Empirical Risk Analysis of Severe Reactor Accidents in Nuclear Power Plants after Fukushima

Table 1

NPP reactor accidents with INES level ≥5, reactor age denotes time since grid connection.

INES level	Reactor location	Reactor type	Year of  (age at) accident	Description of damage
5	Three Mile Island, USA	1 PWR	1979 (11 m)	Severe damage to the reactor core
7	Chornobyl, Ukraine	1 RBMK-100	1986 (2 yr 4 m)	Widespread health and, environmental effects, external release of a significant fraction of reactor core inventory
7	Fukushima-Daiichi, Japan	4 BWR	2011 (33–40 yr)	Like Chornobyl