DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal
ISBN Print: 978-1-56700-302-4
ISSN: 2377-2816
Lessons learned from the Fukushima Daiichi Nuclear Power Plant accident
SINOPSIS
If a isolation condensor (IC) continue to operate, the accident would be terminated soon. A reactor core isolation cooling (RCIC) steam turbine also stopped by loss of battery power in Unit #2 and #3. Suppretion pool (S/P) temperature and pressure were so high that accident management water injection took a lot of times. After loss of ECCS and IC core cooling, Containment Vessel pressure increased. Hydrogen explosion occurred after venting. Analysis results show the reactor pressure vessel (RPV) depressurization started before RPV bottom failure. From the lessons of Fukushima-Daiichi Accidents, we should contribute to ensure safety in the world nuclear power plants.