• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.1D
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• pp.133-140
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• 2006

This paper suggests to reclassify railroad accident types and to standardize them as the standardized code for the railroad safety management system. The existing railroad accident types in both domestic and foreign cases have been carefully analyzed in the beginning. Based on the case studies, the new railroad accident types are classified into 9 classes which are not overlapped one another and 9 classes have been subdivided into 40 different accident patterns. All these patterns are linked with 9 different accident objects and 6 accident locations. Therefore, this study suggested the combination of 4 distinct code factors: accident class, accident pattern, accident object, and accident location to standardize them. In addition, inter-operation between the proposed codes and the existing accident types is suggested. This code will play a major role in the railroad safety management system composed of accident prevention, accident preparedness, accident response, and accident recovery.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.5
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• pp.1173-1177
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• 2015

The paper suggests to reclassify the casuality accidents types and causes at urban rail stations in the standardized code manner. In order to make standardized codes, 4,086 casuality accidents for Seoul Metro and Seoul Metropolitan Rapid Transit Cooperation (SMRT) are analysed. The standardized code for casuality accident types includes 4 distinct factors; casuality object, casuality location and casuality pattern. Also, the standardized code for casuality accident causes includes 4 distinct factors: casuality trigger, drinking or not, first cause and second cause. This code is deemed to play a big role to link the same casuality accident types or causes which can be used in the process of railroad safety management and emergency response system.

• Journal of the Korean Society for Railway
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• v.12 no.5
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• pp.819-828
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• 2009

This paper suggests to standardize railway accident restoration types as the code and standard operation system for efficient railway accident management. First of all, the damage types of have been carefully analyzed and reclassified. This study suggested the combination of 3 distinct code factors: restoration class, restoration object, and restoration location to standardize them. In addition, this study suggested procedures to make the standard operation system of emergency restoration, defined the worst case of emergency restoration and the important events. Therefore, the standard operation system of emergency restoration is developed. It shall play a major role as the database system for railway accident management, minimum of damage and rapid control of accident.

• Proceedings of the Safety Management and Science Conference
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• 2012.04a
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• pp.435-446
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• 2012

생활을 향상시키고 개선하기 위해 화학물질은 전 세계적으로 널리 이용 되고 있고, 또한 국내에는 38,000여종의 화학물질이 유통되고 있다. 그러나 화학물질은 그 이점에도 불구하고 사람이나 환경에 유해 영향을 가져올 가능성이 있어 위험물안전관리법에서는 3,000여종을 위험물로 분류하여 규제하고 있다. 위험물에 관련하여 유해화학물질관리법, 위험물안전관리법, 고압가스안전관리법, 총포 도검 화약류단속법, 원자력 진흥법, 농약관리법 등에서 개별적으로 규정하고 분류하고 있어 위험물질에 대한 표지사항이 해당 부처에 따라 상이하여 혼란을 야기하고 있고, 위험물에 대한 품목 및 품명의 고정으로 인하여 새롭게 생성된 위험물질에 대해 적용하는 데 문제점이 있다. 이에 의해 위험물질을 개별법에 따라 관리함으로써 중복된 위험물질 분류 및 관리의 문제가 있으며, 위험물질 분류에 있어서 위험물질에 따라 수송수단이 상이함에도 불구하고 수송수단별(도로, 철도, 해운, 항공) 위험물질에 대한 세분화된 자료가 부족하다. 따라서 수송관점에서 표준화된 위험물 물질정보의 분류와 코드화 방안개발이 필요하다. 본 연구는 국내 외 문헌 검토 및 위험물에 관련된 법제도 비교를 통하여 위험물 수송관리체계 정비방안과 위험물 수송사고의 문제점을 도출하고 기존의 위험물 분류체계에서 운송관점에서의 위험물 매칭테이블을 구축하고 신속한 사고대응을 위한 위험물질별 코드화 방안을 제안하도록 하겠다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.4
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• pp.398-407
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• 2018

