• 한국안전학회지
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• 제18권3호
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• pp.88-93
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• 2003

The Process Safety Management (PSM) by the Law of Industry, Safety and Health has been performed for preventing major accidents of chemical plants since 1996. In terms of preventing chemical accidents more precisely, it is essential to develop a tool for quantitative risk assessment. For this, KOSHA (Korea Occupational Safety and Health Agency) developed an Integrated Risk Management System (IRMS). The system is designed to assimilate data on chemical plant hazards from external database, to integrate these data with location information(topographic and demographic), and to make them user-friendly accessible. The system consists of several main functions: display of five major Korean petrochemical complex layout display of equipment layout with its information utilizing the external database, zonation of the hazard effected area with consequence analyses, the most probable accident scenario generation, accident/incident database and calculation of frequency of accident using equipment reliability database, etc. The highlight of IRMS is to provide the risk contours using GIS(Geographical Information System) technology. IRMS is intended to manage hazardous installation more systematically and effectively, to reduce the number of accident remarkably, further minimizing production loss in the plant. The system is now under application to about 500 PSM sites as well as and emergency authorities in Korea by KOSHA (Korea Occupational Safety and Health Agency)

• 한국가스학회지
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• 제12권2호
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• pp.118-123
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• 2008

도시에는 에너지 시설물로서 고압가스 저장시설 및 고압가스 배관 등 위험물을 취급하는 시설이 산재해 있고, 이런 시설들의 효율적인 위험성 분석 및 관리시스템의 부재로 사고 가능성이 상존하며 선진국에 비해 상대적으로 높은 사고율을 보이고 있다. 에너지 시설물에서 발생하는 사고는 시설 자체의 막대한 피해 뿐만 아니라 시설 주변 지역에 미치는 영향이 매우 크므로, 본 연구에서는 사고영향 분석을 통한 비상대응 시스템을 적용하여 사고피해 정도에 대한 정보를 이용한 체계적인 대응체제를 구축하였다.

• 한국정밀공학회지
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• 제30권1호
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• pp.47-52
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• 2013

In order to operate a search and rescue robot in hazardous area, the robot requires high mobility and adaptable locomotion for moving in unpredictable environments. In this paper, we propose the deformable soft wheel robot that can produce three kinds of driving modes; caterpillar driving mode, normal wheel driving mode, legged-wheel driving mode. The robot changes its driving mode as it faces the various obstacles such as a small gap, stairs etc. Soft film and composite materials are used for fabrication of deformable wheel structure and Shape Memory Alloy (SMA) coil spring actuators are attached on the structure as an artificial muscle. Film lamination and an composite manufacturing process is introduced and the robot design is required to be modified and compromised to applying the manufacturing process. The prototype is developed and tested for verifying feasibility of the deformable wheel locomotion.

• 한국산업보건학회지
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• 제23권1호
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• pp.11-19
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• 2013

Backgrounds: Occupations are grouped on the basis of similarity in tasks and duties performed. Standard occupational classification (SOC) is a tool for organizing all professions into a clearly defined set of groups according to the tasks and duties undertaken in the respective jobs. Objectives: The major objective of this study is to comprehensively review how a SOC system is used in occupational and safety fields such as surveillance, exposure monitoring, occupational epidemiological study, management of carcinogens and analysis of occupational accidents. Methods: We summarized the cases, policies and regulations used in SOC systems in advanced countries and as they appear in articles Results: We found that SOC systems have been widely used in various areas of occupational safety and health in the US, the UK, Finland, and the EU. In general, it is highly common to use SOC in the analysis of occupational accidents and diseases and to identify factors causing those accidents. The SOC system is also used not only for surveillance of exposure to hazardous agents and occupational health, but to manage carcinogens. In order to adjust the effects of a particular job, SOC is used in the general population health area. The Ministry of Employment and Labor (MOEL) has never used or introduced an SOC system. There have been no cases of the application of a SOC system to either the occupational safety and health field or to health surveillance for the general population in Korea. Conclusions: We suggested a need to introduce an SOC system in several occupational safety and health activities, such as work environment measurement, analysis of occupational accidents, specific physical examination and surveillance systems, etc.

