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Originally posted by tothetenthpower
So reading over the pages, and the time line of the events, it seems that BP is attempting to say that ALL data they received for testing the rig prior the the explosion were ok.
They passed.
Although I distinctly remember a BP spokesperson saying that the last 24 hours of data before the Rig exploded had been mysteriously lost?
~Keeper
Originally posted by kdial1
Originally posted by tothetenthpower
So reading over the pages, and the time line of the events, it seems that BP is attempting to say that ALL data they received for testing the rig prior the the explosion were ok.
They passed.
Although I distinctly remember a BP spokesperson saying that the last 24 hours of data before the Rig exploded had been mysteriously lost?
~Keeper
Yeah but what the hell do they mean by interpretation? Is this witness statements? Hmm, going to digg deeper.
Page 35 of pdf document:
EDS (Emergency Disconnect) Function
EDS was activated from Bridge after explosion at 21:56 based on witness statements
The EDS function can be activated from the surface (either the bridge or drill floor),
-Function is to seal the well and disconnect the vessel from the well.
The EDS sequence:
- Operator on rig pushes the EDS button
- Blind shear rams close cutting drill pipe and sealing the well
- Choke and kill line valves are closed and lines unlatched
- LMRP is unlatched and disconnects
- The EDS sequence is now complete and rig is free to move away from well.
In this event there is no evidence that the EDS activated, there was still significant flow from the well and the LMRP remained connected to the BOP.
Page 36
BOP AMF (Dead-man) Function
- The AMF would have been expected to seal the well after loss of the three functions (hydraulics, communications and power) from the surface at some point between the explosions and the rig sinking.
- The AMF is an emergency sequence that activates the blind shear rams to seal the well.
- Activation time for the AMF is 37 seconds.
- The AMF sequence:
The BOP senses the loss of hydraulics, communications, power from the surface ( all three need to be lost) and arms the AMF.
The AMF Activates the Blind shear rams cutting drill pipe and sealing the well.
Note that the AMF does not disconnect the LMRP.
There is no evidence to suggest that the AMF in this case activated effectively to seal the well.