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 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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