• Title/Summary/Keyword: fire environment

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Prediction of sprinkler activation time in compartment fire (구획화재에서의 스프링클러 작동시간 예측 연구)

  • 김명배;한용식
    • Fire Science and Engineering
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    • v.10 no.4
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    • pp.13-18
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    • 1996
  • A general description of sprinkler activation time in compartment-fire-generated smoke layers is made. For calculation of the time hot layer temperature is obtained from two-layer zonal model and time constant of sprinkler is measured. Upper-layer thickness at the instant of sprinkler activation is also presented with changes of opening area. The output of the present study provide inputs for the interaction modeling of sprinkler spray and compartment fire environment, which simulates fire suppression phenomena. Futhermore, experiments are performed in mock-up with gasoline pool fire in order to evaluate the reliability of the model.

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Boryeong Fire Plant Museum Project (보령화력발전소 홍보관 계획)

  • Lee, Moo-Sang;Jung, Do-Kuen
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2007.05a
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    • pp.77-78
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    • 2007
  • This project has been designed for people to experience and understand the process, importance and benefit of coal fire plants. As the biggest and first typical Korean fire plant using coal, Boryeong fire plant has had important roll for the Korean industries. Even so, people has had wrong prejudice for the fire plant in terms of environmental protection. To do these kind of rolls, this museum has been designed with theme, "Boryeong fire plant mating symbiotic relationship between nature, human and technologies." The space was zoned with five major themes: i. circulation of energy in nature, ii. electric power and eco-fire plant, iii. future energy, iv roll for future of environment, v. Korea as the leading energy industry. The design has been developed focused on spatial experiences to make 'Design Sequence' with linear circulations haying several important destinations. The interior has been finished with minimal color and materials projected by big sized movie and various LED movie system. Concept of appordance has been used to make interactive experiences between exhibits and visitors.

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Performance Tests of Fire Control Using Water Mist in a Coach (미세 물분무를 이용한 객차내의 화재제어 성능시험)

  • Kim, D.H.;Park, W.H.;Jang, J.Y.;Lee, H.S.;Ryou, H.S.;Kang, J.G.;Park, J.Y.
    • Proceedings of the KSR Conference
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    • 2007.05a
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    • pp.1814-1818
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    • 2007
  • The Korea Railroad Research Institute developed a fire control system for coaches using water mist. The fire control technology using water mist is used in the fire control system embedded in coaches developed through research. Such environment-friendly, automatic fire-extinguishing device is also economical because the amount used is significantly less than that of the existing sprinkler system. The paper introduces the developed fire control system and fire control performance tests using such system.

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The Urban Fire Prediction Mapping Technique based on GIS Spatial Statistics (GIS 공간통계를 이용한 도심화재예측지도 제작기법 탐색)

  • Kim, Jin-Taek;Um, Jung-Sup
    • Fire Science and Engineering
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    • v.21 no.2 s.66
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    • pp.14-23
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    • 2007
  • In this thesis, we analysed urban fires and developed the predictive mapping technique by using GIS and spatial statistics. It presented the correlation between the fire data of last 5 years ($2001{\sim}2005$) and the factor of civilization environment in Daegu city. We produced a model of fire hazard predictive map by analyzing uncertainty of fire with the quadrat analysis and the poisson distribution.

An Experimental Study on the Various Factors affect the Explosive Spalling of High Performance Concrete (고성능 콘크리트의 폭열에 미치는 각종 요인에 관한 실험적 연구)

  • Na, Chul-Sung;Shin, Kwan-Soo;Lee, Eui-Bae;Kwon, Young-Jin;Kim, Gyu-Yong;Kim, Moo-Han
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2006.04a
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    • pp.172-175
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    • 2006
  • Recently, fire resistance of high performance concrete for explosive spatting was issued as high performance concrete was vulnerable to the explosive spatting in initial fire. Therefore, This study is willing to propose fundamental data for quick and accurate diagnosis of deteriorated concrete structure by fire damage with making variable concrete test specimen, exposing high temperature environment, observing the explosive spatting and examining engineering property.

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Analysis of Fire Evacuation Behavior in a Primary School Environment

  • Lee, Chang-Seop;Kim, Hong;A. Kilpatrick;W. Fitzpatrick
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 1997.11a
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    • pp.492-504
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    • 1997
  • The paper compares the statutory requirements for the design mid construction of primary schools in Korea and Scotland with respect to fire safety and examines the attitudes to, and the behavior in, evacuation scenarios of Primary school Pupils in both countries. The key behavioral issues examined are the effectiveness of fire safety training, the level of teacher dependency, the effect of spatial organization and gender differences both within and between Korea and Scotland.

