A chief technician for Transocean said that false alarms became bothersome so they disabled the system — before the rig exploded killing 11 people. No alarm sounded
The alarm system may have been disabled as much as a year earlier. Other safety equipment allegedly was also shutdown, including a device to shut down the drill shack in the case of dangerous gas levels.
Such evidence will make it difficult for Transocean and BP to put the entire blame on each other.