On March 11, 2011, an
earthquake in eastern Japan caused the reactors in operation at the Fukushima
Daiichi nuclear power plant (NPP) to trip. The emergency generators started and
then suddenly failed following the tsunami. The cooling water injection system
no longer worked. Suddenly plunged into total darkness, the operators had to
manage the accident.
Starting from the official reports and
testimonies on the Fukushima accident, IRSN has conducted a survey "Human and
Organizational Factors Perspective on the Fukushima Nuclear Accident".
Four years after the accident,
however, as more witness accounts become available, IRSN feels useful to return
to the human and organizational response to the accident inside the NPP itself.
To what extent can the participants act and coordinate their actions when faced
with such a dramatic situation? To what degree did their actions contribute to
Rather than looking at the causes of the accident,
this study examines the unfolding of the crisis, particularly in the most
urgent early stages, and draws lessons for safety culture from the decisions
and actions of key actors.