• Title/Summary/Keyword: 피난용량

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Egress Safety of Nursing Hospital Considering Egress Guides and Smoke Exhaust System (피난유도자 수와 배연설비를 고려한 요양병원의 피난안전성 평가)

  • Choi, Seung-Ho;Darkhanbat, Khaliunaa;Heo, Inwook;Kim, Kang Su
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.26 no.3
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    • pp.64-71
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    • 2022
  • In this study, fire and egress simulation was conducted for the egress safety evaluation of the nursing hospitals. A fire simulation was performed with or without the smoke exhaust system using the FDS, and the available safe egress time (ASET) of the nursing hospitals was calculated. In addition, an egress simulation considering the characteristics of occupants and egress delay time was performed using Pathfinder, and the required safe egress time (RSET) was calculated. By comparing the ASET and RSET, the egress safety of the nursing hospital with or without a smoke exhaust system was evaluated according to the number of egress guides and the egress delay time. The simulation results show that the number of casualties increased as the egress delay time increased, and the required safe egress time decreased as the number of egress guides increased. In addition, it was found that if a smoke exhaust system with the capacity specified in the KFPA is secured, the available safe egress time can be greatly increased and the number of casualties can be greatly reduced.

An Investigation Study on the Coefficient of Occupants Density for Performance Evacuation Capacity Computation in Buildings (성능적 피난용량산정을 위한 대형할인마트의 재실자밀도 계수 조사연구)

  • Seo, Dong-Goo;Shin, Yi-Chul;Lee, Jae-Young;Kwon, Young-Jin
    • Fire Science and Engineering
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    • v.23 no.5
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    • pp.1-8
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    • 2009
  • As the rapid and various changing of social aspects, the structures are getting bigger, higher and more complex. The importance of evacuation is on the rise as increased using frequency of multiplex sale facility and it's a high population density. According to the result of a survey with 4 domestic wholesales mart's population density, the maximum was 0.30, 0.46, 0.42, 0.38 人/$m^2$ in and 0.46 人/$m^2$). Considering evacuation dangerousness, the maximum value will be suitable for computation of evacuation capacity and this will be submitted as a basic DATA for computation of evacuation capacity.

A Study on the Calculation of Evacuation Capacity for the Development of Korean Life Safety Standards for Medical facilities (의료시설의 한국형 인명안전기준개발을 위한 피난용량 산정에 관한 연구)

  • Choi, Yun-Ju;Kim, Yun-Seong;Jin, Seung-Hyeon;Kwon, Young-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.92-93
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    • 2021
  • In the case of medical facilities, the evacuation time is delayed due to the decrease in the number of people in the hallway and exits due to the increase in the width of evacuation by using mobile beds, wheelchairs, crutches, etc. Accordingly, it is considered to secure evacuation capacity to reduce evacuation time according to corridor width and exit width. Accordingly, we would like to compare the standards related to the evacuation capacity of medical facilities in Korea and NFPA, derive differences, and use evacuation simulations to compare evacuation times according to changes in corridor width and exit width. In Korea, it is calculated based on the floor area by use, but in the case of NFPA 101, the number of evacuation routes, stair width, corridor exit width, and two-way door width was stipulated depending on the number of people. Using evacuation simulation, efficient evacuation capacity is calculated according to the reduction of evacuation time by changing the width of the hallway, changing the width of the exit, the width of the corridor, and the width of the exit. The evacuation simulation is intended to be used to secure evacuation safety of domestic medical facilities by calculating the effective evacuation time reduction by changing the width of the hallway and exit.

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A Study on the Design of Evacuation Route at Subway Station Using Simulation Analysis (Simulation 분석을 통한 지하철 역사 피난동선 설계 방안에 관한 연구)

  • Ham, Eun-Gu;Roh, Sam-Kew
    • Journal of the Korean Society of Hazard Mitigation
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    • v.10 no.5
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    • pp.1-7
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    • 2010
  • Since subway fire disaster at Daegu, Korea smoke control system and passengers evacuation distance has been focused to reform. Existing smoke control facilities need to expand volume of ventilation capacity however, the complicate subway station structure can hardly react dispersion of smokes from massive subway cabin fire. Smoke flow at platform level move upward thought vertical stairway and passengers evacuation goes with same direction. The victims of evacuees from subway station fire mainly due to exposure of heat radiation and smoke. The study demonstration the effect of downward evacuates stairway system by separating evacuation route to smoke movement pass way including saving times of evacuation.

A Investigation study on the evaluation of evacuation capacity for egress safety deign in Korea(III) (국내 PBD기반 피난안전설계를 위한 피난용량 산정에 관한 연구(III) - 수평적 군집피난속도식의 제안 -)

  • Seo, Dong-Goo;Hwang, Eun-Kyung;Hwang, Keum-Suk;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.334-339
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    • 2008
  • Recently the consideration for occupant's security has been raised as very important design element from the fire by building's large sized, higher storied, and its compounded. But the domestic laws regulated the predicative laws according to the technical standard which has no difference from the past domestic evacuation regulation. Therefore, regulation of escape code and developing technology for Korean conditions are needed to reduce victims during disaster by protecting occupant and guiding people to safe places.

