• Title/Summary/Keyword: 저장시설

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Radiation Shielding Analysis on The Spent Fuel Storage Facility for the Extended Fuel Cycle (장주기(長週期) 핵연료(核燃料) 저장시설(貯藏施設)에서의 방사선차폐해석(放射線遮蔽解析))

  • Lee, Tae-Young;Ha, Chung-Woo;Yook, Chong-Chul
    • Journal of Radiation Protection and Research
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    • v.9 no.2
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    • pp.90-96
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    • 1984

  • Estimated dose rates in spent fuel pool storage with the extended fuel cycle core management were reviewed and compared with design limit after calculation with the aid of DLC-23/CASK(22 n, 18 g) nuclear data and ANISN code. Radioactivity and gamma spectrum within spent fuel assemblies were calculated with ORIGEN code by extended fuel cycle model. In the calculation of dose rate, the fuel pool geometry was assumed to be infinite slab. Also, composition materials and radiation source within assemblies which are being stored in pool storage were assumed to be uniformly distributed throughout all the assemblies. As a result of culculation of dose rate from stored assemblies and waterborne radionuclides in pool water, the calculated dose rates appear to be lower than design basis limit under normal condition as well as abnormal condition.

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농업기술 - 시설감자, 온도와 토양수분관리 중요!

  • Jang, Dong-Chil;Park, Jong-Yun
    • 농업기술회보
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    • v.50 no.2
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    • pp.36-37
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    • 2013

  • 우리나라에서 감자는 거의 연중 생산되며, 최근 저온저장고 등의 산지유통시설이 보급되면서 홍수출하에 따른 가격폭락 현상이 줄어들고 있다. 특히 겨울철 시설감자는 재배하기 쉽고 단경기에 출하되기 때문에 소득 작목으로 크게 부각되고 있으며, 그 면적은 약 1.500ha에 이른다. 그러나 이상기상에 따른 저온피해, 동해, 일조부족 등은 시설감자 생산에 종종 피해를 주고 있으므로, 온도와 토양수분, 광도를 최적 상태로 유지하는 것은 시설감자 생산의 기본적인 요소이다.

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