• 한국화재소방학회:학술대회논문집
• /
• 한국화재소방학회 2008년도 추계학술논문발표회 논문집
• /
• pp.438-443
• /
• 2008

Fire model shall be verified and validated to reliably show the predictive capabilities for a specific use. In the process of model verification and validation, both the acceptable uses and limitation of fire model are established. In this study, the results of FDS simulation are compared with the data of PRISME experiment such as temperature, heat release rate, heat flux, product concentrations in the under-ventilated two-room condition. Furthermore, the sensitivity of FDS under ventilation condition changes are evaluated. FDS provide the reliable prediction for under-ventilated two-room fire scenario with slightly deviation.

• 한국안전학회지
• /
• 제20권3호
• /
• pp.53-57
• /
• 2005

This paper presents development of a classification system for an electrical fire investigation. In order to reduce an electrical fires and establish detailed prevention plans, the collection of an electrical fire causes and base data are very important. Based on this data, a new classification system for an electrical fire investigation was developed and the direction to the classification system was suggested by fundamental analysis. All of the collected information is analyzed by bottom-up method. Criteria items which based on base data were categorized to classify items. The classification of items were found out as follows : basic condition fire scene condition, fire sign, fire cause. Particularly, the fire cause category is classified. A new developed classification system for an electrical fire investigation will be used to analyse electrical fires easily and efficiently.

• 한국화재조사학회지
• /
• 제8권1호
• /
• pp.41-48
• /
• 2006

The purpose of this study is to identify the fire danger of the electric radiant heating system and check the way how to use it and the problems that could be possible through a actual case. We carry out an experiment to identify the possibility of the fire in the similar condition of the actual fire case. The results of this study are as follows. It is a possible condition to fire if the air blast of the electric radiant heating system is blocked by some combustible materials such as plastic bags continuously. A temperature sensor and a residual current device are necessary to disconnect the power source. It is also necessary to attach a notice in front of the electric radiant hearing system that shows users the fire danger to forbid the possible fire. Fires could be happened by internal defects of the electronic products. However, we can also find many external reasons to happen fires. Therefore, we need to check all reasons to make fires in the scene of a fire.

• 한국화재소방학회논문지
• /
• 제24권1호
• /
• pp.134-139
• /
• 2010

"2008년도 화재통계연보"에 따르면 화재 발생의 약 34%가 호텔, 식당, 주택 등과 같은 실내 화재이고 그 중에서 약 53% 이상이 주방에서 발생하고 있다. 이에 최근에 국내에서는 공동주택내 주방의 화재소화 설비로써 주로 자동식 소화기를 사용하고 있고 형식 승인은 "자동식 소화기의 형식 승인 및 검정기술기준(KOFEIS 0101-1)"을 따르고 있다. 하지만 자동식 소화기 성능 평가 기준내의 한가지 환경조건만으로는 실제 주방에서 자동 소화기의 성능을 검증하는 것에 한계가 있다. 그러므로 다양한 주방 구조에 따라 화재 감지 특성에 대한 연구가 필요하다. 본 연구에서는 주방에서 레인지 주변의 형상에 따라 감지시간에 대한 영향을 수치해석 하였고 그 결과 화재 감지 시간의 차이가 약 100초 가량 차이가 났다. 또한 후드의 작동 여부에 따라서도 감지 특성이 다르게 나타났다. 이러한 결과를 바탕으로 주방 내에서 조리용 기름의 화재 제어를 위한 성능 평가 기준을 검증하고 개선하는데 활용될 수 있다.

• 한국화재소방학회논문지
• /
• 제34권2호
• /
• pp.64-71
• /
• 2020

본 논문에서는 단상 유도전동기의 구속운전조건에서 화재 위험성에 관하여 기술하였다. 일반적으로 전동기의 고장 발생은 회전자의 회전 불량 등으로 인한 구속운전조건의 형태로 나타난다. 전동기의 기동 시에는 정격전류의 약 2~15배에 달하는 큰 돌입전류가 흐르게 되는데 단상 유도전동기에서 구속운전조건이 발생하게 되면 돌입전류에 준하는 전류가 지속적으로 고정자권선을 통해 흐르게 된다. 구속운전조건에서 고정자권선을 통해 흐르는 과전류에 의해 고정자 권선 내부의 온도가 상승하고, 최종적으로 절연물을 매개로 화재로 이어지는 특징이 나타난다. 본 논문에서는 임의로 구속운전조건을 만들고, 이때 고정자권선에 흐르는 과전류의 크기 및 온도 상승을 측정하였다. 실험결과로부터 구속운전조건에서는 정격전류에 비해 약 7배의 과전류가 발생하였으며, 고정자권선 내부의 온도가 약 300 ℃ 정도에서 화재로 진전되는 것을 확인하였다.

