• 제목/요약/키워드: Fire ignition

검색결과 517건 처리시간 0.027초

THERMAL AND SMOKE MEASUREMENTS OF VEHICLE FIRES Establishing practical large-scale experiment for vehicle fires

  • Kim, Jeong-Hun;Kim, Hong;Lee, Bog-Young;Lee, Chang-Seop
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
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    • pp.335-342
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    • 1997
  • Experiments were conducted to evaluate the hazard risks of vehicle fires. Sensors were strategically placed in passenger cars to determine the temperature, propagation rate and direction of flame. The life safety hazard evaluations such as smoke and gas analysis were included. An important ignition position was performed in the engine compartment. The effects of different ignition positions and the opening of door glasses were also reviewed. The experimental results indicate that the maximum temperature when a vehicle burns varies commonly from 90$0^{\circ}C$ -100$0^{\circ}C$. The flame reaches in the face of a driver about 6-7minutes and the windshield glass breaks about 10 minutes after the ignition in the engine compartment of vehicle. And the smoke and gas concentrations reached the limit of human inhalation after 13-14 minutes. Especially the concentrations of carbon monoxide exceeded the TWA(50 ppm) during short time after ignition in cases of all experiments.

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불완전 접촉에 의한 발화원인 및 식별방법에 관한 연구 (The Cause of Fire from Incomplete Electric Contact and Identifying It)

  • 최승복
    • 한국화재조사학회논문지
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    • 제11권1호
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    • pp.9-22
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    • 2008
  • 실제로 발생한 화재사건 현장에 대하여 발화부를 확정하고 발화부내에서 발화원인으로 작용한 전기기기 및 제품을 분해하여 객관적인 입증을 도출하였다. 그리고 이와 유사한 사례를 예로 들어 보았다. 실제 산업현장에서 사용되고 있는 전기제품들의 취급 실태 지적하고 개선하여야 할 점과 대책을 검토함으로써 이러한 사례들과 유사한 유형의 화재의 재발을 방지할 수 있도록 기초자료를 제시하였다.

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Causes of the Fire at an Indoor Shooting Range in Busan

  • Park, Woe-Chul;Lee, Nae-Woo;Jeong, Lee-Gyu
    • International Journal of Safety
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    • 제9권1호
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    • pp.1-5
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    • 2010
  • On-site examinations and fire simulation were carried out to speculate on causes of the fire at an indoor shooting range in Busan. An experiment on the ignitability of unburned gunpowder was also conducted. Cigarette was the most likely source of ignition for the fire, while impact of a stray bullet failed to ignite the unburned gunpowder. The explosion in the shooting area was presumed to be caused by violent combustion of the polyurethane foam and unburned gunpowder accumulated on it. Fire safety measures include prohibit of use of profile polyurethane foam, complete clean-up of unburned gunpowder, and removal of steel components from the bullet trap.

AN EXPERIMENTAL STUDY ON THE FORMATION OF SMOKE LAYER IN COMPARTMENT FIRE

  • Hur, Man-Sung
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
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    • pp.477-483
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    • 1997
  • Experiments have been performed to investigate the formation of smoke layer in case of several furniture fires such as trashcan, chair, carpet, sofa, mattress, and wardrobe in a residential room. As a result of the present investigation, the uniformly distributed fire of carpet showed that the ignition and the initial growth period were relatively short while the fully developed period was considerably long. The concentrated fires such as mattress and wardrobe showed that the ignition and the initial growth period were relatively long. The descending time of the interface heights was within 1-3 minutes to reach around 1m. However, the interface height was lowered to 0.25-0.75m above the floor at the time of the maximum temperature.

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담뱃불 발화특성에 관한 실험적 연구 (A Experimental Study on Characteristics of the Ignition by Cigarette Light)

  • 윤인수;김병선;조원철;이태식
    • 한국재난관리표준학회지
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    • 제1권1호
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    • pp.81-87
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    • 2008
  • 매년 감소하고 있는 금연 인구추세에도 불구하고 담뱃불은 전체 화재원인의 10% 이상을 차지하고 있다. 본 연구의 목적은 담뱃불에 의한 발화특성을 실험을 통하여 분석하는 것이다. 이를 위해 본 연구에서는 2006년 인천에서 담뱃불로 인해 발생된 것으로 추정되는 화재사건에 대한 사례를 분석하였으며, 대표적인 착화물의 사례로서 골판지, 가솔린, 래커 시너, 방수천, PVC 연질시트 및 폴리에틸렌에 대해 발화 실험을 실시였다. 실험결과 골판지의 경우 담뱃불로 인하여 발화되었으나 가솔린, 래커 시너, 방수천, PVC 연질시트 및 폴리에틸렌의 경우 담뱃불로 인해 발화되지 못 하였다. 대부분의 화재원인 조사자들이 가솔린이나 천막재가 담뱃불로 인해 발화되었을 거라고 주장해 온 것에 반해 본 연구에서는 이러한 주장이 타당성이 없을 수 있다는 것을 실험적으로 입증하였다.

