• 제목/요약/키워드: DUPIC fuel

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A Simple Model for RAM Analysis and Its Application to DUPIC Fuel Fabrication Facility

  • Ko, Won-Il;Park, Jong-Won;Lee, Jae-Sol;Park, Hyun-Soo
    • 한국원자력학회:학술대회논문집
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    • 한국원자력학회 1996년도 춘계학술발표회논문집(2)
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    • pp.505-510
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    • 1996

  • A simple model for RAM (Reliability, Availability and Maintainability) analysis and its computer code are developed for application to DUPIC fuel fabrication system. The approach is obtained by linking the allocation model (top-down method) to bottom-up method for RAM analysis. As a result, the availability requirement of subsystem, as well as the buffer storage requirement between processes, are evaluated for the DUPIC facility..

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EFFECT OF IMPURITIES ON THE MICROSTRUCTURE OF DUPIC FUEL PELLETS USING THE SIMFUEL TECHNIQUE

  • Park, Geun-Il;Lee, Jae-Won;Lee, Jung-Won;Lee, Young-Woo;Song, Kee-Chan
    • Nuclear Engineering and Technology
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    • 제40권3호
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    • pp.191-198
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    • 2008

  • The influence of fission products' contents on the DUPIC fuel powder and pellet properties was experimentally evaluated using SIMFUEL as a surrogate for actual spent PWR fuel due to the high radioactivity of spent fuel. Pure $UO_2$ and SIMFUEL pellets with fission products equivalent to a burn-up of 35,000 MWd/tU and 60,000 MWd/tU were used as impurities in this study. The specific surface area of the powder milled after the OREOX treatment increased and resulted in sintered pellets with a theoretical density (TD) higher than 95%, regardless of the impurity contents. However, the grain size of the sintered pellets decreased with the increasing impurity contents. As a result of the dissolved oxides in $UO_2$ from the impurity groups, the specific surface area of the OREOX powder increased with an increase of the impurities. The grain size of the sintered pellets was significantly decreased by the metallic and oxide precipitates.

  • https://doi.org/10.5516/NET.2008.40.3.191 인용 PDF KSCI