• Title/Summary/Keyword: 철도안전

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Study on Flow Lubrication Selection of Driving Gear Unit for EMU (전동차용 DRIVING GEAR UNIT의 윤활유량 선정에 관한 연구)

  • Kim, Kyung-Han;Lee, Tae-Hun;Kim, Hak-Soo;Seo, Young-Jin;Ko, Hyung-Keun
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.132-137
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    • 2011

  • Many studies are being conducted to improve high speed, light weight and safety of passenger. To improve safety of rolling stock, safety of running performance is most important, and optimizing flow lubrication in driving gear is essential. This study simulates lubricant flow change in driving gear casing which is splashed by the surface of low speed gear teeth following rotational direction of driving gear unit for EMU by using CFD analysis, and based on analysis detail, non-load actual test is conducted for similar driving condition to find out suitability of analysis, selection of lubricate and stability of driving gear.

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The Study on the Regulation of Classification of Hazardous Materials for the Safety of Rail Transportation (철도위험물 수송 안전을 위한 위험물 분류 기준 연구)

  • Kwon, Kyung-Ok
    • Journal of the Korean Institute of Gas
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    • v.13 no.3
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    • pp.7-14
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    • 2009

  • Many countries are managing the transportation of hazardous materials under the specific provisions especially, as well as use, storage and management, because of their high risks. For the purpose of the revision of rail safety law for the safe transportation of hazardous materials, amount and kind of hazardous materials transported by rail in Korea are analysed and the standards of classification of hazardous materials are compared in domestic and abroad. There are lots of benefits for national rail safety law to implement an international law because our country's geographic location is convenient to connect the continent and to across the border. It is suggested that implementing a classification and test methods of hazardous materials enable to use internationally for the preparation of rail transportation to be increased.

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Workflow Procedures and Applications in BIM-based Design for Safety (DfS) (BIM 기반 설계안전성검토의 업무 절차와 활용 방안에 관한 연구)

  • Jaewoong Hwang;Heetaek Yoon;Junhyun Bae;Youngkon Park
    • Land and Housing Review
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    • v.15 no.2
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    • pp.125-137
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    • 2024

  • A conventional Design for Safety (DfS), introduced to eliminate potential hazards in the design phase proactively, has encountered persistent challenges, such as perfunctory risk assessments and hazard identifications based on 2D drawings and inefficient workflow processes. This study proposes a BIM-based approach to Design for Safety (DfS) to address the limitations of conventional methods, aiming to enhance efficiency and achieve practical safety management benefits. The proposed workflow process for BIM-based DfS has been refined and validated for on-site applicability through various case studies, including risk assessments during the design phase and field applications for safety management activities during the construction phase. Specifically, the critical process of risk assessment within the DfS methodology has also been transitioned to a BIM-based approach. This BIM-based risk assessment process has been evaluated through case studies, encompassing safety reviews for structural design, construction equipment operation, and construction methodology with sequence in design projects. Additionally, the proposed BIM-based DfS has demonstrated exceptional on-site applicability and efficiency, as validated by the application of a BIM deliverable embedded in DfS information for CDE-based daily activity briefing, VR-based safety training, AR-based mitigation measures inspections, and other safety management activities in the construction phase.

  • https://doi.org/10.5804/LHR.2024.15.2.125 인용 PDF