• Title/Summary/Keyword: The causes of fire

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Efficiency Estimation of Toxicity Free Eire Resistance Cable

  • Yoon, Hun-Ju;Hon, Jin-Woong
    • Transactions on Electrical and Electronic Materials
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    • v.3 no.3
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    • pp.34-38
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    • 2002
  • In this paper, efficiency estimation of toxicity fee fire resistance cable experiments was measured smoke density of toxicity free fire resistance polyolefin insulation material and electric field dependence of tree shape in low density polyethylene (LDPE). One of the most serious causes of failure in high-voltage cables, can be an electrical discharge across an internal gab or void in the insulating material. Treeing due to partial discharge is one of the main causes of breakdown in the insulating materials and reduction of the insulation life. Therefore the necessity for establishing a method to diagnose the aging of insulation materials and to predict the breakdown of insulation and research of the fire resistance character has become important. First, we have studied on electric field dependence of tree shape in LDPE about treeing phenomena occurring on the high electrical field. Second, the measurement method is the attenuation quantity of irradiation by smoke accumulating with in a closed chamber due to non-flaming heat decomposition and flaming combustion. A main cause of fire-growth and generating toxic gas when, it bums, should be dealt with great care in life. safety design. The fire gases were occurred carbon monoxide and decomposition than in polyolefin due to incomplete combustion of PVC, which has high content of carbon in chemical compound.

Study on ${\ulcorner}$Medical Records as a Guide to Clinical Works${\lrcorner}$ ${\ulcorner}Volume\;1{\lrcorner}$ ${\ulcorner}dizziness{\lrcorner}$ ("임증지남의안(臨證指南醫案)"권일(卷一) "현운(眩暈)"에 대한 고찰)

  • Shin, Soon-Shik
    • Journal of The Association for Neo Medicine
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    • v.1 no.2
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    • pp.31-37
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    • 1996
  • ${\ulcorner}Volume\;1{\lrcorner}$ of ${\ulcorner}$Medical Records as a Guide to Clinical Works${\lrcorner}$, written by Ye Tian Shi, showed some clinical cases of dizziness. In this study, his diagnosis and treatment was studied with 16 clinical cases of dizziness with pathogenic factor, pathogenesis and symptoms of dizziness. Ye Tian Shi thought that phlegm, fire, wind and insufficiency were the causes of dizziness and phlegm-fire, phlegm-fire-wind, wind-phlegm and insufficiencyfire-wind were the causes of dizziness, clinically. Dizziness is caused when the body is in condition of excess in the upper and deciency in the lower. The acompanying clinical symptoms of dizziness are endogenous wind, fire of deficiency type, phlegm wind and phelegm fire. For the treatment of dizziness, Ye Tian Shi used the combination of medicines with some modifications by the cases for phlegm, fire, wind and insufficiency. He also encouraged the mental therapy for the treatment of dizziness. He emphasized the early treatment of dizziness to prevent hemiplegia after apoplexy. It can be postulated from Volume 1 of ${\ulcorner}$Medical Records as a Guide to Clinical Works${\lrcorner}$, diagnosis and treatment of symptoms and illness of Ye Tian Shi was strictly based on actual clinical cases.

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Experimental Studies on the Burning Forms of Flammable Liquids (인화성액체의 연소 형태에 관한 실험적 연구)

  • Choi, Seung-Bok;Choi, Don-Mook
    • Proceedings of the Safety Management and Science Conference
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    • 2010.04a
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    • pp.247-251
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    • 2010
  • The victims of fire are increasing steadily. Fires have been occurred by arson, spontaneous combustion and various causes. As a result of that, the damages of fire got out of hand. Especially, the fires of flammable liquids are can be spreaded easily because of high calorific value and fire loads. These rapid fire spread cause the huge losses of both life and property and the malfunction of extinguishing systems. In these studies, we examined the spread pattern of surface fire on the water surface by the reappearance experiment.

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Case Studies of Firefighter Burns Safety Accident during Fire-fighting Activities (현장 소방활동 중 소방공무원 화상사고 사례 분석 연구)

  • Sin-woong, Choi;So Yun, Lee
    • Journal of the Korean Society of Safety
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    • v.37 no.6
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    • pp.136-147
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    • 2022
  • The purpose of this study is to analyze four cases of firefighter burns in various fire scenes and to find prevention measures to decrease firefighter injuries. Among the analysis reports prepared by the National Fire Research Institute of Korea from 2016 to 2020, four burn-related accidents are summarized and the main causes are conveyed. The four accidents include second-degree burns from using extinguishers during containment of fires; nine firefighters burned due to re-ignition in the LPG car repair shop; two firefighters injured with third-degree burns from using fire extinguishers during life-saving events in residential housing; and injuries from the radiant heat of the tank BLEVE near the factory fire. These cases are comprehensively investigated in their respective scenes and analyzed based on the fire site investigation reports from the fire department and related theoretical explanations of risk for each accident scene. In the third case study, some experimental research is conducted to evaluate the risk involved with the use of safety gloves. This is evaluated by reviewing Fire Tactics and Standard Operational Procedures (SOP) to determine improvements and recommendations for an efficient firefighting response. Results show that the main causes of burn accidents are the insufficient use of personal protective equipment (PPE), such as safety gloves, and the failure to follow firefighting tactics or SOPs. Through the accident investigation and assessment, it is concluded that to reduce the frequency of burn accidents, the performance of firefighting equipment, SOPs, protection tactics, and safety policy systems require improvement.

