This is what is believed to have happened in the Escientia pharma unit. This is called a vapor cloud explosion. The flames appeared to have spread to the reactor and caused an explosion,” the ...

The opening of the vessel created a vapor cloud that ignited ... four "critical safety issues" that CSB said contributed to the explosion. These included liquid overflow prevention, which ...

The tank was last re-certified in 1978 and had a defective safety valve that allowed gas to escape, which was ignited by the open flame of a ceiling-mounted furnace.