(Lessons in category 1) Strengthen preventive measures against a severe accident
(1) Strengthen measures against earthquakes and tsunamis
(2) Secure power supply
(3) Secure robust cooling functions of reactor and PCV
(4) Secure robust cooling functions of spent fuel pools
(5) Thorough accident management (AM) measures
(6) Response to issues concerning the siting with more than one reactor
(7) Consideration on placements of NPS in basic design
(8) Ensuring the water tightness of essential equipment facilities
(Lessons in Category 2) Enhancement of response measures against severe accidents
(9) Enhancement of prevention measures of hydrogen explosion
(10) Enhancement of containment venting system
(11) Improvement of accident response environment
(12) Enhancement of the radiation exposure management system at accident
(13) Enhancement of training responding to severe accident
(14) Enhancement of instrumentation to identify the status of reactors and PCVs
(15) Central control of emergency supplies and equipment and setting up rescue team