상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제23권3호
  • /
  • Pages.295-303
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  • 2009
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

Surge Tank가 설치된 상수도관망에서 부정류를 고려한 불능확률 산정

Calculation of Probability of System Failure for Pipe Network with Surge Tank regarding Unsteady Flow

  • 투고 : 2009.02.09
  • 심사 : 2009.06.08
  • 발행 : 2009.06.15
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초록

In the present study, a reliability analysis calculating the probability of system failure has been performed using cut set and results of numerical analysis for unsteady flow in pipe. Especially, the probability of system failure has been evaluated regarding the effect of valve closure which is a really important activity in operation of piping system. In spite of small amount of demand, it was found that fast valve closure can generate high probability of system failure. Furthermore, it was confirmed that surge tank can reduce the unsteady effects and probability of system failure in water distribution system. From the results, it was found that the unsteady flow has a significant effect on the probability of system failure Furthermore, it was able to find which pipe or cut set has high probability of system failure. So it could be used to determine which pipe or cut set has a priority of repair and replacement. Therefore, reliability analysis regarding unsteady flow has to be performed for the planning, designing, maintenance, and operation of piping system.

키워드

참고문헌

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