sentences:  Experts say the entire US spent-fuel policy should be overhauled in light of Fukushima I.With the cancellation of the Yucca Mountain nuclear waste repository in Nevada, more nuclear waste is being loaded into sealed metal casks filled with inert gas.Many of these casks will be stored in coastal or lakeside regions where a salt air environment exists, and the Massachusetts Institute of Technology is studying how such Dry cask storage perform in salt environments.