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Posts Tagged ‘Dale G. Bridenbaugh’

CNA (5 Jul) reported that the nuclear accident at Fukushima last year was a “man-made disaster” and not only due to the tsunami, a Japanese parliamentary panel said Thursday in its final report on the catastrophe.

I half agree with the term “man-made” because the half is who engineered the earthqauke and tsunami.  So the word “man-made” is now associate with flawed construction and in time everyone will ass-sociate man-made with construction and would not think about worlds like man-made earthquake, man-made insanities etc.  Anyway, back to man-made construction flaws.  Two important details ignore by the Japanese authorities for years are:

a) In 1976 3 GE Scientists quit in protest over flaws in Mark 1 Reactor design

        Thirty-five years ago, Dale G. Bridenbaugh and two of his colleagues at General Electric resigned from their jobs after becoming increasingly convinced that the nuclear reactor design they were reviewing — the Mark 1 — was so flawed it could lead to a devastating accident. Questions persisted for decades about the ability of the Mark 1 to handle the immense pressures that would result if the reactor lost cooling power, and today that design is being put to the ultimate test in Japan. Five of the six reactors at the Fukushima Daiichi plant, which has been wracked since Friday’s earthquake with explosions and radiation leaks, are Mark 1s. “The problems we identified in 1975 were that, in doing the design of the containment, they did not take into account the dynamic loads that could be experienced with a loss of coolant,” Bridenbaugh told ABC News in an interview. “The impact loads the containment would receive by this very rapid release of energy could tear the containment apart and create an uncontrolled release.”

The Danger Now!!!

23 nuclear power plants operating in the U.S. using the same General Electric Mark 1 reactors as the Fukushima Daiichi Unit 1 that suffered a hydrogen explosion on Saturday  and then again early Monday, according to a fact sheet just released by the Nuclear Information and Resource Service, a Maryland-based nuclear power watchdog group.

So maybe the one in Japan could be a trial exercise. US could be the real target.

    b)  Fukushima Predicted: Regulatory Commission was Warned for Years

The Nuclear Regulatory Commission (NRC) Advisory Committee on Reactor Safeguards (ACRS) held a special ACRS meeting Thursday May 26, 2011 on the current status of Fukushima.

Arnie Gundersen was invited to speak for 5 minutes concerning the lessons learned from the Fukushima accident as it pertains to the 23 Mark 1 Boiling Water Reactors (BWR’s) in the US and containment integrity.

Mr. Gundersen was the first engineer to brief the NRC on the implication of Main Steam Isolation Valve (MSIV) Leakage in 1974, and he has been studying containment integrity since 1972. The NRC has constantly maintained in all of its calculations and reviews that there is zero probability of a containment leaking.

For more than six years, in testimony and in correspondence with the NRC, Mr. Gundersen has disputed the NRC’s stand that containment systems simply do not and cannot leak. The events at Fukushima have proven that Gundersen was correct. The explosions at Fukushima show that Mark 1 containments will lose their integrity and release huge amounts of radiation, as Mr. Gundersen has been telling the NRC for many years.  (link)

Comments:

Here we take views of construction flaws seriously.  We gather feedback from people with diverse expertise and experience.  We are not easily fooled by consultants who have their own vested interest.  We strive to make the world a better place without genocide or using word like freedom and democracy to tear the country apart. We are humane.

Cheers

Mikey

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