• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2009년도 춘계학술대회 논문집 에너지변화시스템부문
• /
• pp.192-194
• /
• 2009

Came to make a many development from the domestic railroad operation. The light rail transit enterprise is constructed plentifully. Consequently, the passenger safety importantly this, is recognized. The safety device which is applied in train control technique of the new railroad enterprise is important. Respects the updated technology development and an introduction of train control the safeguards is applied. Consequently, From the present paper researched the type and a technical development present condition of perception technique from platform safety device.

• 한국철도학회논문집
• /
• 제10권1호
• /
• pp.57-66
• /
• 2007

1974. 8. 15 SeoulMetro, beginning with the first electric railway established at six cities, so it is managing mass transportation of traffic. Especially, in case of seoul, It is managing that from one to eight lines, 286.9km, 265 stations have installed and now it is carrying about 5.5million of passengers everyday, and 2,000million passengers a year. So accident is increasing from the station every year. For this measure, SeoulMetro prepares safety fence for passengers crash but, as suicides or people who watch the accident took place, for at the bottom of passengers crash protection, PSD installing is needed. Even though, PSD is managing ATO section but, in controlling SeoulMetro, one to four lines sections are (ATS, ATC)section. Between as ATS, ATC section, ATO section, subway gate and PSD must have opened and crossed always at the time. And the interlock control corrosion protection gate, managing skills with installation, method, using in history, apply to 10rail cars one train sets, and maximum applying 2224% sections of passengers congested that consideration is to be needed. So 2004, SeoulMetro improved technology and basie design of PSD at ATS section. Based on this, from 2005.4 to 2006.6, using subway 2lines per 12stations set the model installation(full type 11stations, half type 1station) After installing in case of success, it is going about to suggest that effective analysis and hereafter subject.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2011년도 춘계학술대회 논문집
• /
• pp.145-153
• /
• 2011

In the system necessary for safety such as the train control system, to make train control information be sent correctly is very important to enable organic movement between trains. In the case of the system such as RF-CBTC (Radio Frequency Communication Based Train Control) the control related information is sent through wireless transmission between on-board system of a train and wayside transmitter. The wayside transmitter collects the running information such as location, velocity from the on-board system and operates the optimizing control by sending the control information such as the target, limited velocity to the on-board system. But, when the communication disconnect or train failure, the critical hazard such as train collision or derailment may be possible because the RF-CBTC depends on the information through wireless communication. This paper discribes of performing Fall-Back system to detect train position in the case of rail break or communication failure to avoid train accident and allows train to be operated safely. It can be implemented with ATP function through track circuits using active-type transformers and axle counters, and allows train to be operated manually in emergency status.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2007년도 춘계학술대회 논문집
• /
• pp.58-68
• /
• 2007

철도차량 옥상 정비시 산업재해를 방지하기 위해서는 안전성을 확보한 철저한 준비 및 검토가 선행 되어야한다. 차량의 정비시 공정별 위험요소 및 제반 문제점을 도출하여 해결함으로써, 산업 재해를 방지 할수 있다. 차량의 중 정비시 추락 재해는 옥상 작업인 차량의 옥상에서 발생한다. 정비의 특성상 차량을 분리하고, 차량의 대차를 분리 한후, 받침대 위에 차량을 올려놓은 상태에서, 옥상 작업은 안전 시설의 효과적인 설치 및 활용이 어렵다. 4M 에 의한 분석을 통하여, 옥상 작업시 차량의 지붕에 안전 난간을 설치하여, 추락 재해를 방지하고, 심리적 불안감을 해소하여, 안전하게 작업할 수 있는 방안을 연구 하였다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2007년도 춘계학술대회 논문집
• /
• pp.1168-1173
• /
• 2007

The Seoul Subway is one of the most heavily used Subway System in the world. It provides reliable transportation services, conveys nearly 4 million Passengers across 117 subway stations with a length of 134.9 Km. Over the years the safety for the Subway has been a major concern, trains going off the track, equipment failure, careless operation, Signal failure are increasing day by day. In a Recent Public opinion 40% said the causes to above facts are Vehicle breakdown because of Operators, Old rail defect, Quality of material. 20% of the opinion said the obstacles were because of Operation, crew carelessness, negligence in signal operation. In case of any accident the crew members cannot resolve the issue on site (Aid insufficiency), because of lack of knowledge and carelessness. The main obstacles for Subway are vehicle breakdown, Electric equipment failure, Signal Equipment failure, and Crew carelessness. This paper aims to provide major problems which are needed to be solved as quickly as possible for citizen's safety for a comfortable subway system making a comfortable ride and providing better service gradually.

