Method for Determination of Maximum Allowable Pressure of Pressure Vessel Considering Detonation

폭굉을 고려한 압력용기 최대허용압력 결정방법의 제안

  • Choi, Jinbok (Department of Research Reactor Development, Korea Atomic Energy Research Institute)
  • 최진복 (한국원자력연구원 연구로개발단)
  • Received : 2018.06.16
  • Accepted : 2018.09.12
  • Published : 2018.10.31


The internal pressure is a critical parameter for designing a pressure vessel. The static pressure that a pressure vessel must withstand is usually determined according to the various codes and standards with simple formula or numerical simulations considering the geometric parameters such as diameter and thickness of a vessel. However, there is no specific codes or technical standards we can use practically for designing of pressure vessels which have to endure the detonation pressure. Detonation pressure is a kind of dynamic pressure which causes an impulsive pressure on the vessel wall in a extremely short time duration. In addition, it is known that the magnitude of reflected pressure at the vessel wall due to the explosion can be over twice the incident pressure. Therefore, if we only consider the reflected pressure, the design of the pressure vessel can be too conservative from the economical point of view. In this study, we suggest a practical method to evaluate the magnitude of maximum allowable pressure that the pressure vessel can withstand against the detonation inside a vessel. As an example to validate the proposed method, we consider the pressure vessel containing hydrogen gas.


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