Killer blast rap for oil bosses.
An inquiry held after a fire at Texas City refinery which killed 15 workers in 2005 found safety culture problems at the firm.
It's seen as a devastating blow to the company's reputation.
Former US secretary of state James Baker led the investigation into BP's five American plants.
His report said the company emphasised personal safety "but not emphasise process safety".
It added: "The panel found toleration of serious deviations from safe operating practices and apparent complacency toward serious safety risks at each refinery."
BP said they had already taken a number of actions in line with the recommendations. They will also develop plans for additional action at their US refineries.