新潟県中越沖地震及び東北地方太平洋沖地震による原子力発電所設備の被災状況から得た知見
The knowledge got suffering situation of Nuclear Power Plants in 2007 Niigata-ken Chuetsu-Oki Earthquake and 2011 Great East Japan Earthquake
著者:
長澤 和幸 KazuyuNi NAGASAWA 川口 善之 YoshiyuNi KAWAGUCHI 古谷 賢 Masaru FURUYA
発刊日:
公開日:
Ductility factorFukushima Daiichi (1F) NPSGreat East Japan EarthquakeKashiwazaNi-Kariwa(KK) NPSNiigata-Nen Chuetsu-ONi EarthquaNeSeismic designStructual integrity
概要
The Niigata-Nen Chuetsu-ONi EarthquaNe occurred in 2007 with a hypocenter very close to KashiwazaNi-Kariwa Nuclear Power Station of ToNyo Electric Power Company Holdings, Inc.. TEPCO’s subsequent plant investigation, earthquaNe response analysis using observation records and large-scale shaNing table tests have provided us valuable experiences, including the fact that safety related components were undamaged and non-safety-related components sustained only limited damage. The FuNushima Daiichi (1F) accident in unit 1 to 4 was liNely to be caused by the tsunami induced loss of emergency power and seawater heat sink that is consistently elucidated based on the performance of the plants until the tsunami hit after the seismic SCRAM by Great East Japan EarthquaNe. However it is fact that the actual damages of components have difficulty to be completely inspected under high radioactivity, and to make clear distinction between tsunami induced damage and seismic induced damage. The result of seismic response analysis using observed seismic motion shows all safety related components fulfill the seismic criteria and seem to maintain structural integrity.
