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석유화학 플랜트 시설물의 화재손상 특성에 관한 실험적 연구
조규환(Cho, Gyuhwan),안재권(Ahn, Jaekwon) 한국방재학회 2022 한국방재학회논문집 Vol.22 No.2
본 연구에서는, 석유화학 플랜트 시설물을 가정한 내화피복 적용 실험체를 대상으로 표준 및 탄화수소 화재에 노출시킨 후, 화재손상 진단 절차 중 1차 조사의 일환인 육안에 의한 외관 관찰과 더불어 수열온도를 확인하였다. 그 결과로, 내화피복 및 노출 화재 조건별로 내화피복의 변색, 두께 변화 등의 외관 상태에 대한 데이터를 축적하였으나 이를 바탕으로 실험체의 수열온도 추정을 위한 경향성을 확인하기에는 어려운 점이 있었다. 따라서 외관 관찰에 의해 화재손상 정도를 판단하는 방식은 다소 보수적으로 접근할 필요가 있다고 생각된다. 또한 실험체별로 수열온도를 실측한 결과에 의하면 도료의 경우 탄화수소화재에 노출될 시 내화성능을 유지하는데 다른 내화피복에 비해 다소 불리한 점을 확인하였다. As a part of the initial investigation of fire damage diagnosis, fire protection-applied specimens within petrochemical plant facilities were exposed to standard and hydrocarbon fire conditions; then, the heating temperature of the specimens was monitored, and their appearance was checked by visual observation. Although data on the appearance status for discoloration, thickness variations, etc. of fire protection were collated for each set of fire exposure conditions, it was difficult to estimate the heating temperature of the specimens. Therefore, the visual observation method for determining the degree of fire damage needs to be approached somewhat conservatively. Moreover, according to the results of the heating temperature measurements for each specimen, it was confirmed that the paint has a disadvantage in maintaining its fire resistance performance when exposed to a hydrocarbon fire.
조규환(Cho, Gyu-Hwan),여인환(Yeo, In-Hwan) 대한건축학회 2017 大韓建築學會論文集 : 構造系 Vol.33 No.11
Airborne chlorides is known as the deterioration external force of superstructure(an structure that is not directly contacting seawater) and is used as a boundary condition of the structure degradation prediction model so that it is necessary to estimate the correct value of airborne chlorides. However, it is difficult to quantify airborne chloride because it has various distribution and flow characteristics by surrounding weather conditions. In order to investigate the possibility of quantification of airborne chloride by using weather data, this study intends to carry out correlation analysis between the actual airborne chloride measured at actual marine environment and the weather data recorded or observed at monthly weather report, AWS(Automatic Weather Station) and anemovane. Results revealed a frequency of wind at the whole wind speed range(0<W(㎧)≦20) observed through the anemovane has the highest correlation with an average wind speed at the whole wind speed range(0<W(㎧)≦20) observed through AWS, as compared with other conditions. These results will be helpful to increase the possibility of quantifying the airborne chloride. In addition, a seasonal correlation analysis of airborne chloride and weather conditions shows the winter season has the highest correlation for them, compared to other season. Therefore, wind generated in winter has a very dominant effect on the distribution and flow of airborne chloride.
조규환(Cho Gyu-Hwan),박동천(Park Dong-Cheon),김우재(Kim Woo-Jae),안재철(Ahn Jae-Cheol) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
It is very important to measure the quantity of Incoming-salt generated in marine environment. However, the quantity of Incoming-salt is flexible depending on various meteorological factors of marine environment such as direction of the wind, speed of the wind, rainfall, humidity, temperature, etc. Therefore, to analyze the correlation with the quantity of Incoming-salt generated depending on respective meteorological factor, it is necessary to compare and examine according to fixed experimental factors by using experimental equipment that is possible for continuous experiment without external meteorological influences such as lab experiment. Thus, this study lays its emphasis on basic experiment to enhance the accuracy of system performance after developing artificial Incoming-salt generator.
석유화학 플랜트 시설물의 화재 온도분포 특성에 관한 해석적 연구
조규환(Gyuhwan Cho),전기수(Kisoo Jeon),안재권(Jaekwon Ahn) 한국방재학회 2023 한국방재학회논문집 Vol.23 No.1
일반적인 시설물과 달리 높은 인화성 및 가연성 물질을 취급하는 석유화학 플랜트 시설물의 경우, 취급하는 물질에 따른 다양한 화재조건들과 더불어 시설물의 구조형태(밀폐형, 개방형 등)들을 우선적으로 검토할 필요가 있다. 이에 본 연구에서는 석유화학 플랜트 시설물의 구조형태 3종을 가정하여, 화재조건별 화재 시뮬레이션을 수행하였으며 각 조건별로 도출된 공간온도분포를 분석하였다. 그 결과, 화재유형 및 화원의 종류와 더불어 시설물 구조형태에 따라서 다양한 온도분포 결과를 확인하였다. 이와 같은 결과들을 미뤄 볼 때, 생산 목적에 따라 다양한 물질을 취급하는 석유화학 플랜트 시설물의 경우, 설비/시설물의 배치 및 구조적 형태와 더불어 화재 시 발생할 수 있는 화재조건들을 종합적으로 검토하여 그에 상응하는 내화설계가 이루어져야 할 것으로 판단된다. In petrochemical plant facilities handling highly inflammable and combustible substances, it is necessary to preferentially review the frame type (closed or open) of the facility with consideration to the various fire conditions that may arise depending on the substances being handled. Accordingly, a fire simulation was carried out in this study for different fire conditions by assuming three frame types, and the spatial temperature distribution was analyzed for each condition. Various temperature distributions were found according to the fire type, fire source, and frame type of the facility. The results showed that petrochemical plant facilities handling diverse substances need to implement fire-resistant designs appropriate for the purpose of the facility by comprehensively considering the arrangement and frame type of the facility and the fire conditions that are likely to arise.
석유화학 플랜트 내화용 피복재의 화재손상 특성에 관한 연구
조규환(Gyuhwan Cho),안재권(Jaekwon Ahn),전기수(Kisoo Jeon) 한국방재학회 2023 한국방재학회논문집 Vol.23 No.3
As industrial facilities, petrochemical plants require prompt investigation, diagnosis, and recovery in the event of fire damage associated with disasters and accidents. Due to the characteristics of petrochemical plants, which are mostly composed of steel structures with fire-resistant coating materials, the coating materials are the first to be damaged. Accordingly, in this study, the fire damage characteristics of fire-resistant coating materials were analyzed experimentally, verifying the possibility of estimating the heating temperatures based on such characteristics. The results show a correlation between the foam expansion ratio and the heating temperature of intumescent fire-resistant coating materials with foam properties. A significant correlation was found between the density and adhesion strength ratio and the heating temperature of spray-applied fire-resistant coatings. The results suggest the possibility of estimating the heating temperatures based solely on the fire damage characteristics of the coating materials, which could provide a platform for simplifying existing methods for investigating and diagnosing fire damage.