• Proceedings of the Safety Management and Science Conference
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• 2012.11a
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• pp.527-534
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• 2012

오늘날 기술의 발전으로 시스템들은 점차 대형화 복잡화 되어가고 있다. 이처럼 점차 대형화 복잡화 되어가고 있는 시스템들은 더욱 커진 사고 및 고장에 대한 위험을 내재하게 된다. 또한 대형 복합 시스템에서 발생하는 사고 및 고장은 바로 큰 재산피해나 인명피해와 직결 될 수 있다. 따라서 체계적인 안전관리의 필요성이 점차 커지고 있다. 이에 대응하여 철도, 항공, 해양 등의 산업에서는 각 산업에 적합한 안전관리체계를 수립하려 노력하고 있으며, 표준 및 매뉴얼을 제정하여 보급에 앞장서고 있다. 예로써 가장 활발히 안전관리체계의 도입을 추구하고 있는 항공 분야에서는 국제민강항공기구와 미 연방항공청의 주도로 안전관리체계에 대한 가이드와 매뉴얼을 만들어 각국의 사정에 맞는 안전관리체계를 도입할 수 있는 바탕을 제공 하고 있다. 이처럼 점차 중요해지고 있는 안전관리체계내에서도 위험원 식별 및 분석활동은 그 중요성이 크다. 이를 통해 도출되는 위험원 및 위험원의 영향 및 원인이 시스템 개발 및 운용에서 수행하게 될 안전관리활동의 바탕이 되기 때문이다. 따라서 위험원 식별 및 분석활동에 적용하기 위한 여러 기법에 대한 연구가 활발히 이뤄지고 있다. 본 논문에서는 여러 가지 위험원 식별 기법 중 HAZOP을 이용하여 고속철도시스템의 위험원 식별 및 분석을 수행 했다. 또한 HAZOP의 수행 및 위험원 식별 활동의 프로세스 모델을 제시함으로써 실질적인 위험원 식별 활동의 수행에 도움이 될 것으로 기대한다.

• The Journal of Korean Institute of Information Technology
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• v.16 no.11
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• pp.133-144
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• 2018

IEC 62278, the Railway System Safety Standard, requires for hazard analysis to prevent or control the hazard that the railway system may have. If hazard analysis is not performed sufficiently, there is a high probability that accidents will occur. For this reason, hazard analysis methods are actively studied. In this paper, we propose the hybrid hazard analysis method to combine two representative hazard analysis methods: reliability-based and system-theoretic. As the proposed method is complementary to existing ones, it covers both the hazard caused by failure of components and the hazard occurred from the unintended control between components. It applies to the development of a safety protection mechanism for multiple cruise control system that automatically control the speed of trains to avoid the collision among trains. As a result, we drive more safety requirements than the existing analysis methods and it turns out that the safety requirements protect the trains with respect to the identified hazards.

• Journal of KIISE
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• v.43 no.6
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• pp.662-667
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• 2016

As electric and electronic control systems have sharply increased in vehicles, safety accident has emerged as an important issue. Therefore, in order to ensure safety of the vehicle, engineers are required to identify the hazards utilizing PHA and HAZOP, etc. in the early phase of development and implement safety mechanisms to prevent them. HAZOP has been widely used in a systematic manner based on guidewords. However, HAZOP identifies malfunctions from the top-level functionality provided by the system, so it cannot sufficiently identify hazards during the system operation. This leads to restrictions in designing testcases, because the safety requirements are derived from only some of the hazards. This research aimed to provide a hazard identification method utilizing Use case description, which defines operation procedure of the system and HAZOP and a testcase design method based on safety requirements. We introduced a case study on Smart Key Control System in vehicles and compared with hazards identification results based on HAZOP, to demonstrate the effectiveness of this study. The result of this study could potentially reduce development cost and increase system quality by adequately identifying hazards and safety requirements and designing the related testcase.

• Environmental and Resource Economics Review
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• v.16 no.3
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• pp.683-699
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• 2007

This study applied the choice experiment (CE) method to measure values of statistical lives from multi-attributed mortality risk reduction choices. The four characteristics of mortality risk (i.e. cause of death, voluntariness of mortality risk, timing of death, magnitude of mortality risk reduction) are utilized to design the alternatives of choice sets. The estimation results for the multinomial logit model show that individuals are willing to pay 27,930 won per year for a change from the status quo to a $\frac{1}{100}$ mortality risk reduction for 10 years, 116,773 won per year for mortality risk reduction associated with adults, 97,682 won per year for voluntary mortality risk reduction, 77,234 won per year for involuntary mortality risk reduction. There were several estimates of VSL related to different attributes of mortality risk. The mean VSLs of infant/child/young adult ranged from 1,165 million won to 1,367 million won. The mean VSLs ranged from 1,631 million won to 1,833 million won for adult, and were between 1,128 million won and 1,330 million won for old person.

