• Journal of forensic and investigative science
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• v.1 no.1
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• pp.45-53
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• 2006

The purposes of fire investigation are to identify and analyze the causes of fire and, using the results in promoting fire fighting policies, ultimately to prevent fires caused by similar causes and to protect people's life and properties from fire. However, although the patterns of fire are getting more diverse and complicated with the rapid development of industry, complicated with the rapid development of industry, fire fighting organizations are continuing traditional superficial fire investigation without operating a fire investigation department for the reason of insufficient manpower, equipment and budget, losing public confidence. Thus, the present study purposed to propose plans to improve the technicality of fire investigation and win public confidence in fire investigation. First, the technicality of fire investigation should be improved by operating a department and personnel exclusively for fire investigation. Second, fire investigation should be more scientific and precise using high tech fire investigation equipment. Lastly, responsible fire fighting administration should be realized through statistical analysis of the causes of fire and computerization. The results of this study are expected to contribute to the safety and security of our society.

• Fire Science and Engineering
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• v.25 no.6
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• pp.112-119
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• 2011

In this study, a fire cause of setting fire to one's own car to collect the insurance is analyzed. Through a close examination of causes of this car fire, it is suggested to improve current practices and institutions: (1) A collection system of fallen vehicle parts or fire debris in the fire site should be established; (2) A system of providing fire site information in detail should be established when a police station requests National Institute of Scientific Investigation (NISI) to examine causes of vehicle fires; (3) When a burned car is suspected of arson, a fire station and a police station should maintain a mutual cooperation system; (4) Procedures of examining the causes of vehicle arson in National Institute of Scientific Investigation (NISI) should be improved; and (5) Recognition of the examination of fire causes and correlation with analysis equipment should be changed.

• Fire Science and Engineering
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• v.24 no.3
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• pp.25-32
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• 2010

This research derived the perception with, and their remedies, in our country's fire cause investigation system by conducting survey on the working-level officials responsible for fire cause investigation in the fire stations and police stations. The results of the survey showed the necessity of establishing departments exclusively responsible for fire statistics management, broad area fire cause investigation task force, fire appraisal organizations besides National Institute of Scientific Investigation, standards for retaining fire investigation equipment, ways of improving technical education system, and improving the system for those who are specialized in arson (fire) cause investigation.

• Fire Science and Engineering
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• v.15 no.1
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• pp.116-126
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• 2001

Fire investigation to examine ignition and combustion enlargement etc., to assess fire damage and to investigate a fire suspect, is used as a valuable data for better fire suppression and fire prevention police. Fire investigation is divided in to fire-cause investigation, fire-damage investigation, and fire-criminal investigation. At present, fire-cause investigation is lacking In scientific technology; specially is deficient in accurate damage assessment. And considering fore criminal investigation, since the police lacking in specialty on fire take exclusive charge of fire criminal investigation upon general investigation, it is difficult to investigate fire criminal effectively. Finally deficiency in fire investigation operates as very big blind-spot in fire safety having important axis in social safely; the loss is shifted on nation's shoulder. To solve those problems, legal, institutional, operational preparation is urgent. And so, this study tried to stabilize specialty of fire-fighting to offer more active, qualitative fire administration service, and to contribute to public peace and welfare by grasping problems after diagnosing Korean fire investigation and proposing the solutions.

• Journal of the Korean Society of Safety
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• v.39 no.2
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• pp.9-21
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• 2024

Static-electricity-induced fires and explosions persistently occur every year, averaging approximately 80 and 20 cases annually according to fire statistics provided by the National Fire Agency and industrial accident statistics provided by the Ministry of Employment and Labor, respectively. Despite the relatively low probabilities of these accidents, their potential risks are high. Consequently, effective risk assessment methodologies and accident investigation strategies are essential for efficiently managing static-electricity hazards in fire- and explosion-prone areas. Accordingly, this study aimed to identify the causal variables essential for accident investigations, thereby facilitating risk assessments and the implementation of effective recurrence prevention measures to mitigate static-electricity hazards in fire-and explosion-prone regions. To this end, industrial accident statistics recorded over the past decade (2012 to 2021) by the Ministry of Employment and Labor were analyzed to identify major fire and explosion incidents and related industrial accidents wherein static electricity was identified as a potential ignition source. Subsequently, relevant investigation reports (63 cases) were thoroughly analyzed. Based on the results of this analysis, existing electrostatic fire and explosion risk assessment techniques were refined and augmented. Moreover, factors essential for investigating electrostatic fire and explosion disasters were delineated, and the primary causal variables necessary for effective risk assessments and scientific investigations were derived.

