CEP: Process Safety Beacon - Have You Heard a Pressure-Relief Valve Chatter?

April
2013

Chattering is the rapid opening and closing of a pressure-relief valve. The resulting vibration may cause misalignment, valve seat damage, and, if prolonged, mechanical failure of valve internals and associated piping.

Some causes of chattering include: excessive inlet pressure drop; excessive backpressure; an oversized relief valve; and a relief valve that must handle widely varying flowrates.


 

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