• 한국도시철도학회논문집
• /
• 제6권4호
• /
• pp.259-268
• /
• 2018

본 논문은 서울교통공사 및 한국철도공사의 기관사를 대상으로 인적오류 위험요인과 관련 경험빈도에 대한 설문을 수행하여 기관별 운행시스템과 호선별 운행시스템 관점에서 오류유발 요인을 분석하였다. 도시철도 사고유발의 근본적인 원인 제거와 감소를 목적으로 하며 도시철도를 운영하는 시스템에서 발생하는 인적오류는 사고발생의 종류와 상황에 따라 대처하는 문제와 인지적 문제를 포함하고 있기 때문에 요인별 관점에서의 연구를 기반으로 접근하고자 한다. 인적오류를 감소시키는데 기여하여 도시철도 사고를 저감 하고 지속적으로 안전한 철도 운행이 될 수 있도록 하고자 한다.

• 산업경영시스템학회지
• /
• 제31권1호
• /
• pp.41-48
• /
• 2008

Enhanced machine reliability has dramatically reduced the rate and number of railway accidents but for further reduction human error should be considered together that accounts for about 20% of the accidents. Therefore, the objective of this study was to suggest a new taxonomy of performance shaping factors (PSFs) that could be utilized to identify the causes of a human error associated with railway accidents. Four categories of human factor, task factor, environment factor, and organization factor and 14 sub-categories of physical state, psychological state, knowledge/experience/ability, information/communication, regulation/procedure, specific character of task, infrastructure, device/MMI, working environment, external environment, education, direction/management, system/atmosphere, and welfare/opportunity along with 131 specific factors was suggested by carefully reviewing 8 representative published taxonomy of Casualty Analysis Methodology for Maritime Operations (CASMET), Cognitive Reliability and Error Analysis Method (CREAM), Human Factors Analysis and Classification System (HFACS), Integrated Safety Investigation Methodology (ISIM), Korea-Human Performance Enhancement System (K-HPES), Rail safety and Standards Board (RSSB), $TapRoot^{(R)}$, and Technique for Retrospective and Predictive Analysis of Cognitive Errors (TRACEr). Then these were applied to the case of the railway accident occurred between Komo and Kyungsan stations in 2003 for verification. Both cause decision chart and why-because tree were developed and modified to aid the analyst to find causal factors from the suggested taxonomy. The taxonomy was well suited so that eight causes were found to explain the driver's error in the accident. The taxonomy of PSFs suggested in this study could cover from latent factors to direct causes of human errors related with railway accidents with systematic categorization.

• 한국건축시공학회지
• /
• 제20권5호
• /
• pp.471-480
• /
• 2020

국내 산업재해는 점진적으로 감소하고 있음에도 불구하고 건설업에서의 사망자는 전체 산업의 49.9%를 차지하고 있으며, 그 중 추락사고 사망자는 59.7%의 높은 비중을 차지하고 있다. 이에 따라 정부차원에서 건설업의 추락사고를 예방하기 위한 다양한 안전 활동 및 정책을 추진하고 있으나 그 효과는 미비한 실정이다. 반면 미국, 일본, 영국, 싱가포르 등 해외 선진국의 경우 각국의 상황에 적합한 안전 활동, 규제 및 정책 등을 펼친 결과, 국내보다 산업재해 발생율이 저조했다. 따라서 본 연구의 목적은 국내 산업안전보건법과 해외 선진국의 법령을 추락재해에 밀접한 영향을 미치는 기인물별로 비교·분석하여 국내 실정에 맞는 개선방안을 제시하는 것이다. 비교 분석 결과, 본 연구에서는 국내 건설현장의 추락재해 저감을 위한 개선방안으로 1)추락 높이에 대한 기준 개선 2)안전난간 상부난간대 높이의 개선 3)수평안전대 부착설비 연구 및 지침의 개정 등의 개선방안을 제시하였다. 향후 본 연구는 해외 선진국의 사례분석을 위한 기초자료로 활용될 것이다.

