The Nuclear Safety Research Center of Japan Atomic Energy Agency (JAEA-NSRC) technically supports nuclear regulation. Our research activities cover extensive areas including reactor, materials, fuel cycle, environment, waste. This presentation looks back on the impact of the Fukushima Daiichi NPS (1F) accident on our activities specifically on reactor safety research.
Before the 1F-accident, Japanese regulatory requirement for reactor facilities was safety ensuring against Design Basis Accidents and, accordingly, our primary research target was the prevention of Severe Accident (SA). The 1F-accident, however, revealed our wrong awareness of SA being a hypothetical event and triggered expansion of our research scope. Now we put much resource into the research for SA mitigation, source term evaluation, off-site consequence evaluation and accident preparedness. In addition, JAEA is serving as a channel to share 1F-accident information internationally by operating OECD/NEA joint projects aiming at 1F information collection, analysis, evaluation and so on.
What important in future is maintaining the adequate level of human and financial resources for safety research, including that for SA, and keeping motivation to improve safety. JAEA-NSRC will utilize our experimental facilities, including new ones built after the 1F-accident, for safety research of existing nuclear installations as well as of newly developed technologies, such as accident tolerant fuels and small modular reactors, and educate researchers who can tackle specific phenomena and can overview the safety of nuclear systems.