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4M 기법을 활용한 전기화재 예방대책 수립 연구 (A Study on the Establishment of Preventive Measures for Electric Fires Using the 4M Technique)

  • 오택흠;박찬석
    • 대한안전경영과학회지
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    • 제23권4호
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    • pp.23-29
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    • 2021
  • The purpose of this study is to reduce the probability of occurrence of electric fires as a preemptive preventive measure, and to strengthen the capability of preventing electric fires by strengthening the cooperative function between electric fire-related departments and establishing a cooperative system. In this study, the general aspects of electric fires were identified by reviewing the literature such as ignition mechanisms of electric fires. And the major electrical fires that occurred in the last 10 years were classified into ignition factors (short circuit, overload/overcurrent, and earth leakage/ground fault) and ignition sources (wiring/wiring appliances, electrical equipment/household appliances). And the 4M technique was used to analyze the potential causes of ignition at the fire site and to suggest preventive measures. In the case In this study, out of 48 electrical fires in the past 10 years, 16 short-circuit fires, 3 overload/overcurrent fires, 3 short-circuit and earth fault fires, 16 fires in wiring/wiring appliances, and 10 fires in electrical equipment/home appliances classified as cases. And prevention measures were presented in terms of human, machine, media, and management by using the 4M technique. For the preemptive prevention of electric fires, strengthening the compulsory electrical safety inspection and making it mandatory to report when new or expanding electric facilities, charging a fee for electric safety inspection for detached houses and granting benefits subject to inspection completion, improvement of the electric safety voluntary inspection table and safety indications; It was suggested as a policy to organize and operate electrical safety inspection personnel in a two-person team (mixed), establish a close work cooperation system with related organizations, and strengthen electrical safety education and publicity.

노말펜타데칸의 화재 및 폭발 특성치의 측정 (The Measurement of Fire and Explosion Properties of n-Pentadecane)

  • 하동명
    • 한국안전학회지
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    • 제28권4호
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    • pp.53-57
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    • 2013
  • For the safe handling of n-pentadecane, the lower flash points and the upper flash point, fire point, AITs(auto-ignition temperatures) by ignition delay time were experimented. Also lower and upper explosion limits by using measured the lower and upper flash points for n-pentadecane were calculated. The lower flash points of n-pentadecane by using closed-cup tester were measured $118^{\circ}C$ and $122^{\circ}C$. The lower flash points and fire point of n-pentadecane by using open cup tester were measured $126^{\circ}C$ and $127^{\circ}C$, respectively. This study measured relationship between the AITs and the ignition delay times by using ASTM E659 apparatus for n-pentadecane. The experimental AIT of n-pentadecane was $195^{\circ}C$. The calculated lower and upper explosion limit by using measured lower $118^{\circ}C$ and upper flash point $174^{\circ}C$ for n-pentadecane were 0.54 Vol.% and 6.40 Vol.%.

카페트와 커튼의 방염처리 및 사용여부에 따른 화재특성에 관한 연구 (A Study on Fire Characteristics of Carpet and Curtain Treated or Untreated with Flame Retardant)

  • 이해평;박영주
    • 한국화재소방학회논문지
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    • 제21권1호
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    • pp.74-81
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    • 2007
  • 본 연구는 다중이용업소에서 사용하고 있는 실내장식재들 가운데 카페트와 커튼을 대상으로 방염 처리 여부와 방염 처리한 카페트의 사용 여부에 따라 화재의 위험 요소인 열방출율, 연기밀도, 발화점 그리고 난연성을 평가하였다. 방염 처리 여부에 따른 실험 결과를 살펴보면, 방염 처리한 재료가 방염 처리를 하지 않은 재료보다 발열량이 낮게 나타났지만 연기밀도 지수는 오히려 높은 것으로 나타났다. 또한, 방염처리한 카페트의 사용 여부에 따른 실험결과로는 3년 사용한 중고카페트가 사용하지 않은 새 카페트보다 발열량과 연기밀도 지수가 높게 나타났으며, 동일 재료일지라도 사용여부에 따라 난연성과 발화온도의 차이가 있는 것으로 나타났다.