Abstract

적재밀도가 높으며 수직적인 적재형태를 가지는 랙크식 창고는 화재발생 시 그 피해가 매우 심각하다. 이에 미국,일본에서는 자국의 랙크식 창고 실정에 맞는 In-Rack 스프링클러 및 수평차단막 등을 적용하여 화재확산을 최소화하는데 노력하고 있으나 국내의 경우, 그와 관련한 연구 및 제도가 전무한 실정이다. 이에 본 연구에서는 발화위치 및수평차단막 설치간격에 따른 화재특성 확인을 위해 국내 랙크식 창고 실정을 반영한 표준랙크를 대상으로 축소모델화재시험을 수행하였다. 그 결과, 수평차단막의 설치간격을 밀접하게 또는 빈번하게 할수록 약 30%씩의 수직 화재확산 억제성능이 발휘되는 것을 확인하였다. 아울러 수평차단막을 경계로 상하부의 온도를 측정한 결과, 차단막이 설치된 경우가 그렇지 않은 경우에 비해 온도분포가 약 2∼4배 이상 높은 것으로 나타나 수평차단막의 설치가 In-Rack스프링클러의 조기 작동에 도움을 줄 것으로 판단된다.A rack warehouse with a vertically loading type and high loading density has severe risks and damage during its fire. Inthis regard, US and Japan strive to minimize the fire spread by applying in-rack sprinkler, horizontal barriers, etc. corresponding to their own rack warehouse but there is no study and policy in Korea. Therefore, a model scale fire test wascarried out targeting the standard rack incorporating the national rack warehouse in order to check fire characteristics inignition points and installation distances of horizontal barriers in this study. As a result of the test, vertical fire spread of about30% was inhibited by narrowing its installation distance from 2-layer to 1-layer in an ignition condition of the flue space. In addition, as a result of the measurement of the temperature in the upper and lower parts of the horizontal barrier, thetemperature distribution showed about 2~4 higher in a condition with an installation of the barrier than that in the conditionwithout the barrier. Consequently, it is likely that the horizontal barrier will help the initial operation of in-rack sprinkler.

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