• 제목/요약/키워드: fire risk

검색결과 1,142건 처리시간 0.027초

경년열화 기간에 따른 원자력발전소용 비안전등급 케이블의 연소특성 분석 (Combustion Characteristics Analysis of a Non-class 1E Cable for Nuclear Power Plants according to Aging Period)

  • 김민호;이석희;이민철;이상규;이주은
    • 한국안전학회지
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    • 제35권5호
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    • pp.22-29
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    • 2020
  • In this study, combustion and smoke release characteristics of a non-class 1E cable for nuclear power plants were investigated according to aging period. The aging was reproduced through an accelerated aging method for interval of 10 years :10, 20, 30 and 40 year, which was applied the Arrhenius equation. The cable was subjected to accelerated aging. In order to understand combustion and smoke release characteristics, the cone calorimeter test was performed according to the standard code of KS F ISO 5660-1. Heat release rate, mass loss rate, average rate of heat emission and smoke production rate were examined through cone calorimeter test. Fire performance index, fire growth index and smoke factor were derived from test results for the comparison of quantitative fire risk. When comparing the fire performance index and the fire growth index, the early fire risk tends to decrease as aging progresses, which might be attributed from the fact that the volatile substances of cables were evaporated. However, when comparing the heat release rate, average rate of heat emission and mass loss rate, which represent the mid and late periods of the fire risk, the values of accelerated aging cables were much higher than those of non-aged cable, which signifies the unstable formation of the char layer resulted in the change in the performance of flame retardants. In addition, the results from the smoke characteristics show that the accelerated aging cables were lager than the non-aged cables in terms of overall fire risk. These results can be used as baseline data when assessing fire risk of cables and establishing fire safety code for nuclear power plants.

중소형화재실험을 이용한 외단열 시스템(EIFS) 화재위험성평가에 관한 연구 (A Study on the Fire Risk Assessment of EIFS by Cone Calorimeter Test & Single Burning Item Test)

  • 민세홍;김미숙
    • 대한안전경영과학회지
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    • 제12권1호
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    • pp.1-9
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    • 2010
  • Recently, in circumstantial situation it is recommended positively to utilize of EIFS(Exterior Insulating and Finishing System) as energy policy for economizing energy. But internal EPS insulators of EIFS are exterior panel of high fire risk, because of constituting of flammable materials to be fragile in fire. In this study, fire risk is assessed by experiment Con Calorimeter test and SBI(Single Burning Item) test. As the result of experiment, Con Calorimeter tests do not reach to capability standard of internal incombustible grade, and are assessed as low grade in SBI incombustible grade. Because EIPS is exterior material in buildings with high fire risk in spite of good efficiency, it is required rapidly to take measures to meet situation through various studies(for instance, adjusting law regulation, etc.) in the future.

초고층 건축물 소방안전관리의 기본방향에 관한 연구 (A Study on the general direction of Fire-Fighting Safety management in high-rise buildings)

  • 최만철;김병석
    • 대한안전경영과학회지
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    • 제13권2호
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    • pp.67-75
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    • 2011
  • Contrast a general building high rise buildings itself has a kind of risk. In this study, the risk of a number of high rise buildings have fire fighting safety management of the particular risks associated with looking for ways to minimize focused. Issues include self fire protection. disaster management, building code and fire code of the mismatch, such as fire protection facilities aspects are explained in terms of three kinds, and for it to take steps in the direction suggested an alternative for high rise buildings. Although differences of opinion between departments will not be easy to fire fighting and building codes regarding conflicts of codes above all require immediate resolution, and high rise buildings to create a standard for effective risk management manual countermeasures will also be ensured.

화재영향 평가 제도화 추진에 관한 연구 (The Study of Promotion for Fire Assessment System)

  • 김광일;윤명오
    • 한국화재소방학회논문지
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    • 제10권1호
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    • pp.25-43
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    • 1996
  • This paper has been studied about promotion system for fire assessment. Mainly system carried out for BCJ (Building Center of Japan) and JFSC (Japan Fire Safety Center) fire risk assessment system. Much of the work of fire science and fire protection engineering is now explicitly designed to fill gaps or improve accuracy or flexibility In some comprehensive fire hazard or fire risk models.

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무접점스위치(SSR) 발열 방지 장치 개발에 대한 연구 (A Study on Developmemt of Heat-Emission Prevention Device for SSR)

  • 이만수;김준용;김진배
    • 대한안전경영과학회지
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    • 제21권4호
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    • pp.25-30
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    • 2019
  • Electric of using in daily life is always exposed to risk of electrical fire and electric shock. Only degree of risk is different, there is no risk free electrical product. Generally, the higher voltage, the risk of electric shock is high. The much electric current, the risk of electrical fire is high. But, we can't help using electric because of risk and we effort to reduce the risk of electrical fire and electric shock. This study deal with the fire prevention generated on heating equipment using SSR for current.

