Category

Incident Investigation

103 articles
incident-investigation

Deepwater Horizon: How a Temporary Barrier Became a Permanent Blind Spot

The Deepwater Horizon disaster was not caused by one isolated mistake. It developed when a temporary well-control decision remained in place after its risk meaning had changed, while warnings failed to reach the people with authority to stop the job. This case study explains how investigation teams can identify barrier drift, distinguish technical evidence from governance failure, and turn a closed report into a stronger control system.

6 min