Investigation of a steam explosion in a petroleum product storage tank
Version of Record online: 17 JUN 2004
Copyright © 1998 American Institute of Chemical Engineers
Process Safety Progress
Volume 17, Issue 3, pages 171–175, Autumn (Fall) 1998
How to Cite
Ogle, R. A. and Schumacher, J. L. (1998), Investigation of a steam explosion in a petroleum product storage tank. Proc. Safety Prog., 17: 171–175. doi: 10.1002/prs.680170304
- Issue online: 17 JUN 2004
- Version of Record online: 17 JUN 2004
An explosion occurred in a petroleum product storage tank at a refinery. The liquid petroleum product was a heavy oil used as an asphalt extender. There were no injuries, but the cleanup was costly. The storage tank was one of several which received the product stream from a dehydration unit. The accident occurred shortly after the refinery was brought back on-line following a shutdown for schduled maintenance.
This was the first incident of this kind to occur at this facility. Analysis of the process data and eyewitness observations indicated that the dehydration tower, which was supposed to be maintained at a minimum of 100°C during the shutdown, was allowed to drift below 100°C for an unknown period of time. This deviation enabled liquid water to enter the storage tank. Three operational factors contributed to the accident. Corrective actions were recommended to prevent a recurrence of a similar incident.