• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 춘계학술발표회
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• pp.23-29
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• 2005

우리나라 해운기업은 국제적인 경쟁력 속에서 해운강국으로 발전하기 위해서 정부 및 해운선사가 안전관리의 활성화로 해상에서의 인명보호 및 해양환경의 보호를 위해 가일층 노력하고 있는데 아직까지도 내항선에서의 안전관리에 관한 활성화방안이 미흡하여 내항선에 맞는 체계적이고 현실적인 안전관리 활성화방안이 절실하다. 따라서 본 연구에서는 오늘날 해운기업에서 국제적으로 중요시하는 안전 및 해양환경보호에 중점을 두고서 내항선 안전관리의 성과분석 및 활성화 방안의 개발 방향을 제시하였다.

• 한국안전학회지
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• 제29권4호
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• pp.15-22
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• 2014

As the risk of the various external risk was increased, a study on the integrity assessment of the nuclear transport cask was needed. In this paper, an integrity assessment of the nuclear transport cask under the ballistic impact was studied. The projectile with L/D = 5 was used in simulation. The applied head shapes of the projectile were five types such as flat shape, conical shape, hemispherical shape, truncated conical and sliced flat shape, respectively. The range on the velocity of the projectile was 85 m/s to 680 m/s. The cask body of the nuclear transport cask was not penetrated by the projectile speed up to Vprojectile = 510 m/s. As the cask body was penetrated by the all types projectile with Vprojectile = 680 m/s and the cask lead in the nuclear transport cask was collided with the projectile. As the projectile moved to 31.3 mm in the cask lead, the cask lead was not penetrated by the projectile with Vprojectile = 680 m/s. The integrity assessment on the nuclear transport cask under ballistic impact up to Vprojectile = 680 m/s was obtained.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2017년도 춘계학술논문요약집
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• pp.143-144
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• 2017

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.220-221
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• 2014

Recently It has been required the research for the load of transport of the unit module to secure the safety of the transport locking device. So the purpose of this study is to analyze the probability distribution of the load of transport of unit modular when transporting unit modular by vehicle.

• 한국안전학회지
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• 제33권4호
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• pp.98-104
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• 2018

Macroscopic accident analyses have been conducted to incorporate transportation safety into long-term transportation planning. In macro-level accident prediction model, exposure variable(e.g. a settled population) have been used as fundamental explanatory variable under the concept that each trip will be subjected to a probable risk of accident. However, a settled population may be embedded error by exclusion of active population concept. The objective of this research study is to develop macro-level accident prediction model using floating population variable(concept of including a settled population and active population) collected from mobile phone data. The concept of accident prediction models is introduced utilizing exposure variable as explanatory variable in a generalized linear regression with assumption of a negative binomial error structure. The goodness of fit of model using floating population variable is compared with that of the each models using population and the number of household variables. Also, log transformation models are additionally developed to improve the goodness of fit. The results show that the log transformation model using floating population variable is useful for capturing the relationships between accident and exposure variable and generally perform better than the models using other existing exposure variables. The developed model using floating population variable can be used to guide transportation safety policy decision makers to allocate resources more efficiently for the regions(or zones) with higher risk and improve urban transportation safety in transportation planning step.

• 한국ITS학회 논문지
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• 제21권1호
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• pp.221-239
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• 2022

자율주행차의 안전성을 실효성 있게 평가하기 위해서는 기하구조, 교통안전시설, 혼잡도, 기상 등 다양한 항목들이 평가 시나리오 내에 고려될 필요가 있다. 이에 본 연구에서는 자율주행차 평가 시나리오에 반영되어야 하는 구성요소들을 도출하기 위해 먼저 평가 시나리오의 체계를 수립한 후 반영될 구성요소를 계층별로 범주화하였다. 이후 계층별로 관련 문헌을 검토하여 자율주행차 평가에 영향을 줄 수 있는 모든 평가 구성요소 후보를 도출한 후, 전문가 설문조사 결과를 바탕으로 총 77개의 자율주행차 평가 시나리오 구성요소들을 선정하였다. 선정된 자율주행차 평가 구성요소들은 시뮬레이션 평가, 주행시험장 평가, 실도로 평가 등에서 자율주행차의 안전성 평가를 위한 시나리오 개발에 많이 활용될 것으로 기대된다.

