• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.133-134
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• 2023

유해위험한 물질을 다루는 사업장 내에서는 폭발·화재·누출 등의 사고가 발생할 가능성이 상시 존재하므로 사고를 미리 예방하고 위험성을 파악하여 발생할 수 있는 사고를 예방하고 대처하는 안전관리가 필요하다. 우리나라는 1990년대 이후 중대산업사고 예방을 위해 유해 위험방지계획서 시행, 공정 안전관리 제도 시행 등 여러모로 노력해 오고 있으나 최근의 일련의 중대 산업사고는 그 한계를 보여주고 있다. 그래서 본 연구는 PSM 취급사업장의 안전관리 개선을 위한 대책을제시하게 되었고 PSM 취급사업장의 안전관리 개선을 위해 철저한 안전 수칙 준수를 통해 중대 재해 발생을 방지하는 안전관리 개선에 대한 방안을 도출하였다.

• Economic and Environmental Geology
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• v.41 no.5
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• pp.475-484
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• 2008

In this study, we analyzed national mining investment security and country risk, and suggested a new index for exploration and development investment for mining projects in abroad by an analysis of relationship between these grades and mineral resource development investment. For this, potential risks for mining in mineral-rich countries are assessed, and the risk of the exploration and development investment for mining projects is relatively evaluated by OECD country risk. It is noted that countries of the lower ranks in OECD are consistently good agreement with the high grade in Behre Dolbear Group Inc. for favorable mineral exploitation, whereas the higher ranks have shown diverse and high risks for the mining investigation and development. Consequently, it is necessary that assessment of the relationship between mineral resource index and country risk for mining projects to be investigated and developed in future should be applied before business decision of mineral investigation projects in abroad.

• Korean Journal of Construction Engineering and Management
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• v.19 no.5
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• pp.81-89
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• 2018

The purpose of this study is to assess the risk and predict the contingency for modular plant construction projects. Considering the work characteristics of the modular plant, The adapted research method is that suggest models for assessment impact of risk and predict the contingency considering risk. Based on the proposed models, It is selected one modular plant construction project and assessment impact of risk factors and predicted the contingency. The results of this study are as follows: Assessment the probability of occurrence of risk factors and intensity of impact, and extract 15 important risk factors. These are classified as Engineering, Procurement, Fabrication, Transportation, Construction phases to consider the work characteristics of the modular plant. The predicted contingency is that 6.739%(Engineering 2.850%, Procurement 6.225%, Fabrication 6.211%, Transportation 4.165%, Construction 8.168%) to prepare the basic business expense. The model is used as a way to derive quantitative results in the decision-making process for risk management in construction projects.

• Journal of Korean Society of Transportation
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• v.29 no.6
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• pp.25-37
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• 2011

This research aimed to investigate whether commercial drivers' situation awareness ability is related to their frequency and magnitude of caused accidents and penalty points. For the purpose of measuring drivers' situation perception and interpretation capacities, two tests named 'situation awareness test' and 'hazard perception test' were developed. The tests were based on the data from 299 commercial drivers (test drivers) using a driving simulator. The outcome of drivers' performance on situation awareness and hazard perception tests was designed to be categorized into 5 grades, classifying the best as grade 1 and the worst as grade 5. As the result, low grades on situation awareness test had positive relationship with accumulated penalty points, frequency of accidents and safety index. Grades on hazard perception test were also positively correlated with accident frequency and safety indices. This suggests situation awareness ability of commercial drivers is significantly related to traffic violations and accident causing tendencies.

• Transportation Technology and Policy
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• v.4 no.3
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• pp.209-214
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• 2007

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.17-17
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• 2018

재난발생 위험은 불확실성을 내포하고 있으며, 이러한 불확실성 요인을 줄이고 사전에 소멸시키는 일은 매우 중요한 사항이 될 수 있다. 또한 재난관리 관점에서 그것이 발생했을 때 어떤 식으로 대응할지에 대한 과정이 체계적으로 갖추어져 있어야 하며, 복구 및 재발 방지를 위한 지속적인 노력이 수반될 필요성이 있다. 본 연구에서는 기후정보를 활용한 중장기 수문예측을 실시하고 통합홍수위험평가 시스템 구축을 통한 홍수위험도 분석을 실시하였다. 이를 위하여 우리나라 243개 지자체를 대상으로 홍수관련 위해성, 노출성, 취약성 자료를 수집하여 표준화하였으며, 전문가 Delphi-AHP 설문조사 분석을 통하여 가중치를 적용하고 위험도를 예측 평가하였다. 이러한 중장기 위험 예측 정보는 한 달 또는 수개월 전에 지자체 행정력을 집중 및 분산시키고, 수재해(홍수/가뭄 등) 위험관리 계획 수립이 가능하여 재난관리자에게 유용한 정보로 활용될 수 있을 것이다. 또한 재난의 생애주기(Life Cycle)별 예방, 대비, 대응, 복구 단계에 따라 사전과 사후에 가능한 주요 활동들을 구체화 할 수 있으며, 시간 스케일별 기후예측 정보를 활용한 재난관리 패러다임 전환과 골든타임 확보 등 수자원예측 분야 기술적 진보를 이룰 수 있을 것으로 기대한다. 향후 통계 역학 모형 기반 중 장기 예측 정보의 신뢰도가 향상 된다면 보다 다양한 분야 예측 정보 서비스 및 활용이 가능할 것이다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.54-59
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• 2007

Recently, Apartment Reconstruction Projects are performing only with the basis of profitability without establishing either certain criteria or standard guideline. In addition, the profitability information contained in a disposal plan tends to be considered as a fixed value, and it is frequently changeable because reconstruction projects have such a long time to complete and many participants with respective interests. As mentioned above, the new approach needs to be developed which covers the limitation of the unvaried one. Consequently, this study focuses on the probability approach considering not only variances that affect the profit, but the relationship between profit and risk, and then is modeling. This study is anticipated to improve the reliability and accuracy of expected value as well as apply to the decision making criteria quantitively about potentially hidden risks in that projects.

