Abstract: Continuing social concerns over nuclear energy technologies still limit the application of long-term solutions to nuclear waste management in most countries. These concerns result from a lack of public trust in the scientific basis used in the decision-making approach to waste disposal, particularly the siting of a geologic repository.  Also, nuclear waste issues have become intertwined with the discussion of the future of nuclear energy. Moreover, setting aside the technical uncertainties about the long-term behavior of the waste materials under extended geologic disposal conditions, a scientific dilemma exists about how to deal with the preferences of future generations that will have to safely manage the waste. This stalemate situation has motivated an effort to frame the discussion from a different and interdisciplinary perspective.

An innovative approach to nuclear waste management called ENTRUST is proposed. The approach consists of an analytical framework for the holistic assessment of nuclear waste management strategies and policies where the primary focus is on building and maintaining public trust. Based on a careful use of quantitative information for technical issues, ENTRUST seeks to support a participative and deliberative analysis of the policy and narratives on strategies for nuclear waste management and disposal.

Speaker Bio: François Diaz-Maurin is a Nuclear Security Visiting Scholar at CISAC (2017-2019) and a European Commission’s Marie Sklodowska-Curie Fellow (2017-2020).

François’ research at CISAC deals with the issue of the long-term management of nuclear waste produced at commercial power plants in a context of uncertain transitions and persisting social concerns over nuclear energy technologies. His interdisciplinary research seeks to merge quantitative and qualitative methods for the holistic study of nuclear waste management systems and policies.

In this talk, François will be presenting the preliminary results of his 3-year research project entitled “Building Trust in Nuclear Waste Management through Participatory Quantitative Story Telling (ENTRUST)”. The project will contribute to CISAC’s “Reset of U.S. Nuclear Waste Management Policy” science-policy initiative.

François received both B.S. (2004, with distinction) and M.S. (2007, with distinction) degrees in civil engineering from the University of Rennes 1, France, and a Ph.D. degree in environmental science and technology (2013, summa cum laude) from the Universitat Autònoma de Barcelona, Spain. Before joining academia, François spent four years as an engineer in the design of nuclear energy technologies in Paris, France (2007-2008) and in Boston, MA (2009-2010) for AREVA Inc. North America and AREVA Federal Services LLC.

Abstract: Mainland China has undergone a rapid development of nuclear power during the last two decades. The reactors under construction or soon to be constructed there include some of the world's most advanced models. While the average age of the workforce in China’s nuclear industry is still in the early 30s, China has already become largely self-sufficient in reactor design and construction, as well as other aspects of the fuel cycle. They have made full use of western technology while adapting and improving it, and now have set up a “go global” policy for exporting nuclear technology including heavy components to the rest of the world that may seem to be a strong competition to the US nuclear power industry. 

Speaker Bio: Dr. Lumin Wang came to US from China in 1982 and received his PhD in Materials Science from the University of Wisconsin-Madison in 1988. He is a professor in the Department of Nuclear Engineering & Radiological Sciences and the Department of Materials Science & Engineering at the University of Michigan, Ann Arbor (UM). He worked at Argonne National Laboratory and University of New Mexico before joining UM in 1997. Professor Wang’s main research interests are on radiation tolerance of nuclear engineering materials and ion beam modification of materials. Professor Wang has published more than 400 SCI indexed research papers with an h-index above 50. Professor Wang has been serving on the International Committee of American Nuclear Society (ANS) since 2010. He has taken over 100 UM students to China to observe the development of nuclear power there seven summers in a row since 2010. Professor Wang was named as an outstanding nuclear engineering professor in 2008 and an international ambassador in 2013 by UM’s college of engineering. 

Abstract: The short half-life (87.7 yr) of the isotope plutonium-238 makes it ideal for use in radioisotope power systems – nuclear power systems that derive their energy from the heat produced by spontaneous radioactive decay, as distinguished from nuclear fission. ²³⁸Pu has become an important source of power for fuelling NASA unmanned interplanetary spacecraft, and instruments on Mars.  The use of plutonium in space exploration poses interesting policy questions that balance safety against scientific understanding of the solar system. I will provide an overview of the production, safety, component fabrication, and peaceful applications of this very important plutonium isotope.  

About the Speaker: David L. Clark is a Los Alamos National Laboratory Fellow and Director of the Laboratory’s National Security Education Center (NSEC). He joined Los Alamos as a postdoctoral fellow in 1988. Since then he has held various leadership positions at the Laboratory, and become an international authority on the chemistry and physics of the actinides. He has published 170 peer-reviewed publications, encyclopedia and book chapters, and is currently co-editing the 2nd edition of the Plutonium Handbook. He is a CISAC affiliate whose research interests are in the molecular and electronic structure of actinide materials, applications of synchrotron radiation to nuclear security, behavior of actinide and fission products in the environment, the aging effects of nuclear weapons materials, and education and training in actinide science.  

