Fire boat response crews battle the blazing remnants of the off shore oil rig Deepwater Horizon April 21, 2010. A Coast Guard MH-65C dolphin rescue helicopter and crew document the fire aboard the mobile offshore drilling unit Deepwater Horizon, while searching for survivors April 21, 2010. Multiple Coast Guard helicopters, planes and cutters responded to rescue the Deepwater Horizon’s 126 person crew. Captions and Photo source: U.S. Coast Guard
Vital warning systems on the Deepwater Horizon oil rig were switched off at the time of the explosion in order to spare workers being woken by false alarms, a federal investigation has heard.
The revelation that alarm systems on the rig at the centre of the disaster were disabled, and that key safety mechanisms had also consciously been switched off, came in testimony by a chief technician working for Transocean, the drilling company that owned the rig…