• Title, Summary, Keyword: electrical fire

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A New Approach to Statistical Analysis of Electrical Fire and Classification of Electrical Fire Causes

  • Kim, Doo-Hyun;Lee, Jong-Ho;Kim, Sung-Chul
    • International Journal of Safety
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    • v.6 no.2
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    • pp.17-21
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    • 2007
  • This paper aims at the statistical analysis of electrical fire and classification of electrical fire causes to collect electrical fires data efficiently. Electrical fire statistics are produced to monitor the number and characteristics of fires attended by fire fighters, including the causes and effects of fire so that action can be taken to reduce the human and financial cost of fire. Electrical fires make up the majority of fires in Korea(including nearly 30% of total fires according to recent figures), The incorrect and biased knowledge for electrical fires changed the classification of certain types of fires, from non-electrical to electrical. It is convenient and required to develop the standardized form that makes, in the assessment of the cause of electrical fires, the fire fighters directly ticking the appropriate box on the fire report form or making an assessment of a text description. Therefore, it is highly recommended to develop electrical fire cause classification and electrical fire assessment on the fire statistics in order to categorize and assess electrical fires exactly. In this paper newly developed electrical fire cause classification structure, which is well-defined hierarchical structure so that there are not any relationship or overlap between cause categories, is suggested. Also fire statistics systems of foreign countries are introduced and compared.

Improvement and Analysis for an Electrical Fire Cause Classification (전기화재원인분류의 문제점 분석 및 개선안 제시)

  • Lee, Jong-Ho;Kim, Doo-Hyun;Kim, Sung-Chul
    • Fire Science and Engineering
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    • v.23 no.2
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    • pp.36-40
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    • 2009
  • This paper presents research about the development of electrical fire cause classification in order to improve the reliability of electrical fire statistics and to collect electrical fires data efficiently. The incorrect and biased knowledge for electrical fires changed the classification of certain types of fires, from non-electrical to electrical. It is convenient and required to develop the standardized form that makes, in the assessment of the cause of electrical fires, the fire investigators directly ticking the appropriate box on the fire report form or making an assessment of a text description. In this study, newly developed electrical fire cause classification structure, which is well-defined hierarchical structure so that there are not any relationship or overlap between cause categories, is suggested. Also the suggested classification structure can be used for electrical fire investigation and statistics, which minimizes the mistake that diagnose non-electrical fires into electrical ones.

Development of a Classification System for an Electrical Fire Investigation (전기화재 조사를 위한 분류체계 개발)

  • Lee, Jong-Ho;Kim, Doo-Hyun
    • Journal of the Korean Society of Safety
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    • v.20 no.3
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    • pp.53-57
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    • 2005
  • This paper presents development of a classification system for an electrical fire investigation. In order to reduce an electrical fires and establish detailed prevention plans, the collection of an electrical fire causes and base data are very important. Based on this data, a new classification system for an electrical fire investigation was developed and the direction to the classification system was suggested by fundamental analysis. All of the collected information is analyzed by bottom-up method. Criteria items which based on base data were categorized to classify items. The classification of items were found out as follows : basic condition fire scene condition, fire sign, fire cause. Particularly, the fire cause category is classified. A new developed classification system for an electrical fire investigation will be used to analyse electrical fires easily and efficiently.

Electrical Fire Cause Diagnosis System Using a Knowledge Base

  • Lee, Jong-Ho;Kim, Doo-Hyun;Kim, Sung-Chul
    • International Journal of Safety
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    • v.6 no.2
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    • pp.27-32
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    • 2007
  • For last several decades with the achievement of fast economic development, the electrical fires occupies over 30 percent of total fire incidents almost every year in Korea and not decreased in spite of much times and efforts. Electrical fire cause diagnostics are to confirm a cause for the fire by examination of fire scene. Cause diagnosis methods haven't been systematized yet, because of limits for available information, investigator's biased knowledge, etc. Therefore, in order to assist the investigators and to find out the exact causes of electrical fires, required is research for an electrical fire cause diagnosis system using DB, computer programming and some mathematical tools. The electrical fire cause diagnosis system has two functions of DB and electrical fire cause diagnosis. The cause diagnosis is conducted by a case-based reasoning on a case base and rule-based reasoning on a rule base. For the diagnosis with high reliability, a mixed reasoning approach of a case-based reasoning and fuzzy rule-based reasoning has been adopted. The electrical fire cause diagnosis system proposes the electrical fire causes inferred from the diagnosis processes, and possibility of the causes as well.

Development of Cause Classification Method for Improving Reliability of Electrical Fire Statistics (전기화재 조사 및 통계의 신뢰성 향상을 위한 원인분류방법의 개발)

  • Jeon, Jeong-Chay;Jeon, Hyun-Jae;Lee, Sang-Ick;Yoo, Jae-Geun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.3
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    • pp.466-471
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    • 2007
  • Electrical fires form over 30 percent of fires, but the study on the reliability of electrical fire statistics is not performed. Electrical roe occupancy was very high due to investigating and classifying fires, which is not directly continuous with electrical cause, as electrical fire because insufficiency of cause classification method or system, and the problems of the reliability of electrical fire statistics were presented. So, the reliability of electrical fire statistics must be guaranteed by improvement of the existing cause classification method of electrical fire. This paper analyzed the problems of electrical rue statistics by the existing cause classification method of electrical fire and presented the new method to classify causes of electrical fire.