Standard guidelines for marine accident investigation have been prepared through the enforcement of the Casualty Investigation code as of January 2010. In addition, as the International Maritime Organization (IMO) recommended contracting the state to manage a marine incident system established under this code, Korea also has newly established provisions for a marine incident system in the 'Act on the Investigation of and Inquiry into Marine Accidents' also as of 2010. The Korean Maritime Safety Tribunal (KMST) has made a multilateral effort to prevent marine accidents through the efficient operation of a marine incident system, but this system has not been properly activated. This study examines the operational status and problems of a marine incident system and analyzes the marine incident systems of foreign countries and similar transportation agencies such as railroads and aviation. Options include switching to voluntary reporting of marine incidents, transferring responsibility to a non judicial private organization, expanding incentive systems for a marine incidents, revising regulation and preparing detailed implementation guidelines.

• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.1
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• pp.39-46
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• 2020

Accident prevention is more important than follow-up, which is based on Heinrich's law. The marine incident system is a very meaningful system that can prevent similar accidents, and was introduced in 2010 in Korea in accordance with the enforcement of the Code for the Investigation of Marine Casualties and Incidents (CI Code). Based on the CI Code, ship owners or ship operators are required to notify the Central Chief Inspector using the designated notification form in the event of a marine incident, but the number of voluntary notifications is still small. In this regard, this study intends to provide a direction for improvement by conducting an in-depth analysis focusing on the lack of notification procedures and forms of the marine incident system. To this end, we analyzed related regulations, cases of excellent overseas shipping countries such as the United Kingdom and Singapore, cases of similar domestic transportation systems such as aviation and railways, and marine incident notification procedures and forms of leading shipping companies. Major improvements in the notification process include the transition of the marine incidents to voluntary reporting, the expansion of the reporting subjects, and the identification of the security of the informer's identity. The main contents of the notification form revision include the use of the term "reporting" instead of "notification," the content of the identity guarantee in the notification form, and the increase in statistical value through the expansion of optional entries.

• Journal of the Korean Society for Railway
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• v.11 no.3
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• pp.294-299
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• 2008

The present study investigates the ventilation effects on smoke spreading with the rescue stations. Experiments for tunnel fires were carried out for n-heptane pool em at different fire locations, and the heat release rates (HRR) were obtained by addition, using the commercial code (FLUENT), the present article presents numerical results for smoke behavior in railway tunnels with rescue station, and it uses the MVHS (Modified Volumetric Heat Source) model for estimation of combustion products resulting from the fire source determined from the HRR measurement. As a result, it is found that smoke propagation is prevented successfully by the fire doors located inside the cross-passages and especially, the smoke behavior in the accident tunnel can be controlled through the ventilation system because of substantial change in smoke flow direction in the cross-passages.

• Journal of the Korean Society for Railway
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• v.12 no.1
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• pp.25-30
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• 2009

The present study deals with numerical investigation for smoke behavior in rescue station by using the commercial CFD code (FLUENT Ver 6.3). With the use of the MVHS(Modify Volumetric Heat Source) model modified from the original VHS(Volumetric Heat Source) model, a 10 MW mode was adopted for simulation and the MVHS model can describe the generation of product and the oxygen consumption at the stoichiometric state. In addition, the present simulation includes the species conservation equations for the materialization of heat source and the estimation of smoke movement. From the results, the smoke flows are moving along the ceiling because of thermal buoyancy force and as time goes, the smoke gradually moves downward at the vicinity of the entrance. Moreover, without using ventilation, it is found that the smoke flows no longer spread across the cross-passages because the pressure in the non-accident tunnel is higher than that in the accident tunnel.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.2223-2231
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• 2010

Recently, an important physical device of transportation, such as car, railroad, ship and aircraft has changed into electronic control unit. According to accident reports, the most of car accidents are caused by faults of embedded software loaded to computer control unit. The facts implies that the test to find defects in embedded software haven't performed sufficiently. As a result, it is necessary to establish the test procedures of embedded software based on safety assessment criteria. The objective of this proposal is to provide a unit test procedure complied with the safety assessment criteria for the embedded software. In addition, an effective unit testing procedure and defect analysis methods are proposed and a testing procedure using a safety criteria built-in tool is presented.