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View Diary: Fukushima Status Update Summary (289 comments)

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  •  Good luck with that.......... (2+ / 0-)
    Recommended by:
    Drama Queen, kbman

    I'd get into the other issues but am trying to restrain myself from getting involved in pro-anti discussions in these diaries.

    BTW: you might find the "Lessons Learned" reports from TMI to be interesting.

    The accident began about 4:00 a.m. on March 28, 1979, when the plant experienced a failure in the secondary, non‑nuclear section of the plant. The main feedwater pumps stopped running, caused by either a mechanical or electrical failure, which prevented the steam generators from removing heat. First the turbine, then the reactor automatically shut down. Immediately, the pressure in the primary system (the nuclear portion of the plant) began to increase. In order to prevent that pressure from becoming excessive, the pilot-operated relief valve (a valve located at the top of the pressurizer) opened. The valve should have closed when the pressure decreased by a certain amount, but it did not. Signals available to the operator failed to show that the valve was still open. As a result, cooling water poured out of the stuck-open valve and caused the core of the reactor to overheat.

    ....

    Backgrounder is HERE -- with references to the Report and other sources

    It got worse from there. They got lucky, but the misapprehensions paralleled Chernobyl all up and down the line.

    We did get to fix NRC's approvals processes. Perfect enough computer automation and control, despite arguably the worst project name ever:

    Decision Unit Tracking System -- DUTS

    D'oh.

    Financial capitalism's criminals + Angry White Males + KKK wannabes + Personality Disorder delusionals + George Will =EQ= The GOPer Base

    by vets74 on Mon Mar 21, 2011 at 06:44:30 AM PDT

    [ Parent ]

    •  I've read through the sequence of events a number (1+ / 0-)
      Recommended by:
      vets74

      of times over the years.  When I was first with GPU Nuclear I was on the island for a 6 week training course.  This was just over a year after the accident and well before the cleanup.

      Unfortunately the operators were more concerned with letting the reactor "go solid" than with uncovering fuel.  To avert calamity they created catastrophe.

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

      by kbman on Mon Mar 21, 2011 at 09:42:34 AM PDT

      [ Parent ]

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