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BP p.l.c. Message Board

  • cadmium_telluride cadmium_telluride Jul 13, 2010 12:03 AM Flag

    Catastrophe - The Bolts at Transition Spool Will Snap!!!

    First look at the the new 3 ram capping stack assembly they just put in:

    Noted the yellow piece near the bottom called Frange Transition Spool. It is attached to the frange on the BOP which was originally used to connect to the raiser.

    They have to use the 5 bolts of orignal size to tighten the Frange Transition Spool. Use a different size bolt will not fit.

    These six bolts are the weakest point that will snap once they do the pressure test.

    What they intend to do is to shut the ram on top closed, shutting the oil flow in. The pressure within will reach oil reservoir pressure subtracting the pressure from the column of oil. My estimate is the interior pressure will reach at least 10000 PSI to 15000 PSI, depending on your estimate.

    The transition spool is 12 feet high. Based on the picture I estimate that the inner tube diameter is one meter, which gives the cross-section area as 1217 square inches.

    Total tensile force will be
    1217 Inch^2 * 10000 PSI
    = 12.17 MILLION POUNDS

    There is NO WAY that six original bolts can hold back this kind of force. 12 MILLION pounds.

    The bolts will snap easily.

    Some say BP would be using bigger and stronger bolts. Obvious they have not thought about it. Also it is NOT possible to use bigger bolt as it will not fit in the original holes.

    The pressure test will be a disaster waiting to happen!!!!

    How do you think the 5 bolts can hold back the pressure once the oil flow is shut in?

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