Oak Ridge Today
UT receives DOE funds, ORNL help for spent nuclear fuel studies
Posted at 10:05 am September 26, 2013
By University of Tennessee Leave a Comment
KNOXVILLE—The question of what to do with spent nuclear fuel in the U.S. has never been definitively answered. A University of Tennessee in Knoxville professor has received funding from the U.S. Department of Energy to develop new capabilities for evaluating potential alternatives to directly disposing of used fuel.
The award is part of the DOE's 2013 Nuclear Energy University Programs which is awarding $42 million to 38 American universities and colleges for nuclear energy research and development projects focused on developing innovative solutions.
A proposal by Steven Skutnik, assistant professor in nuclear engineering, was awarded $755,000 to develop new capabilities for a fuel cycle simulator called CYCLUS by building on an Oak Ridge National Laboratory software package for nuclear fuel modeling called ORIGEN.
The resulting tool, called a flexible reactor analysis module, will allow scientists to assess the relative benefits of different choices for managing spent nuclear fuel such as directly disposing of it, storing it for extended periods of time, or reprocessing it to recover materials for reuse as fuel in a reactor.
Many countries choose to chemically reprocess their used nuclear fuel, which can extract more energy out of fuel and reduce the total long-lived waste. However, the U.S. has a long-standing policy in which used nuclear fuel is designated for direct disposal. Recently, a plan to dispose of spent fuel at Yucca Mountain in Nevada has been scrapped leaving the nation without a long-term home for the radioactive material.
Thus, the DOE is investigating several alternative fuel cycle strategies. Skutnik's project will help assess how different fuel cycle choices influence factors such as the demand for raw resources, nuclear waste management, and nuclear facility designs.
"We will look at more kinds of fuel cycles by mapping out what the fuel will look like," Skutnik said. "So, we can look at the effect of irradiating fuel for longer times—which is like squeezing just a little more juice out of an orange—or new reactor types or even speculative fuel cycles, such as those based on reactors which use long-lived waste products from current reactors as fuel for future reactors. Using these tools opens up a lot more doors in terms of both sensitivity and the kinds of scenarios we can look at."
The goal is to help the public and policymakers understand the impacts and trade-offs of various nuclear fuel cycle options.
"If we're going to consider significant changes to policies which impact the nuclear fuel cycle, it's helpful to have tools to tell us what we can expect the impacts are going to be," Skutnik said.
Collaborating institutions are ORNL and National Nuclear Laboratory in the United Kingdom.
The NEUPs support multifaceted projects to develop breakthroughs for the U.S. nuclear energy industry. Universities lead the three-year projects, working in collaboration with the nuclear industry, national laboratories and international partners.
For more information on the specific awards, visit http://www.neup.gov.
Filed Under: College, Education, Oak Ridge National Laboratory, Science, Top Stories, U.S. Department of Energy Tagged With: CYCLUS, flexible reactor analysis module, National Nuclear Laboratory, NEUP, Nuclear Energy, Nuclear Energy University Programs, nuclear engineering, nuclear fuel, Oak Ridge National Laboratory, ORIGEN, ORNL, reactor, research and development, software, spent nuclear fuel, Steven Skutnik, University of Tennessee, used fuel, UT, waste, Yucca Mountain
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