• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.17-22
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• 2011

A considerable number of construction disasters occur on pathways. Safety management is usually performed on construction sites to prevent accidents in activity areas. This means that the safety management level of hazards on pathways is relatively minimized. Many researchers have noted that hazard identification is fundamental to safety management. Thus, algorithms for helping safety managers to identify hazardous areas are developed using automated data collection technology. These algorithms primarily search for potential hazardous areas by comparing workers' location logs based on a real-time location system and optimal routes based on BIM. Potential hazardous areas are filtered by identified hazardous areas and activity areas. After that, safety managers are provided with information about potential hazardous areas and can establish proper safety countermeasures. This can help to improve safety on construction sites.

• 한국위험물학회지
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• 제6권2호
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• pp.62-67
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• 2018

It is very important to classify explosion hazardous area in order to prevent an accident explosion. In order to prevent such a explosion, the Industrial Safety and Health Standards Rules stipulates the establishment and management of explosion hazards in accordance with the criteria set by the Korean Industrial Standards. This study has investigated the range of the explosion hazardous area according to various hole sizes, pressures, vapor densities, and wind velocities in the outdoor flammable liquid tank using KS C IEC-60079-10-1 $2^{nd}$ Ed.(=IEC CODE) and PHAST. The results show that the explosion hazardous areas by IEC CODE have circle shapes. However, the areas by PHAST show ellipse shapes. The different of the explosion hazardous areas increases with the increase of wind velocity.

• 한국환경보건학회지
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• 제41권4호
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• pp.259-267
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• 2015

Objectives: This study evaluated the regional and seasonal concentrations of ambient hazardous heavy metals in an industrial complex area in Daegu City. Methods: A total of 64 SPM (Suspended Particulate Matter) samples were collected in non-industrial and industrial areas during 2014 and were analyzed for hazardous heavy metals elements (As, Cd, Mn, Ni, Pb) with ICP after acid extraction. Results: SPM and hazardous heavy metals concentrations showed regional (industrial complex area>non-industrial complex area) and seasonal (spring, winter>fall, summer) variations. All of the hazardous heavy metals were influenced by anthropogenic sources. The pollution index of hazardous heavy metals was very low, showing roughly one-quarter of the level of the air quality guidelines of WHO. The correlation analysis among SPM and hazardous heavy metals indicated that components of non-industrial complex areas were more related to each other than those of industrial complex areas, and the correlation in the winter was higher than in other seasons. Conclusion: It is necessary to control air pollution sources and establish related policy because hazardous heavy metals from industrial areas can influence residential areas.

• 대한안전경영과학회지
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• 제12권1호
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• pp.35-42
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• 2010

Due to the industrialization and urbanization, the transport of hazardous materials increases, which rises possibilities in occurring prospective accidents in terms of hazardous material transport as well. This study applied the model developed from the previous research to analyze the scale of damage areas from the accidents related to hazardous material accidents, as well as suggested a method to measure automatically the scale of accident including casualties and environmental damage based on the guideline which suggests the quantities of hazardous materials exposed from an accident and was defined in the study of standardization for hazardous material classification. A buffering analysis technique of Geographic Information System (GIS) was applied for that. To apply the model which evaluates the scale of population and exposure to environment on each link, rail network, zones, rail accident data, rail freight trips, and locations of rivers etc were complied as a database for GIS analysis. In conclusion, a method to measure damage areas by the types of hazardous materials was introduced using a Clip and a Special Join technique for overlay analysis.

• Journal of international Conference on Electrical Machines and Systems
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• 제1권1호
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• pp.128-134
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• 2012

This paper gives an overview of the requirements for electrical equipment in potentially explosive atmospheres and describes how these are applied to electrical machines and drives in hazardous areas. The method by which equipment can be shown to be safe in a whole range of gases, by testing in a single test gas, is covered. It is shown how the more recently introduced methods of protection for hazardous areas, increased safety and nonsparking, are ideally suited to AC machines and drives. A novel method of measuring the fullload temperature rise of electrical machines for hazardous, and other areas, without the need to connect a mechanical load to the machine's drive shaft is explained.

