Texas Oil Refinery Explosion: Latest Updates

An explosion at the BP-owned oil refinery in Texas City, Texas, on March 23, 2005, resulted in 15 fatalities and 180 injuries, causing severe damage to the facility. The blast originated in the isomerization process unit, triggered by a hydrocarbon vapor cloud that ignited at approximately 1:20 p.m. Central Daylight Time.

The incident involved a vapor cloud explosion caused by the overfilling of a blowdown stack with liquid raffinate, a consequence of faulty instrumentation and inadequate procedures during the unit’s start-up. All those killed in the explosion were contract workers positioned in temporary structures near the unit, supporting turnaround activities.

BP Products North America Inc. Was convicted of violating section 112(r)(7) of the Clean Air Act and subsequently pleaded guilty, agreeing to a $50 million settlement and a three-year probation period. Litigation stemming from the disaster involved approximately 4,000 claims, with BP facing liabilities estimated at $2.5 billion, including settlements, repair costs, lost production, and fines. Property damage was initially valued at $200 million, equivalent to approximately $330 million in 2025 dollars.

The refinery, originally established in 1933 by Pan American Refining Corporation, became part of Amoco in 1954 following a merger with Standard Oil of Indiana. BP acquired the refinery in 1999 through its merger with Amoco. As of January 2005, the Texas City refinery was the second-largest in Texas, behind the Baytown Refinery, and the fourth-largest in the United States overall.

Investigations into the explosion were conducted by BP internally, as well as by the Baker Panel and the Chemical Safety Board (CSB). The CSB approved its final report on March 20, 2007, following a 5-0 vote at a public meeting held in Texas City.

A separate incident occurred at the Oneok oil refinery in Mont Belvieu, Texas, on October 6, 2025, resulting in minor injuries to three people. Oneok stated the fire was quickly extinguished and all personnel were accounted for, initiating a thorough investigation into the cause.