• Title, Summary, Keyword: 화재안전 Fire growth

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The Real Scale Fire Test for Fire Safety in Apartment Housing (실물화재실험을 통한 공동주택의 화재안전성 연구)

  • Yoo, Yong-Ho;Kweon, Oh-Sang;Kim, Heung-Youl
    • Fire Science and Engineering
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    • v.23 no.5
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    • pp.57-65
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    • 2009
  • This study was intended to conduct a Real-scale fire test to predict the fire behavior by unit space at the apartment building where a huge casualties and injuries are likely. After setting the inflammables inside the house, the test aimed to identify the fire characteristics to each unit item was carried out. The house was divided into 4 unit space such as kitchen, living room, bedroom and a study for a real scale fire test. As a result, bedroom reached to flashover state in 5minutes after setting the fire, indicating a rapid fire growth such as 7433.3kW of maximum thermal emissivity, 578.6ppm of carbon monoxide, 1.25ppm of carbon dioxide and $1,350^{\circ}C$ of maximum indoor temperature. Particularly, the fire growth was made up to critical temperature which might cause a severe damage to the people within 3minutes, if the fire were not extinguished at inflammable space at the early stage of fire, which stressed the need of early response. The result of a real scale fire test could be compared with the outcome of expanded simulation test and used in predicting the fire spread at the space for different use.

A statistics and study of fire cause by electrics (전기로 인한 화재 원인 통계와 고찰)

  • Lee, Young-Soo;Kim, Myeong-Soo;Hawng, Byung-Pyo;Kim, Hyeong-Soo;Song, Young-Hak
    • Journal of Korean Institute of Fire Investigation
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    • v.10 no.1
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    • pp.47-57
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    • 2007
  • If it were the occurrence of fire by electricity with the rapid growth of economy, it would be serious damage for nation that effect human life and properties. To prevent electrical fires, it was basic countermeasure that make detail statistics classified by the source, place etc. with examining correct cause of fire. In this paper, we analuzed the present condition of fire occurrence of the lastest ten years and classified fires by the source, place, month in 2006. In addition our corporation staff execute in-depth and professional research on the actual state of electrics fire by visiting fire stations fire of the whole country for 8,554 electric fires in 2005. I expect this thesis to be used for preventing electric fires and providing a stepping stone on correct production of fire statistics.

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A Study on the Risk Management Information System of the Underground Space - focused on Fire Growth Risk Assessment System- (지하공간의 위험관리정보시스템에 관한 연구 -화재확산평가시스템 중심으로-)

  • 박종근;노삼규
    • Fire Science and Engineering
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    • v.16 no.4
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    • pp.49-58
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    • 2002
  • A large number of accidents at an underground place have been happening, including the gas explosion under construction of subway; the fires of underground utility and underground shopping malls, and other explosion, at home and abroad recently. These accidents make the function of a city ineffective due to the paralyses of electricity and communications net as well as the loss of property and cause people to feel unsecured with accompaniment of a heavy of toll of lives. This research will show evaluation methods of a numerical value of expected average loss space of combustion with the use of probability in order to present potential risk of combustion growth that underground space might cause, and how designer decides a system that enables us to compare and evaluate relatively the effectiveness of measures for preventing burning by calculating the expansion route and the damage size of burning in case of fire.

A Numerical Study of the Effect off Fire Growth Model on Fire Characteristics in a Carriage (화재 성장 모델이 객차내 화재 특성에 미치는 영향에 관한 수치해석적 연구)

  • 김성찬;유홍선;최영기;김동현
    • Journal of the Korean Society for Railway
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    • v.7 no.3
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    • pp.180-185
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    • 2004
  • The present study investigates the effect of fire growth model on fire development characteristics in a carriage. The parallel processing version of FDS code is used to simulate the fire driven flow in a carriage and two types of fire growth model which are flame spread model and t$^2$ model are examined for the same geometrical condition. The heat release rates(HRR) of both model are similar each other until 30 s after ignition, but the flame spread model predicts 5 times higher than those of the t$^2$ fire model during the quasi-steady fire period. Maximum heat release rate in the case of flame spread model reaches about to 12 MW at 100 s after fire ignition. Also, various database of fire properties for combustible materials and more elaborate combustion model considering the flame spreading phenomena are required for better predictions of fire development characteristics using numerical simulation.

