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REVIEW OF SPENT FUEL INTEGRITY EVALUATION FOR DRY STORAGE

  • Kook, Donghak;Choi, Jongwon;Kim, Juseong;Kim, Yongsoo
    • Nuclear Engineering and Technology
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    • v.45 no.1
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    • pp.115-124
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    • 2013
  • Among the several options to solve PWR spent fuel accumulation problem in Korea, the dry storage method could be the most realistic and applicable solution in the near future. As the basic objectives of dry storage are to prevent a gross rupture of spent fuel during operation and to keep its retrievability until transportation, at the same time the importance of a spent fuel integrity evaluation that can estimate its condition at the final stage of dry storage is very high. According to the national need and technology progress, two representative nations of spent fuel dry storage, the USA and Japan, have established different system temperature criteria, which is the only controllable factor in a dry storage system. However, there are no technical criteria for this evaluation in Korea yet, it is necessary to review the previously well-organized methodologies of advanced countries and to set up our own domestic evaluation direction due to the nation's need for dry storage. To satisfy this necessity, building a domestic spent fuel test database should be the first step. Based on those data, it is highly recommended to compare domestic data range with foreign results, to build our own criteria, and to expand on evaluation work into recently issued integrity problems by using a comprehensive integrity evaluation code.

A Study on Universal Design Guideline of the Urban Railway Station: Transit Zone (도시철도 역사 환승구간의 유니버설 디자인 기준에 관한 연구)

  • Kang, Byoung-Keun;Lee, Ju-Yeon
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.22 no.2
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    • pp.35-44
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    • 2016
  • Purpose: Recently, Universal design has been applied to a variety of concepts of social integration in the national legislation and institutions, however, the applying to urban railway station is not satisfied. Most of cases, the handicapped can not work continuously, universal design must be provided. Methods: This study derives the detailed criteria through comparing and analyzing an national and international universal design-related system in transit zone. And the status is investigated in transit zone of domestic urban railway station. Improved national standard requirements are derived considering the type of the handicapped and universal design principles. Result: The domestic status shows that the most lacking entry criteria is not specified in national standards or the design is a lowest-level required by criteria through comparing detailed criteria drawn into domestic analysis. Therefore, in order to provide a pedestrian environment to meet the universal design principles and requirements for the handicapped, there is a need to re-establish with a specific national standards. Implications: This study will draw on universal design standards for seamless transfer in transit zone of urban railway station. The next studies are needed to target the overall paths ranging from outside to landing in urban railway station.

A Study on the Improvement Direction of Life Safety Codes for High Fire Risk Building Applications (화재위험성이 높은 건축물의 용도를 대상으로 한 인명안전기준의 개선방향)

  • Kwon, Young-Jin;Jin, Seung-Hyeon;Lee, Byeong-Heun;Koo, In-Hyuk
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.53-54
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    • 2021
  • Grenfell Tower was renovated in 2014 and 2016 at a high cost to replace the exterior materials, windows and co-heating facilities of the building. The exterior materials used during the repair work were sandwich panels filled with polyethylene and plastic, which were expanded on the aluminum metal surface. It is a product called Celotex RS 5000, a low-resolution but inexpensive repair material, and is currently an external material that cannot be used in high-rise buildings. Similar domestic fire cases began to focus social attention on the safety of high-rise buildings through the Busan Residential Complex Fire (2010), Uijeongbu Urban Living Housing Fire (2015), and Ulsan Residential Complex Fire (2020), and residents' safety concerns are increasing. In Korea, the occurrence and risk of similar fires are high, so setting up fire prevention measures through fire case investigation is considered the most basic measure in securing human safety. Therefore, the purpose of this study is to examine the status of fire damage caused by domestic and foreign eruptions, domestic and international research status and related regulations on external materials and windows starting from the Grenfell Tower fire in England.