• 산업경영시스템학회지
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• 제38권4호
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• pp.72-79
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• 2015

A number of plating companies have been exposed to the risk of fire due to unexpected temperature increasing of water in a plating bath. Since the companies are not able to forecast the unexpected temperature increasing of water and most of raw materials in the plating process have low ignition temperature, it is easy to be exposed to the risk of fire. Thus, the companies have to notice the changes immediately to prevent the risk of fire from plating process. Due to this reason, an agile and systematic temperature monitoring system is required for the plating companies. Unfortunately, in case of small size companies, it is hard to purchase a systematic solution and be offered consulting from one of the risk management consulting companies due to an expensive cost. In addition, most of the companies have insufficient research and development (R&D) experts to autonomously develop the risk management solution. In this article, we developed a real time remote temperature monitoring system which is easy to operate with a lower cost. The system is constructed by using Raspberry Pi single board computer and Android application to release an economic issue for the small sized plating manufacturing companies. The derived system is able to monitor the temperature continuously with tracking the temperature in the batch in a short time and transmit a push-alarm to a target-device located in a remoted area when the temperature exceeds a certain hazardous-temperature level. Therefore, the target small plating company achieves a risk management system with a small cost.

• 한국방재안전학회논문집
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• 제12권2호
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• pp.65-72
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• 2019

한국은 국토의 64%이상이 산지로 구성되어 있어 산지재해에 취약한 지형적 특성을 가진다. 연구대상지역인 태백산국립공원 당골유역은 탐방로 대부분이 급경사지와 인접해 있어 집중호우 시 산사태와 토석류에 취약한 지역이다. 본 연구에서는 결정론적 분석방법인 사면안정성 모델을 이용하여 사면재해 발생예측 가능성을 검토하였다. 모델의 매개변수는 정밀토양도의 토양분류에 따라 토질의 단위중량, 유효점착력, 흙의 내부마찰각, 유효토심, 지표경사 등을 이용하였고 1 m격자의 DEM을 바탕으로 사면안정성 평가를 실시하였다. 사면안정성평가 분석결과 지하수/ 유효토심과의 비가 1.0에 가까워질수록 위험지역이 높게 나타났으며, 국립공원 하류지역의 민가와 상업시설 상당수가 위험에 노출된 것으로 나타났다.

• 한국지반환경공학회 논문집
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• 제20권1호
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• pp.19-25
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• 2019

본 연구에서는 무선 센서 네트워크 시스템을 이용한 저수지 댐 시설물 전체의 모니터링 시스템의 적용성을 평가하고자 국내의 저수지 댐을 대표할 수 있는 구간을 시범구축 현장으로 선정해, 계측과 동시에 시설물의 상태를 평가할 수 있는 시스템을 구축, 운영하였다. 무선 센서 네트워크 구축을 위해 시설물의 현재 상태를 평가하여 위험인자를 도출함과 동시에 극한상태에서의 위험인자의 한계값을 도출하였다. 위험구역, 위험인자에 적합한 측정항목을 설정하여 현장에서 측정할 센서의 종류 그리고 위치를 결정하였다. 국내의 저수지 댐을 대표할 수 있는 필댐을 대상으로 현장에서 무선 센서 네트워크 시스템을 구축하여 모니터링 함으로써 시스템의 적용성을 평가하였으며, 현재 댐의 계측관리 기술인 부분 집중방식의 계측과 직접 비교함으로써 시스템의 적용성을 검증하였다.

