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Invention could make spent nuclear fuel useful for irradiation purposes
Date:4/4/2013

CORVALLIS, Ore. A researcher at Oregon State University has invented a way to use spent nuclear fuel to produce the gamma rays needed to irradiate medical supplies, food and other products an advance that could change what is now a costly waste disposal concern into a valued commodity.

The technology, if widely implemented, might allow each of the 104 nuclear reactors in the United States to create a revenue stream of $10 million a year while providing thousands of new jobs. And by lowering the cost of irradiation, it could become commercially feasible for a wider range of uses.

A provisional patent has been issued on the technology, and commercialization efforts are under way through a private company, G-Demption LLC, created for that purpose.

"This is essentially a way to re-use spent nuclear fuel for a valuable purpose," said Russell Goff, a masters student in the OSU Department of Nuclear Engineering and Radiation Health Physics. "Until now no one really thought to do this. But this approach is safe, practical and economical. Instead of treating all nuclear waste as a disposal problem, we could be putting much of it to good use."

Irradiation is a growing industry, and is commonly used in the sterilization of medical supplies such as bandages or syringes. It's also widely approved for helping to preserve foods many spices, and some fruits and meat products are irradiated. The use of gamma radiation for these purposes does not make the underlying product radioactive, and generally has no effects on it that are any more pronounced than other sterilization or preservation technologies.

However, the gamma ray sterilization industry is constrained by the need for cobalt 60, the radioactive isotope most commonly used.

"The U.S. already uses about half of the world's supply of cobalt 60 for various types of irradiation, and the process can be expensive," Goff said. "The new system we've created should be sign
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Contact: Russell Goff
Russell@G-Demption.com
515-231-0736
Oregon State University
Source:Eurekalert

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