Nuclear waste storage canisters
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United States of America Patent
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Dec 22, 2020
Grant Date -
Apr 20, 2017
app pub date -
Oct 17, 2016
filing date -
Oct 16, 2015
priority date (Note) -
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Abstract
A dry storage systems for radioactive nuclear waste materials in one embodiment includes a canister having a tubular shell defining an internal cavity for storing nuclear waste material, a lid sealably welded to one end the shell, and an end closure attached to a second end of the shell. The end closure includes a base plate having an upturned peripheral annular closure flange. In one embodiment, a circumferentially-extending butt joint is formed between the closure flange and the shell second end which is hermetically seals by a full through-wall thickness butt weld. Various embodiments may further include secondary pressure retention barriers enclosing the canister or select portions thereof most susceptible to failure under certain conditions.
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