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View Diary: Eleven dead no obstacle to Transocean's annual 'safety' bonuses (78 comments)

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  •  Blowout preventers used in ALL deep water drilling (0+ / 0-)

    are “fundamentally flawed by design” —  Maddow

    March 27, 2011

    In a new report prepared for the U.S. Interior Department, though, we get good news and bad news. The good news is that the blowout preventer does what is suggested in the photos and accompanying charts. The bad news, according to the 551-page report by Det Norske Veritas, a Norwegian risk management company, is that it only does so in photographs and charts, and not in real-life crises such as the Macondo blowout. - emphasis added

    The major safety device (blow-out preventer) used, has the same problem as the Fukishima safety redundancies. They safety measures & back-up systems fail under the same extreme conditions caused by the original catastrophy.
     Safety back-up systems must work independently. or they don't pass muster.

    And this deserves a bonus?  Safety statistics (garnering the bonus) are worthless in the event of these environmetal disasters if the safety requirements don't actually work.

    •  Pipe wouldn't even center (1+ / 0-)
      Recommended by:
      Eric Nelson

      The major flaw in the blow out preventer turned out to be that the pipe would not even center in it.  They need to completely shelve that design and start out with one that will center the pipe for the shear rams.  Instead the pipe ended up pinched outside the edge of the ram.  A 6 year old could come up with a better design than that.  I can't help but wonder if the pipe bowed to one side because of thrust when the well kicked.

      As to the Mark 1 reactors, the basic cooling design makes no sense to me.  The torus should be above, not below.  In the event of power failure the core should flood with valves open.  That would provide a large sump and time to react...particularly when up to six reactors are involved.  It would give operators time to work the problem before manual venting to cool the reactor, then vent if needed.

      Beyond that, they have no way to passively dissipate the large amount of non-critical heat post shutdown (passive as in "no power/fail safe".)   Such a system could be built, but it's not cheap and the Mark 1's were all about cheap.

      Renewing the Bush tax cuts was the ultimate sell out of a presidency without any scruples.

      by Celtic Pugilist on Mon Apr 04, 2011 at 02:44:08 PM PDT

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