There's no reason for four diesel generators when two would do. There's no reason for multiple chemical volume and control systems. So you are saying this reac

There's no reason for four diesel generators when two would do. There's no reason for multiple chemical volume and control systems. So you are saying this reactor type is still safe even when both diesels fail or when the chemical volume/control systems fail? I'm honestly curious (my knowledge about nuclear reactors is fairly minimal).