• Title/Summary/Keyword: 돌발화염

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A Study on the Perception of Fire Risk and Flash Flame Concerning the Firefighter (화재진압대원의 화재현장 위험도 및 돌발화염 인식 조사에 관한 연구)

  • Choi, Jae-hyeong
    • Journal of the Society of Disaster Information
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    • v.13 no.4
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    • pp.529-536
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    • 2017
  • In this study, the perceptions were surveyed fire risk and flash flames concerning the firefighters. The results were statistically evaluated according to age, experience and rank. More than 70% of the respondents answered that there is a possibility of unexpected flame exposure in the field of fire, but there was no recognition difference according to age, experience and rank. However, if there is an emergency situation in the field of fire, the survey on the ability to cope with crises showed that there is a difference in perception depending on the age, career, and rank of respondents. From these results, it is expected that strengthening simulation training of unexpected situation will be more urgently required in the future, and measures should be taken to minimize human accidents through improvement of standard operation procedures or supplement of fire suppression education according to unexpected situation.

Numerical Study on Skin Burn Injury due to Flash Flame Exposure (돌발화염으로 인한 화상예측에 관한 수치해석적 연구)

  • Lee, Jun-Kyoung;Bang, Chang-Hoon
    • Fire Science and Engineering
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    • v.26 no.5
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    • pp.13-20
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    • 2012
  • Many fire-fighters suffer from the burn injuries, and the severe burns are the most catastrophic injury a person can survive, resulting in pain, emotional stress, and tremendous economic costs. It is important to understand the physiology of burns for prevention from skin burns and a successful treatment of a burn patient. But a few researches have been presented because the complex physical phenomena of our inside body like non-linearity characteristics of human skin make them difficult. Thus in this study, thermal analyses of biological tissues exposed to a flash fire causing severe tissue damage were studied by using a finite difference method based on the Pennes bio-heat equation. The several previous models for skin thermo-physical properties were summarized, and the calculated values with those models of tissue injury were compared with the results obtained by the previous experiment for low heat flux conditions. The skin models with good agreement could be found. Also, the skin burn injury prediction results with the best model for high heat flux conditions by flash flame were suggested.

A Numerical Study on Prediction of Skin Burn Injury due to Flash Flame Exposure (돌발화염으로 인한 화상의 예측을 위한 수치해석 접근법에 대한 기초 연구)

  • Lee, Jun-Kyoung;Bang, Chang-Hoon
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2011.11a
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    • pp.167-170
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    • 2011
  • 화재현장에서 소방공무원은 화염, 증기, 또는 고온물 등에 의하여 화상사고를 당하고, 이로 인하여 극심한 고통 받고 있다. 따라서 화상 예측에 대한 연구를 통해 화상을 방지할 수 있는 방법을 개발하여야 한다. 본 연구에서는 화재시 고온 열유속 조건하에서의 화상 발생에 대한 예측을 수치해석적 방법으로 수행하였다. 생체 열전달 방정식(Bio-heat transfer)을 이용하여 지배방정식을 유도하였으며, 유한차분법(Finite Difference Method)을 활용하여 피부조직에 대한 온도분포를 얻었다. 이를 바탕으로 한 손상함수를 이용하여 2도 화상의 발생 유무를 예측하였으며, 기존의 실험 결과[Stoll and Chianta]와 비교하여 좋은 예측 결과를 얻을 수 있었다.

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A Study on the Supply and Perception of Personal Protective Equipments for Fire Fighters (화재진압대원의 개인보호장구 지급 실태 및 인식에 관한 연구)

  • Choi, Jaehyeong;Kim, Woojae;Kang, Shinwook;Kim, Junggon
    • Journal of the Society of Disaster Information
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    • v.12 no.4
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    • pp.381-388
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    • 2016
  • In this study, we surveyed the supply and perception of Personal Protective Equipments for firefighters. As a result, most of the respondents answered that they were paid in accordance with the supply standard, but 12% of the respondents said that there were insufficient equipment. Also, satisfaction with the performance of the equipment is mostly satisfied, but the safety gloves are more than 50% dissatisfied. In summing up the results of the survey, it is urgently necessary to improve the current supply standard, which is determined by the life of PPE, to the replacement period according to the using time or frequency. Also, a new standard should be prepared through the follow - up study.

Inhibitory Effect of adding Phase Change Material (PCM) to Fire Fighter Protective Clothing on Burn Injuries (Phase Change Material (PCM) 소재 적용 소방보호복의 화상발생 억제효과에 관한 연구)

  • Lee, Jun Kyoung
    • Fire Science and Engineering
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    • v.30 no.3
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    • pp.16-22
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    • 2016
  • Fire fighters rely on fire fighter protective clothing (FFPC) to provide adequate protection in the various hazardous environments. To enhance its protection performance, the FFPC material must be thick and thus it is difficult to achieve weight reduction. One of the methods of overcoming this problem, the addition of phase change material (PCM) to FFPC, is a new technology. In previous studies, the researches was mostly related to the temperature characteristics of the fibers incorporating PCM, but little information is available about its effect on burn injuries. Thus, in this study, the inhibitory effects of adding PCM to FFPC on second degree burns were investigated through numerical calculations. Thermal analyses of biological tissues and FFPC with embedded PCM exposed to several fire conditions causing severe tissue damage were studied by using a finite difference method based on the Pennes bio-heat equation. FFPC with embedded PCM was found to provide significantly greater protection than conventional fire fighting clothing, because the heat of absorption due to the phase change within the material is used to limit the heat conduction of the material.

Development of Fire Detection Algorithm for Video Incident Detection System of Double Deck Tunnel (복층터널 영상유고감지시스템의 화재 감지 알고리즘 개발)

  • Kim, Tae-Bok
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.9
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    • pp.1082-1087
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    • 2019
  • Video Incident Detection System is a detection system for the purpose of detection of an emergency in an unexpected situation such as a pedestrian in a tunnel, a falling object, a stationary vehicle, a reverse run, and a fire(smoke and flame). In recent years, the importance of the city center has been emphasized by the construction of underpasses in great depth underground space. Therefore, in order to apply Video Incident Detection System to a Double Deck Tunnel, it was developed to reflect the design characteristics of the Double Deck Tunnel. and In this paper especially, the fire detection technology, which is not it is difficult to apply to the Double Deck Tunnel environment because it is not supported on existing Video Incident Detection System or has a fail detect, we propose fire detection using color image analysis, silhouette spread, and statistical properties, It is verified through a real fire test in a double deck tunnel test bed environment.