• 대한안전경영과학회지
• /
• 제11권2호
• /
• pp.77-85
• /
• 2009

Considering heat insulation and beautiful sight of construction, making use of exterior panels is increasing. Recently the exterior panels now are weak very much, and so in consequence of the weakness fire spreads rapidly. Compared with internal fire, external vertical fire spread rate goes rapidly and it is extensive in spread range, therefore it is dangerous very much. Accordingly, under present condition of poor standard of exterior panels, it is required to take measure to meet the appropriate situation. In this study, by making use of FDS(Fire Dynamic Simulation) program about external vertical fire of high rise building, fire behavior is searched by computer. It is important that realizing by computer fire modeling about external vertical fire must be included certainly in procedure of fire performance design in the future. In modeling program, FDS version 5 is available, and aluminium composite panel is applied in external panels. In this study, for realizing of actual fire condition, FDS is applied by details of fire scenarios considering influence of wind.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2015년도 춘계 종합학술대회 논문집
• /
• pp.21-22
• /
• 2015

This study aims to develop a current building condition database of an important folk culture village of South Korea considering their fire spread risk. We have selected a folk cultral village, and conducted field survey to reveal structure of buildings, materials of building wall, and roof style which make us understand current vulnerability of the village to fire spread. As a result, we made a current building condition database with map, which showed that the village had mixture of reinforced concrete and wood. Besides, we proposed a conceptual idea to prevent from large fire accident in the village.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2022년도 봄 학술논문 발표대회
• /
• pp.235-236
• /
• 2022

In the present study, the effect of horizontal vent position on fire phenomena in the enclosure with vertical and horizontal vents was examined using numerical simulation. Case 1 indicates the condition that the horizontal vent is in the center of the ceiling. Case 3 indicates the condition that the horizontal vent is far away from the vertical vent. Case 2 indicates the condition that the horizontal vent is installed between Case 1 and Case 3. The temperature distribution, smoke layer temperature, velocity distribution, and mass flow rate of horizontal vent flow were analyzed. In Case 2, the temperatures were lowest and the mass flow rate through the horizontal vent was largest. This is because the flame is inclined by the inflow through the vertical vent. Hence, to determine the proper horizontal vent location for the high smoke ventilation performance, the inflow through the vertical vent and its effect on flame behavior should be considered.

• 설비공학논문집
• /
• 제21권1호
• /
• pp.41-48
• /
• 2009

The present study has been performed to investigate the thermal characteristics of under-ventilated compartment fire which is a typical fire condition in structures. A series of fire experiments was conducted to characterize the thermally driven flow in a 2/5 scale ISO 9705 fire compartment. Three different fuels were used in this test series, methane gas, heptane pool, and polystyrene pellets fire. In order to measure accurate temperature, double shield aspirated thermocouples reducing the effect of radiative energy exchange on temperature measurement were used in addition to bare bead thermocouples. The upper layer temperature for well ventilated fire was increased with increasing heat release rate, but it was slightly decreased for under-ventilated fire. The measured temperatures in the upper layer at the front sampling location were higher than at the rear. Thermal characteristics through the doorway were also analysed for a wide range of heat release rates. This study provides a comprehensive and quantitative assessment of fire behavior for under-ventilation condition of fire.

• 한국화재소방학회논문지
• /
• 제23권3호
• /
• pp.121-130
• /
• 2009

본 연구에서는 문화재청에서 지정한 국가지정 중요목조문화재 124곳 중 중요사찰목조문화재 80곳에 대하여 2008년 6월부터 12월까지 각 사찰에 대해 현지조사와 사찰을 관장하는 각 관할소방서에 대한 화재진압 매뉴얼의 자료조사를 실시하였다. 조사내용은 문화재지정구분, 소재지구분, 사찰부지면적, 사찰 내 건축면적, 지정문화재의 건축면적, 화재발생시 화재진압을 위한 소방차의 진입방향, 소방관서와의 거리, 방화관리자의 지정현황을 조사하였다. 또한, 각 사찰의 문화재보유특성에는 사찰경내의 목조건물이 중요목조문화재로 지정이 되어 있는 경우와 석탑, 불상, 탱화, 종, 석등, 부도, 현판, 주련 등이 보유문화재로 지정되어 있어 각 문화재를 유형별로 이동 운반이 가능한 소산문화재와 이동 운반이 불가능한 불소산문화재로 분류 조사하였으며, 각 문화재의 재질을 조사하여 화재발생시 신속한 초기 대응과 문화재 피해 최소화를 위한 기초 연구결과를 정리하였다.