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View Diary: Everything You Never Wanted to Know about Nuclear Containments (214 comments)

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  •  The concerns about gas pressure are related to (11+ / 0-)

    having an operating margin.  The ability of the drywell to do its job and absorb the energy of a pipe break type accident is because it is large enough to let the steam expand and avoid over-pressurizing the containment seals and such.  Every increase in ambient drywell pressure means less margin available if some new pressure event were to occur.  This was made even more of a problem at Fukushima by the fact that power was not available to the drywell cooling system and the atmosphere in there was becoming hot.  And as we know from chemistry class, as temperature goes up and volume remains the same pressure also goes up --->    PV = nRT.

    Free: The Authoritarians - all about those who follow strong leaders.

    by kbman on Fri Mar 18, 2011 at 06:38:41 PM PDT

    [ Parent ]

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