Research Article

Study on Nuclear Accident Precursors Using AHP and BBN

Table 13

Lesson learned from Fukushima accident.

AreaLessonPrecursors

Enhanced safety system and philosophy(1) Enhance the defense in depth strategy.R1
(2) Considering the loss of life and aspect of social crisis in safety goals.
(3) Independence and expertise of regulatory agencies.
(4) Emphasis the responsibility of the operating agency.

Enhance the design of safety for the prevention of severe accidents(1) Review of the design criteria for natural disaster and improve the response capabilities.M1, R3, D2
(2) Enhance the diversity and reliability of the power supply system.D1
(3) Enhance passive safety system.R3, D2
(4) Actively used risk information in the design and operation.
(5) Enhance and reconfirm the safety features of spent fuel storage tank.D2, R1

Enhanced ability to respond to severe accidents(1) Prepare realistic ability to respond to assumed severe accident.O3, D1
(2) Improvement of procedures including extreme severe accidents response.O3, O4, R1
(3) Enhance nuclear plant condition monitoring.M2
(4) Fulfill the best manual and accident response by human creativity.M2, R1

Enhance emergency response system(1) Enhance emergency response systems.
(2) Emergency response facilities considering the worsening environment.
(3) Reliable radiation monitoring system and rapid radiation impact assessment.
(4) Medical countermeasures against accidents.
(5) Enhance communication system against accidents.
(6) Thorough management of radiation dose.

Enhance safe foundation(1) Emphasize safety culture.
(2) Enhance safety research.
(3) Efforts to promote understanding of radiation.