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Pressure Equipment Directive Overpressure during fire

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barqueiroenmarte

barqueiroenmarte

Industrial
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Dear all!

European Directive about Pressure Equipment (PED 97/23) states in its Annex I that safety valves overpressure shall not exceed 10%. Does anybody know if it applies to fire exposure as well or other maximum overpressure (i.e 21%) can be used in that emergency case?

Regards
 
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Hi,

You normally use 10% overpressure allowance unless it is ASME pressure vessel.
 
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