• Title/Summary/Keyword: Fire Mechanism

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The Study Fire Mechanism and Real Fire Correlation of Power Condenser (전력용 콘덴서의 화재메커니즘과 실제 화재상관관계 연구)

  • Baek, Donghyun
    • Fire Science and Engineering
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    • v.31 no.6
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    • pp.112-117
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    • 2017
  • This research discusses the correlation about fire mechanism based on real fire cases. Electric power condenser failure mechanism is classified into 7 steps and fire mechanism is classified into 12 steps. In the 5th step, the procedure of operating a protection channel of a protection relay was identical in the case of the failure and fire. As the fire occurrence mechanism was applied from the 6th step, internal pressure was increased because of gas generation produced by internal combustion phenomenon and arc. This caused explosion in 10st step of fire occurrence mechanism. In 11th step, the flame such as arc gushed out with insulating oil which caused fire and leaded to second accident. This kind of step correlation could play an important part to examine fire.

A Study on the Characteristic, Types and Mechanism of the Flame Retardant (방염제의 특성 및 메카니즘에 관한 연구)

  • Choi, Don-Mook
    • Journal of Korean Institute of Fire Investigation
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    • v.7 no.1
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    • pp.83-90
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    • 2005
  • To minimize the loss of life and economic about the underground cable fire disaster and ship fire, fabricated with plastics, the government makes effort and regulations. Therefore, the theories, mechanism and environmental effect of the flame retardant was described in this study.

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A Study on Sun Yi-Kui(孫一奎)'s "Fire.heat-disease-mechanism(火熱病機)" Theory (손일규(孫一奎)의 화열병기학설(火熱病機學說)에 대한 고찰(考察))

  • Kim, Yong-Joo;Baik, You-Sang;Jeong, Chang-Hyun
    • Journal of Korean Medical classics
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    • v.20 no.2
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    • pp.289-313
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    • 2007
  • Many of newly emerging diseases such as hypertension, stroke, diabetes, obesity, and atoptic dermatities are categorized into "Fire heat-disease(火熱病)" according to oriental medicine. It is because factors such as stress, overeating, and high fat diet are major causes of heat in the human body. Sun Yi-Kui(孫一奎), a well-known oriental medical doctor during Ming Dynasty's "Jia Jing Wan Li Nian Jian"(嘉靖萬歷年間 : A.D $1522^{\sim}1619$), established new theories on "Fire heat-disease-mechanism(火熱病機)". This study aims to investigate Dr. Sun's "Fire heat-disease-mechanism(火熱病機)"theory. For this purpose, I thoroughly examined the concepts of "Dong-Qj(動氣)", "Ming-Men(命門)", king fire(君火) and minister fire(相火) as well as pathological theory on "Fire heat(火熱)". In addition, I compared Sun's theory with those of Li Dong-yuan and Zhu dan-Xi.

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The Infrastructure Case for Reproduction or Analysis of The Mechanism on The Fire of The Electrical Appliances (가전제품 화재 메커니즘 재현 및 분석을 위한 인프라 구축)

  • Jang, In-Hyeok;Lee, Chang-Hoon;Lee, Young-Joo;Lim, Hong-Woo
    • Journal of Applied Reliability
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    • v.15 no.1
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    • pp.60-66
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    • 2015
  • In this paper, The infrastructure case for reproduction or analysis of the mechanism on the fire or the electrics shock of the electrical appliances is proposed. The various electrical appliances(Washing machine, Ballast, Electric heaters, Electronic switches, Mobile phone chargers) used in the home can be tested on the high voltage and over current test through the implementation of the infrastructure. The electrical tests of fire and electric shock consists of the high voltage of maximum 5000 V and over current test of 3 steps(90 A, 60 A, 40 A) and noise test. The mechanism of the fire and the electric shock tests reproduced are analyzed through the monitoring system and the oscilloscope. The electronics manufacturers can prevent accidents through the tests of the electronics factor reproduced and the analysis of the infrastructure designed.