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Survey of Building Structural Elements located at Underground for Improvement of Fire Resistant Performance (건축물 지하 구조부재의 내화성능 개선에 관한 연구)

  • Kwon, In-Kyu
    • Fire Science and Engineering
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    • v.22 no.4
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    • pp.76-84
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    • 2008
  • Researches on fire resistant performance of primary structural elements such as columns and beams located at above the ground have actively been doing than those located at the below the ground from many researchers. But the structural elements such as columns at underground is very important in aspects of not only structural performance but also fire environment. The columns at the basement carry all the structural loads from the above and that means very critical in fire circumstances than that located at above the grounds. To evaluate the fire resistance performance of primary structural elements located at below the ground we conducted several sorts of surveys that contained fire regulations from several countries and structural types, materials and status of passive fire protection methods.

Implementation of Automatic Extinguishing System for fire suppression of vehicle (차량 화재 진압을 위한 자동 소화 시스템 구현)

  • Ryu, Hye-Yeon;Kim, Man-Ho
    • Journal of the Korean Society of Industry Convergence
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    • v.22 no.2
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    • pp.227-233
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    • 2019
  • In recent years, vehicle fires account for the second highest rate after residential fires. It accounts for more than 10.7% of the total fire occurrence rate. Vehicle fires are very difficult to evolve at an early stage. Most of the vehicles are burned down in the event of a fire, resulting in a lot of physical and personal damage. In the EU and other countries, efforts are being made to install automatic fire extinguishing systems in preparation for vehicle fires. In addition, since the automatic fire extinguishing system applied to a vehicle must operate in a moving state of a car, a method for detecting a fire is needed. Therefore, this paper proposes a structure of an automatic fire extinguishing system that can evolve a fire when a fire occurs in a commercial vehicle among various vehicles. Especially, it confirms the feasibility of the automatic fire extinguishing system simulated in the laboratory environment and confirms its applicability.

Effects of forest fire on physical and chemical properties of soil (산불이 토양의 물리ㆍ화학적 특성에 미치는 영향)

  • 박관수
    • Journal of Korea Soil Environment Society
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    • v.4 no.1
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    • pp.119-126
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    • 1999
  • This study was carried out to estimate the effect of forest fire on physical and chemical properties of soil The forest fire was in April 1995 at Kongju of Chungnam. Soil samples were collected at 0~5cm, 5~10cm, and 10~20cm soil depths in September 1998 from the burned and unburned sites. Soil organic matter concentrations at 0~5cm and 5~10cm soil depths were significantly greater in unburned site than in burned site. Soil concentrations were greater in unburned site than in burned site at all soil depths. Cation exchange capacity was significantly higher in unburned site than in burned site at 0~5cm soil depth. There were no differences in available soil P, exchangeable soil K, Ca, and Mg, and pH of soil between burned and unburned sites. Soil water content at 0~5cm soil depth was significantly greater in unburned site than in burned site. Bulk density at 0~5cm soil depth was significantly higher in burned site than in unburned site. Forest fire had an adverse effect on physical and chemical properties of soil in this study, Burning of vegetation and forest 리oor organic matter in burned site may reduce organic matter supply to soil and increase soil erosion. Consequently, forest fire may have adverse influence on long-term site productivity.

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A Comparison Study on Fire Water Supply Duration and Capacity of Water Based Fire Suppression System of the United States, Japan, China and Korea (우리나라, 중국, 일본, 미국 수계소화설비 소화수 공급시간 및 소화수원에 대한 비교 연구)

  • Min, Se-Hong;Nam, Yu-Hyun
    • Fire Science and Engineering
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    • v.27 no.4
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    • pp.13-20
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    • 2013
  • Buildings in Korea have been getting higher recently and been being changed environmentally since the Korean fire standard was released in 1968. It should be established to make a appropriate correspondence of fire fighting against the those environmental changes. Most of all, fire water capacity which is basis of fire fighting service is a very significant factor. In this paper, the Korean fire water capacity and fire water duration were compared with China, Japan and the United states. Furthermore, fire water capacity, fire water duration, flow rate were compared by hazard classification, occupant use, number of floor and area with water based fire suppression system. This study has been surveyed to show what are difference, similarity, advantage and disadvantage on fire water capacity in the Korean standard comparing with neighboring countries like China, Japan as well as the United states. This study could be found what level the Korean fire water capacity is. So it suggests about more developed standard on fire water capacity with the result of analysis and comparison.