Nuclear Issues

Safety has always been an important criterion for designing nuclear reactors, but in addition to safety, there are at least four other values that play a key role, namely, security (i.e., sabotage and proliferation), sustainability (i.e., environmental impacts, energy resource availability), economic viability (i.e., embarking on new technology and its continuation), as well as intergenerational justice (i.e., what we leave behind for future generations). This chapter reviews the evolution of generations of nuclear reactors (I, II, III, III, and IV) in terms of these values.

Despite substantial progress in improving nuclear security in recent years, there is more to be done.  The threats of nuclear theft and terrorism remain very real.  This paper recommends learning from the much stronger national and international efforts in nuclear safety, and in particular taking steps to build international understanding of the threat; establish effective performance objectives; assure performance; train and certify needed personnel; build security culture and exchange best practices; reduce the number of sites that need to be protected; and strengthen the international framework and continue the dialogue once leaders are no longer meeting regularly at the summit level.

Through structured interviews and a literature review, we assess which approaches to protection against insider thefts in the casino and pharmaceutical industries could be usefully applied to strengthen protections against insider theft in the nuclear industry, where insider thefts could have very high consequences.

Before the Fukushima Daiichi nuclear accident, China had big nuclear expansion plans, with more than 40 reactor units under construction or in planning. The Fukushima disaster led China to conduct safety inspections of all its reactors and to suspend nuclear project approvals until a new nuclear safety plan could be adopted. Under Beijing's new safety regulatory system, reactors that are operating or under construction will be spared major redesign, but future projects will face re-engineering, perhaps leading the Chinese to adopt safer third-generation reactor designs created by Chinese firms.

The Summer 2011 issue of the Belfer Center newsletter features analysis and advice by Belfer Center scholars regarding the historic upheavals in the Middle East and the disastrous consequences of the earthquake and tsunami in Japan. The Center’s new Geopolitics of Energy project is also highlighted, along with efforts by the Project on Managing the Atom to strengthen nuclear export rules.

"Without energy, there is no economy. Without climate, there is no environment. Without economy and environment, there is no material well-being, no civil society, no personal or national security. The overriding problem associated with these realities, of course, is that the world has long been getting most of the energy its economies need from fossil fuels whose emissions are imperiling the climate that its environment needs."

"I would urge every scientist and engineer with an interest in the intersection of S&T with sustainable well-being...to 'tithe' 10% of your professional time and effort to working in these and other ways to increase the benefits of S&T for the human condition and to decrease the liabilities. If so much as a substantial fraction of the world's scientists and engineers resolved to do this much, the acceleration of progress toward sustainable well-being for all of Earth's inhabitants would surprise us all."

Hui Zhang re-examines the North Korean explosion on October 9, 2006. His research suggests that the test was likely not a failure if Pyongyang had planned for a yield of 4 kt, as it told Beijing prior to the event.

Article in The Nonproliferation Review

Hui Zhang provides a path-breaking technical assessment of the Korean nuclear test, publishing a comment (with co-authors Jungmin Kang and Frank von Hippel) on the test and the limits of nuclear forensics in Arms Control Today.