Abstract: Relative to the struggles Western nuclear powered countries have experienced in the recent past, South Korea and China have had notable success building up nuclear power at an impressive scale. China today leads the world in new builds of nuclear reactors. Moving beyond indigenous construction, South Korea is on the verge of completing its first exported power reactor in the UAE, marking an impressive accomplishment for this relatively new nuclear startup. However, China and South Korea now face a challenge other more established nuclear powered countries have yet to solve, an unresolved structure of the back end of the fuel cycle. Despite the uncertainty that exists about the ultimate fate of the spent fuel, the more immediate problem of interim storage is urgent. In this talk, I will review the status and urgency of this problem in the two countries with quantitative results from modeling accumulation, storage and transportation. I will then outline immediate policy mitigations needed in the short term as well as strategies for designing a more permanent solution.

About the Speaker: Rob Forrest is currently a member of the technical staff at Sandia National Laboratories where his research interests include nuclear power, cybersecurity, and nonproliferation. As a member of the systems research group, he specializes in data driven methods and analysis to inform policy for national security.

As a postdoctoral fellow at CISAC, his research focused on one of the most pressing technical issues of nuclear power: what to do with spent nuclear fuel. Specifically, he looked at the more short term issues surrounding interim storage as they affect the structure of the back end of the fuel cycle. He focuses mainly on countries with strong nuclear power growth such as South Korea and China.

Rob’s interest in policy and nuclear issues began during his fellowship in the 2008 Public Policy and Nuclear Threats program at the Institute on Global Conflict and Cooperation at UC San Diego. In 2010, he also participated in the PONI Nuclear Scholars Initiative at CSIS.

Before coming to CISAC in 2011, Rob received his Ph.D. in high-energy physics from the University of California, Davis. Most of his graduate career was spent at Fermi National Accelerator Laboratory (Fermilab) in Batavia, IL where he performed a search for signs of a theory called Supersymmetry. Before beginning his graduate work, Rob spent two years at SLAC National Accelerator Laboratory. In 2001, Rob earned his B.S. in physics from the University of California, San Diego where, throughout his undergraduate career, he worked for NASA. 

Abstract: Since their conception in the 1950s, thorium reactors have been promoted as a promising technology for nuclear energy generation, though they have not yet been successfully commercialized. Proponents of thorium reactors argue that they are safer, produce less waste, and are proliferation-resistant, compared with uranium-fueled light water reactors used around the world today. The central question guiding this research concerns the final claim. Is the thorium fuel cycle inherently more resistant to nuclear weapons proliferation than the traditional uranium fuel cycle?

Advocates argue that the thorium fuel cycle is less vulnerable to proliferation of nuclear weapons technology because little or no plutonium is produced. Additionally, fissile U-233 is claimed to be “self-protected” by U-232, which is produced with U-233 and decays through Tl-208, emitting highly energetic gamma radiation. But the amount of U-232 generated depends on reactor operation. Furthermore, the U-232 content can be further decreased by conducting chemical separations at the back-end of the fuel cycle.

This presentation will discuss the proliferation risks of the thorium fuel cycle. The potential for generating large stockpiles of isotopically pure U-233 by conducting protactinium separations at the back end of the fuel cycle is examined as a new proliferation pathway that current IAEA safeguards may not be prepared to address.

About the Speaker: Eva C. Uribe is a Stanton Nuclear Security Postdoctoral Fellow at CISAC for the 2016-2017 academic year. Her research involves identifying proliferation pathways in the thorium fuel cycle and assessing the potential impact and implications of U-233 stockpile generation on the international nonproliferation regime. Eva received a Ph.D. in Chemistry from the University of California, Berkeley in 2016. Her dissertation research focused on structural analysis of organically-modified porous silica surfaces for the extraction of uranium from aqueous solutions using nuclear magnetic resonance spectroscopy. In 2011 Eva received a B.S. from Yale University with a double major in Chemistry and Political Science. She served as a Next Generation Safeguards Initiative intern with the Nonproliferation Division at Los Alamos National Laboratory in 2008 and 2009.

Abstract: This talk examines ideologies of knowledge and expertise in the global governance of nuclear technology through an ethnographic study of the International Atomic Energy Agency’s Department of Safeguards. It considers how changes in the way that the IAEA carries out international nuclear safeguards have become the subject of increasing controversy in the last 15 years. This controversy provides fertile ground for understanding the role of knowledge and the functioning of bureaucracy in international governance. I will show that the critiques addressed against the new safeguards system reveal not only political alignments and struggles for power, but also uncover global and regional assumptions about how a technical bureaucracy is supposed to produce knowledge. In closing, I will propose how nuclear safeguards might be adapted to a changing security environment without threatening the IAEA's expert authority or politically discriminating against states.

About the Speaker: Anna M. Weichselbraun is a Nuclear Security Postdoctoral Fellow at CISAC. She received her PhD in anthropology from the University of Chicago in August 2016. Anna's dissertation, based on 24 months of ethnographic fieldwork and multi-archival research, investigates how nuclear safeguards inspectors, bureaucrats, and diplomats at the IAEA negotiate the international and institutional boundaries of politics and technology in their working lives. She asks how organizational products such as bureaucratic procedures, technical inspection reports, policy papers, and official diplomatic statements contribute to the logical ordering of technocratic expertise within the IAEA. She is especially interested in how individuals at international organizations communicate across different epistemic paradigms, and how particular types of knowledge become recognized as authoritative and legitimate. In addition to revising her dissertation into a book manuscript, she is also conducting preliminary research on networks of nonproliferation experts and their spheres of influence.