Boiling liquid expanding vapor explosion

A BLEVE–fireball at the Philadelphia Energy Solutions refinery, as rendered by the CSB

A boiling liquid expanding vapor explosion (BLEVE, /ˈblɛv/ BLEV-ee) is an explosion caused by the rupture of a vessel containing a pressurized liquid that is or has reached a temperature sufficiently higher than its boiling point at atmospheric pressure.[1][2] Because the boiling point of a liquid rises with pressure, the contents of the pressurized vessel can remain a liquid as long as the vessel is intact. If the vessel's integrity is compromised, the loss of pressure drops the boiling point, which can cause the liquid to convert to gas expanding rapidly. BLEVEs are manifestations of explosive boiling.

If the gas is flammable, as is the case with e.g., hydrocarbons and alcohols, further damage can be caused by the ensuing fire. However, BLEVEs do not necessarily involve fire.

  1. ^ Kletz, Trevor (1990). Critical Aspects of Safety and Loss Prevention. London, England: Butterworth–Heinemann. pp. 43–45. ISBN 0-408-04429-2.
  2. ^ "What Firefighters Need to Know About BLEVEs". FireRescue1. 23 July 2020. Archived from the original on 26 July 2020. Retrieved 8 February 2024.

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