• 한국안전학회지
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• 제34권6호
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• pp.13-21
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• 2019

Leakage accidents in businesses dealing with hazardous chemicals can have a great impact on the workers inside the workplace, as well as residents outside the workplace. In fact, there were cases where hazardous chemicals leaked from many businesses. As a result, the Chemicals Control Act(CCA) was enacted in 2015, the Ministry of Environment introduced an Off-site Risk Assessment(ORA). The purpose of the ORA is to secure safety from the installation of the design of the workplace facilities so that chemical accidents of hazardous chemical handling facilities do not cause human or physical damage outside the workplace. In general, the ORA qualitatively determines where a protected facility is within the scope of the accident scenario. However, elderly who belong to the sensitive group is more sensitive than the general group under the same chemical accident effect, and the extent of the damage is serious. According to data from the Korea National Statistic Office, the number of elderly people is expected to increase steadily. Therefore, a quantitative risk analysis considering the elderly is necessary as a result of a chemical accident. In this study, accident scenarios for 14 locations were set up to perform emergency evacuation due to toxic gas leakage of Cl₂(Chlorine) and HF(Hydrogen Fluoride), and the effects of exposure were analyzed based on the evacuation velocity difference of age 20s and 60s. The ALOHA(Areal Locations of Hazardous Atmospheres) program was used to calculate the concentration for assessing the effects. The time of exposure to toxic gas was calculated based on the time it took for the evacuation to run from the start point to the desired point and a methodology was devised that could be applied to the risk calculation. As a result of the study, the relative risk of the elderly, the sensitive group, needs to be determined.

• 한국재난정보학회 논문집
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• 제11권2호
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• pp.219-225
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• 2015

'12년 9월 발생한 (주)휴브글로벌 불산사고를 계기로 화학사고를 대하는 국민과 대응기관의 인식은 많은 변화를 가져왔다. 화학물질 취급업체는 소량 누출시에도 신속하게 대응기관에 신고절차를 이행하고, 대응기관은 사고대응에 많은 인력과 장비를 투입하였다. 많은 화학사고 중 현장대응요원의 대응활동을 어렵게 하는 사고는 사고발생물질을 확인하기 어려운 경우와 혼합 화학물질, 대응과정 중 방재활동 즉, 소화용수 등에 의해 2차로 오염물질이 생성되는 현상이다. 이러한 경우에는 추가적인 대응정보가 필요하다. 본 연구에서는 대응활동 시 이상반응에 의한 화학사고의 확대 또는 2차 생성물로 인한 피해상황을 맞이하는 대응요원에게 조금이나마 도움이 되도록 관련된 화학사고를 고찰하여 해결방안을 찾고자 한다.

• 한국산업보건학회지
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• 제30권1호
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• pp.39-49
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• 2020

Objectives: We investigated the status of accidents and deaths caused by chemical leakage and skin contact in Korea. The purpose of this study was to produce and provide technical reference data for the efficient management of accidents and the rational management of accidental chemicals. Methods: Accidents and deaths caused by chemical leakage and skin contact in industry were investigated. Based on 68 accident reports related to chemical leakage and skin contact, the causes of accidental deaths were analyzed. In addition, we investigated the chemical substances and articles that caused these accidents and deaths. Based on the results of the investigation, the causes of accidents caused by chemical leakage and skin contact were identified and practical management measures for the chemicals were suggested. Results and Conclusions: In 2018, 372 people suffered from chemical leaks and skin contact, up by 123 (about 49.4%) from the previous year. The number of accident deaths was 14, an increase of five (about 55.6%) from the previous year. In the last three years (2016-2018), 91 chemical substances and article groups were involved in accidents caused by chemical leakage and skin contact. There were 16 chemical substance and article groups involved in accidental deaths. There were ten cases of accidents involving two or more casualties due to chemical leakage and skin contact, and 23 deaths occurred. Most of these accidental deaths were caused by subcontractor workers outsourcing risks. Therefore, there is an apparent need to strengthen the responsibility for safety and health among subcontractors.

• 한국IT서비스학회지
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• 제19권4호
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• pp.13-30
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• 2020

Not only does it cause damage to individuals and businesses due to the occurrence of large-scale personal information leakage accidents, but it also causes many problems socially. Companies are embodying efforts to deal with the threat of personal information leakage. However, it is difficult to obtain detailed information related to personal information leakage accidents, so there are limitations to research activities related to leakage accidents. This study collects information on personal information leakage incidents reported through the media for 15 years from 2005 to 2019, and analyzes how the personal information leakage incidents occurring to companies are related to the characteristics of the company. Through the research results, it is possible to grasp the general characteristics of personal information leakage accidents, and it may be helpful in decision making for prevention and response to personal information leakage accidents.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2007년도 정기총회 및 학술발표대회
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• pp.561-564
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• 2007

This case was successfully constructed as a leakage prevention case of primary 2-arch tunnel located in Anyang, Gyungkido. The leakage of primary 2-arch tunnel was observed at middle wall of tunnel and girder of tunnel. Such a leakage of primary 2-arch tunnel generally occurred due to the damage of the waterproof membrane constructed on the middle wall during the blasting works of right and left tunnel after construction of the middle wall. As the leakage, icicles hanged from girder of tunnel in the winter. In such phenomenon, the risk of the traffic accident in the tunnel was high. In this case, leakage prevention works were successfully constructed using the heat insulated drainage.

