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도시철도용 CBTC시스템 개발을 위한 RAMS관리계획 수립에 대한 연구
신덕호(Ducko Shin),김건엽(Gonyop Kim),오세찬(Sehchan Oh),윤용기(Yong-Ki Yoon) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Ministry of Land Transportation and Maritime Affairs of Korea has started a research project on verification process and safety assessment of Communication Based Train Control (CBTC) system for metropolitan railroad control as a 3-year project starting from 2010. As a number of companies has made efforts in securing the technologies for domestic production of CBTC systems the purpose of the project is to develop the specification for interoperability with the considerations for local environments including metropolitan train operations and wireless communications. And the developed systems and the RAMS related outcomes from the participating companies are subject to Independent Safety Assessment (ISA) performed by a foreign specialized agency and the corresponding certificates are to be issued as a part of the project. In this paper the RAMS management for verification and commercialization of metropolitan railroad CBTC systems has been studied. The study includes response strategy for the requirements of international standards responsibility and authority of the related institute and the companies quantitative RAMS objectives and risk management strategies in project fulfillment.
신덕호(Ducko Shin),김건엽(Gonyop Kim),오세찬(Sehchan Oh),윤용기(Yong-Ki Yoon) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
System safety is defined as the state where the hazard risks due to internal system interface operation and maintenance are controlled as acceptable levels. It is represented and evaluated either with the risk level of each risk factor with the consideration of operation environments or with Safety Integrity Level (SIL) which is the system functional safety without considering application environments. The assessment results are issued in forms of certificates and they are reused in many cases. However the conditions and restrictions for different application environments vary in each case therefore additional evaluation on the preconditions of assessment in comparison with the actual application environment must be carried out. For the area of train control TR 50506-1 has been established based on the IEC 62425 (international standard for safety of train control system by RSSB) and EN 50129 (Europe standard) for the further assessment. In this paper the analysis on TR 5056-1 has been conducted in depth. The purpose of the study is to determine the requirements for inter-acceptability including scope procedures principles examination and suitability. The results can be utilized for the system safety maintenance when new devices or components are introduced in conventional systems.
신덕호(Ducko Shin),신경호(Kyung-Ho Shin),이강미(Kang-Mi Lee),이재호(Jae-Ho LEE) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
In this paper we present the specification development for the localization of interlockings which control routes within a HSR station yard. For the electronic interlockings in Korea introduced from France in the 1990s, it has a complicated hardware configuration and communication protocols in order to secure safety. Now 30 years later, in case of the application of the up-to-date IT technology, it is expected to achieve equal or greater safety and save maintenance costs. Additionally, we develop the specification so as to utilize the stable domestic electronic interlocking technology for general railways, beyond the simple maintenance for the performance maintenance of foreign devices, to high-speed railways. Therefore, we perform a study for the localization of the HSR electronic interlockings by comparing and analyzing interlocking logic units between conventional HSR and general railways.