• Title/Summary/Keyword: Fire Fighting Characteristic

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A Study on the Fire Fighting General Index for Fire Fighting of Crowded Wooden Building Cultural Asset (군집 목조 건축문화재의 화재대응을 위한 소방방재 종합지수 연구)

  • Kwon, Heung-Soon;Lee, Jeong-Soo
    • Journal of architectural history
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    • v.21 no.2
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    • pp.37-52
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    • 2012
  • This research has set up the fire fighting general index for Fire fighting of Crowded Wooden Building Cultural Asset which is composed of traditional wooden building instinct or complex. The results of this study are as follows. First, Fire fighting general index for crowded wooden building cultural asset, it is necessary to set fire fighting priority by considering fire risk and cultural asset characteristic and establish the system to cope with fire disaster in the most effective way by arranging facilities with restricted resource. Second, Fire risk is the index to draw fire and spread risk of cultural asset by applying index calculation processes such as fire load, burning velocity and ignition material spread characteristic to various aspects such as individual building and complex and combining their results. Cultural asset importance index consists of individual building evaluation, publicity security degree, area importance evaluation and historical landscape degree evaluation. Third, for each index combination process, weight of each index is drawn on the basis of AHP analysis result that is performed to the specialists of related fields. The formula to apply and combine it is prepared to apply the model to include meaning of each index and comparative importance degree.

A Study on Improvement of Domestic Airport Service for Rescue and Fire Fighting (국내 공항 구조 및 소방 업무 개선방안 연구)

  • Han, Jae-Hyun;Chung, Ki-Yeon
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.16 no.4
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    • pp.69-74
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    • 2008
  • Aircraft fires due to accident at an airport may be under a special situation. An outstanding characteristic of aircraft fires is their tendency to reach lethal intensity within a very short time. In domestic aviation act, there are regulations related to services coping with the aircraft accidents within an airport. To cope aircraft fires, it is necessary to define clearly the regulations and standards about the services and related activities of rescue and fire fighting, and to keep the regulations and standards. The study has been performed on the basis of International Civil Aviation Organization (ICAO) Airport Services Manual of rescue and fire fighting. The objective of study is to suggest improvement methods for standards applicable to actual service practices of rescue and fire fighting by analyzing through the comparison of domestic and international regulations and standards.

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The study of a fire fighting characteristic by a Single Evaporating Droplet in the case of a fire of military enclosure space (군사용 밀폐공간내의 화재시 단일 증발액적에 의한 방재특성 연구)

  • 이진호;방창훈;김정수
    • Journal of the Korea Institute of Military Science and Technology
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    • v.3 no.1
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    • pp.207-217
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    • 2000
  • A fire fighting characteristic by a single evaporating droplet in the case of a fire of military enclosure space was studied experimentally. Transient cooling of solid surface by water droplet evaporation has been investigated through controlled experiments using a heated brass cylinder. Quantitative predictions of droplet evaporation time and in-depth transient temperature distribution in solid have been made. The particular interest was in the removal of thermal energy from the heated cylinder by evaporative cooling. A $10{\mu}1$ single droplet is deposited on a horizontal brass surface with initial temperatures in the range of $90^{\circ}C{\sim}130^{\circ}C.$ The results can be summarized as follows; Evaporating droplet was divided into three different configuration. Evaporation time was predicted as a function of initial surface temperature ($t_c=492.62-6.89T_{s0}+0.0248T_{s0}^2).$ The contact temperature was predicted as a function of initial surface temperature( $T_{i}$=0.94 $T_{s0}$+1.4), The parameter ${\beta}_o$ was predicted as a function of initial surface temperature( ${\beta}_0$ : 0.O0312 $T_{s0}+0.932$)>)>)

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Analysis of the Wireless Communication Environment in the Narrowed Residential Space for the Fire fighting Operation (소방작전을 위한 협소거주 공간의 무선 통신 환경 분석)

  • Park, Hyun-Ju;Hong, Sang-Beom;Choi, Hyuk-Jo
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.3
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    • pp.242-248
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    • 2017
  • Recently, Population has been concentrated in cities due to rapid economic growth. As a result, urban buildings are becoming more dense, high-rise, and diversified. The shape of these urban buildings increases the risk of fire, accidents and crime. The narrow living space has the characteristic of the unchanged floor. In case of a fire, the living space of the narrow residence is large in the damage because the smoke diffusion rate is fast. The radio wave transmittance and transmission distance of wireless communication used in fire fighting operations vary depending on the type of building materials and buildings. Therefore, this paper analyzes the building materials and structural characteristics of the narrow residential space for efficient fire fighting operations. We have developed a communication environment solution for a narrow residential space for the optimal fire fighting operation through the measurement of the radio wave transmittance and the transmission distance of the wireless communication.

