979 to tear it down. The remains of the production apparatus, ( i.e. hoses), as well as the walls and girders were buried in a classified contaminated location at the Portsmouth Gaseous Diffusion Plant in Piketon, Ohio.
 
The Portsmouth, Paducah, Oak Ridge and Huntington facilities worked both on uranium enrichment and recycling nickel from depleted uranium. Site Specific Meetings --- the next Thursday, May 6 at 6 p.m. at the OSU Endeavor Center --- are ongoing. They are part of a decision making process --- what will be placed on the site of the former gaseous diffusion plant, what will be done with waste buried there, what will be done with waste stored there?
 
(Editor’s Note: Documents have confirmed that the HPP/RPP processed nickel powder and recycled scrap uranium from barrier materials at the diffusion plants. Some distinctions exist between “enriched” uranium and “depleted” uranium. We’re uncertain whether the “depleted” uranium was /is stored at diffusion plants or transported between various plants.)
 
According to Wikipedia, “About 95 percent of the depleted uranium produced is stored as uranium hexafluoride, a crystalline solid, (D)UF6, in steel cylinders in open air storage yards close to enrichment plants. Each cylinder holds up to 12.7 tonnes (or 14 short tons) of UF6. In the U.S. 560,000 tonnes of depleted UF6 had accumulated by 1993. In 2008, 686,500 tonnes in 57,122 storage cylinders were located near Portsmouth, Ohio and Paducah, Kentucky.
 
The storage of DUF6 presents environmental, health, and safety risks because of its chemical instability. When UF6 is exposed to water vapor in the air, it reacts with the moisture to produce UO2F2 (uranyl fluoride), a solid, and HF (hydrogen fluoride), a gas, both of which are highly soluble and toxic.
 
As previously stated concerning cylinders stored at the Portsmouth facility, some corrosion has been anticipated. Due to the time the Huntington Pilot Plant materials --- and other classified materials --- were buried in 1979, an inspection for leaks and/or consideration of new containment protection is overdue.
 
“Storage cylinders must be regularly inspected for signs of corrosion and leaks and are repainted and repaired as necessary. The estimated life time of the steel cylinders is measured in decades,” the web encyclopedia stated.
 
However, these cylinders of waste have become valuable due to the prices of uranium and nickel.
 
“A ten-fold jump in uranium prices has transformed approximately one-third of the U.S. depleted uranium inventory into an asset worth $7.6 billion, assuming DOE re-enriches the tails. This estimate is based on February 2008 market price for uranium and enrichment services, and DOE's access to sufficient uranium enrichment capacity,” the online reference source stated.
 
The U.S. government has been converting DUF6 to solid uranium oxides for use or disposal. Such disposal of the entire DUF6 inventory could cost anywhere from $15 million to $450 million.
 
From a research paper, “Depleted Uranium: Ethics of the Silver Bullet” by Iliya Pesic (Santa Clara University), HNN obtained the following data:
 
Uranium is one of the heaviest elements found in nature and is emits alpha, beta, and gamma particles. It is 1.7 times denser than lead.12 The half-life of U238 (DU is 99% U238) is 4.5 billion years!13 Uranium byproducts(such as Thorium (Th232)) have even longer half-lives, making uranium an element that gets more radioactive during its own decay process.5 Natural uranium is 99.274% U238, 0.720% U235, and 0.0055% U234.14a Uranium is enriched when its contents of U235 reaches 3.2-3.6% (since U235 is fissible). Weapon-grade uranium is +90% U235.14a
 
What is depleted uranium? We start out with natural uranium and extract enriched uranium for nuclear fuel and weaponry. The leftover from the extraction process is something very similar to natural uranium, known as “depleted uranium”. The only difference is that DU has 0.202% of U235 and 0.0008% of U234
 
How much DU do we currently have? As of June 1998, we have around 57,800 huge steel cylinders of DU or 496,000 metric tons. 14b Storage of DU is very complicated and problematic since corrosion of DU storage cylinders often occurs over relatively short periods of time.”
 
The full paper can be found at, click: http://cseserv.engr.scu.edu/StudentWebPages/IPesic/ResearchPaper.htm



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