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Quantitative Analysis on the Electrical Fire Preventive Effect of Safety Inspection for Electrical Facilities for General Use (일반용 전기설비 안전점검의 전기화재 예방효과에 대한 정량적 분석)

  • Kim, Taek-Hee;Yoo, Jae-Geun;Jeon, Jeong-Chay
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.64 no.2
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    • pp.45-49
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    • 2015
  • This paper presents a quantitative analysis method to quantitatively indicate a electrical fire preventive effect of safety inspection for electrical facilities for general use. Logic model was developed based on whether enforcement of safety inspection for electrical facilities, and then the developed analysis model was converted to hydraulic model by using mathematical logic. The electrical fire preventive effect of safety inspection for electrical facilities was quantitatively calculated by applying electrical safety inspection results and fire statistics for five years to the developed hydraulic model. The results show that electrical fire preventive effects of 5,542 cases on annual average for five years.

A Study on the Verification Scheme for Electrical Circuit Analysis of Fire Hazard Analysis in Nuclear Power Plant (원전 화재위험도분석에서 전기회로분석 검증방안에 관한 연구)

  • Yim, Hyuntae;Oh, Seungjun;Kim, Weekyong
    • Journal of the Korean Society of Safety
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    • v.30 no.3
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    • pp.114-122
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    • 2015
  • In a fire hazard analysis (FHA) for nuclear power plant, various electrical circuit analyses are performed in the parts of fire loading analysis, fire modeling analysis, separation criteria analysis, associated circuit analysis, and multiple spurious operation analysis. Thus, electrical circuit analyses are very important areas so that reliability of the analysis results should be assured. This study is to establish essential electrical elements for each analysis for verification of the reliability of the electrical circuit analyses in the fire hazard analysis for nuclear power plants. Applying the results derived by the study to domestic nuclear power plants, it is expected to determine the adequacy of the fire hazard analysis report and contribute to the reliability of the fire hazard analysis of those plants.

Analysis for the Thermal Properties of the Electrical Wire according to Overload and Disconnection (과부하 및 물리적 손상(반단선)에 의한 전선의 열적특성 해석)

  • Kim, Sung-Chul;Kim, Doo-Hyun
    • Journal of the Korean Society of Safety
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    • v.22 no.4
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    • pp.26-31
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    • 2007
  • According to the statistical analysis on the electrical fire of 2005 years, most of electrical fire is generated from short circuit(4,985 cases), overcurrent(755 cases) leakage current(391 cases), poor contact(378 cases), disconnection(36 cases) on the electrical wiring device. The researches for the fire hazard about normal electric wiring have already been progressing in the advanced country such as USA and Japan, but Comparative study of the disconnection has not been conducted. Therefore, in this paper, we have simulated the thermal analysis for electrical wire according to deteriorating time in a normal state and disconnection with electrical wire using the electrical-thermal finite element method(Flux 3D). This paper acquire basis data of electricity fire signal by disconnection and wish to help for electrical fire cause diagnosis business.

Development of a Novel Real-Time Monitoring System Algorithm for Fire Prevention (화재예방을 위한 실시간 모니터링 시스템의 알고리즘 개발)

  • Kim, Byeong-Jo;Kim, Jae-Ho
    • Journal of the Korean Society of Safety
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    • v.29 no.5
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    • pp.47-53
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    • 2014
  • Despite the automatic fire alarm system, according to the national fire data system of national emergency management agency, the fires account for 40,932 incidents, 2,184 injuries and about 430 billion won in property losses in 2013. Since the conventional automatic fire alarm system has several weaknesses related to electrical signal such as noise, surge, lighting, etc. Most fires are mainly caused by electrical faults, mechanical problem, chemical, carelessness and natural. The electrical faults such as line to ground fault, line to line fault, electrical leakage and arc are one of the major problems in fire. This paper describes the development of a novel real-time fire monitoring system algorithm including fault detection function which puts the existing optic smoke and heat detectors for fire detection with current and voltage sensors in order to utility fault monitoring using high accuracy DAQ measurement system with LabVIEW program. The fire detection and electrical fault monitoring with a proposed a new detection algorithm are implemented under several test. The fire detection and monitoring system operates according to the proposed algorithm well.

The fire patterns of vinyl and rubber cords shorted by external flame (외부화염에 의해 단락된 비닐코드 및 고무코드의 화재 패턴)

  • Kim, Dong-Woo;Shong, Kil-Mok;Kim, Dong-Ook;Kim, Young-Seok;Choi, Chung-Seog
    • Proceedings of the KIEE Conference
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    • pp.1655-1657
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    • 2004
  • The electrical fire frequently happens through carelessness of a vinyl and rubber cords such as a poor contact, a mechanical stress and so on. Electrical fire occupies the greater part(about 30%) of all fires in Korea. In this paper, we compared to the fire dispersive patterns of vinyl and rubber cords according to the external flame in the wall-model. The fire progress and dispersive patterns were measured by a high speed imaging system(HG-100K, REDLAKE, USA). From the results, short-circuit of the vinyl cords are easy to happen than the rubber cords by the external flame. The pattern of fire was progressed a flashover, scattering and disconnection. The fire progress on the vinyl cord is not observed because the ignition energy decreases. However, the fire was progressed continuously on the rubber cord.

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