• 제목/요약/키워드: Cause of accident

검색결과 1,256건 처리시간 0.024초

최근 5년간 국내원전 운전경험보고서 분석 (An Analysis of Operating Experience Reports Published in the Domestic Nuclear Power Plants for Resent 5 Years)

  • 이상훈;김제헌;허남용
    • 한국압력기기공학회 논문집
    • /
    • 제9권1호
    • /
    • pp.35-39
    • /
    • 2013
  • The Operating Experience Report(OER) has written about the event and accident happened at a Nuclear Power Plant(NPP). The purpose of publishing the OER is to prevent the similar event or accident repeatedly by spreading the experience of a single plant to other plants personnel. Before initiating the analysis mentioned in this paper, 2,298 review reports for the same number of OER published from 2007 to June 2012 have been written to achieve the correct and objective statistics. The analysis introduced in this paper is performed with the various factors such as year, plant type, equipment, type of work, root-cause. The root-cause analysis is showed that the equipment problem is the major factor in domestic NPPs, but on the other hand human-error is the main part of the foreign NPPs. Moreover, while the number of the man-made event is decreasing, the equipment-made event is rapidly increasing in domestic NPPs.

예비위험분석기술(PHA)과 품질기능전개(QFD) 기법을 이용한 철도사고 시나리오 분석기술 개발 (Development of a Railway Accident Scenario Analysis Technique using a Preliminary Hazard Analysis(PHA) and a Quality Function Deployment(QFD))

  • 박찬우;곽상록;왕종배;홍선호;박주남
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2005년도 춘계학술대회 논문집
    • /
    • pp.151-156
    • /
    • 2005
  • The objective of this study is to devise an accident scenario analysis method adept at creating accident scenarios at the Preliminary Hazard Analysis(PHA) step of a hazard analysis for railway system. This approach was inspired by the Quality Function Deployment(QFD) method, which is conventionally used in quality management and was used at the systematic accident scenario analysis(SASA) for the design of safer products. In this study, the QFD provides a formal and systematic schema to devise accident scenarios while maintaining objective. The accident scenario analysis method first identifies the hazard factors that cause railway accidents and explains the situation characteristics surrounding the accident. This method includes a feasibility test, a clustering process and a pattering process for a clearer understanding of the accident situation. Since this method enables an accident scenario analysis method to be performed systematically as well as objectively, this method is useful in building better accident prevention strategies. Therefore, this study can serve to reduce railway accident and be an effective tool for a hazard analysis.

  • PDF

다중이용시설물 위험분석을 통한 안전공학적 개선 방안에 관한 연구 (에스컬레이터 및 수평보행기를 중심으로) (A research for improvement methods in the aspect of safety engineering through risk analysis of facilities for multiple use - Focused on escalator and passenger conveyors -)

  • 권순걸;김진수;김창은
    • 대한안전경영과학회지
    • /
    • 제15권1호
    • /
    • pp.31-40
    • /
    • 2013
  • For the matter of elevator, one of the multi-use facilities for unspecified public, the JIS has re-established and reformed to apply to the environment in South Korea for the past 20 years. In the aspect of safety assurance, it was inevitable to suggest improved measures. The government, Ministry of Public Administration and Security has secured the safety by enhancing the safety management functions in the elevator inspection standards and expanding its safety device measures. Further, the international inspection standard has been introduced, which is about unifying inspection standard system into the international standard code. In March 14th 2012, the international standard (EN) has been amended and fully announced. Escalator and passenger conveyor among lift devices have several common danger factor that cause safety accident. First, the accident caused by decreased braking power of brake. Second, the accident caused by the rate difference between handrail and tread-board. Third, the accident caused by defects of contraflow preventing device or carelessness inspection. Fourth, the accident caused by wet tread-board or wet floor of platform which makes passenger slip and fall. As the improvements to prevent and reduce these negligent accidents, the inspection list to check and methods should be subdivided and applied for each accident likelihood cause for safety management enhancement and safety assurance of existing escalator and passenger conveyors. The escalators and passenger conveyors without safety devices in existence should be obliged to modify the part of the system or install additional safety device. With making these measures obligations, it requires to improve the system to be suitable for the international inspection standard and to have measures to prevent safety accidents. It also needs to arrange improvements for skid accident of tread-board by the external environment factors such as snow and rain.