Study on Efficient Operation on Aerial Fire Fighting Helicopter in Forest Fire (산불진화 헬기의 효율적인 운영방안 연구)

  • Bae, Taek-Hoon;Lee, Si-Young
    • Fire Science and Engineering
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    • v.29 no.1
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    • pp.45-52
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    • 2015
  • This research analyzed synthetically the characteristic of forest helicopter, fire helicopter, civil helicopter and deployment assets are in operated in forest fire places of our country. Looking at arrangement of helicopter, Chung-buk, Jeonnam has a number of outbreak a forest fire rather than others but it is weak of initial fire attack by a gap of helicopter arrangement. Geong-gi has many helicopter while it is a relatively few outbreak of a helicopter. According to this, We read to consider that Gang-won need to rent more a helicopters and civil helicopter in each weak areas by government expense. In addition Dae-jeon, Chung-buk and Jeon-nam need arrangement of helicopter after secure rental budget. Especially, Dae-jeon need to consider opening base of fire helicopter.

Study on Space Organization Based on Significance Assessment of Interior Space Factors at 119 Safety Center (119 안전센터 실내공간요소 중요도 평가에 의한 공간구성연구)

  • Kim, Sung-Ju;Kim, Moon-Duk
    • Korean Institute of Interior Design Journal
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    • v.23 no.4
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    • pp.257-266
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    • 2014
  • This study has been performed to come up with any rational way for responding to the functions of fire-fighting spaces newly required by the changing social paradigms and to seek for the approach to designing fire-fighting spaces by taking into account the psychological and behavioral factors of fire-fighters who are exposed stress of operations. In particular, it is to satisfy any physical and functional requirements as special working-spaces and to reflect the psychological and behavioral approach to the workers who are forced to be at standby for a long time, which is the characteristic of their operation, to designing. Accordingly, for fundamental appreciation of whether or not such space programs as space organization needed for operational function are being practiced actively, the fire-fighting headquarters of Incheon City has been selected for the research. First, in the process of assessing the trend of organizing the space at safety centers for the recent 20 years, those built more than 20 years ago were left out from the space selection for the research. Second, those with less than 20 operators also were excluded. Third, among those completed in the same year, only one was selected, which was to avoid overlapping, with the consideration its regional representative nature for applying the safety centers in the jurisdiction of the headquarters equally. The study was performed through the visits to and the actual inspections by surveys at the selected 119 Safety Centers as well as the reviews of literature based on case studies. And for the assessment of significance, surveys and analysis of reliability and factors were carried out. The actual users of Safety Centers were picked as objects for the assessment of significance of space factors at 119 Safety Centers, which revealed that there are five types of dimensions for factor-analyzing standard with which users estimate any significance, which are "Area of Mobilization Preparation and Return" "Area of Standby" "Area of Working Activities" "Area of Employ Welfare" and "Area of Support".

Strength Characteristic and Phenomenon of Heated Concrete by High Temperature (고온가열 콘크리트의 강도 특성과 현상)

  • 태순호;이병곤
    • Journal of the Korean Society of Safety
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    • v.12 no.3
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    • pp.132-138
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    • 1997
  • For many years concrete has been the major building material for most construction. It is of primary importance that fire fighters or fire investigators have a full understanding of the properties of concrete so that better control of the fire scene is achieved. This, in turn, not only help to ensure a safer fire-fighting job but also a more successful fire investigation. So far as the fire scene investigation in concerned, knowledge about the thermal behaviour of concrete can help the investigators to determine the highest temperature that a particular spot of a fire scene has ever reached thereby providing data which may be of value in reconstructing the course of the fire.

