• Proceedings of the KSR Conference
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• 2002.10b
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• pp.913-921
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• 2002

Recently, fundamental innovation for the improvement of Korean railway industry is proceeding with the vertical separation into infrastructure and operation, and the privatization of railway operation. And also, with the advent of an era of high-speed railway, starting of Korea Train Express (KTX) will give a great change to circumstances of railway industry. It requires that a railway safety regulation policy and accident survey system cope effectively with this restructuring of railway system. Under these great changes, safety must have the first priority, and the function of management and supervision on railway safety will be ten to the governments responsibility; In this paper, according to changes of railway safety management system, foreign states railway accident system and direction of korea railroad accident survey system will be also introduced.

• Proceedings of the KSR Conference
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• 2003.05a
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• pp.239-250
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• 2003

It explained the cause and a process of Taegu subway fire accident in this report. Will reach and to lead it analyzed the structure and actual proof problem which it follows in Urban construction and the operation of Korea. The Urban is operated efficiently to be respected, it demands a security division order to become fixed the culture which it uses, it intercepts the misfortune due to the human being the setup for with the destroyer it is possible. This report will become the place help which reappraises all systems against the construction and the operation of the Urban system.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.581-586
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• 2005

In this study, a hazard list is developed for accidents/incidents of Korean railway through identification of the risk sources. The risk sources are classified by the progress of the accidents/incidents, which consists of cause, triggering event, and failure of the safety system. The hazard list of railway accidents/incidents of Korea is then developed through extensive review of both domestic and foreign data for railway accidents/incidents risk sources. The list is refined for each of six subsystems of the railway system, which includes safety management system, operation management, human error and qualification management, installations and equipments, external hazard, and railway level crossing.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1126-1131
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• 2006

Risk assessment of a railway system should be periodically conducted managing a large amount of accumulating accident/incident data and scenarios, which generally requires enormous time and efforts. Therefore, special information management system is essential for railway risk assessment, where data needed for decisions on managing the railway safety could be promptly supported. The objective of this study is to develop a railway accident analysis program for risk assessment. The program is application running on the web which links railway accident analysts throughout the railway industry to a central database. Data entered, together with associated code tables. is stored on MS-SQL database. The program uses the concepts of accident, safety events, causes, related factors(vehicle, person, infrastructure, tool/equipment), recommendations to bring together the various elements of railway accidents. The program will be useful in finding hazard conditions, accident scenarios, quantitatively assessing the risk, and providing pertinent risk measures, eventually serving to prevent railway accidents and reduce severities of railway accidents.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1165-1171
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• 2006

The purpose of this study is to implement an emergency response procedure based on the scenario of the field of vehicles and provide more rapid and exact response program needed when train accidents happen. Therefore, we have made worst case combinations of accidents and prioritized the combinations. A number of accidents have been analyzed according to the type of, the people affected by, and the location of accident. Both horizontal and vertical response system have also been defined. Furthermore, Activity-Action Diagram has been applied to the emergency response scenario and action procedure of each group has been clearly systematized. Consequently, this paper provides a specific response system useful when train accidents happen.

• Journal of the Korean Society for Railway
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• v.11 no.1
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• pp.81-94
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• 2008

Recently, most of countries have been adopting the policies that aim to deal with the Problems of road congestion, environmental problems and the decreasing the volume of rall. A vital important subject is the reform of railways. Actually, the reform of railways has been carried out in various kind of ways, however the most epoch-making policy has been privatization of railways. Historically, Japan made the first step when it carried out regional privatization, unifying the infrastructure and operation. It created a 6 passenger enterprises and 1 freight enterprise. Meanwhile, in the case of the UK, discussion about rail privatization started the middle of 1980 and was implemented in 1994. It was implemented according to a functional division based on a separation of infrastructure and operation, creating a lot of different enterprises. With regard to the UK and Japan, there have been some debates about the methods of privatization, in particular, some scholars suggest that the rail accidents in the UK are a result of division of the infrastructure and operation. In addition to, some insist that the accident which occurred on 27th April 2005 at Hukujiyama in Japan was also attributable to the emphasis on profitable management. This paper examines the process and outcomes of rail privatization between the UK and Japan, especially focusing on different methods of privatization. This paper may provide some lessens for rail privatization policy. First, the rail privatization policy needs a enough time to complete the scheme. Second it is require to participate in the consumer, mass communication and rail of ncers who are involved the operation. Third, it is essential to have a huge investment, high technology and strong organization to drive.

• Journal of the Korean Society for Railway
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• v.15 no.4
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• pp.402-407
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• 2012

Since reports on trip delays or incidents often appear as accident articles on the press, the social criticisms and concerns on the safety of the urban railway are increasing. Therefore, a railway authority sometimes adopts an abstract safety goal like "let's build the urban railway to a masterpiece level" or "let's obtain an aeronautic safety level" to make citizens relieved and to alert involved persons. However with a vague goal, it is almost impossible to make an implementation plan systematic which helps the authority academically verify and validate if the goal is achieved or not. In this paper, the features of the railway safety are described and the safety models for securing the safety of the urban railway are surveyed and categorized. Based on the comparisons among the features and limitations of the models, we identify a more practical model which can be applied to the urban railway more effectively.

• Journal of the Korean Society for Railway
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• v.12 no.6
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• pp.996-1010
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• 2009

This paper proposed the framework for the Korean transport accounts which is suitable to Korean situation and can be used for international comparison. The framework is composed of the costs, the revenues and the estimation methodology. This framework is applied to both the Korean road and rail transport, respectively. The result showed that the total cost compared to GDP for the road was higher than the Europe's by 3.23% and that for the rail was lower than the Europe's by 0.67%. Also, the result showed that, in terms of the unit cost, the passenger cost per person-kilometer of road transport was 4.8 times higher than that of rail transport and the freight cost per ton-kilometer of road transport was 2.4 times higher than that of rail transport.

• Journal of the Korean Society for Railway
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• v.17 no.2
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• pp.100-105
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• 2014

To design a submerged floating railway that is safe against underwater explosions, railway behavior must be investigated and clarified. In this paper, shock waves and impulse pressures generated by a charge away from the submerged floating railway are expressed using experimental formulas. The submerged floating railway tethered by mooring lines is modeled as a simply supported beam with elastic springs. Finite element analysis for the beam model subjected to impulse loading is conducted so that the response of the submerged floating railway can be investigated. For design purposes, a simplified analysis method combined with dynamic load factor is proposed for the same model. Maximum deformation and internal forces are calculated and compared with the time dependent analysis results. It is shown that the simplified analysis results show good agreement.

• Journal of the Korean Society for Railway
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• v.20 no.4
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• pp.550-557
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• 2017

Owing to the established international standards for reliability and safety management of railways and the third-part conformity assessment implementation, quantitative risk assessment focusing on communication system related to railway safety has being implemented. The quantitative risk assessment starts from the establishment of quantitative RAMS requirements; the risk has to be maintained under an acceptable safety level. This paper introduces the risk assessment process based on international standards ; risk assessment was conducted using failure data for railway facilities for about 5.5 years. In addition, based on the results, a scientific risk management method for railway facilities is suggested.