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윤명오,김광일,이영재 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.2
This is a paper to figure out characteristics and damages of earthquake fire occurred in Kobe, Japan by analyzing the various damage cases. The policy implications were considered in terms of safety in metropolitan areas in Korea.
김광일,윤명오 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.1
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.
파라핀족과 올레핀족 탄화수소 화합물의 폭발상한계의 추산
하동명,이수경 社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.2
An estimation methodology, based on statistics and numerical method, has been developed for estimating the upper explosive limits(UEL) of paraffinic and olefinic hydrocarbon compounds. With proposed method, the UEL has been calculated for 24 paraffinic and 10 olefinic hydrocarbon compounds. The estimated the UEL agree with the experimental values within a few percent. A comparisons with four other methods avaiable in the literature are also presented. It is hoped eventually that this method will permit estimation of the UEL with improved accuracy and broader application for other compounds.
토지이용의 위험성 제어계획 : 사용 밀도에 따른 기준치 설정의 접근방법
노삼규 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.2
This paper discussed the limit of existing safety controls where the use of land around hazardous industry. There is a gap between engineering evaluation of acceptable criteria for loss reduction and risk exposure to the areas of high risk outside plants from the aspects of risk perception. The paper performed how land use safety could be designed between the density of uses with the duration of risk exposure by type of land use. It concluded the needs of multi-dimensional presentation for an appropriate risk controls on existing and future land use safety.
기포탑반응기에서 가스 SENSOR재료인 PZT 분말의 합성(Ⅰ)
현성호,김정환 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.2
A synthesis process for PZT powder using NH_3 gas as a precipitator in a bubble column reactor was experimentally successful in develop a production process of piezoelectric ceramic PZT powder. Also as a reaction by coprecipitation, the crystalized PZT ceramic powder at the condition of over pH 9 could be attained. The time needed for reaction on the condition of NH_3 gas flow rate=0.5 l/min, Ar gas flow rate=2.0 l/min, Feed flow rate=2.33 ml/sec was less than five minutes, so it could synthesize PZT powder for such a few moments. And the synthesized PZT powder was 0.17㎛ in diameter on an average.
우인성 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.1
Burning rate of immobilized methyl and ethyl alcohols on ceramic balls was studied. Experiments were performed by burning methyl, ethyl alcohols immobilized on sands(particle size 0.35mm) and ceramic balls(particle size 1-5mm) to measure mass burning rate, height burning rate and combustion temperature. The longer time from ignition to extinguishment was resulted from the larger particle size of ceramic balls and the smaller size of ceramic balls exhibited the higher mass burning rate. Of alcohols tested the relative magnitude of facilitation of combustion was methyl > ethyl. Combustion temperature of alcohols, without regard to the types of alcohols, was not increased with smaller ceramic balls(up to 3mm of particle size). However, with larger ceramic balls, combustion temperatare of alcohols was increased by 40-50℃ and the highest combustion temperatare was obtained with sands(particle size 0.35mm).
정전기 방전에 의한 개소린-공기혼합기체의 최소착화에너지에 관한 연구
황명환,이덕출 (社)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.1
Electrostatic charge is generated in large scale or high speed processes dealing with materials with large resistance, or under complicated condition. Fire and explosion often occur due to electrostatic charge accumulated in flammable gases, vapor, liquids and powder. It is usually very difficult to verify the cause of accidents as well as the prevention. In this study, it is shown that the needle electrode needs the eletrode gap from 1.8mm to 3.8mm, sphere electrode and plate electrodes need the electrode gap of 1.9mm for the minimum ignition energy. The sphere electrode and the plate electrode requires 12.8mJ and 3.2mJ of minimum ignition energy respectively with the electrode gap of 1.1mm. The ignition voltage rises to very large value as the ground resistance increases.
노삼규 (社)韓國火災 ·消防學會 1995 한국화재소방학회논문지 Vol.9 No.2
Acceptable risk problem are decision problems they requires a choice among different estimations of technological risks. The alternative option includes a threat to life among it’s consequences. However, the definition used to ignore the public’s perceived risk which should be identified as acceptable risk. The study examine the role of perception of risk as acceptable risk between different situations of estimated consequence and probability of risk. The cost benefit principle for the reduction of risk applied to find the possible solutions with in masking process.