현장활동 소방공무원의 인간공학적 유해요인 노출이 결근에 미치는 영향 (Effects of Fire Fighters' Absence Ergonomics Risk Factor Exposer)

  • 최서연;박동현
    • 대한안전경영과학회지
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    • 제16권3호
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    • pp.101-110
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    • 2014
  • This study tried to identify the effects of ergonomic risk factors for absence from work of fire fighters in Korea. A self-administered questionnaire was prepared for this study. The questionnaire consisted of several parts such as 'general information', 'work-related factors', 'physical & chemical risk factors', 'ergonomic risk factors', and 'absence information'. A total of 7,098 fire fighters participated in this study. The data obtained from the survey was mainly analyzed by logistic regression. A total of 856 out of 7,098 fire fighters experienced absence from work. The risk factors such as gender, age, marital status, education level, total work year, work area. position, job rotation, noise, dust, organic solvent, skin contact with chemical substance, toxic waste, regional vibration, manual material handling, continuous standing posture, awkward working posture were associated with absence from work. Specifically, awkward working posture and manual material handling from ergonomic risk factors were major risk factors for absence from work.

화재 위험성을 중심으로 한 건축물 용도별 한국형인명안전기준의 적용성 검토에 관한 연구 (The Applicability Analysis of Life Safety Codes for High Fire Risk Building Applications)

  • 구인혁;김혜원;진승현;이병흔;권영진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2022년도 가을 학술논문 발표대회
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    • pp.103-104
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    • 2022
  • In Korea, the occurrence and risk of similar fires are high, so setting up fire prevention measures through fire case investigation is considered the most basic measure in securing human safety. In particular, calculation of evacuation capacity in evacuation safety design of buildings is the most important factor that directly affects evacuation safety performance. However domestic standards is not consider about occupant characteristics. also the case of domestic, it has the problem that the law is partially applied when the fire safety design of buildings. Therefore, the purpose of this study is to study the current status and related regulations of the life safety code for the application of high fire risk buildings, and to analyze the difference in evacuation time through Case Study.

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CAES 저장 공동 운영단계에서 발생 가능한 리스크 평가 및 화재 시나리오 분석 (Analysis of Fire Scenarios and Evaluation of Risks that might Occur in Operation Stage of CAES Storage Cavern)

  • 윤용균;주은혜;서샘물;최병희
    • 터널과지하공간
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    • 제25권1호
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    • pp.107-114
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    • 2015
  • 본 연구에서는 CAES 저장 공동의 운영단계에서 발생할 가능성이 있는 리스크를 분석 및 평가하고, 가장 높은 리스크 수준을 가지고 있는 것으로 판명된 리스크에 대해서 화재 시나리오를 작성하였다. 운영단계에서의 리스크를 상위 리스크와 하위 리스크로 구분하였다. 상위 리스크는 '기술적 리스크', '시설 리스크', '자연재해 리스크'로 이루어져 있으며, 하위 리스크는 11개의 리스크 요인들로 구성되어 있다. 20인의 관련 분야 전문가에게 설문 조사를 실시하였으며, 설문 내용을 분석하기 위해서 ANP 모델을 적용하였다. 리스크 우선순위를 결정하기 위해서 ANP 분석 결과와 기 결정된 리스크 평가기준을 비교하였으며, 그 결과 '관리공동 내 화재 발생'이 위험도가 가장 높은 리스크로 선정되었다. '관리공동 내 화재 발생' 리스크가 미치는 영향을 평가하기 위하여 시나리오를 작성한 후 분석하였다. 3가지 종류의 시나리오를 고려하였으며, 시나리오를 분석하기 위해서 FDS 화재 해석 프로그램을 사용하였다. 해석 결과 터널 내부에서 외부로 바람이 부는 경우를 가정한 No. 3 시나리오가 연기 확산 속도가 가장 크면서 가장 빠르게 연기가 호흡 한계선 이하까지 하강하는 것으로 나타났다. 따라서 운영요원이 접근터널에서 피난하는 경우 No. 3 시나리오가 가장 불리한 조건으로 판명되었다.

성장화재통계 기반 건축물 용도별 화재위험도에 관한 기초연구 (A Basic Study on the Fire Risk by Building Use based Growth Fire Statistics)

  • 서동구;이종호
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2020년도 봄 학술논문 발표대회
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    • pp.218-219
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    • 2020
  • The risk of a fire in a building is closely related to the usage of the building. In particular, all fires that occur in a building are not risky to safety of human life, and it is associated with the combustion area and the increase of total floor area of the building. Therefore, this study focused on safety of human life in terms of the statistics of fire with considering the aspect of growing fires and analyzed the statistical data of fire for 10 years. As for the analysis on fire, the time of occurrence by usages of buildings, frequency of occurrence and the ratio of casualties etc. were analyzed. It is expected that results of this study could be used for evaluations on a variety of parts in terms of design, construction and maintenance of buildings.

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