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Blowdown stack

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A blowdown stack is a chimney or vertical stack that is used to vent the pressure of components of a chemical, refinery or other process if there is a process problem or emergency. A blowdown stack can be used to complement a flare stack or as an alternative. The purpose is to prevent 'loss of containment' of volatile liquids and gases.

The failure of the blowdown stack to contain hydrocarbons vented from a raffinate splitter led to a catastrophic explosion at the Texas City Refinery (BP) in 2005.[1]

References

  1. ^ "BP agrees to pay record $50.6m fine for Texas explosion". BBC News. October 7, 2012. Retrieved August 15, 2010.

"Chemical Safety Board's Preliminary Findings in BP Texas City Refinery Accident: Refinery Ablaze - 15 dead". (362 kb) System Failure Case Studies. NASA. January 2008, Volume 2, Special Issue. Retrieved October 9, 2012

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