• 제목/요약/키워드: Research Equipment

검색결과 5,725건 처리시간 0.046초

Survivability assessment of Viton in safety-related equipment under simulated severe accident environments

  • Ryu, Kyungha;Song, Inyoung;Lee, Taehyun;Lee, Sanghyuk;Kim, Youngjoong;Kim, Ji Hyun
    • Nuclear Engineering and Technology
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    • 제50권5호
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    • pp.683-689
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    • 2018
  • To evaluate equipment survivability of the polymer Viton, used in sealing materials, the effects of its thermal degradation were investigated in severe accident (SA) environment in a nuclear power plant. Viton specimens were prepared and thermally degraded at different SA temperature profiles. Changes in mechanical properties at different temperature profiles in different SA states were investigated. The thermal lag analysis was performed at calculated convective heat transfer conditions to predict the exposure temperature of the polymer inside the safety-related equipment. The polymer that was thermally degraded at postaccident states exhibited the highest change in its mechanical properties, such as tensile strength and elongation.

초고층 골조공사의 통합 장비 운영을 위한 장비 간의 간섭요소 분석 (Analysis of Interference Elements for the Integrated Equipment Operation in Tall Building Construction)

  • 이동윤;임현수;김백중;조훈희;강경인
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.173-175
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    • 2013
  • In tall building construction, the equipment operation plans have an effect on productivity. Equipment, used in tall building construction, has operating plans of each it and restrictively operate owing to the first placed equipment operation. Therefore the interference of equipment was occur frequently. As it, the productivity is less effective and the construction delay occurs. This research was analysis the interference elements between the equipment for constructing the efficient equipment associated operational processes. The interference elements between the equipment derive through expert advice and analysis using IPA. Through the IPA, this research deducted the interference elements located 'Concentrate Here' which is the highest importance and the lowest performance.

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컨테이너터미널의 하역시스템 장비조합에 대한 분석 (A Study on Analysis of the Equipment Combination of Stevedoring System in Port Container Terminal)

  • 양창호;최용석;하태영
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2004년도 추계학술대회
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    • pp.289-295
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    • 2004
  • 본 연구의 목적은 컨테이너터미널의 하역시스템 장비조합을 분석하는 것이다. 일반적으로 컨테이너터미널의 생산성은 안벽에서 컨테이너크레인의 생산성에 의해 평가되고 있으나 이송차량과 야드크레인과 같은 다른 장비도 있다. 그러므로 컨테이너 터미널에서 하역시스템의 최적장비조합을 추정할 수 있는 방법이 요구된다. 다양한 시뮬레이션 실험을 수행하고 생산성 향상을 위한 장비조합을 분석한다. 사례연구의 적용으로부터 장비조합에 따른 평균대기시간비율을 사용하여 절감효과를 설명하였다.

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건축물에 시설되는 수변전설비의 지진 대책에 대한 조사 분석 (Analysis of earthquake countermeasure for electrical facility at building)

  • 김기현;이상익;전현재;배석명
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2008년도 추계학술대회 논문집
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    • pp.359-362
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    • 2008
  • Middle domestic the occurrence size which stews recently from the Korean Peninsula circumference country is augmenting on a large scale about earthquake about safe countermeasure part from the existing Natural Countermeasure Law 2008. Refers with the Earthquake Disaster Countermeasure Law to be new standard contents establishment by law and strengthened in March. Consequently the research is propelled about electric equipment earthquake-proof plan and countermeasure. The present paper investigated an equipment by domestic facility present condition about the change disappointment electric equipment which can supply all the member in the building an investigation analysis about problem point and improvement fact. Also about overseas electric equipment investigated about earthquake-proof plan relation system and facility present condition. Investigated the electric equipment earthquake-proof plan pertinent data which is advanced from like this existing nation and the equipment and application direction must apply to domestic presented. With character presents following the guide about electric equipment earthquake-proof plan becomes feed with the fact that will be able to use.

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MEASUREMENT OF OPERATIONAL ACTIVITY FOR NONROAD DIESEL CONSTRUCTION EQUIPMENT

  • HUAI T.;SHAH S. D.;DURBIN T. D.;NORBECK J. M.
    • International Journal of Automotive Technology
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    • 제6권4호
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    • pp.333-340
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    • 2005
  • In order to better quantify the contribution from nonroad sources to emission inventories, it is important to understand not only the emissions rates of these engines but also activity patterns that can be used to accurately portray their in-use operation. To date, however, very little information is available on the actual activity patterns of nonroad equipment. In this study, a total of 18 pieces of nonroad equipment were instrumented with collected data including intake manifold air pressure (MAP), exhaust temperature and, on a subset of vehicles, engine rpm and throttle position. The equipment included backhoes, compactors, dozers, motor graders, loaders and scrappers used in applications such as landfilling, street maintenance and general roadwork. The activity patterns varied considerably depending on the type of equipment and the application. Daily equipment operating time ranged from less than 30 minutes to more than 8 hours, with landfill equipment having the highest daily use. The number of engine starts per day ranged from 3-11 lover the fleet with an average of 5 starts per day. The average percent idle time for the fleet was approximately $25\%$ with a range from 11 to $65\%$ for individual pieces of equipment. Duty cycles based on exhaust temperature/throttle position profiles were also developed for two graders and one dozer.

GIS기법을 이용한 일사량 모델링 (Insolation Modeling Using by GIS)

  • 김병우;강인준;김상석;곽재하
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2010년 춘계학술발표회 논문집
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    • pp.359-361
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    • 2010
  • This research is thing about location choice of solar power generation equipment to increase efficiency of solar power generation equipment. In the case of current solar power generation equipment, location of large scale solar power generation equipment facilities choice or, have localized in small scale equipment by individual. This research uses various climatic elements of small scale area for efficient location choice of solar power generation facilities and quantity of solar radiation did back-tracking.

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