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Unformatted text preview: as alarms to sound the general alarm, even though they had been informed that a “well control problem” was occurring. During this period, there were approximately 20 alarms indicating the highest level of gas concentration in different areas on the rig. The Deepwater Horizon’s BOP stack, a massive, 360‐ton device installed at the top of the well, was designed to allow the rig crew to handle numerous types of well control events. However, on April 20, the BOP stack failed to seal the well to contain the flow of hydrocarbons. The explosions likely damaged the Deepwater Horizon’s multiplex cables and hydraulic lines, rendering the crew 4 unable to activate the BOP stack. The BOP stack was equipped with an “automatic mode function,” which upon activation would trigger the blind shear ram (BSR), two metal blocks with blades on the inside edges that are designed to cut through the drill pipe and seal the well during a well control event. The Panel concluded that there were two possible ways in which the BSR...
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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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