• Proceedings of the KSR Conference
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• 2004.10a
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• pp.246-249
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• 2004

According to ' Monthly report of train accidents and incidents ' of KNR, 95 numbers of rolling stock fire accidents/incidents had happened during last five years(from 1999 to 2003). Among them, there have happened only one injured accident which happened at Whamyung station in 1999. But it is necessary to consider a countermeasure for fire accidents/incidents, because they have big risk which might produce a large scale damage and lots of injured persons as the Taegu subway fire accident last year. This paper analyzes the rolling stock fire accidents/incidents which have happened during last five years in KNR, and suggests their countermeasures.

• Proceedings of the KSR Conference
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• 2004.10a
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• pp.277-282
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• 2004

According to ' Monthly report of train accidents and incidents ' of KNR 184 numbers of derailment accidents/incidents had happened during last five years(from 1999 to 2003). Among them, there have happened only four injured accidents such as West Daejeon derailment accident, Jungang line, Pyegje station, and Daejeon station one. But it is necessary to consider a countermeasure for derailment, as its accident/incident have big risk which might produce a large scale damage and lots of injured persons. This paper analyzes the derailment accidents/incidents which have happened for last five years in KNR, and suggests their countermeasures.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.997-1004
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• 2005

Representative of Korean accidents is that occurrence number of accidents is not many. But the extra-large size disaster like as Taegu subway accident are occurred continuously from multi place. It brings a big problem that people has spirit shock and a life damage nationally and socially. The problem point which brings like this tragic death is caused from the fire confrontation system of absent and human confrontation mistake. Therefore, we need the confrontation plan to overcome these accidents. It will be able to prepare favorably in accident confrontation. In this paper, we analyzed fire accidents case study on domestic and oversea and proposed the plan which confronts encounter to fire accidents in subway system urgently and properly.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.328-335
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• 2006

This study aims to find the cause of temporary work accidents and suggests a improvement plan for the prevention of accidents in temporary works. For this purpose the following research methods were used: statistical analysis of construction accidents, questionnaire survey, and a case study. As conclusions, causes of temporary work accidents were showed and a improvement plan for the prevention of the accidents in temporary works was suggested for the 2 groups: (1) temporary material manufactures, lease and sales companies, (2) construction companies which use those temporary materials.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.2
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• pp.42-53
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• 2006

In Korea, the railway history has more than 100 years and the KTX(Korean Express Railway) was launched on April 1, 2004. Nevertheless, the safety management of the railway has not been emphasized. Thus this paper proposed the novel frame of the railway safety management system which can secure the railway safety and administer the railway accidents via Management Systems from domestic to international. Secondly, we developed the prototype Management System for the railway accident based on GIS(Geographic Information System) by introducing the concept of "location". This Management System has two parts: space and attribute. Also it provides the map for emergency actions.

• Journal of the Ergonomics Society of Korea
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• v.22 no.1
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• pp.81-94
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• 2003

The British railway safety research group has developed a risk assessment model for the railway infrastructure and major railway accidents. The major hazardous factors of the railway infrastructure were identified and classified in the model. The frequency rates of critical top events were predicted by the fault tree analysis method using failure data of the railway system components and ratings of railway maintenance experts, The consequences of critical top events were predicted by the event tree analysis method. They classified the Joss of accident due to railway system into personal. commercial and environmental damages. They also classified 110 hazardous event due to railway system into three categories. train accident. movement accident and non-movement accident. The risk assessment model of the British railway system has been designed to take full account of both the high frequency low consequence type events (events occurring routinely for which there is significant quantity of recorded data) and the low frequency high consequence events (events occurring rarely for which there is little recorded data). The results for each hazardous event were presented in terms of the frequency of occurrence (number of events/year) and the risk (number of equivalent fatalities per year).

• Journal of the Korea Safety Management & Science
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• v.15 no.4
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• pp.73-80
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• 2013

Because the damages of corrosion resulting from the chloride ion are very serious, many research studies have been performed to measure the penetration depth of the chloride ion. However, there is a problem with data selection obtained from collection during experiments. In this study, it appears that the collected data are not conformed to a normal distribution. The result of this study will play a very important role, as a first step for the development and construction of a forecasting system to help determine a reliable service lifetime of marine structures.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.90-96
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• 2005

The existing safety-management manual is confined to list data based on regulations, and only provide ways to prevent accidents/incidents for particular work which accidents occur frequently. As it is difficult to understand the complete process involved the work, we can not expect the manual to function as a guide to prevent unfortunate events. When establishing WBS(work breakdown structure) of railway line engineering, consideration of the characteristics of train operation will enable many benefits. Therefore in this research it is conducted to materialize it in the manual. Main contents in this research are to review the way that change complete work performance process and person in charge of different tasks into WBS(work breakdown structure), and trough the newly developed WBS , the ways to improve roles and functions of the manual which Korean Railroad made are recommended.

• Journal of the Korean Society for Railway
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• v.5 no.4
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• pp.215-221
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• 2002

In the standard specifications for the urban EMU (Electric Multiple Unit) train, there are several items to ensure safety against accidents. The 21st to the 23rd items have much to do with the crashworthiness of the urban EMU train. In this study, a rubber-tired Automated Guide-way Transit (AGT) System under development by KRRI is numerically evaluated from the point of view of crashworthiness by applying the above crashworthiness items. The numerical results show that the design of the AGT satisfies the 22nd and 23rd items. But a design modification to adopt mechanical fuses is recommended to reduce impact accelerations with respect to the 21st item.

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.55 no.12
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• pp.667-673
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• 2006

Programmable electronic interlocking system plays key role in railway operation and is closely related to railway accidents, in which the programmable electronic controller of interlocking system may become sources. Redundant digital controllers are adopted as the interlocking controllers to prevent the accidents from the controllers being out of order. The redundant digital controllers being fault tolerant are realized through dual or triplex controllers. In this paper, we calculated safety and availability of the redundant digital controllers using Markov models, demonstrated key part to determine the availability ana the safety.