A Study on the Mechanism of Explosive Spalling and Spalling Prevention Methods of High-Strength Concrete in Fire Temperature (고강도 콘크리트의 폭렬발생 및 폭렬저감 메커니즘에 관한 문헌적 고찰)

  • Jung, Hee-Jin;Lee, Jae-Young;Kim, Jae-Hwan;Han, Byung-Chan;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.04a
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    • pp.313-316
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    • 2008
  • Nowadays, the use of high strength concrete has become increasingly popular. Thus, the theory of this study gives a definition of HSC mechanism through study factors of spalling occurrence of HSC and solutions of failure mechanism. During the fire goes on, building structure using HSC causes explosive spalling and finally it gets to the breaking of the structure down. As a result of this failure mechanism, it remains to be investigated to prevent from explosive spalling of HSC and needs to provide basic problems of HSC at high temperature.

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A study on the reaction mechanism on the harmful gases related to the human physiology caused by fire and panic phenomenon. (화재발생시의 유해가스의 반응 메카니즘과 패닉현상)

  • Yoon, Moung-Hoon;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.04a
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    • pp.337-340
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    • 2008
  • Smoke composed of harmful gases such as carbon monocide and carbon dioxide is reconized as the major killer in fire situation. Especailly it is said that smoke movement is related to the panic phenomenon which threatens the life seriously. The purpose of this study is to investgate and analyse the reaction mechanism of harmful gas caused by fire effects on the human psychology and panic phenomenon.

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A Study on the fire resistance for explosive spalling according to two side (폭렬에 기인한 2면 내화가열실험에 관한 연구)

  • Lee, Kyu Min;Kang, Seung Goo;Kim, Dong Jun;Lee, Jae Young;Harada, Kazunori;Kwon, Young Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.05a
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    • pp.323-325
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    • 2013
  • This study on the proposes a spalling mechanism based on the results of a fire resistance test of HSC(High Strength Concrete) considering important factors of spalling occurrence. The factors considered in this two-sided are fire resistance test to ISO 834 fire curve. In this study, explosive spalling phenomena in the specimens were investigation.

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Mechanism analysis through Water fire case (정수기 화재발생 사례를 통한 재현실험)

  • Lee, Jeong-Il
    • Proceedings of the Safety Management and Science Conference
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    • 2011.11a
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    • pp.593-618
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    • 2011
  • Development of the economy and the growing income of people interested in the leisure and health has been focused. Past the town common wells and groundwater around the water, but health is a priority these days to solve the drinking water directly from tap water, but most people work from home, through the water purifier has been resolved. Depending on seasonal changes and personal taste of coffee, if you can enjoy a snack and water purifier is a restaurant, lounge, public areas and focusing on the rapid spread of the fire, water purifier as compared to the total number of fires increased by 0.03% per year trend on, but the washrooms fire and fire-related research data and case studies with analysis of the exact cause lack of proper preventive measures are insufficient reality. In this study, focusing on electrical energy using a water cooler to understand the structure and principles of fire, the fire revealed the mechanism is vulnerable to the consideration of factors, the exact cause of the fire investigation and the Assistant, manufacturing defects, and to contribute to fire prevention review should.

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An Intelligent Fire Leaning and Detection System (지능형 화재 학습 및 탐지 시스템)

  • Cheoi, Kyungjoo
    • Journal of Korea Multimedia Society
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    • v.18 no.3
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    • pp.359-367
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    • 2015
  • In this paper, we propose intelligent fire learning and detection system using hybrid visual attention mechanism of human. Proposed fire learning system generates leaned data by learning process of fire and smoke images. The features used as learning feature are selected among many features which are extracted based on bottom-up visual attention mechanism of human, and these features are modified as learned data by calculating average and standard variation of them. Proposed fire detection system uses learned data which is generated in fire learning system and features of input image to detect fire.

A study on the reaction mechanism on the harmful gases related to the human physiology caused by fire and panic phenomenon(II) (화재발생시의 유해가스의 반응 메카니즘과 패닉현상(II))

  • Yoon, Moung-Hoon;Lee, Jae-Won;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.502-506
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    • 2008
  • Smoke composed of harmful gases such as carbon monocide and carbon dioxide is reconized as the major killer in fire situation. Especailly it is said that smoke movement is related to the panic phenomenon which threatens the life seriously. The purpose of this study is to investgate and analyse the reaction mechanism of harmful gas caused by fire effects on the human psychology and panic phenomenon.

  • PDF