Heat Release Characteristics of Typical Live Fire Load in Large Bookstore (대형서점 적재가연물의 초기 연소발열성상)

  • Nam, Dong-Gun
    • Fire Science and Engineering
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    • v.25 no.2
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    • pp.88-94
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    • 2011
  • Heat release characteristics of live fire load are an important parameter for performance oriented fire safety design of a building. While investigations have been carried out on the fire load and its burning behavior in office, residential and commercial buildings and so on, little effort has been paid for the rational treatment of fire load in bookstore. In this report, burning behavior of typical combustible objects in bookstore are studied by measuring heat release rates of bookshelf with book. Based on the results, it has reviewed fire safety when a fire accident occurs on the large bookstore and suggested peak heat release rate per burning surface, fire growth rate, etc of the live fire load required for fire safety design in bookstore.

Full Scale Experiment of Fire Phenomena in case of Reinforced Concrete Structured Apartment Building -Regarding the enclosure fire growth and the structural fire vulnerability findings- (철근콘크리트 구조 공동주택 실물화재 실험 연구 -화재성상 파악 및 취약부위 도출을 중심으로-)

  • 윤명오
    • Fire Science and Engineering
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    • v.10 no.3
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    • pp.41-50
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    • 1996
  • In many of the developed countries, there have been continuous offers to observe and understand the fire phenomenon for the establishment of fire safety and the development of fire protection technology. In the past, full scale fire experiments have been conducted for the development of the construction technology and the design methods in order to secure the safety of the buildings and the people as well. This study aims at the statistics concerning the structural vulnerablity parts based on the full scale fire experiment in one of the apartment buildings that represents the average households in Korea, thereby acquring the experimental technology, and the basic data needed for the prediction of enclosure fire phenomenon which is critical for the establishment of evalution methods through simulation, and has also presents secured problems concerning the balcony structure and the window types that requires imediate improvement.

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The Real Fire Test in Bedroom for the Performance Based Fire Design (성능기반 화재안전설계를 위한 침실 공간에서의 실화재 실험)

  • Kim, Hyung-Jun;Kwon, In-Kyu;Kweon, Oh-Sang;Kim, Heung-Youl;Chae, Seung-Un
    • Fire Science and Engineering
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    • v.27 no.6
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    • pp.32-37
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    • 2013
  • For The performance based fire design of the buildings, the fire characteristic such as proceeding and scale of the fire should be figured out but, there is lack of relevant information because of different conditions and difficulties of mock-up test like type of division space, ventilation condition, etc, in buildings. Therefore, in the study, a heal release rate etc, the engineering characteristic data value on the fire is proposed by mock-up fire test for division space in buildings. The mock-up fire test is carried out in a bedroom with 2.4 (L) ${\times}$ 3.6 (W) ${\times}$ 2.4 (H) m model. Initial ignition was started from trash box and the test was carried out for 30 min. As a result of the fire test, flame was broken to outside within 7 min and 50 s after starting the test and the maximum heat release rate was measured as 3,810.6 kW at 9 min and 34 s.

A Study on Influential Factors of Egress Behavior in Respect of the Fire Prevention Manager in the Large-scale Shopping Mall (대규모 판매시설의 방화관리자의 측면에서 본 피난행동 영향요인에 대한 연구)

  • 박재성;윤명오
    • Fire Science and Engineering
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    • v.18 no.3
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    • pp.108-113
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    • 2004
  • Emergency response of fire prevention manager has an effect on decisive emergency exit behavior of customer who is not accustomed to emergency response in a large-scale shopping department on fire. Especially enclosed stairways in a large scale store are usually located in back space where is impossible for customer to access. Therefore, speedy emergency exit inducement by fire prevention manager is needed for the customer's safe egress. The object of study is to analyse the factors affecting egress behavior and emergency response of fire prevention manager in respect of fire prevention management.

A Fire Test Measuring the Heat Release Rate of Railway Car Interior Materials Satisfying the Korean Safety Guideline (안전기준을 만족하는 철도차량 내장재의 화재 열방출율 측정시험)

  • Park, Won-Hee;Lee, Duck-Hee;Jung, Woo-Sung
    • Fire Science and Engineering
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    • v.23 no.4
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    • pp.40-49
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    • 2009
  • A large-scale fire test was conducted for interior materials from a vehicle installed within a fire test room (ISO 9705). The interior materials are satisfying the Korean guideline for the safety of rail vehicles, where the guideline has taken effect since December 2004 in Korea. The output of ignition source (gas burner) was increased in several controlled steps. The objectives of this test are to assess the fire performance in terms of ignition and flame spread on interior lining materials and to provide data on an enclosure fires involving train interior materials that grow to flashover. These data will be used to develop and calibrate models for fire growth on the interiors of the railway vehicle.