Nuclear Issues

A presentation by Hui Zhang, Senior Research Associate with the Project on Managing the Atom, to the Online International Symposium "Growing Plutonium Stockpiles and the Rokkasho Reprocessing Plant—Reality of Nuclear Fuel Cycle and Security in East Asia."

On December 6, 2021, Managing the Atom Senior Research Associate Hui Zhang presented to a virtual meeting of the National Academies of Sciences, Engineering, and Medicine Committee on Merits and Viability of Different Nuclear Fuel Cycles and Technology Options and the Waste Aspects of Advanced Nuclear Reactors. 

While China is building nuclear reactors faster than any other country in the world, major constraints may limit nuclear energy’s ability to grow to the scale of hundreds of gigawatts that would be required for it to play a major part in decarbonizing China’s energy system. This chapter explores the major constraints on, and risks of, large-scale nuclear energy growth in China, and how both new policies and new technologies might address them. It focuses particularly on the two biggest constraints – economics and siting. Substantial government policies to support nuclear power and advanced reactor systems designed to address some of the key constraints are both likely to be needed for nuclear to have a chance of playing a major role in decarbonizing China’s energy system; nuclear energy’s role may be bigger in the second half of this century than in the first half.

Since 2015 China has shown it is quickly modernising its nuclear force through adding more and “better” intercontinental ballistic missiles (ICBMs) and multiple independently targetable re-entry vehicles (MIRVs).Based on Chinese publications and Western governmental and non-governmental estimates, this author estimates that in 2020 China has a total inventory of approximately 360±50 nuclear warheads. This stockpile is likely to grow further over the next decade as additional nuclear capable missiles become operational. In particular, China nuclear force modernization has been driven mainly by expansion in US missile defence programmes as many Chinese believe. China’s arsenal may be somewhat larger than France’s but is much smaller than the US and Russia.