• 한국추진공학회지
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• 제9권3호
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• pp.120-126
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• 2005

액체산소(LOx)와 케로신(Kerosene)을 연료로 사용하는 액체로켓엔진 시험설비에서 지상연소시험을 수행할 경우에 발생하는 위험도를 감소시키는 방법을 연구하였다. 본 방법은 잠재적인 사고 발생확률을 낮추고 그에 따른 발생 가능한 손실을 낮추기 위해서 사고 발생 가능한 한계선에 대한 연구와 기술적 해결방법을 바탕으로 하고 있다. 시험설비에서 사고 상황을 야기 할 수 있는 위험한 상황에 관한 개략도와 추진제 유출 사고시 발전 양상 및 발전 프로세스에 대한 도표, 기술적인 해결방법, 위험성 감소 평가 방법을 제시함으로써 기존의 확률적인 통계 값을 바탕으로 하는 것과는 또 다른 방법으로써 위험도 감소를 위한 대안으로 사용하고자 한다.

• Nuclear Engineering and Technology
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• 제53권2호
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• pp.393-398
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• 2021

Current risk assessment of Spent Nuclear Fuel (SNF) transportation has the problem of the incomplete risk factors consideration and the general particle diffusion model utilization. In this paper, the accident frequency calculation and the detailed simulation of the accident consequences are coupled by the integrated risk assessment method. The "man-machine-environment" three-dimensional comprehensive risk indicator system is established and quantified to characterize the frequency of the transportation accidents. Consideration of vegetation, building and turbulence effect, the standard k-ε model is updated to simulate radioactive consequence of leakage accidents under complex terrain. The developed method is applied to assess the risk of the leakage accident in the scene of the typical domestic SNF Road Transportation (SNFRT). The critical risk factors and their impacts on the dispersion of the radionuclide are obtained.

• 한국방재학회 논문집
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• 제7권5호
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• pp.111-118
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• 2007

최근에 들어와 가로등에 의한 감전사고가 지속적으로 발생하고 있다. 특히 집중호우로 인해 가로등이 침수될 경우 누전에 의한 감전 사고는 매우 높다. 전기감전사고가 발생할 경우 사고전압을 분석해 보면 주로 220V의 저압시설물에서 발생되고 있으나 이에 대한 위험성을 충분히 인식하지 못하고 있는 실정이다. 가로등 시설물의 사용전압 220V는 주로 일반인이 쉽게 접촉할 수 있는 도로변에 시설되어 있기 때문에 감전사고의 위험성은 매우 높은 편이다. 그러나 가로등 침수로 인해 누전이 발생했을 경우 누전체에서의 거리변화에 따른 수중전위분포가 인체에 미치는 영향을 연구하는 사례는 미약한 실정이다. 본 논문에서는 수중에서 누전이 발생했을 경우에 인체에 미치는 영향과 수중전위분포를 분석하고 수중에서 누전체와의 거리 및 깊이에 따른 변화가 어떻게 인체에 영향을 주는지 실험을 통하여 감전경로와 감전메카니즘을 비교 분석하고자 한다.

• 한국가스학회지
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• 제26권4호
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• pp.36-40
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• 2022

최근 산업계에서 가장 큰 화두는 산업안전보건관리에 대한 영역이다. 도시가스는 인화성 가스로 화재 및 폭발의 위험이 크기 때문에 중대 산업 및 시민 재해를 예방하기 위해 많은 노력이 요구된다. 본 연구에서는 도시가스 안전관리의 일환으로 Consequence Analysis를 통해 도시가스 누출에 의한 폭발사고 발생 시 피해 범위 및 정도를 정량적으로 예측하고자 하였다. 그 결과 압력, 기상상황 등 다양한 누출조건에 따라 분석결과 값에 차이를 보였다. 본 연구를 통해 도시가스 안전관리업무 수행 시 도시가스 누출에 의한 사고의 시나리오를 마련하여 보다 효과적인 사고예방과 비상조치계획을 마련하는데 활용할 예정이다.

• 전기학회논문지P
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• 제57권4호
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• pp.349-355
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• 2008

In this paper, a wireless remote monitoring system for leakage current of distribution board is developed. In the developed system, signals of the leakage current of distribution board are transmitted to a monitoring system using wireless communication. The developed system is consisted of a comparative module, control module, a wireless communication module, and hand held terminal. The developed system has any facilities which can check a leakage current with real time, send to the user this fact using a wireless remote interface method. And also developed system can take precaution for an accident by leakage current.