From this website:
http://www.tmia.com/accident/whatswrong.html
The admission came in a correction to its 1996 relicensing regulation, which was published in the Federal Register on July 30 1996. According to the Federal Register notice, each relicensing is expected to be responsible for the release of 14,800 person-rem of radiation during its 20-year life extension. The figure includes releases from the nuclear fuel chain that supports reactor operation, as well as from the reactors themselves. The NRC calculates that this level of radiation release spread over the population will cause 12 cancer deaths per reactor.
Do you have any link that's a little more facts and a little less hearsay?
Like a direct link to the NRC with the same 12 death claim?