• 한국도로학회논문집
• /
• 제10권4호
• /
• pp.235-245
• /
• 2008

본 연구에서는 도로의 증가와 더불어 급속히 증가하고 있는 터널에서 차량이 터널에 진입할 때의 속도편차를 분석하여 터널입구부의 안전성을 증진할 수 있는 방안에 대하여 연구하였다. 터널의 존재는 운전자에게 그 자체만으로서 단순한 오르막 경사보다 더 큰 속도 감소를 유발하며, 터널 입구부에서 발생하는 차량 충돌사고는 다른 도로구간에서 발생하는 사고와 비교해 볼 때 피해가 더 크다. 따라서 사고로 인한 피해를 경감시키기 위해 터널 입구부에 PE방호벽이나 가드레일 등의 안전시설을 설치하고 있지만, 운전자에게 이것은 또 다른 장애물로 인식될 수 있다. 터널 입구부에 설치되어 있는 안전시설물의 형태는 크게 PE방호벽, 가드레일, PE 드럼 등이 있으나, 본 연구에서는 고속도로터널 입구에 일반적으로 가장 많이 설치되어 있는PE방호벽과 운전자에게 장애물로 인식될 수 있는 이러한 안전시설물이 설치되어 있지 않은 경우로 크게 구분하였다. 또한 터널 내부로 진입 할 때 갓길을 포함 우측방여유폭의 차이가 큰 경우와 작은 경우로 구분하였다. 4가지 형태의 터널 입구부에서의 차량속도와 일반도로구간에서의 YDS(차량검지체계)로 수집된 속도의 차이를 분석에 사용하였다. 통계적 검증을 통하여 안전시설물 설치 형태와 우측방여유폭의 차이에 따른 각 Case별 유의성을 검토하여 터널 입구부 안전성 증진을 위한 대안을 제시하고자 한다.

• International Journal of Railway
• /
• 제1권4호
• /
• pp.149-156
• /
• 2008

During maintenance or construction works in or at the tracks of railways, high risks for passengers and railway staff, especially for the workers on the construction site exist. The high risks result out of the movement of rail vehicles, like trains or construction vehicles, which must be faced by using any available technical and operational technologies for securing them against the environment. Therefore, it is necessary to evaluate the level of protection continuously and to identify new and innovative methods and technologies for the protection of the gang (construction worker, machines and material). Especially on construction sites at line sections with two or more parallel tracks but also with single tracks, there are still a lot of incidents and accidents mostly with seriously injured persons or fatalities. These were mainly gang members that breach the railway-loading gage. By using proper warning or protection systems, the avoidance of such accidents must be achieved. The latest developments. in gang protection systems concern on the one hand fixed barriers in the middle between the construction site and the operated track and on the other hand construction vehicles equipped with automatic warning systems. The disadvantage of such protection methods is that the gang can be warned against an approaching train but a monitoring of the gang members cannot be performed. Only one part of a potential dangerous situation will be detected. If the gang members will overhear the acoustic warning signal of the security staff and the workers will not leave the danger zone in the track, the driver of the approaching train had no chance to react to the dangerous situation. An accident is often inevitable. While the detection of acoustic warning signals by the gang members working on a construction site is very difficult, the acoustical planning of an automatic warning system has to be designed for an acoustic short range level of one meter besides the construction vehicle. The decision about the use of today's technical warning system (fixed systems, automatic warning systems, etc.) must be geared to the technical feasibility and the level of safety which is needed. Criteria for decision guidance to block a track should be developed by danger estimation and economical variables. To realize the actual jurisdiction and to minimize the hazards of railway operations by the use of construction vehicles near the tracks further developments are needed. This means, that the warning systems have to be enhanced to systems for protection, which monitor the realization of the warning signal as a precondition for giving a movement authority to a train. This method can protect against accidents caused by predictable wrongdoing. The actual state of the art technique of using a collective warning combined with additional security staff is no longer acceptable. Therefore, the Institute of Transportation System of the German Aerospace Center in Braunschweig (Germany) will develop a gang warning and protection system based upon imaging methods, with optical sensors such as video in visible and invisible ranges, radar, laser, and other. The advantage of such a system based on the possibility to monitor both the gang itself and the railway-loading gauge either of the parallel track or of the same track still in use. By monitoring both situations, the system will be able to generate a warning message for the approaching train, that there are obstacles in the track, so that the train can be stopped to prevent an accident. And also the gang workers will be warned, while they breach their area.