Guest Re: Earthquake in nuclear power plant 07/02/2007 2:30 PM I think the vulnerability to earthquake always needs to be considered in design. Such plant are always vulnerable, just a question of how much damage will be caused. There are nuclear plants in California, and all are relatively close to active faults (zone 4). The designs take the seismic risk in to consideration and over build for it. On the other hand, some designs do not adequately take any risk consideration or redundancy into the design, chernobyl or any Russian reactor is a good example. In essence, with nuclear power plant, liek everything else, you get what you pay for.