• Review of KIISC
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• v.22 no.5
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• pp.62-72
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• 2012

스마트그리드는 전력시스템과 이를 제어하기 위한 통신 인프라를 중심으로 다양한 시스템이 서로 통합되는 종합적인 플랫폼으로 이해할 수 있다. 기존에 각기 독립적으로 운영되는 시스템과 통신 인프라가 통합되기 시작하면서 다양한 상호작용이 파생되고 그로 인해 잠재적인 보안 측면의 위험성도 커지게 된다. 전통적인 전력시스템은 폐쇄적인 SCADA 네트워크를 기반으로 운영되었기 때문에 최소한의 보안강도가 보장되었지만, 스마트그리드 하에서는 개방형 통신망과 연계되면서, 기존의 사이버 보안 위협들이 전력시스템으로 유입하게 된다. 기존의 IT 시스템과는 달리 전력시스템과 같은 제어시스템은 물리적 작동과 공정이 수반되기 때문에 새로운 위험이 발생하기도 하고 기존의 위험이 증폭되기도 한다. 전력시스템에서는 가용성이 그 무엇보다 중요하기 때문에, 스마트그리드 체제하에서의 다양한 위협요인을 미리 파악하고 이에 대비한 계획을 수립함으로써, 그러한 가용성의 수준을 유지할 필요가 있다. 이를 위해서는 기존의 사이버 위협이 어떠한 경로를 통해 전력시스템에 영향을 미치게 되며 그로 인한 잠재적 위험이 얼마나 되는가를 평가할 필요가 있다. 그러나 스마트그리드는 아직까지 구축중인 미래형 시스템이고 누적된 과거 데이터가 없기 때문에 가상의 하드웨어 기반 테스트베드 내지 소프트웨어 기반의 시뮬레이션 모델을 통해 이를 사전적으로 테스트할 필요가 있다. 또한 스마트그리드는 서로 다른 IT 시스템과 물리적 설비들이 결합되는 복잡한 시스템이라는 측면에서, 잠재적으로 발생 가능한 다양한 위험을 분석하고 평가할 수 있는 모델의 수립이 요구된다. 본고에서는 그러한 CPS 기반 시뮬레이션 모델에 대한 현재의 연구동향을 검토하고, 향후 실질적으로 구현하기 위한 방안을 제안하고자 한다.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.3
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• pp.1-13
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• 2006

The aim of the study is to assess groundwater pollution hazard of Pohang city using the DRASTIC system developed by the US Environmental Protection Agency (USEPA). Hydrogeological spatial databases of the system include information on depth to groundwater, net recharge, aquifer media, soil media, topographic slope, hydraulic conductivity, lineament and potential pollution source. With GIS based on these hydrogeological databases and the DRASTIC system, the regional groundwater vulnerability of the study area was assessed. Then the vulnerability was overlaid with potential pollution source and the regional groundwater pollution hazard was assessed by administrative district. From the results of the study, areas where need the counter plan for groundwater pollution and where should be managed for the groundwater pollution, are identified.

• Journal of the Korean Society of Hazard Mitigation
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• v.2 no.4 s.7
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• pp.117-122
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• 2002

A large number of accidents at an underground place have been happening, including the gas explosion under construction of subway, the fires of underground utility and underground shopping malls, and other explosion, at home and abroad recently. These accidents make the function of a city ineffective due to the paralyses of electricity and communications net as well as the loss of property, and cause people to feel unsecured with accompaniment of a heavy of toll of lives. This study suggests safety assessment items and fire protection assessment technique for underground shopping malls by extracting dangerous elements in the management stage through examination of related accidents, documents and present conditions.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2002.05a
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• pp.346-355
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• 2002

THERP (Technique for Human .Error Rate Prediction) 방법론은 원전의 확률론적 위험성 평가(PSA)시 운전원과 작업자의 인간오류평가에 가장 널리 사용되고 있는 방법이다. HRA Handbook이라고도 불리는 이 모델은 운전원 행위를 시스템 부품의 한 요소로 가정하고 인간오류를 평가한다. 본 논문은 이 방법론을 이용하여 원전 등과 같이 위험시설물 중의 하나인 개스밸브기지에서의 작업자 보수시 인적오류를 평가하고 기계적 오류와 합께 인적오류의 기여도를 계산하였다 본 방법론은 원전, 개스밸브기지 뿐만아니라 석유화학 플랜트와 같은 위험시설물의 인적오류 평가에도 유연하게 사용될 수 있음을 보여주었다.(중략)