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A Study on the Education Status of Lingerie and Pattern-Making Actual Conditions in the Domestic Lingerie Business (국내(國內) Lingerie업체(業體)의 교육(敎育) 및 Pattern제작실태(製作實態)에 관(關)한 연구(硏究))

  • Cha, Su-Joung;Sohn, Hee-Soon
    • Journal of Fashion Business
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    • v.8 no.4
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    • pp.80-93
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    • 2004
  • The purpose of this study is to recognize about lingerie company's education and pattern-making actual conditions. This study used a questionnaire method. Respondent of survey is designers who work in exist lingerie company. The collected data were statistically processed using SPSS(Statistical Package for Social Science) for technical statistical analysis, correlation analysis. The results of this study can be summarized as follows; 1. Most of lingerie designers educated lingerie design, pattern and textiles etc. after entering a company and satisfaction 57.3% about education has satisfaction of intergrade. 2. Designer's 87.8% has satisfaction more than intergrade about own pattern-making technology and work career is high, satisfaction about pattern-making technology is high. 3. Correlation was expose that is in lingerie education availability and optimum level arrival period of pattern-making ability before entering a company. In case take lingerie education before entering a comany, thought that optimum level arrival period of pattern-making ability is shorter. 4. Most of lingerie company designers used flat pattern-making method and draping method. 5. There is correlation between work career and using the basic pattern. Work career was expose that make and use only own basic pattern in case is more than 3 years. 6. Contents about deepening pattern-making technology are most by 92.2% to contents of lingerie reeducation.

A Study of the Using Application Program Interface (API) for Improving Productivity in Construction Engineering (건설 엔지니어링 생산성 향상을 위한 Application Program Interface(API) 활용방안에 대한 연구)

  • Park, Gi-Back;Jung, Young-Ho;Ham, Nam-Hyuk;Kim, Jae-Jun
    • Journal of KIBIM
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    • v.3 no.3
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    • pp.29-38
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    • 2013
  • Domestic construction industry is larger in size, and its shape is more complex. As a result, collaboration and information management tasks are difficult to manage in a way that conventional 2D-based exchange of information. BIM technology was introduced as a solution for this. But BIM only provides a very limited set of features such as Constructability review, clash detection in reality. and duplication of work and a lot of iterations occurs in BIM process. Thus, it takes quite a lot time to work. We studied how to improve the work efficiency by connecting API to business processes. Using the API in the integration process by automating repetitive tasks, reduce a significant amount of work time Using API (Automation, Optimization, Interoperability, Analysis) can solve the task problem that does not solved by the basic features, If we make good use of the combined API will be improved productivity.

Analysis the Design Attribution to Assess the Design Quality Based on Detailed Design (실시설계도면 기반 설계속성 도출 및 설계품질평가)

  • Yang, Ji Su;Kim, Yea Sang
    • Korean Journal of Construction Engineering and Management
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    • v.17 no.3
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    • pp.3-12
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    • 2016
  • Recently, construction industry shows active expansion in overseas construction market. But the active work limited in construction work, on the other hand, design-drawing work is evaluated shortage of competitive power. So this study aim to improve the competitive of 'domestic design-drawing work'thorough objective evaluation. Objective evaluation is consist of 'design attribution'. Design attribution is based on the execution drawing and complement by existing reasearch, expert interview. And then, list up the 'design attribution' evaluation list to carry out a survey targeting hands-on worker. Survey is consist of 'Likert 5-point scale, FMEA method'. As a result, construction company and design company show different opinions in both relative position evaluation and importance evaluation.

A Study on the Monitoring Technology for the Continuous Detection of Grinding Process (연삭 공정의 연속 진단을 위한 모니터링에 관한 연구)

  • 강재훈
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.8 no.1
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    • pp.74-80
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    • 1999
  • Recently, manufacturing work has been transformed to small scale production form with various types to act up to user's expectation from mass production with a little items required in the past. Then FMS using NC type machinaries has been applied actively also in domestic manufacturing line to meet thus tendency, but there are many machining troubles occured during work process not be settled yet. Nowdays high efficiently has been required no less than high precision in grinding work for the improvement of productivity. In this study, to represent more advance FMS can be adapted to thus situation In-process type monitoring method using AE and Current sensors is suggested to investigate the machining condition in grinding process. As results form this experimental study, it is recognized well that grinding conditions and dressing point of in time cab be estimated effectively using monitoring method suggested. Furthermore, surface shape of grinding wheel on voluntary point of in time can be predicted indirectly through the observation and comparison of AE signal waveform obtained as performance of continuous dressing work.

