The probable cause of an explosion and fire was a failure of the brazed aluminum heat exchanger (BAHX) due to thermal fatigue, says the U.S. Chemical Safety Board. The CSB has released its final report of the June 27, 2016, investigation of the explosion and fire at the Enterprise Products Pascagoula Gas Plant in Pascagoula, Miss.
The incident occurred when a major loss of containment in a heat exchanger resulted in the release of methane, ethane, propane and several other hydrocarbons. The hydrocarbons ignited, initiating a series of fires and explosions. Ultimately, the incident led to the site being shut down for almost six months.