China. Annex 1.7 [National experiences on implementing safety improvements at existing nuclear power plants]

After the 2011 Fukushima Daiichi nuclear power plant accident happened in Japan, under the unified plan of the state council, China National Nuclear Safety Administration (NNSA) together with the National Energy Administration and the China Seismological Bureau and other relevant departments, have carried out a comprehensive inspection for all nuclear power plants (NPP) operating and under construction in mainland of China between March and December in 2011. The inspections were mainly based on China's current effective nuclear safety laws, regulations and technical standards, as well as the latest safety standards issued by IAEA and the preliminary experience and lessons exposed by Fukushima Daiichi nuclear power plant accident. The comprehensive inspection included 11 key areas, which were as follows: – The suitability of external events assessed during site selection; – Assessment of flood control plan and flood control capability for nuclear facilities; – Assessment of earthquake resistance plan and seismic capacity for nuclear facilities; – The effectiveness of quality assurance system of nuclear facilities; – Inspection of fire protection system of nuclear facilities; – Prevention and mitigation measures of accidents induced by multiple extreme natural events; – The analysis of Station Black-out accident, the availability of additional power supply after the loss of emergency power and emergency plans; – Severe accident prevention and mitigation measures and their reliability evaluation; – Plans coping with group incidents; – The effectiveness of environmental monitoring and emergency system; – Other possible weakness.