• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2001년도 추계학술대회 논문집
• /
• pp.435-444
• /
• 2001

In the Korea, railroad accidents result in about 5.4 railroad run-off crashes every year and account for approximately 93 percent of all railroad accident frequency. Despite the number, quantification of the possible countermeasure has been limited and also railroad safety control after private management for railroad has not been established. Therefore, this study provides some initial insight into the important safety problem by introducing some example, including some detailed safety regulations in both British and U.S. to develop appropriate railroad safety management system.

• 대한안전경영과학회지
• /
• 제5권3호
• /
• pp.21-30
• /
• 2003

This study was intended to help workplaces set up an occupational health & safety management system by investigating the certification of the system and by conducting a questionnaire to survey the necessity, purpose, effect and promotion of the system. The occupational health & safety management systems generally adopted in Korea are OHSAS 18001 and K-OHSMS 18001, which are the PDCA model, such like the quality and environment management system. Because these standards have a compatibility with other management systems, individual or integral certification is available. A telephone questionnaire was conducted with 30 workplaces in Kyeonggi Province and Incheon Metropolitan City, which have been certified for the occupational health & safety management systems (OHSAS 18001, KOSHA 2000, and/or K -OHSMS 18001). About 92 percent of them were large-sized workplaces with over 500 employees. For the question on the necessity of the system, most of the respondent answered very necessary. The purposes of the certification were to control the risks in safety and health, to have a systematic approach for accident prevention and sustainable improvement, and to comply with a range of regulations voluntarily, in that order. Most of the answers to the question on the effect of the system were prevention of accident. For the question on the promotion of the system, the most prominent answer was reduction in the workers compensation rate.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2009년도 춘계학술대회 논문집
• /
• pp.855-859
• /
• 2009

In this paper, we introduce the estimation method by Risk or SIL(Safety Integrity Level) for the criterion of safety assurance and summarize each application method and target. IEC 62278(EN 50126) which is international standard for the specification and verification of the railway system RAMS indicate a criterion of safety assurance. Especially, it recommend the safety verification by continuous verification as the order of requirement establishment, design, manufacture, installation, operation, and maintenance for the equipment not easy to quantify the operation environment. In this paper, we study the SIL requirement allocation method relating to internal new system development and existing system improvement by analysing SIL recommendations which were used to understand SIL for a train control equipment in 1990s in IRSE and theoretically their allocation background. This paper help the safety management of Korea train control system to develope the quantitative management procedure as international level by analyzing the SIL requirement allocation by operation agency and the right SIL verification procedure by manufacture and indicating the example to assure safety because it is necessary for improvement and localization for the Korea train control system having highly dependence on aboard technology.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2008년도 추계학술대회 논문집
• /
• pp.1964-1969
• /
• 2008

A railway is a complex system integrated with a lot of technical elements such as rolling stock, power, signal control, communications, tracks, stations, operation control systems, and so on. As a mass transportation system, a railway could contain potential risks that may result in a high death rate and property losses. Accordingly, Railroad Safety Technology R&D Corps. is adopting the plan of the construction of Railway Safety Test Facilities as a part of the Railway Total Safety Project to enhance the railway safety, and carrying out researches on effective project management methods with Systems Engineering techniques. To support that, we propose the more effectual management method of constructing the Railway Safety Test Facilities applying the model-based systems engineering tool to the research.