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Analysis of the Effect of the Effective width of the Exit of the Evacuation Stairs on the Evacuation Time of the Occupants (피난계단 출입구 유효너비가 수용인원의 피난시간에 미치는 영향 분석)

  • Yang, Sung-Hoon
    • Journal of the Society of Disaster Information
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    • v.18 no.1
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    • pp.73-79
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    • 2022
  • Purpose: The purpose of this study was to investigate the relationship between the minimum effective width (90cm) of the exit of the evacuation stairway installed in accordance with the Building Act and the evacuation time of all occupants using the corresponding floor from an evacuation point of view. Method: The evacuation simulation (Pathfinder) was used to investigate how the change in doorway width affects the evacuation time of occupants. Result: It was found that as the effective width of the doorway became larger than the minimum standard of 90cm, the evacuation time to the evacuation stairs was shortened. This is also proof that the effective width of the evacuation stair entrance can be appropriately applied differently depending on the number of occupants on the floor. Conclusion: In the future, in order to secure evacuation safety of occupants, it is judged that the effective width standard for the exit of the evacuation stairway considering the total number of occupants by use is necessary. In addition, it is expected that the evacuation efficiency of occupants can be greatly increased if various effective width standards for entrances are made according to the number of occupants by use through research and experiments.

시뮬레이션 기법을 이용한 장대터널의 제연기술

  • Kim, Dong-Seok
    • 방재와보험
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    • s.111
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    • pp.20-27
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    • 2006
  • 피난길이가 긴 장대터널에서 화재가 발생되면 생성된 연기가 상승하고 천장을 만나 터널의 길이방향으로 전파된다. 연기의 독성가스에 의해 질식하게 되는 인명피해를 줄이기 위해서는 발생한 화재의 크기에 따라 제연유속이 필요하며, 제연 팬의 용량과 신뢰성을 확보해야 한다.

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A Study on an Adaptive Guidance Plan by Quickest Path Algorithm for Building Evacuations due to Fire (건물 화재시 Quickest Path를 이용한 Adaptive 피난경로 유도방안)

  • Sin, Seong-Il;Seo, Yong-Hui;Lee, Chang-Ju
    • Journal of Korean Society of Transportation
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    • v.25 no.6
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    • pp.197-208
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    • 2007
  • Enormously sized buildings are appearing world-wide with the advancement of construction techniques. Large-scaled and complicated structures will have increased difficulties for dealing with safety, and will demand well-matched safety measures. This research introduced up-to-date techniques and systems which are applied in buildings in foreign nations. Furthermore, it proposed s direct guidance plan for buildings in case of fire. Since it is possible to install wireless sensor networks which detect fires or effects of fire, the plan makes use of this information. Accordingly, the authors completed a direct guidance plan that was based on omnidirectional guidance lights. It is possible to select a route with concern about both time and capacity with a concept of a non-dominated path. Finally, case studies showed that quickest path algorithms were effective for guiding efficient dispersion routes and in case of restriction of certain links in preferred paths due to temperature and smoke, it was possible to avoid relevant links and to restrict demand in the network application. Consequently, the algorithms were able to maximize safety and minimize evacuation time, which were the purposes of this study.

A Study on the Escape capacity for Evacuation safety Design of PBD foothold in Korea(II) (국내 PBD기반 피난안전설계를 위한 피난용량 산정에 관한 연구(II) - 멀티플렉스 공간의 재실자밀도 조사 -)

  • Jo, Nam-Hun;Seo, Dong-Goo;Hwang, Eun-Kyung;Hwang, Keum-Suk;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.210-215
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    • 2008
  • As the rapid and various changing of social aspects, the structures are getting bigger, higher and more complex. The importance of evacuation is on the rise as increased using frequency of multiplex area and it's high population density. According to the result of a survey with 2 domestic multiplex population density, the maximum was 0.43(人/$m^2$) and 0.51(人/$m^2$). considering evacuation dangerousness, the maximum value will be suitable for computation of evacuation capacity and this will be submitted as a basic data for computation of evacuation capacity.

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A Study on the Fire Door Performance Method of Pressurized Room for Special Evacuation Stairwells (특별 피난계단의 부속실 출입문 성능 방안에 관한 연구)

  • You, Woo-Jun;Nam, Jun-Seok;Ryou, Hong-Sun
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2010.10a
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    • pp.12-16
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    • 2010
  • 본 연구에서는 건설현장의 특별 피난계단 출입문 크기와 구조의 다양성을 고려한 자동폐쇄장치의 설계방안을 제시하였다. 이를 위해서 급기가압실의 방연풍속, 누설량 그리고 송풍기의 용량이 일정한 경우 출입문이 폐쇄되기 위한 힘의 상관관계를 회전각도와 회전속도의 변화에 따라서 분석하였으며, 방화문의 폭이 1,100 mm, 1,300 mm 인 경우 각각에 대해서 개방력과 폐쇄력을 측정하였다. 그 결과 현장 조건을 만족할 수 있는 자동폐쇄장치에 의한 방화문의 폐쇄조건 및 회전각도와 회전속도의 변화를 고려한 개방력과 폐쇄력의 최적 설계범위가 존재함을 확인하였다.

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