• 방사선산업학회지
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• 제6권1호
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• pp.41-47
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• 2012

A field tracer experiment using a radioisotope was conducted to analyze the transport and dispersion characteristics of pollutants in the coastal area near a Wolsung. A rod float including GPS was released to track the paths of radioisotope. NaI detector was installed to measure the released radioisotope from the boat, and measurements were performed with the real time. The measured tracer data by a field experiment can be used as the basic data for understanding the transport characteristics of pollutants and verifying numerical models near the offshore.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2009년도 춘계학술발표회
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• pp.79-84
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• 2009

최근 선박의 대형화, 고속화가 지속되면서 기존 선박 통항로가 협소해졌을 뿐 아니라, 해상교통시스템 개선 및 최적화, 해상구조물 설치, 항만 정비사업 등이 활발하게 이루어짐에 따라 이러한 시설에 의한 해양사고 발생의 개연성이 높아지고 있다. 이러한 시점에 국토해양부에서는 항해민감시설이 선박의 안전항해에 미치는 정도를 전문기관에 의해 사전평가하여 안전을 확보하고, 해양사고 발생률을 낮출 수 있는 해상교통안전지단제도를 법제화하여 도입하게 되었다. 본 연구에서는 해상교통안전진단제도에 대한 이해를 넓힐 목적으로 진단제도의 개념 및 필요성 등에 대해 소개하고, 국내외 유사진단제도를 분석하여 향후 방향을 설정할 수 있는 계기를 만들었다. 또한 진단제도의 과학적 표준적 시행을 위하여 현재 진행중인 진단제도 기술기준 연구에 대해서도 소개하고자 한다.

• 한국항해항만학회지
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• 제34권9호
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• pp.699-704
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• 2010

Recently, the navigation risk is increasing significantly with growing of vessels' volume and propelling marine facilities, water bridges and port development etc. As a result, Ministry of Land, Transport and Maritime Affairs enacted a new law called MSA(Maritime Safety Audit) as a comprehensive maritime traffic safety management scheme in order to ensure safety improvements from the early planning stage to post managing of the development which affect the maritime traffic environment. MSA as a tool for improving maritime traffic safety is a formal safety diagnosis assessment in the existing or future ship's fairway by an independent audit institute. It examines the potential hazards of maritime traffic safety about the port development, if necessary, and is to ensure the implementation of appropriate safety measures. The primary purpose of MSA is to identify potential risk elements affecting safe navigation. This paper is aimed to introduce the backgrounds, the necessity and efficiency of MSA and also to describe some technical standards and diagnostic procedures.

• Nuclear Engineering and Technology
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• 제38권6호
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• pp.489-504
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• 2006

A review has been made for the previous studies on safety of a geologic repository for high-level radioactive wastes (HLW) related to autocatalytic criticality phenomena with positive reactivity feedback. Neutronic studies on geometric and materials configuration consisting of rock, water and thermally fissile materials and the radionuclide migration and accumulation studies were performed previously for the Yucca Mountain Repository and a hypothetical water-saturated repository for vitrified HLW. In either case, it was concluded that it would be highly unlikely for an autocatalytic criticality event to happen at a geologic repository. Remaining scenarios can be avoided by careful selection of a repository site, engineered-barrier design and conditioning of solidified HLW. Thus, criticality safety should be properly addressed in regulations and site selection criteria. The models developed for radiological safety assessment to obtain conservatively overestimated exposure dose rates to the public may not be used directly for the criticality safety assessment, where accumulated fissile materials mass needs to be conservatively overestimated. The models for criticality safety also require more careful treatment of geometry and heterogeneity in transport paths because a minimum critical mass is sensitive to geometry of fissile materials accumulation.