• Nuclear Engineering and Technology
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• 제36권3호
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• pp.263-275
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• 2004

For the safe management of nuclear facilities, including a radioactive waste repository, data about the facility site and the surrounding environment must be collected and managed systematically. This is particularly true for a radwaste repository, which has to be institutionally controlled for a long period after closure. The objectives of this study are (1) to establish a systematical management plan for information about a radwaste repository site and its environment, and (2) to design a database management program for this information, based on the Relative Database Management System (RDBMS). The spatial data are designed by the geodatabase, which is a new object, based on the RDBMS, to manage spatial information related to the database. To meet this requirement, a new program called 'Site Information and Total Environmental data management System (SITES)' is being developed. The scope that produced from the first step of the present study for development of the SITES is introduced. The database is designed to combine spatial and attribute data, and is designed for the establishment of the Geographic Information System (GIS). The hardware and software systems are designed with consideration given to the total data management of the items within the radioactive environment.

• Nuclear Engineering and Technology
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• 제41권4호
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• pp.477-492
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• 2009

In this paper, we discuss the experiences during the preparation of the Wolsong Low- and Intermediate-Level Radioactive Waste Disposal Center. These experiences have importance as a first implementation for the national LILW disposal facility in the Republic of Korea. As for the progress, it relates to the area of selected disposal site, the disposal site characteristics, waste characteristics of the disposal facility, safety assessment, and licensing process. During these experiences, we also discuss the necessity for new organization and change for a radioactive waste management system. Further effort for the safe management of radioactive waste needs to be pursued.

• 한국태양에너지학회 논문집
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• 제40권4호
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• pp.35-44
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• 2020

Currently, various policies regarding ecofriendly vehicles are being proposed to reduce carbon emissions. In this study, the required areas for charging electric vehicle (EV) batteries using electricity produced by photovoltaic (PV) power plants were estimated. First, approximately 2.4 million battery EVs, which represented 10% of the total number of vehicles, consume approximately 404 GWh. Second, the power required for charging batteries is approximately 0.3 GW, and the site area of the PV power plant is 4.62 ㎢, which accounts for 0.005% of the national territory. Third, from the available sites of buildings based on the region, Jeju alone consumes approximately 0.2%, while the rest of the region requires approximately 0.1%. Fourth, Seoul, which has the smallest available area of mountains and farmlands, utilizes 0.34% of the site for PV power plants, while the other parts of the region use less than 0.1%. The results of this study confirmed that the area of the PV power plant site for producing battery-charging power generated through the supply of EVs is very small. Therefore, it is desirable to analyze and implement more specific plans, such as efficient land use, forest damage minimization, and safe maintenance, to expand renewable energy, including PV power.

• 대한통합의학회지
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• 제4권3호
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• pp.81-91
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• 2016

Purpose : This study is conducted to analyze the safe awarenece, its related health education and the employee's requirements in a prime supplier and its subcontractor company, suggesting the proper measure in employee education program. Method : The employees of 'S' construction company and its subcontractor are surveyed during the period of April 15 from May 15 in 2016. The 324 questionnaires are statistically analyzed with the version 21.0 of SPSS. The general characteristics were calculated through the frequency analysis and descriptive statistics. The difference in safe consciousness between prime and subcontractor employee group was analyzed using t-test. Result : The statistics shows the employees in the prime company tend to observe the safe rules rather than the subcontractor employees(p<.005), but the latter are more conscious of safety in working environment than the former(p<.005). In addition, the subcontractor company did not provide his employees with the site for the safety-health education. Conclusion : The small-sized subcontractor company should identify its employees' requirements and supplement the lack of the safety and health education for the prevention of the industrial disasters. In details, the hand-on and practice-oriented leaning and teaching program development are suggested.

• 정보학연구
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• 제3권1호
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• pp.1-8
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• 2000

최근 대규모 구조물 건설공사가 많이 진행되고 있으며 이에 따른 크고 작은 피해가 유발된다. 설계에서 예측한 지반의 거동과 실제 굴착할 때 지반의 거동과의 차이가 발생되면 피해가 발생되는 경우가 많다. 이러한 문제점을 해결하기 위하여 본 연구에서는 건설공사 현장에서 계측기를 설치하여 수집되는 정보를 분석함으로써 구조물과 지반의 거동을 예측하고 위험요소를 제거할 수 있음을 확인하고, 또한 향후 유사공법을 적용하여 시공할 때 지반 공학적인 측면에서 계측된 정보를 제공하고자 하였다.

