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.

Each year, the Science, Technology, and Public Policy (STPP) Program at the Belfer Center for Science and International Affairs at the Harvard Kennedy School welcomes new pre- and post-doctoral fellows and visiting researchers to a select team of scholars exploring the critical role that science and technology play in everyday life.

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.

This week, when the leaders of the G8 industrial democracies gather in France, their meeting will include discussions of what steps must be taken to strengthen global nuclear safety and global nuclear security  in the aftermath of the tragedy at Fukushima. The Belfer Center's Matthew Bunn and Olli Heinonen suggest new actions the world community should take in five key areas in order to prevent another Fukushima.

Recent national trends in investments in global energy research, development, and demonstration (RD&D) are inconsistent around the world. Public RD&D investments in energy are the metric most commonly used in international comparative assessments of energy-technology innovation, and the metric employed in this article. Overall, the data indicate that International Energy Agency (IEA) member country government investments have been volatile: they peaked in the late 1970s, declined during the subsequent two decades, bottomed out in 1997, and then began to gradually grow again during the 2000s.

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.

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.