Blowdown Drum

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Definition(s)

Blowdown Drum

Knockout drum with or connected to a stack open to atmosphere.

NOTE 1 The term blowdown drum is sometimes also used for knockout drums connected to flare or other disposal systems, but it is not used in this context in this standard.
NOTE 2 The term blowdown is sometimes used in the context of emergency depressuring of a plant or part of a plant, but it is not used in this context in this standard.

Source:API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards

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