• 터널과지하공간
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• 제4권1호
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• pp.38-46
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• 1994

This paper concerns the design of blasts adjacent to structures and facilities. In order to investigate the site characteristics, measurements of in-situ wave propagation and laboratory tests of rock cores taken from the boreholes were carried out. Effects of rock media and delay intervals on ground vibration levels were identified from over sixty measurements of three times of test blasts. For practical use in the field, an empirical propagation equation was derived so as to reflect the characteristics of rock media and delay effects. Safe limits of vibration level for structures were conservatively established based on various suggested criteria. Safe limits for facilities were adopted so that vibration levels induced by blasting should not exceed the allowable limits specified in the manufacturer's installation condition. Suggested were blast pattern and operation to enhance the rock fracturing and to reduce the ground vibration levels under the restricted conditions.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2003년도 가을 학술논문집
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• pp.549-555
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• 2003

방사성 폐기물 처분장의 건설과 안전한 운영을 위해서 정부 관계기관은 인$\cdot$허가를 위한 관련서류를 요구하고 있다. 이러한 인허가 요건을 만족시키기 위해 일반 및 방사선환경영향 보고서, 부지조사 보고서 및 안전성평가 보고서 등의 방대한 자료가 생산된다. 따라서 이들 자료들은 부지조사 단계에서부터 효율적으로 수집되고 관리되어야 할 필요가 있다. 특히 방사성 폐기물 처분장의 경우에는 처분장 폐쇄 후에도 장기적인 안전성 관리가 요구되는바 감시망의 운영이 필요하며 이를 통해 향후에도 환경 관련 자료들의 지속적인 도출과 함께 시설의 효율적인 관리를 위해 이들 data의 체계적인 수집 및 관리가 요구된다. 이러한 필요성에 따라 원자력환경기술원에서는 데이터베이스와 이러한 데이터베이스를 토대로 전산분석을 수행할 수 있는 SITES (Site Information and Total Environmental Data Management System) 프로그램을 개발하고 있다. 본 논문에서는 SITES 개발을 위해 도출된 지리정보 시스템 구축 방안에 대하여 보고하고자 한다. SITES에 포함될 지리정보시스템 개발의 첫 단계로서 SITES의 데이터베이스 연계를 위한 지리정보시스템의 기본 개념 및 기능과 주제도면의 선정, 관리 및 자료 분석 방안과 함께 개발이 진행중인 SITES와의 연계방안에 대해서 기술하고자 한다.

• Archives of Plastic Surgery
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• 제39권1호
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• pp.3-10
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• 2012

The free muscle-sparing transverse rectus abdominis myocutaneous (MS-TRAM) and deep inferior epigastric perforator (DIEP) flaps involve transferring skin and subcutaneous tissue from the lower abdominal area and have many features that make them well suited for breast reconstruction. The robust blood supply of the free flap reduces the risk of fat necrosis and also enables aggressive shaping of the flap for breast reconstruction to optimize the aesthetic outcome. In addition, the free MS-TRAM flap and DIEP flap require minimal donor-site sacrifice in most cases. With proper patient selection and safe surgical technique, the free MS-TRAM flap and DIEP flap can transfer the lower abdominal skin and subcutaneous tissue to provide an aesthetically pleasing breast reconstruction with minimal donor-site morbidity.

• 한국안전학회지
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• 제27권6호
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• pp.151-159
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• 2012

This study implemented self-management technique to improve supervisory behaviors at a construction site. Self-management in the current study consisted of goal setting, self-monitoring and providing reward for two supervisory behaviors; (1) conducting safety observations of workers safety behavior and (2) providing safe related feedback. Two supervisors severed as participants. An AB within-group design was adopted. After baseline(A), self-management technique was implemented(B). Results suggested that self-management was effective in increasing the two supervisory behaviors. Moreover, the increased supervisory behaviors were associated with improvement in workers' safety performance.

• Nuclear Engineering and Technology
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• 제43권2호
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• pp.175-186
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• 2011

Previous evaluations of the safety of the Ulchin Nuclear Power Plant in the event of a tsunami have the shortcoming of uncertainty of the tsunami sources. To address this uncertainty, maximum and minimum wave heights at the intake of Ulchin NPP have been estimated through a parametric study, and then assessment of the safety margin for the intake has been carried out. From the simulation results for the Ulchin NPP site, it can be seen that the coefficient of eddy viscosity considerably affects wave height at the inside of the breakwater. In addition, assessment of the safety margin shows that almost all of the intake water pumps have a safety margin over 2 m, and Ulchin NPP site seems to be safe in the event of a tsunami according to this parametric study, although parts of the CWPs rarely have a margin for the minimum wave height.