• Journal of Internet Computing and Services
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• v.7 no.1
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• pp.31-38
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• 2006

The importance of the Security Risk Analysis has emerged as security breaches and information leaks has occurred in the companies and organization: threats toward information system and its vulnerabilities has grown up as the dependence on the information-communication systems goes higher as a result of technological advances in IT industry, A Risk Analysis Tool helps to mitigate overall risk of an organization by analysing and evaluating critical information systems and providing security measures against threats to systems and its vulnerabilities as a means to identify the inherent dangers and prevent security intrusion incident, This paper defines risk analysis process by introducing Common Criteria Scheme and suggest a risk analysis tool that can be easily implemented by an information security manager.

• Fire Science and Engineering
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• v.14 no.3
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• pp.27-32
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• 2000

The assessment of wildland fire hazard is the first priority to be considered in the prevention, extinction and control of wildland fire. For the standard to measure wildland fire hazard, the wildland fire Warning System is currently being used in Korea which computes the wildland fire occurrence hazard index through a stick weight to moisture conversion formula. It shows the risk of fuel substance being exposed to fire by meteorological factors. For a comprehensive assessment of wildland fire hazards by area, the major factors'hazards need to be measured and the assessment of wildland fire needs to be conducted through historical statistic examination. Therefore, the wildland (ire outbreak frequency and its seriousness of damage are analyzed through historical statistic examination to conduct the assessment of a wildland fire hazard, and then the calorific value of a forest is analyzed through differential scanning calorimeter measurement which assesses the comparative calorific hazard according to the geographical distribution of vegetation.

• Journal of the Korea Institute of Military Science and Technology
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• v.2 no.2
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• pp.197-208
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• 1999

Recently, risk management is a very important issue in many industrial applications. This paper describes a general structure for risk management and suggests a new risk assessment methodology. In risk management applications of financial or insurance industries, there are many methodologies developed for practical use. However, areas for improvement exist to facilitate the application of the methods. Two major risk assessment methodologies have been developed and widely applied in system engineering. One is in its original development application from aerospace and defense industry, and the other was developed in applied software engineering. In a large and complicated system development application, an effective risk management can reduce total development cost as well as uncertainty in achieving project goals of schedule and performance.

• Journal of the Korean Institute of Gas
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• v.6 no.4 s.18
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• pp.53-58
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• 2002

In this research, the goal is to ascertain the potential danger when transporting hazardous material by considering the important elements that contribute to such situation, instead of relying on the quantitative risk assessment of fixed facilities. Also, this study will verify the social and personal risk according to damage zone limits, by applying the worst case scenario and the alternative scenario that occur during the transportation process. Moreover, it has selected the optimum transportation route for maximum safety. The result of this research could be used to construct a systematic emergency system that can minimize the damage from serious industrial accidents, by effectively decreasing the danger zone and forming a connection between the community, the society, and the industries according to such evaluations.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.679-682
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• 2003

정보시스템관리를 위한 위험분석시스템은 다수의 사용자가 각각의 역할과 임무에 따라 평가대상조직의 민감한 내공을 다루므로, 대상조직에 대한 역기능을 초래할 수 있다. 이에 위험분석시스템 자체의 보안을 위한 접근통제가 필요하다. 본 논문에서는 위험분석시스템을 위한 RBAC정책 모델을 제안한다. 제시한 모델은 위험분석시스템의 특성을 고려하여 연구되었으며, 역할의 상속성에 의한 권한남용 방지를 위해 금지적접근목록(n-ACL)을 적용하였다.

• Journal of the Korean GEO-environmental Society
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• v.20 no.1
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• pp.19-25
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• 2019

In this present study, to evaluate the applicability of the monitoring system of the entire reservoir dam facility using the wireless sensor network system and a section representative of the domestic reservoir dam was selected as the test bed site and to operated a system that can evaluate the condition of the facility at the real time with monitoring. In order to set up a wireless sensor network system, the system assessment of present state was carried out for confirmation the risk factors and the limit values of the risk factors in limit state were calculated. The type and position of the sensor to be measured in the field were determined by setting the measurement items suitable for the hazardous area and the risk factor. In this paper, we evaluated the feasibility of the system by monitoring and constructing a wireless sensor network system in a field for a fill dam that can represent a domestic reservoir dam. Applicability evaluation was verified by comparing directly with the measurement of partial concentration method which is the measurement management technology of the dam.