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The Provider-Role Consciusness of Married Working Women (취업주부의 부양자역할의식에 관한연구)

  • 옥선화
    • Journal of Families and Better Life
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    • v.11 no.1
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    • pp.134-148
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    • 1993
  • The study was designed to examine the present state of the provider-role consciousness of married working women in Korea and to identify five variable-clusters which were drawn from the theoretical perspectives. The subjects of this study were 573 married working women whose husbands also had their work. The statistical methods adopted for data analyses were frequencies. oneway ANOVA. Scheffe-test t-test, and multiple regression analysis. The major findings of this study can be summarized as follows; 1) The level of the provider-role consciousness of married working women was slightly high. 2) As for the aspects of the individual attribute variables. educational level job income age native area motive of work. and sex-role identity significantly influenced the provider-role consciousness of married working women. 3) Concerning the family background variables marriage duration number of children mother's experience of employment father's educational level and husbands's income were significantly related to the provider-role consciousness of married working women, 4) As for the social relationship variables. degree of participation in social associations significant others' attitudes toward housewife's work degree of domestic role sharing with husband and wife/husband income ration significantly affected the provider-role conscious-ness of married working women. Based on these findings it came to be revealed that multidirectional perspecitves were useful to identify variables which could predict the provider-role consciousness of married working women, Also it was revealed that the significant others' approvals for women's work were necessary to the establishment of the provider-role consciousness of married working women.

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An Empirical Approach Study on Construction Cost Estimation in Public Work Projects (공공사업 예정공사비에 대한 실증적 접근)

  • Yoo, Chang-Kyu;Song, Jeong-Gyu;Lee, Yun-Sun;Kim, Jae-Jun
    • Journal of the Korea Institute of Building Construction
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    • v.9 no.1
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    • pp.65-73
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    • 2009
  • Looking at current construction costs estimations of publicly declared public works, there are many instances where estimation criteria are ambiguous and doesn't imply the reality. Up to date, estimation criteria for calculating construction cost estimations are simply by unit area multiplication and stochastic construction cost estimation. However, possibility of making errors are high due to using uniform data that excludes each public work's specifications and environmental conditions. Further, on the aspect of cost management, there is certain limitation in the efficiency of cost management in order-placing stage and commencing-work stage; while efficient cost management and reduction of expenses are highly possible during initial stages of the project. In this respect, the paper adopts positive approach with regards to construction cost estimations of public works and draws common elements from calculation tables of the construction cost estimations from 3 completed domestic construction works; after which, the paper analyzes whether business exposition, construction guide and publicly-declared estimated construction costs that the orderer issued are calculated economically and properly; deducing problems in the process, the paper seeks to recommend rational calculation method on this.

Calculation of the Attached-Piping-Material Rate for the Building Mechanical-Service System in Office Buildings (사무소 건축물의 건축기계설비 배관 부속자재 요율 산출)

  • Park, Yool
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.29 no.4
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    • pp.185-194
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    • 2017
  • Currently, in comparison with other architectural estimations, the estimation work regarding building mechanical-service systems is time-consuming, and the process is continuously becoming more difficult because of the increased usage of the attached piping materials such as fittings and hangings in addition to their complicated construction processes. To improve this problem, the Korean authority provides a simple estimation method for the attached-material rate regarding the main piping material, which is the most time-consuming work in the architectural-mechanical estimation. However, to be an applicable method on construction sites, a proper conversion rate of the attached-piping material is still required for the proposed method regarding building usage and working types. Therefore, the purpose of this research is the calculation of the rate of the attached-piping materials such as the fittings and supports through the building of the mechanical-service work types of mechanical rooms, air conditioning, domestic water and hot-water supplies, and the drain-, vent-, and gas-piping work in office buildings that have been designed after 2010.