What is the longterm real cost of nuclear energy programs?

"The decrepit nuclear reactor Vermont Yankee has sprung a radioactive leak similar to those at other poorly run reactors in Illinois (Braidwood, Byron and Dresden), Arizona (Palo Verde), and New York (Indian Point). Greenpeace noted 3 years ago that radioactive tritium leaks even threaten Champagne from France. Tritium and its decay product helium 3 are incredibly valuable and there is currently a shortage of helium 3. What, besides shutting down leaky old nuclear plants, could be done to better control release of tritium into the environment?" Read more of this story at Slashdot.