Overpressure (disambiguation)

Overpressure is a pressure difference, relative to a normal pressure, in various circumstances:

In engineering, the pressure difference over the wall thickness of a pressure vessel
In geology, geologic overpressure, the pressure regime that is the primary cause of "oil gushers"
In autoclave terminology, process pressure above standard given on a pressure/temperature table

Military science

Overpressure or blast overpressure, the pressure caused by a shock wave over and above normal atmospheric pressure
Overpressure ammunition, small arms ammunition loaded with a powder charge to produce a greater internal pressure than is standard
Overpressure (CBRN protection), a method to create a safe toxin free area against airborne contaminants

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