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A Study on the National Command Wireless Communication Network Construction and Operation (국가지휘 무선통신망 구축 운영방안에 관한 연구)

  • Lee, Ghang Joo
    • Journal of the Society of Disaster Information
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    • v.1 no.1
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    • pp.91-119
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    • 2005
  • When the national disaster accident is occurred, it is difficult to maintain the mutual cooperation systems. In order to solve the problems, the construction of the national unified command wireless network is necessary. In this paper, the specified state of the characteristic frequency of the digital TRS wireless network constructed recently is investigated and analyzed. Through the analysis, the problems of the construction of the national unified command wireless network are grasped. To solve the problem, it is proposed that the digital TRS wireless network is connected with the satellite communication network, and connected with the existing wireless network, LMR. In the concretely it is proposed that the natural unified wireless network should be proceeded step by step. At first, for 2 years the existing networks of the Fire Fighting Agency, the Police, the Forest Service and so on must be utilized and prepared to link with TRS. The second, for 2 years it is carried forward a scheme to maintain the properties of the agencies concerned. Further, it must be prepared to connect with satellite network. At third, for 2 years all agencies concerned with the fire fighting and the disaster prevention must be unified, and the systems have to be promoted for the p1an of linkage of TRS network and the existing network. Next the agencies concerned have to be unified and the authority has to be intensified. When a disaster is occurred, the National Emergency Management Agency has to play a central role. In a local area it has to be given the Fire Fighting Agency an authority and a duty to get ready for each emergency situation.

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A Study on Fire Hazard Analysis and Smoke Flowing for the Semiconductor Manufacturing Process (반도체 제조공정의 연기유동에 관한 연구)

  • Han, Soo-Jin;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.9 no.1
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    • pp.197-211
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    • 2007
  • The power of semiconductor, Korea is continuously constructing semiconductor production line for keeping a front-runner status. however, studies and data about potential risks in semiconductor factory are still short. If fire does not initially suppressed, the fire causes a great damage. To decrease fire risk factors, in addition to fire fighting safety equipment, more important thing is how to design and construct fire protection system. The current fire protection codes about semiconductor factory come under functional law, and this law is short of consideration about particularity of factory. The existing prescriptive fire codes depending on experience compose without evident engineering verifications, thus equipments which is created by the current prescriptive fire code may bring about a variety of problems. For example, the design under the current regulation can not cope with the excessive investments, low efficiencies, and the diversifying construction designs and be applied to the quick changes of new technologies. Ergo, an optimal design for fire protection is to equip fire protection arrangements with condition and environment of production field. Manufacturing factory of semiconductors is a windowless airtight space. And for cleanliness, there exists strong flow of cooperation. Therefore, there is a need for fire safety design that meets the characteristic of a clean room. Accordingly, we are to derive smoke flow according to cooperation process within a clean room and construction plan of an optimal sensor system. In this study, in order to confirm the performance of proposed smoke-exhaust equipment and suggest efficient smoke exhaust device when there is a fire of 1MW of methane in the clean room of company H, we have implemented fire simulation using fluid dynamics computation.

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire (실규모 심부화재 소화특성에 관한 연구)

  • Kim, Nam-Kyun;Rie, Dong-Ho
    • Fire Science and Engineering
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    • v.29 no.2
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    • pp.13-19
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    • 2015
  • Real scale fire tests was carried out for extinguishing performance evaluation of the wetting agent. The experiment was conducted in accordance with a Class A fire extinguishing test methods specified in the 'Type Approval of the Manual System Fire Extinguisher and Technical Standards of Test'. In addition, the subjects of this experiment were the wood flour and rice husk. Fire-fighting water, the three kinds of wetting agents used in the country and this study was used, was undertaken to determine a clear discrimination of the water and wetting agent. In the experimental results, it was confirmed that the internal temperature is maintained long time in the case of water. The internal temperature were rapidly lowered in the experiment of wetting agents. Therefore, the discrimination of extinguishing ability was confirmed by the temperature distribution in accordance with time. Based on the results of this experiment, this study is expected to be used as a underlying material on presenting a method of optimized performance evaluation of wetting extinguishing agent.