• 항공우주시스템공학회지
• /
• 제17권4호
• /
• pp.34-42
• /
• 2023

본 연구는 공군에서 운영되고 있는 "항공관제통합관리"체계 내 최근 추가된 항공안전관리시스템(SMS) 안전자율보고를 통해 접수된 안전보고 사례를 분석하여, 위해요인을 식별하고, 해당 지역(기지)별 개선사항을 제시하여, 향후 데이터 기반의 안전관리를 수행할 수 있는 기초를 마련하기 위함이다. 위해요인 식별을 위해 자율보고체계 내 16개로 분류된 데이터를 기반으로 1차적으로 기지별 분류를 하였고, 기종 및 기술된 내용을 기반으로 세부적으로 2차 분류하였다. 가장 많은 보고가 이루어진 관제협조(306건) 항목에 대하여 RCIAA(Reporting, Category, Identification, Analysis, and Action, 이하 RCIAA)과정(연구자 작성)을 거쳐 위해요인을 분석하였으며, 분석한 결과를 토대로 위해요인을 크게 정보 공유, 규정, 절차 교육·훈련 및 장비 항목으로 나누어 개선사항을 도출하였다. 위해요인 및 특정 개선사항이 기지별(12개) 로 상이함을 확인할 수 있었으며, 통계적 분석을 바탕으로 기지(지역)별 운항관제분야 안전관리의 방향을 제시할 수 있는 근거로 활용할 수 있다. 또한, 민(民)·군(軍)을 통틀어 특정 기지(지역)별 데이터 기반의 위해요인 분석 연구가 부족한 점에 비추어 볼 때 데이터를 기반으로 한 안전관리의 중요성을 재확인 할 수 있는 결과로 제시할 수 있을 것으로 사료된다.

• 대한안전경영과학회지
• /
• 제23권1호
• /
• pp.71-79
• /
• 2021

The railroad facilities are intended for long-term operation as the initial acquisition costs necessary for infrastructure construction are high. Therefore, regular maintenance of railroad facilities is essential, and furthermore, system reliability through systematic performance evaluation is required. In this study, the signal control system of railroad electrical equipment was selected as the subject of research and the performance evaluation target facility selection study was conducted using AHP. The results of the study can contribute to the reliability of the signal control system as well as to the reliability of the railroad system, which is a higher system.

• 한국가스학회지
• /
• 제15권6호
• /
• pp.1-7
• /
• 2011

도시가스 공급시설에서 위험인자의 계측은 근래까지 인력에 의하여 측정 및 확인되었으며 유선통신을 이용하여 원격모니터링 시스템으로 진화해왔다. 더 나아가 국내/외 산업시설은 무선통신 기반 원격 모니터링 시스템 및 제어 시스템을 개발하여 관리의 효율성을 향상시켜왔다. 그러나 외부에서 데이터를 확인이 즉각적으로 확인하기 위해서는 유선으로 PDA나 노트북에 연결함으로써 효율성과 편의성이 감소되기 때문에 본 논문은 증강현실 기반 모바일 도시가스 안전관리 시스템을 개발하여 도시가스 공급시설의 안전관리 효율성을 개선하고자 한다.

• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2002년도 추계학술대회
• /
• pp.101-111
• /
• 2002

• 한국철도학회논문집
• /
• 제9권4호
• /
• pp.482-486
• /
• 2006

The Systems Engineering Management Plan (SEMP) is the primary, top level technical management document for the integration of all engineering activities at the project plan phase. This document defined the activities to plan, control, and perform overall engineering integration. To develop the SEMP for Railway Safety System, several standards are reviewed and analyzed. And then a common requirement for SEMP preparation is derived from the results of analysis. Also, the SEMP example available practically applies to Railway Safety System. In particular, The SEMP focused on controling technical program management has been organized so far, but in this study the detailed contents of SEMP put stress on project management is derived. And it is related to each other between project management and technical engineering management. At the end, to continuously manage the items and contents of the SEMP, a database management and an automatic document generation system is presented using Computer-Aided Systems Engineering (CASE) tool.

• 품질경영학회지
• /
• 제46권3호
• /
• pp.411-424
• /
• 2018

Purpose: The purpose of this study is to improve submarine TACM launcher system safety device performance. Methods: In this study, EPLD(Electrically Programmable Logic Device) control and time sharing method to the safety device actuator motor and discrete signal processor in launch control panel were used to resolve unusual performance of safety system. Results: The result of this study are as follows; First, sporadic stopping of safety device actuator motor due to insufficient In-Rush current was resolved. Second, repeat of safety device condition as lock & release due to chattering for motor activating was resolved. Third, simultaneous release function for safety device actuator was available. Conclusion: The unusual performance of function for submarine TACM launcher system was overcame by applying EPLD control and time sharing method. The suggestions were proved by performance test in the pressure chamber. The results of this study enhanced survivability of ${\bigcirc}{\bigcirc}{\bigcirc}$ class submarine from enemy torpedo.