Tag Archive: ge bwr mark 1


NCNUKE has received an update from GE Hitachi headquarters in Wilmington NC.  It contains very insightful information.  Read their press release and NCNUKE’s take on it below.

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We at ncnuke have been going over the press release issued by GE Hitachi spokesman Michael Tetuan in order to give our readers some insight.    It indicates that the reactors funtioned well through the historically intense earthquake.  The tsunami was responsible for damaging the diesel powered backup generators, resulting in the power failure.  The press release indicates specifically one very interesting class of assistance.   Continue reading

Japanese Authorities reported that the blast which occurred at the badly crippled Fukushima #3  damaged 4 out of 5 of the cooling pumps!  Blast damage has become an increasingly important part of this story.  These facilities in general are all about containment.  The buildup of explosive gas in this hostile environment has been hampering efforts to cool the reactors.

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The answer to that question is being sought by the American people.  The troubled Fukushima reactors are GE Mark 1 BWR designs.  These reactor cores stay hot for days if not weeks following an emergency.  Their massive plumbing networks are their Achilles heel during a massive earthquake.  The reactors work by creating heat and superheating the surrounding water.  That water is then turned into steam and turns a massive turbine under high pressure.  It is then cooled and returned.  All of the plumbing is meant to contain these massive pressures and heat.  The huge external stresses caused by the earthquake and tsunami have severely damaged the system.  In a later post we will discuss the newer more inherently safer technologies.  Designs like the Traveling Wave Reactor, Pebble Bed Reactor, and a handful of new mini reactor designs.  For now all we can do is pray for Japan.