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View Diary: The News About Fukushima Always Gets Worse (184 comments)

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  •  "Cold shutdown" (0+ / 0-)

    is generally understood to have a specific meaning implying that the reactor vessel can be safely opened, see:

    http://www.nrc.gov/...

    From a reactor trip at full power, cold shutdown takes maybe a couple days to reach.  I understand there is a contentious, but entirely pointless, argument about whether the units at Fukushima Daiichi can be said to be in "cold shutdown" in their current state, depending on whatever that phrase happens to connote to the various folks employing it. There is certainly nothing credible at all to suggest that re-criticality has happened, or that a new meltdown is in progress--to reference some of the more far-flung claims about the steam plume thing.

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