• 제목/요약/키워드: fire hazards

검색결과 211건 처리시간 0.022초

실사격 시험 프로세스의 안전성 강화를 위한 MBSE 기반 아키텍처 연구 (Model-Based Architecture Design of the Range Safety Process for Live Fire Test with Enhanced Safety)

  • 예성혁;이재천
    • 대한안전경영과학회지
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    • 제16권2호
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    • pp.43-52
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    • 2014
  • In weapon systems development, live fire tests have been frequently adopted to evaluate the performance of the systems under development. Therefore, it is necessary to ensure safety in the test ranges where the live fire tests can cause serious hazards. During the tests, a special care must be taken to protect the test and evaluation (T&E) personnel and also test assets from potential danger and hazards. Thus, the development and management of the range safety process is quite important in the tests of guided missiles and artillery considering the explosive power of the destruction. Note also that with a newly evolving era of weapon systems such as laser, EMP and non-lethal weapons, the test procedure for such systems is very complex. Therefore, keeping the safety level in the test ranges is getting more difficult due to the increased unpredictability for unknown hazards. The objective of this paper is to study on how to enhance the safety in the test ranges. To do so, an approach is proposed based on model-based systems engineering (MBSE). Specifically, a functional architecture is derived utilizing the MBSE method for the design of the range safety process under the condition that the derived architecture must satisfy both the complex test situation and the safety requirements. The architecture developed in the paper has also been investigated by simulation using a computer-aided systems engineering tool. The systematic application of this study in weapon live tests is expected to reduce unexpected hazards and test design time. Our approach is intended to be a trial to get closer to the recent theme in T&E community, "Testing at the speed of stakeholder's need and rapid requirement for rapid acquisition."

화학공장의 안전성 평가에 관한 고찰

  • 박창복
    • 방재기술
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    • 통권16호
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    • pp.28-40
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    • 1994
  • This objective of safety assessment is to determine the acceptability of risks of hazards, or the coping measures, if not acceptable, by identifying and quantifying the risks potentially involved in incidents, with the information of new technology and the disasterous cases.

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ZONE MODEL을 이용한 아파트에서의 화재 해석 (Analysis of a Fire in an Apartment Building Using a Zone Model)

  • 박진국;김충익;유홍선;윤명오
    • 한국화재소방학회논문지
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    • 제11권2호
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    • pp.25-33
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    • 1997
  • 화재 위험성올 조사하기위해 우리나라의 주거형태에서 가장 보편적인 공동주태을 사용하여 실물 화 재실험을 하였다. 화재 실험에서는 우리나라의 실제 생활에 사용되는 가구와 가연성물질풍을 사용하여 우리나라의 현실에 적합한 화재 위험성을 명가해 보았다. 이 실험에서 얻은 결과를 C-FAST라는 해석 모텔올 사용하여 얻은 예측치와 비교하였다. C-F AST의 제한성때문에 거실에서 발생한 화재에 대해서 만 결과를 비교해보았다. 실물 화재실험에서는 flash-over가 약 380초 경에 Zone-Model에서는 약 420 초 경에 발생하는 것으로 예측되었다. 그 외의 모든 실험 결과와 예측 결과에 의해 피난시간을 도출하 면 화재 실험과 Zone-Model 모두에서 250초 이내에 피난해야 한다는 결론을 얻었다.

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초고층 아파트의 화재안전계획에 관한 연구 (A Study on the Fire Safety Design of High-Rise Apartment Housing in Korea)

  • 최인석;박윤성
    • 한국화재소방학회논문지
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    • 제5권1호
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    • pp.15-22
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    • 1991
  • After the appearance of apartments in Korea, Apartment Housing has been generally accepted for its high capacity of population and convenience in the management. Nowadays, apartments have become higher, larger and more complex than ever before, showing abrupt changes in structure, form and mechanical systems. Likewise, the hazards of fire and the scale of fire losses have become a serious problem. Therefore. considerations of fire safety have taken a greater portion in the design of Apartment Housing. This study is focused particulary on spatial planning rather than on mechanical systems for fire safety.

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가연성 액체의 인화점과 화재특성치와의 관계 (The Relationship between Flash Point and Fire Properties of Flammable Liquids)

  • 송영호;하동명
    • 한국가스학회지
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    • 제11권2호통권35호
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    • pp.10-14
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    • 2007
  • 인화점은 가연성 액체의 화재 위험성을 평가하기 위해 사용되는 중요한 특성치 중의 하나이다. 가연성 액체의 상대적인 화재 위험성을 나타낼 수 있는 특성치로서는 열방출속도(HRR), 최대열방출속도(PHRR), 발화지연시간(TTI),질량 감소율, CO및 $CO_2$발생량 등이 있다. 본 연구에서는 가연성 액체의 가연성 액체의 인화점과 화재 특성치와의 관계에 대해서 검토하였다. 이를 위하여 질량 감소율과 TTI를 측정하여 화재 특성치를 계산하였다. 그 결과, 가연성 액체의 인화점과 TTI와 관련된 화재 특성치가 상관성이 매우 높은 것으로 나타났다. 이 결과로부터 가연성 액체 화재의 상대적인 위험성을 평가할 수 있는 파라미터로 사용할 수 있었다.

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EMC Safety Margin Verification for GEO-KOMPSAT Pyrotechnic Systems

  • Koo, Ja-Chun
    • International Journal of Aerospace System Engineering
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    • 제9권1호
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    • pp.1-15
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    • 2022
  • Pyrotechnic initiators provide a source of pyrotechnic energy used to initiate a variety of space mechanisms. Pyrotechnic systems build in electromagnetic environment that may lead to critical or catastrophic hazards. Special precautions are need to prevent a pulse large enough to trigger the initiator from appearing in the pyrotechnic firing circuits at any but the desired time. The EMC verification shall be shown by analysis or test that the pyrotechnic systems meets the requirements of inadvertent activation. The MIL-STD-1576 and two range safeties, AFSPC and CSG, require the safety margin for electromagnetic potential hazards to pyrotechnic systems to a level at least 20 dB below the maximum no-fire power of the EED. The PC23 is equivalent to NASA standard initiator and the 1EPWH100 squib is ESA standard initiator. This paper verifies the two safety margins for electromagnetic potential hazards. The first is verified by analyzing against a RF power. The second is verified by testing against a DC current. The EMC safety margin requirement against RF power has been demonstrated through the electric field coupling analysis in differential mode with 21 dB both PC23 and 1EPWH100, and in common mode with 58 dB for PC23 and 48 dB for 1EPWH100 against the maximum no-fire power of the EED. Also, the EMC safety margin requirement against DC current has been demonstrated through the electrical isolation test for the pyrotechnic firing circuits with greater than 20 dB below the maximum no-fire current of the EED.

대규모건축물적용 특수방재설비

  • 이성모
    • 한국화재소방학회논문지
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    • 제10권4호
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    • pp.37-42
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    • 1996
  • The "Intelligent Fire detecting and Extinguishing System" is an up-to-date fire protection system for modern high-rise buildings, international airports, enormous industrial facilities, dome stadiums such as specific areas in which the application of our local fire protection regulation could not be satisfied. The state-of-the art initiating devices communicated with sophisticated network control panels enable peoples to get reliable and powerful suppressions using water or gas, providing absolute protection. The Intelligent Water Cannon System, the Low Pressure $CO_2$ System and the MXL Networking Fire Alarm System introduced in this paper accomplish the dynamic protection for the special hazards.

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