sons sczko, a traffic tha job is to keep the best and safe. if he just stopped everyone, his supervisor would say that that is not very creative for you. would it be possible to create an environment in which a nuclear environment -- plant can operate, and which anyone can be built? -- a new one can be built? >> i do not think there is a chart that would be the motivation -- >> that is not part of your charge? if you're only card was public health and safety, you would shut them down. >> i think our charge is reasonable public safety. we are providing a level of assurance that is reasonable. >> so there is no responsibility you have to make sure that power plant can also be operated economically? >> our requirements fall into two categories. those which are the basic tenets of safety, based on court decisions. the commission is required to make those safety decisions, the respective of the economic decisions. certainly, when it goes to the implementation of requirements, we can consider the economic impact and see which is the most cost benefi