A summary of a report (plain text version) presented by BP about its preliminary investigation into the causes of the Deepwater Horizon accident has been published by two Democrat congressman.
The summary refers to a multitude of possible warning signs in the 24 hours leading up to the accident, including mention of a “fundamental mistake” in response to negative pressure test results, which were one of the areas of focus in the US House Committee on Energy and Commerce oversight subcommittee’s hearings earlier this month.
Bart Stupak and Henry Waxman, who chair the subcommittee, say the report “identifies several new warning signs of problems”. The summary specifies issues with test results in the hour preceding the explosion, and highlights questions over the responses cementing, communications, functioning and maintenance of the blowout preventer, and more.