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Unformatted text preview: ere is no evidence these modifications were a factor in the ability of the Blind Shear Rams being able to close fully and seal the well.” 351 DNV tested the performance of solenoid 103Y that was removed from the yellow pod and obtained inconsistent results. DNV observed that, when both coils within the solenoid were activated (which is what should happen if the solenoid was activated by the AMF circuits), the solenoid functioned properly. But when only one of the coils was activated, the solenoid failed to function properly. DNV posited two theories for why this occurred. First, the solenoid was removed in May 2010 but was not tested until March 2011. DNV found that it was possible that seawater deposits or hydraulic fluid build‐up was the cause of the inconsistent results. Second, it was possible that the solenoid had a manufacturing defect. DNV stated that it “did not identify any other issues or evidence that manufacturing defects of one form or another contributed to the Blind Shear Rams not closing completely and sealing the wel...
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This note was uploaded on 01/18/2014 for the course BEPP 305 taught by Professor Nini during the Fall '11 term at UPenn.

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