On 05/03/2010 02:03 PM, HeyBub wrote:

Perhaps the BOP was not "self aware" and depended upon instructions from the
surface?

If so, maybe the instructions never got to the BOP.

Conceivable, but that would be a pretty crappy design for a failsafe.
It should have a deadman switch such that if it gets no handshake from
the surface it shuts the valve.

Chris