You mean corruption and incompetence isn't? It's not like someone accidentally pressed wrong button or something. There are clear issues which can be fixed with more regulations when building nuclear plants and who can operate them.
Can't say much for other two, since it's more just human error. One's more of a technical problem that was addressed poorly and other, too unique to happen again. People don't usually murder/suicide in nuclear plants.
Can't say much for other two, since it's more just human error. One's more of a technical problem that was addressed poorly and other, too unique to happen again. People don't usually murder/suicide in nuclear plants.