Research and Analysis of the Causes and Preventive Measures of Fires Caused by a Disposable Gas Lighter (1회용 가스라이터로 인한 화재 원인과 예방대책의 조사·분석)

  • Lee, Eui-Pyeong
    • Fire Science and Engineering
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    • v.31 no.2
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    • pp.74-81
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    • 2017
  • This study analyzed the regulatory actions of disposal gas lighters as well as the situations, causes, and preventive measures of fires, and accidents caused by disposal gas lighters. Since child-resistant lighters became mandatory, the percentage of fires caused by playing with fire has decreased in Korea as it did in America and Japan. Fires caused by disposal gas lighters can occur by afterburning, unintentional lighting, large flames, or explosion or bursting as well as by arson and playing with fire. This study suggests the preventive measures of fires caused by disposal gas lighters as follows: Taking a step not to be used as child's tool for playing with fire, the warning of fire cases caused by afterburning, warning of the dangers of leaving disposal gas lighters on the car dashboard or high temperature places, improving the protective synthetic resin cover of the stop part of a vehicle seat rail, and providing information on precautions for keeping in drawers or disposition methods.

A Study on the Discrimination of Fire Pattern by the Phenomenological Observation (Focused on the Fire Cases) (현상학적 관찰에 의한 연소패턴의 식별에 관한 연구(사례를 중심으로))

  • Choi, Don-Mook;Choi, Sung-Bok;Choi, Jae-Soung
    • Fire Science and Engineering
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    • v.23 no.6
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    • pp.98-110
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    • 2009
  • The burned patterns of fire are changed very diversely according to the direction of wind, conditions of combustibles, shape of buildings and so on in the fire scenes. And careful attentions are required on the determining of ignition point and fire causes. In this study, we examined that the burned pattern of fuel controlled fires and ventilation controled fires that impose a heavy burden on fire investigators, carbonized marks of floor, formed by flammable liquids, and combustion marks of falling firing materials through the fire cases. We suggest a proper fire investigation method.

Analysis of the Truck Fire Caused by Return Spring Defect of a Braking System during Expressway Driving (고속도로 주행 중 제동장치 리턴스프링 결함으로 발생한 트럭화재의 분석)

  • Kim, Younhoi;Lee, Euipyeong
    • Transactions of the Korean Society of Automotive Engineers
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    • v.22 no.2
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    • pp.148-155
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    • 2014
  • Most truck fires breaking out on the expressway are directly damaged by fire destruction of truck and freight and many of them cause indirect damage such as serious traffic holdups. This study analyzed the fire causes and their liability of the 25-ton truck fire breaking out during expressway driving. This truck fire was caused by manufacturing defect of return spring of a braking system. The fire liability rested with a maker(manufacturer) rather than a truck owner or a driver and the maker also bore fire liability based on the Product Liability Law.

HyungSang Medical Approach to Phlegm-Fire (담화(痰火)에 대한 형상의학적(刑象醫學的) 고찰)

  • Kim, Jong-Won;Jun, Soo-Hyung;Ji, Gyu-Yong;Kim, Kyung-Chul;Lee, In-Sun;Lee, Tae-Sik;Kim, Kyu-Kon;Lee, Yong-Tae
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.1
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    • pp.1-6
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    • 2009
  • Many of our contemporaries suffer from the symptoms of phlegm-fire, which is caused by stress, processed food, heavy diet, and unseasonal fruits and vegetables. With consultations from 'Euihaklpmoon', 'DongeuiBogham', and 'Ji-San's clinical lectures' this research, which is mainly focused on phlegm-fire, concluded as following. Phlegm-fire is caused by congestion of seven emotions, congestion of qi, complication of phlegm on fire, depletion of body fluids after long periods of disease, heavy diet, or congenital unbalance of yin-yang and qi-hyul. Concentration of phlegm-fire on the head causes headache, dizziness, frontal headache, tinnitus, and auditory dysfunction. The patient usually complains breaking pain. Dhamhwabang of Yijin-tang, Chunghoonhwadham-tang, and Yijin-tang variation for right headache can be used. Concentration of phlegm-fire on the thorax causes insomnia, palpitation, and insanity. Samhoohndham-tang variation, Chungsimgondhanhwan can be used. Concentration of phlegm-fire on the gastric region causes reflux of gastric acid, eructation, vomiting, abdominal discomfort, dysmenorrhea, and fluor gentalis. Yijin-tang variation for abdominal discomfort, Yanghyulsamul-tang, Hwadhamchunghwa-tang can be used. Shin type or Gi type, female with prevalence of qi and tendency of fire, female with dark facial color, female with raised eye tails and large noses, female with pointed noses, and male or female with large noses and mouths are likely to possess phlegm-fire. Abdominal discomfort of male with thick eyebrow and headache of Gi type female is usually caused by phlegm-fire.

An Experimental Study on Characteristics of the Residential Container Building Fire (주거용 컨테이너 화재 특성에 관한 실험적 고찰)

  • Lee, Jung-Yun;Jung, Ki-Chang;Kim, Hong
    • Journal of the Korean Society of Safety
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    • v.23 no.1
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    • pp.24-27
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    • 2008
  • The recent fire incident in an elementary school of Chonan city causes the media focus on the fire safety of residential container buildings. In this study, real fire tests were conducted in this kind of buildings. Fire temperature and radiant heat flux were measured, in order to investigate the hazard-reduction effects during the fire emergency of residential container buildings. According to the test results, flash over occur in 10 minutes, peak fire temperature was $935.5^{\circ}C$, peak radiant heat flux was $24.99kW/m^2$ at 8minutes after residential container building fire.