• 한국건설관리학회논문집
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• 제11권6호
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• pp.14-23
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• 2010

건설 산업의 재해 중 상당 부분은 작업자의 이동 중 발생한다. 건설 현장의 안전관리는 작업을 중심으로 수행되며, 이는 이동 경로에 존재하는 위험원에 대한 안전관리 수준을 상대적으로 낮게 만든다. 많은 연구자들이 위험원을 인지하는 것이 안전관리의 기본임을 제시하였다. 따라서 본 연구에서는 자동화 데이터 수집기술(Automated Data Collection)을 이용하여 작업자의 이동경로에 존재하는 위험원에 대한 안전관리자의 인지를 지원하는 모델을 개발하였다. 모델은 실시간 위치추적기술 기반의 작업자의 위치정보와 BIM을 통한 최적이동 동선의 비교를 통해 일차적으로 위험 가능 지역을 찾는다. 그리고 기존 위험지역과 작업지역을 필터링함으로써 위험 가능 지역을 폭을 좁힌다. 이를 바탕으로 안전 관리자는 위험원이 존재할 가능성이 높은 지역에 대한 정보를 제공받고, 현장의 상황에 맞는 안전관리대책을 수립할 수 있을 것이다. 본 연구에서 제시된 모델을 통해 발견하지 못한 채 남을 수 있는 위험지역을 인지함으로써 안전관리 프로세스 범위에 속하지 않는 위험원을 줄일 수 있으며, 이를 통해 건설 현장의 안전 향상에 도움을 줄 것이라 예상된다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1769-1778
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• 2009

산업의 발달 및 도시화의 증가로 인해 위험물질을 포함한 물류 수송량은 날로 증가하는 추세이고 위험물질 수송차량들의 사고발생 위험도 따라서 증대되고 있다. 본 연구에서는 위험물 운송이 점차 증가하고 있는 철도수송에 있어 기존 선행 연구의 피해규모 분석모형을 적용하고, 위험물 물류 표준화 연구에서 정의된 물질별 사고노출량을 기준으로 하여 위험물 물질별 인구 및 환경 노출규모를 GIS(Geographic Information System)의 버퍼링 분석 기 법을 통하여 일반적으로 분석이 어려운 피해규모산정을 자동으로 도출하는 방안을 제시하였다. 각 링크별 인구 및 노출규모 산출 모형을 적용하기 위해서는 Network(철도망), Zone(행정구역), 철도사고 Data, 철도화물 통행량, 하천 및 강 등을 GIS Database로 구축하였고, 최종적으로 Buffering 분석과 함께, 중첩분석의 Clip 기법과 Special Join 기법을 함께 사용하여 본연구의 제시한 위험물 물질별 피해규모 자동 추출 방안을 제시해 보았다.

• 한국수소및신에너지학회논문집
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• 제30권1호
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• pp.29-34
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• 2019

Safety of hydrogen handling facilities is needed as supply of hydrogen cars has been expanded recently. In this study, the adequacy of safety regulations of hydrogen handling facilities and the risk of damage with hydrogen leakage were studied. The range of explosion hazard location of the hydrogen filling plant was investigated using the computational fluid dynamics (CFD) method, Explosive hazardous area is influenced by leakage type, hole size and sectional area. When the conditions of KS standard are applied, range explosive hazardous area is expanded 7.05 m, maximum. It is about 7 times larger than exceptional standard of hydrogen station. Meanwhile, distance from leakage point to 25% LEL of hydrogen is investigated 1.6 m. Considering the shape of charging hose, regulation of hydrogen station is appropriate.

• 자원환경지질
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• 제46권3호
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• pp.247-256
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• 2013

재해위험지구 정비사업의 질적 수준제고를 위하여 재해위험지구 정비 사업을 대상으로 비용 대비 편익을 분석하였다. 최근의 재해이력을 고려하여 8개의 분석대상 지구를 선정하였고, 비용편익비(B/C)를 사용하여 투자효과를 분석하였다. 편익 산정은 해당지역의 과거재해이력을 활용하였으며, 비용은 총사업비로 평가하였다. 8개의 분석대상 지구에 대한 분석결과는 영향범위, 할인율 등의 인자에 따라 다른 범위에서 1보다 큰 B/C를 보여주고 있다. 분석결과에 따르면, 4% 할인율과 5 km 영향거리 조건에서 8개 대상 지구에 대한 평균 B/C는 4.1로 1이상을 나타내는 것으로 확인되었다. 이러한 결과로 볼 때 재해위험지구 정비 사업은 비용 대비 효율이 높을 것으로 판단된다.

• 한국안전학회지
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• 제33권3호
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• pp.65-70
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• 2018

Terrain data for disaster analysis in hazardous or disaster areas is not only important but also needs to be built quickly. In particular, the introduction of drones is in the early stages of research using drones in a variety of fields such as shooting, analyzing and managing hazardous areas. It is expected that drone will be faster, safer and more effective than existing data collection method in case of small scale disaster hazard area and disaster area where equipment or manpower input is difficult. Therefore, in this study, drone shooting was performed for hazardous areas in mountainous roads located in Samcheok city, Gangwon province, and ground reference points were measured by RTK-GPS. The measured data were converted into DSM (Digital Surface Model) data by coordinate correction using Pix4D postprocessing program and then applied to the analysis of the hazard area of mountainous area. As a result, it was shown that it is effective to identify the risk by using the basic terrain data obtained from the drones.