• 월간산업보건
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• s.374
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• pp.58-64
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• 2019

<2019 한국직업전망>이 발표되었다. 대표직업 196개 중 향후 10년간 수요가 증가할 것으로 보이는 19개 직업에 '산업안전 및 위험관리원'이 포함되었다. 고용정보원 홈페이지에 들어가 상세내용을 살펴보면 오랜 시간 연구, 분석한 자료임을 알 수 있다. <2019 한국직업전망>에서 다른 안전 관련 직종은 없었고 '산업안전 및 위험관리원'만 찾아볼 수 있었다. 산업안전 및 위험관리원은 앞으로 10년동안 1만 명 정도 그 수요가 더 늘어날 것으로 예상한다. 해당 분야는 '한국고용정보원 > 직업정보 > 한국직업전망 > 산업안전 및 위험관리원'으로 분류돼 있다. 그 주요 내용을 소개한다.

• Korean Security Journal
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• no.27
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• pp.31-49
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• 2011

The subjects consisted of 60 healthy men who absence of cardiopulmonary diseases, orthopedic diseases, and metabolic diseases. The difference of physical fitness, body composition, cardiovascular risk factors, and psychological characteristics for security guards' working type were examined using one-way ANOVA through SPSS 12.0 version and was treated for the post hoc test when the difference appeared significantly. According to the result, first, there were higher level for the physical fitness according to the security guards' position and it increases body composition and cardiovascular risk factors from higher position. Second, physical fitness level is higher, body composition and cardiovascular risk factors is lower in the security guards for the field service than the security guards on inside duty according to the security guards' working type. Third, it decreases body composition and cardiovascular risk level when the physical fitness level is getting increase for the security guards. In conclusion, it needs to have a physical activity with aerobic system for the security guards of leading members and inside service to decrease the overweight or obesity and cardiovascular risk level.

• Journal of the Korean Society for Railway
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• v.12 no.2
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• pp.260-266
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• 2009

The theory of risk is applied frequently in analysis of railway accidents. The aim of risk analysis is to search potential causes and contribution factors of accidents by checking the total system of construction field. This paper analyze a pattern and a cause of accident occupied in construction field, calculate risk index considering accident frequency and severity, and then provide the relative risk assessment. Based on this, this paper will provide the methodology of qualitative risk assessment guiding to reach a consistency of risk index with risk assessment.

• Korean Journal of Construction Engineering and Management
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• v.11 no.6
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• pp.14-23
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• 2010

A considerable number of construction disasters occurs on pathway. A safety management in construction sites is usually performed to prevent accidents in activity areas. This means that safety management level of hazards on pathway is relatively minified. Many researchers have introduced that a hazard identification is fundamental of safety management. Thus, algorithms for helping safety managers' hazardous area identification is developed using automated data collection technology. These algorithms primarily search potential hazardous area by comparing workers' location logs based on real-time locating system and optimal routes based on BIM. And potential hazardous areas is 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 improving safety in construction sites.

• Journal of the Korean Society for Railway
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• v.13 no.4
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• pp.455-461
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• 2010

We have identified which causes have influenced to accidents, case by case through a relational analysis on data of accidental case, root case, accident cause and hazard. The data on the accident of railway operation and system have been analyzed and the root cause, accident cause and hazard have been classified. This research has developed accident cause analysis system to build efficient railway safety policy which will be used to prevent railway accidents by government and railway operator.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.292-292
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• 2020

방조제는 국토 확장, 수자원 확보 및 배수 개선에 사용되는 구조물로, 재난 발생 시 자산, 국가산업 및 환경에 큰 영향을 끼칠 위험이 있다. 따라서, 파도월류, 지진, 투수, 액상화와 같은 다양한 피해 원인에 대비하여 구조적 사용성과 안정성을 확보하기 위해 신중한 검토 및 분석이 수행된다. 그러나 변화하는 환경조건에서 방조제는 다양한 외력의 변동성과 불확실성에 노출되며, 설계 시 고려된 손상 요인이 개별적으로 발생하기보다는 여러 요인이 복합적으로 반응하고 그 영향이 전달되어 피해의 발생과 전파 과정이 복잡한 양상을 나타낸다. 따라서 방조제에 대한 사고 예방 및 안정적인 유지관리를 위해서는 발생 가능한 위험을 종합적으로 고려한 위험도 평가가 중요하게 요구된다. 본 연구에서는 방조제 손상 원인 중 큰 비중을 차지하는 제체 내부 침식 위험에 대하여 위험인자 간 상호작용을 고려할 수 있는 확률통계학적 접근으로 Bayesian network 기법을 도입하였다. 위험인자에 대한 파괴 메커니즘을 조사하여 분류 후, 설계값과 측정자료를 기반으로 위험변수의 통계적 특성을 반영하기 위해 Monte Carlo 시뮬레이션을 수행하여 파괴 매커니즘의 위험도를 계산하였다. 위험도는 연간기대피해액으로 제공되었으며, 이는 방조제 손상으로 인한 피해에 대비하여 예방할 수 있는 솔루션을 제공할 것으로 기대된다.