• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.2
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• pp.33-43
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• 2022

The number of car crashes increases along with the increasing number of vehicles. Hence, diverse initiatives on traffic accidents have been implemented, targeting zero crash fatalities. According to the 3rd Traffic Safety Master Plan of 2016, the current standard selecting road accident black spots prioritizes locations with the high cumulative death toll. While this standard is suitable for roads that a city government manages to some extent, it is not suitable for roads less than 20 meters that a borough (Gu) handles. The roads under the supervision of a borough do not have enough death toll, and thus improvements on its road accident black spots are highly limited. In addition, discovering the causes of traffic accidents is not easy when the number of car accidents is obtained by considering only fatal accidents, which are relatively low in number. Therefore, including all traffic accidents might identify causes of accidents and result in better advancements. Therefore, this research follows rational decision-making and suggests new National Traffic Safety Master Plan standards. These new standards are obtained by comparing accident costs between the location of fatal crashes and road accident black spots. The analysis result shows that considering all types of accidents yields better results. For example, a Three-way Intersection in front of Zion Day Care Center, one of the selected spots under the current standard, has lower road crash costs than Sinchon Intersection, a selected spot under a new standard. Therefore, the study concludes that the standards to select road accident black spots need to include traffic accident severity and road crash costs.

• Journal of the Korean Institute of Gas
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• v.13 no.3
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• pp.22-27
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• 2009

Recently Urban Gas Business Companies have been allowed to construct High Pressure Natural Gas pipelines, if they adopt the Risk Reduction Measures(RRMs) recommended by Korea Gas Safety Corporation(KGS) after safety assessment. This paper presents a Cost Benefit Analysis(CBA) method, when KGS performs safety assessment and recommends RRMs to Safety Appraisal Committee, to help the Committee make judgements on whether the proposed RRMs are reasonably practicable. We carried out quantitative risk assessment to high pressure natural gas pipelines as a case study and analysed cost benefit for the suggested RRMs. In conclusion, we found out the presented CBA method using PF was proper in Korea.

• Journal of Korean Society of Transportation
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• v.35 no.1
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• pp.25-36
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• 2017

The purpose of this study is to analyze traffic accident reduction effect of the introduction of motorcycle safety inspection. To analyze the effect of motorcycle inspection, we first estimate the number of defective motorcycles, and calculate the probability of accident occurrences caused by the defect using four year traffic accident data. Finally, we estimate the number of reduced accidents due to the introduction of the inspection and the total reduced accident cost. In this study, we analyzed three scenarios. It is analyzed that when the safety inspection system is applied to all motorcycles, 642 cases of traffic accidents and 325 million won per year of traffic accident costs are reduced. It is approximately 0.1% of 2014 total traffic accident cost of 26.5725 trillion won per year. It suggests that the cost of traffic accidents and traffic accidents due to vehicle factors are reduced when the safety inspection system is introduced.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.241-242
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• 2023

등부표는 선박의 안전한 항행을 지원하는 시설인 항로표지의 한 종류로 항행하는 선박에게 암초나 수심이 얕은 곳의 소재를 알리거나 항로의 경계를 알리기 위해 침추를 해저에 정치하여 해상의 고정위치에 띄워 놓은 등화가 설치된 것을 말한다. 등부표의 표체는 해저에 정치된 침추와 체인으로 연결하며 체인의 길이는 수심의 1.5 ~2.5배로 하여 표체를 계류한다. 등부표는 조류, 바람 등 외력에 의해 이출거리가 발생하여 일정한 패턴으로 선회반경이 형성되나 외력으로 인하여 정상범위에서 벗어나 유실, 위치이동 등이 발생할 수 있고 이는 선박추돌 등 항해안전 사고로도 이어질 수 있다. 이러한 등부표 사고는 물적 피해비용과 이용자의 안전운항에 대한 심리적 부담감 또는 위험감수 등의 추가적인 행정소요 비용이 발생할 수 있다. 따라서 선박의 안전한 도선을 위해서는 등부표의 이출범위와 위치가 변할 수 있음을 염두해 둘 필요가 있다. 이와같은 등부표로 인한 사고 예방과 안전한 도선을 위해 등부표 이출범위와 안전도선에 관한 연구를 하였다.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.22 no.3
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• pp.191-201
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• 2010

The breakwaters are designed by considering the cost optimization because a human risk is seldom considered. Most breakwaters, however, were constructed without considering the cost optimization. In this study, the optimum return period, target failure probability and the partial safety factors were evaluated by applying the cost optimization to the rubble mound breakwaters in Korea. The applied method was developed by Hans F. Burcharth and John D. Sorensen in relation to the PIANC Working Group 47. The optimum return period was determined as 50 years in many cases and was found as 100 years in the case of high real interest rate. Target failure probability was suggested by using the probabilities of failure corresponding to the optimum return period and those of reliability analysis of existing structures. The final target failure probability is about 60% for the initial limit state of the national design standard and then the overall safety factor is calculated as 1.09. It is required that the nominal diameter and weight of armor are respectively 9% and 30% larger than those of the existing design method. Moreover, partial safety factors considering the cost optimization were compared with those calculated by Level 2 analysis and a fairly good agreement was found between the two methods especially the failure probability less than 40%.

• Journal of the Korean Institute of Gas
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• v.7 no.4 s.21
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• pp.61-66
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• 2003

The objective of this study is to develop a Cost-Benefit analysis system which would help us to make optimal decision among safety investment alternatives, calculating and comparing costs and benefits for facilities in chemical plants. So, the accident frequency analysis module and the accident damage prediction module were developed for estimating quantitative risks in chemical facilities, and domestic societal risk criterion was presented after the comparative analysis of major industrial cases and societal risk criteria of advanced countries like the Netherlands, Australia, U.S.A., U.K., and Germany. Also, the Cost-Benefit Analysis System which compares the safety investment alternatives based on their deduced net present values was developed through the selection of proper cost and benefit items by field studies

• Proceedings of the Safety Management and Science Conference
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• 2001.11a
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• pp.175-179
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• 2001

• Proceedings of the Safety Management and Science Conference
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• 2011.11a
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• pp.47-53
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• 2011

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2012.10a
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• pp.309-310
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• 2012

• Proceedings of the Safety Management and Science Conference
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• 2012.11a
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• pp.515-525
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• 2012