• Title/Summary/Keyword: 안전 설계

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A Study on Seismic Design Method Considering Physical Properties of Piping Material (배관 재료의 물성을 고려한 내진설계 방법에 관한 연구)

  • Bang, Dae-Suk;Lee, Jae-Ou
    • Fire Science and Engineering
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    • v.32 no.2
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    • pp.38-47
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    • 2018
  • In this study, we compare the engineering seismic design method considering the physical properties of piping materials and the specification-oriented design method according to the seismic design standards of fire fighting equipment. In the case of the seismic design method considering the physical properties of piping materials, the safety of the piping will be analyzed through the combined value of the torsional stress and the bending stress generated in the piping. However, in the case of the design-centered design method, instead of the safety of the piping material, it calculates the moving force of the pipe and interprets whether or not the shaking prevention strut can bear. Fire extinguishing equipment piping is possible through safety analysis of stress and displacement of piping material because piping safety can not be secured via unstable force generated in a certain section with one connected structure is there. Therefore, it is necessary to apply analytical method considering seismic performance of building structure and material properties of piping for seismic design of safe fire extinguishing system piping.

A Verification Method for the Integrated Model Combining SysML-Based System Failure Model and System Architecture (SysML 기반 시스템 고장 모델과 시스템 아키텍처의 통합 모델에 대한 검증 기법)

  • Jo, Jeong-Ho;Lee, Jae-Chon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.8
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    • pp.77-83
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    • 2016
  • International standards for systems safety have been established in various areas of industry. Such standards recommend that safety design activities be carried out early on in the beginning of systems development. Hazard analysis should be done in close interaction with the conceptual design of the system. This paper focuses on how to verify whether the safety goals are met while considering system design issues. The architecture of the underlying system was first modeled using SysML, a systems modeling language, and then hazard analysis was performed based on architectural information to obtain a system failure model. Thereafter, an integrated model was developed by combining the SysML failure model and the architectural model, and then safety designs were added to prevent system failure. Finally, a simulation of the developed model was performed to see if a system functions even when some components are failing.