• Korean Journal of Construction Engineering and Management
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• v.11 no.3
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• pp.134-144
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• 2010

In China, the enhancement of water services has become the most crucial issue confronted with the rapid urbanization and industrialization process. A huge financial gap to meet the demand for water infrastructure and need for adopting advanced operation technology precipitated the rapid growth of PPP over the last 10 years. Diverse schemes of PPP such as TOT, Divestiture, and Management Contract and Lease have been practiced. Local governments and private investors/operator have adjusted their objectives and strategies to avoid potential pitfalls behind BOT projects in China. However, current academic research outcomes do not properly reflect important issues of BOT projects or related case studies in China. This limitation has brought in the lack of assessment of important risks and success factors required for the improvement of the body of risk management. In this regard, this study uses the market analysis method to identify major schemes of PPP water projects and conducts case studies on five PPP projects to identify key risk and success factors in association with each different scheme. It is expected that the risk and success factors identified from the cases will be used as reference to Korean companies which plan to enter the Chinese water market.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.338-338
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• 2017

하천기본계획, 생태하천 복원사업, 또는 하천재해예방 사업 등에 의해 수행되는 하천정비사업은 홍수재해예방, 생태하천 복구 등 여러 목적에 의해 시행되고 있다. 특히 최근 이루어지는 하천정비사업은 공원, 캠핑장, 주차장 등 시민들에게 다양한 편의시설을 제공하기 위한 친수공간으로 조성되고 있다. 이러한 하천구역 내의 친수공간 조성은 홍수주의보 및 홍수경보에 대응하는 유량에 비해 상대적으로 적은 유량에도 침수피해가 발생함으로써 중소규모의 유량에 대한 홍수위험도도 함께 증가시켰다. 친수공간 및 교량하부도로 등 저수위에 대한 홍수취약구간의 홍수정보를 취득하기 위해서는 해당 위험지점의 수위관측을 통해 위험상황을 실시간으로 모니터링 하는 것이 홍수피해에 대비하고 대응하기 위한 가장 확실한 방법이다. 하지만, 예산과 인력 등의 문제로 인해 모든 지점에 대해 수위관측을 실시하여 홍수예보시스템에 의해 홍수예측정보를 제공하기에는 현실적으로 한계가 있다. 따라서 친수공간에서의 홍수피해를 최소화하기 위해, 각 친수공간의 지형정보가 인근의 홍수예보지점 또는 수위관측소 지점과 어떠한 연관성을 갖는지 분석할 필요가 있다. 본 연구에서는 1차원 수리해석 모형을 통해 원거리에 위치한 수위관측 및 홍수정보를 이용하여 하천구역내 위치한 친수공간에 대한 침수위험도를 분석하기 위한 방법론을 제시하고자 하였다. 즉, 원거리에 위치한 수위관측소의 수위 및 유량 정보를 활용하여 수위관측이 이루어지 않는 지점의 침수정보를 예측하기 위한 방법론을 제시하고자 한다. 낙동강 하류부에 대해 제시한 방법론에 의해 목표로 하는 친수공간에 대한 유량별 수위에 대한 침수도표를 작성하였다. 본 방법론과 이에 의해 작성된 친수공간의 침수도표는 취약구간에 대한 각 수위별 침수정보를 제공하기 위한 기초자료로 활용될 수 있을 것으로 판단된다.

• Journal of Korean Society of Transportation
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• v.23 no.3 s.81
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• pp.95-108
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• 2005

The purpose of this study is to develop the ITS evaluation model using the Probabilistic Risk Analysis (PRA) methodology and to demonstrate the goodness-of-fit of the large ITS projects through the comparative analysis between DEA and PRA model. The results of this study are summarized below. First, the evaluation mode] using PRA with Monte-Carlo Simulation(MCS) and Latin-Hypercube Sampling(LHS) is developed and applied to one of ITS projects initiated by local government. The risk factors are categorized with cost, benefit and social-economic factors. Then, PDF(Probability Density Function) parameters of these factors are estimated. The log-normal distribution, beta distribution and triangular distribution are well fitted with the market and delivered price. The triangular and uniform distributions are valid in benefit data from the simulation analysis based on the several deployment scenarios. Second, the decision making rules for the risk analysis of projects for cost and economic feasibility study are suggested. The developed PRA model is applied for the Daejeon metropolitan ITS model deployment project to validate the model. The results of cost analysis shows that Deterministic Project Cost(DPC), Deterministic Total Project Cost(DTPC) is the biased percentile values of CDF produced by PRA model and this project need Contingency Budget(CB) because these values are turned out to be less than Target Value(TV;85% value), Also, this project has high risk of DTPC and DPC because the coefficient of variation(C.V) of DTPC and DPC are 4 and 15 which are less than that of DTPC(19-28) and DPC(22-107) in construction and transportation projects. The results of economic analysis shows that total system and subsystem of this project is in type II, which means the project is economically feasible with high risk. Third, the goodness-of-fit of PRA model is verified by comparing the differences of the results between PRA and DEA model. The difference of evaluation indices is up to 68% in maximum. Because of this, the deployment priority of ITS subsystems are changed in each mode1. In results. ITS evaluation model using PRA considering the project risk with the probability distribution is superior to DEA. It makes proper decision making and the risk factors estimated by PRA model can be controlled by risk management program suggested in this paper. Further research not only to build the database of deployment data but also to develop the methodologies estimating the ITS effects with PRA model is needed to broaden the usage of PRA model for the evaluation of ITS projects.