• Journal of Nutrition and Health
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• 제54권4호
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• pp.342-354
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• 2021

Purpose: Obesity is a serious public health issue for the modern society and is considered a chronic health hazard. There are many surgical and pharmacological approaches to treat obesity. However, various potentially hazardous side effects remain the biggest challenge. Therefore, diets based on foods derived from natural products have gained increasing attention compared to anti-obesity drugs. Recently, research on edible insects as a food source has been a topic of considerable interest in the scientific communities. This study examined the anti-obesity effects of ingesting an edible insect by feeding a high-fat diet (HFD)-induced obese mouse models with a diet containing Tenebrio molitor larvae powder (TMLP). Methods: Six-week-old female C57BL/6J mice were divided into 4 groups according to treatment: 100% normal diet (ND), 100% HFD (HFD), HFD 99% + TMLP 1% (TMLP), and HFD 97% + TMLP 3% (TMLP 3%). TMLP was added to the HFD for 6 weeks for the latter two groups. Results: Compared to the HFD group, mice in the TMLP group showed weight loss, and micro-computed tomographic imaging revealed that the volume of the adipose tissue in the abdominal area also showed significant reduction. After an autopsy, the fat weight was found to be significantly reduced in the TMLP group compared to the HFD group. In addition, the degree of fat cell deposition in the liver tissue and the size of the adipocytes significantly decreased in the TMLP group. Reverse transcription polymerase chain reaction analysis for the mRNA expression of adipogenesis-related genes namely CCAAT-enhancer-binding proteins (C/EBP-β, C/EBP-δ), and fatty acid-binding protein 4 (FABP4) showed that the expression levels of these genes were significantly reduced in the TMLP group compared to the HFD group. Serum leptin level also decreased significantly in the TMLP group in the comparison with the HFD group. In addition, total cholesterol, triglyceride, and glucose levels in mouse serum also decreased in the TMLP group. Conclusion: Taken together, our results showed that TMLP effectively inhibited adipocyte growth and reduced body weight in obese mice.

• 환경영향평가
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• 제31권4호
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• pp.250-264
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• 2022

현행 환경영향평가 체계 내 건강영향평가 대상사업은 「환경보건법」 시행령 제12조(건강영향 항목의 추가·평가 대상)에 따라 일부 대상사업으로 한정되어 있으나, 대상사업이 아닌 다양한 환경영향평가 대상 사업들에 대해서도 협의과정에서 건강영향 관련 사항들이 추가로 평가·검토되고 있다. 특히 주거지 관련 개발계획에 있어 개발부지가 오염원 주변에 계획될 경우 건강영향 측면에서의 입지 타당성 확보 여부를 평가·검토하게 되는데, 개발부지에서 주요 유해대기오염물질들의 현황농도 조사를 통한 위해도 기준 만족 여부를 확인하여 사후관리 방안을 마련하는 수준에 그치고 있다. 본 논문에서는 주거지 개발계획에 있어 개발하고자 하는 주거지역에 대한 입지의 타당성을 확인하는 정량적 방법을 마련하고 환경영향평가 절차 내에서 건강영향평가 대상사업의 확대 방안을 제안하고자 하였다. 환경영향평가 체계의 스크리닝 및 스코핑 절차를 검토하여 세부 방법론을 제안하였으며, 방법론 검증을 위해 과거 협의된 도시개발계획에 대한 사례분석을 진행하였다.

• 공업화학
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• 제33권5호
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• pp.466-470
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• 2022

최근 촉매 소각 공정은 휘발성 유기 화합물을 저온(< 450 ℃)에서 고효율(> 95%)로 산화 및 분해하기 위해 상당한 주목을 받고 있다. 많은 귀금속 촉매 물질이 잘 연구되어 사용되고 있으나 단가가 비싸고 위험하다. 본연구에서는 Cu와 Mn 전구체의 공침법을 활용하여 간단하고 손쉬운 합성 방법을 개발함으로써 고활성 및 저비용의 Cu-Mn 바이메탈 촉매를 제조하였다. 촉매 합성은 Cu와 Mn의 조성비를 조절하여 최적화하였다. 최적화된 촉매는 메조포러스 구조로 230.8 m²/g의 넓은 표면적을 나타냈다. 촉매 성능을 입증하기 위해 에틸 아세테이트의 산화 반응에 대해 Cu-Mn 촉매를 테스트했으며, 250 ℃의 저온에서 100%의 높은 전환 효율을 나타내었다.