다항로짓모형을 이용한 고속도로 다중추돌사고 특성 분석 (An Analysis of Multiple-Vehicle Accidents on Freeways Using Multinomial Logit Model)

  • 전현명;김진희
    • 한국ITS학회 논문지
    • /
    • 제19권5호
    • /
    • pp.1-14
    • /
    • 2020
  • 본 연구는 고속도로 교통사고의 사고차량대수에 따른 요인의 영향을 분석하기 위해 다항로짓모형을 이용하여 연구를 수행하였다. 기존의 교통사고 심각도 연구에서는 사고차량대수에 대한 분석이 미흡하였다. 그러나 다중추돌사고는 인명피해 사고로 이어질 가능성이 높고, 사고 지속시간과 사고처리를 위한 사회적 비용이 크기 때문에, 다중추돌사고에 영향을 미치는 요인을 파악하는 것이 중요하다. 따라서 본 연구에서는 사고차량대수를 사고의 요인이 아닌 사고의 결과로 해석하고, 이에 미치는 사고요인별 영향을 분석하였다. 분석결과, 야간사고와 고속도로 본선, 터널, 교량에서 발생한 사고, 운전자과실, 도로장애물, 노면문제로 인한 사고, 내리막 경사, 중차량 연관 사고가 다중추돌사고로 이어질 가능성이 높은 것으로 분석되었다.

건설중대재해 사례 연구 (A Case Study on the Serious Accidents of Construction)

  • 장동일;이명구
    • 한국안전학회지
    • /
    • 제11권1호
    • /
    • pp.108-120
    • /
    • 1996
  • It is a problems in industrial accidents that the knowledge for industrial accidents is obtained by experience, not by experiment. This experiential knowledge is obtained by Investigating accident cases and utilizing those for safety education. Therefore, in this paper, the situation about the serious accident of construction is analyzed by occupation, a kind of construction, time group, season, type of accident, and accidental cause. And the mutual · relations of these factors are studied. The most frequent type of the serious accidents of construction Is the falling accident. It happenes most frequently at apartment construction among kinds of construction and to structural worker, finishing worker, normal worker in order among occupations. And it is found that the most critical causes of the falling accident are the imperfection of safety facilities and unwearing of protection equipments, so a number of accidents can be reduced by the expansion of safety facilities and wearing of protection equipments absolutely. The counterplan of prohibition of accidents and the direction of government policy are presented by a series of nalyses for accident cases.

  • PDF

철도화재 안전관리체계 개선 및 장기전략 수립 방안에 관한 연구 (A study on the establishment of advanced safety management system and long-tenn plan for railway fire safety improvement)

  • 왕종배;김상암;곽상록
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2003년도 추계학술대회 논문집(II)
    • /
    • pp.229-234
    • /
    • 2003
  • In this paper, the elemental components and improving purpose in advanced safety management system are reviewed to cope with a railway fire accident. And a considering procedure(V-cycle) of long-term plan for railway fire safety improvement is proposed. For the purpose of preventing recurrence of accident, items which have to be considered in the course of accident investigation and cause analysis are presented according to the stage of investigation activity.

  • PDF

현금수송구조의 개선방안 (The Improvement Plan of a Cash Transportation Structure)

  • 홍원용
    • 시큐리티연구
    • /
    • 제1호
    • /
    • pp.409-423
    • /
    • 1997
  • Cash is apt to cause a accident in circulation process regardless of a time, a place and a subject due to its particularity. I propose a good service through circulation harmony by remodeling the system of the structure of cash supply and demand. And I propose accident prevention countermeasure by removing a caxh accident by the simplification, specialization and soientification of money business. I discuss the present condition and the points of cash transportation structure in Chapter 2 and the improvement plan of cash transportation structure in Chapter 3, and conclude in Chapter 4.

  • PDF

ADINA FSI를 활용한 원심주조기 폭발사고 원인 규명에 관한 법공학적 연구 (Forensic Engineering Study on the Explosion Accident Investigation of the Centrifugal Casting Machine Using ADINA FSI)

  • 김의수;김종혁;김무곤
    • 한국안전학회지
    • /
    • 제26권4호
    • /
    • pp.27-33
    • /
    • 2011
  • Forensic Engineering is the area covering the investigation of products, structures that fail to perform or do not function as intended, causing personal injury or damage to property. To investigate explosion accident of the centrifugal casting machine in terms of the forensic engineering, in this paper, the computing simulation using ADINA FSI has performed to investigate that the effect of the Check-Pin fracture by the flow phenomena and molten metal weight and the mechanical properties test of the accident Check-Pin has performed using the instrumented indentation technique. Through these studies, the safety accident that may occur in centrifugal casting machine can be minimized by performing specialized and systematic investigation of the accident cause in terms of the forensic engineering.