Premature Degradation of Nuclear Dry Cask Structures and Components due to Environmental Moisture



http://pbadupws.nrc.gov/docs/ML1232/ML12320A697.pdf
These dry cask brands belong to French State owned AREVA.
As illustrated above, “Spent fuel pools are needed to unload failed canisters and cask. However, the NRC allows pools to be destroyed after all fuel is loaded into dry storage, claiming nothing will go wrong. This December 1, 2010 Peach Bottom TN-68 cask event report is an example of why the pools are needed in case of cask or canister failure. http://pbadupws.nrc.gov/docs/ML1100/ML110060275.pdf
[NOTE: The Areva thick steel TN-68 cask worked as designed. It has a lid monitoring early warning system, so casks can be unloaded and repaired (e.g., seal replaced) before a radiation leak. If this had been a thin steel canister that leaked, there is no early warning system and the canister cannot be repaired.]” http://sanonofresafety.org/nuclear-waste/
Rather interesting that the French used to know about galvanic corrosion in the 1880s but AREVA apparently hadn’t heard of…
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