• Journal of Korean Institute of Fire Investigation
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• v.9 no.1
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• pp.27-34
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• 2006

2004년 2월~5월까지 대구시 달서구 00동 소재에서 연쇄방화가 발생 되어 수사를 하여 오던 중 우리경찰서에서 다방면으로 수사하여 차량화재 방화범 000를 검거 후 기소한 상태에서 공판이 진행되던 과정에서 변호인 측에서 일회용 라이터로는 차량을 착화 또는 발화의 가능성이 현저히 어렵다는 이유로 피고인의 무혐의를 주장하는 변론이 제기되어 00지방검찰청 000 담당검사의 요청에 의하여 혐의를 입증하고 검증할 수 있는 자료를 제출하고 검증자료가 없으면 본 건의 조건에 따르는 실험을 실시하고 감정결과를 제출하라는 지휘에 의거 우리경찰서 과학수사팀에서는 차량(프라이드)을 1대 구입하여 지방경찰청 과학수사팀, 국립과학수사구소 남부분소 이공학실 화재 연구실과 연계하여 차량화재 실험을 실시하고 실험과정 및 발화 행태와 양상을 구체적으로 증명할 수 있는 자료를 조사연구 분석하고 국립과학수사 연구소에서는 00지방검찰청에 촬영 데이터 원본영상과 촬영물, 그리고 감정서를 작성, 실험 결과를 문서화하여 제출하여 혐의를 입증한 사례 연구로 피의자에 대한 혐의 입증시 상황이나 정황 증거보다 실체적 진실증거의 중요성을 재인식 하고자 한다.

• Journal of the Korea Safety Management & Science
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• v.25 no.4
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• pp.87-94
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• 2023

This study analyzed and identified various causes of caustic alarms of 163 fire detectors that occurred from January 2019 to December 2021 at domestic semiconductor manufacturing plants equipped with about 30,000 fire detectors, and proposed a new non-fire prevention cause investigation plan by applying the NFPA 921 scientific methodology. The results of the study are as follows. First, in terms of necessary recognition and problem definition, an analog detector and an integrated monitoring system were proposed to quickly determine the location and installation space information of the fire detector. Second, in order to prevent speculative causes and errors in various analyses in terms of data analysis and hypothesis establishment, non-fire reports were classified into five by factor and defined, and the causes of occurrence by factor were classified and proposed. Finally, in terms of hypothesis verification and final hypothesis selection, a non-fire prevention improvement termination process and a final hypothesis verification sheet were proposed to prevent the cause from causing re-error.

• Fire Science and Engineering
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• v.30 no.4
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• pp.73-81
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• 2016

A self-regulating heating cable is an electrical heating element by flowing an electric current between parallel conductors filled with an extruded semi-conductive polymer. Self-regulating heating cables are used mainly for frost protection purposes because the construction is convenient and the price is low. On the other hand, structural problems with imperfections of the insulation can cause a fire despite their usefulness. This paper deduced a direct method to derive the cause by investigating the scene of a fire due to a self-regulating heating cable and analyzed the basic problem using fault tree analysis. In this paper, the actual fire scene was a cold storage warehouse, and fire investigation was conducted. After investigating the fire scene and fault tree analysis, the cause of the fire could be attributed to dielectric breakdown of the self-regulating heating cable. This paper could be utilized in the fire safety activities and similar fire investigations.

• Journal of Korean Institute of Fire Investigation
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• v.9 no.1
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• pp.61-64
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• 2006

지난 2005년 8월 18일 대전광역시 중구 문화동 가옥에서 발생한 화재를 사례로 하여 현재 발생되고 있는 보험범죄의 잔인하고 반인륜적인 모델을 제시하였다. 동 사례는 일가족 4명이 화재로 인하여 사망하였으며, 초기에는 전기누전에 의한 단순한 화재로 오인되었으나, 현장의 정밀감정, 소사체의 정밀 부검 및 면밀한 수사를 통하여 보험금을 노린 살인 방화사건으로 밝혀진 사례이다. 본 고찰에서는 화재현장의 상황, 가옥 내부의 연소형태, 전기적인 특이점, 연소매개체, 피의자의 행위, 연소지연시간의 발생 및 수사 자료를 근거로 제시하고, 종합적으로 고찰하여 일가족 4명을 살해한 후, 시너를 연소매개체로 사용한 방화에 의해 화재가 발생한 것으로 판단한 사례이다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2005.05a
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• pp.51-56
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• 2005

For a fire cause judgement this paper describes the short circuit characteristics of a electric wire through the cross section analysis under ac condition. The cower wires prepared for the experiment were 1.2mm, 1.6mm, and 2.0mm in diameter. Through the cross section analysis(CSA), it was confirmed that the dendrite structure grew at the angle of about $40^{\circ}\;or\;60^{\circ}$ when the fusing current was applied to the wires. The larger the fusing current is, the more decreased the growth angle of the dendrite structure is. It was confirmed that the dendrite structure was arranged like the columnar structure. In this paper, the characteristics analysis of short circuit was carried out in the range of transient duration and the correlation constant k was investigated by measuring the short circuit duration and the fusing current.