Dual pressure-retaining manway system
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United States of America Patent
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Dec 5, 2017
Issued Date -
N/A
app pub date -
Apr 1, 2015
filing date -
Apr 1, 2014
priority date (Note) -
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Abstract
According to some embodiments, a cryogenic storage tank includes a manway formed in a body of the cryogenic storage tank. An inner manway lid is coupled to an inner wall of the cryogenic storage tank and disposed over at least a portion of the manway. An outer manway lid is coupled to an outer wall of the cryogenic storage tank and disposed over at least a portion of the manway. The inner and outer manway lids are configured to retain pressure within the cryogenic storage tank.
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