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View Diary: Fukushima Status Update Summary (289 comments)

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  •  There are a few issues here (2+ / 0-)
    Recommended by:
    erush1345, Wee Mama

    First, there are many elements in seawater, a very complex chemistry is going on inside right now.  Given the size of the pumps and piping and such and the pressures they're made to handle, they should have some margin before corrosion becomes a critical issue.  None of these systems will be up near operating pressures ever again so some thinning of walls and such will not be as big a deal as in a reactor at power.  Valve seats and seals are more where I have concerns.  These are spots where even small amounts of corrosion could have an effect.

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

    by kbman on Sun Mar 20, 2011 at 09:04:29 PM PDT

    [ Parent ]

    •  sodium chloride (1+ / 0-)
      Recommended by:
      Drama Queen

      that's the problem.

      try to remember every flange, every valve, every regulator,
      every sensor port has been shook hard.

      That Every junction box, controller, switch, relay, thermostat,
      fuse has been shook hard and is getting salt water into
      it.

      the plant is 40 years old, so margins are decayed.

      and all those pumps are facing issues in two phase flow.

      George Bush is Living proof of the axiom "Never send a boy to do a man's job" E -2.25 S -4.10

      by nathguy on Mon Mar 21, 2011 at 08:54:10 AM PDT

      [ Parent ]

      •  You forget that these components are hardened (0+ / 0-)

        beyond normal industrial standards, more like mil spec.  They were designed, manufactured, and quality assurance tested to withstand very harsh operating environments.  Given that the inside of the drywell often has very high humidity levels, to believe that these components are not made to withstand such conditions is misguided.  During the leak rate testing there were times when the air was so saturated with moisture that it was likely "raining" inside the drywell.  Sure stuff was shook hard, but it was built to handle the shaking.  And aside from the immediate surroundings of the hydrogen explosions, it is highly doubtful that salt water is getting INTO any of the electrical components you mention.  Your assumptions are based on incomplete knowledge.

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

        by kbman on Mon Mar 21, 2011 at 11:35:13 AM PDT

        [ Parent ]

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