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KMID : 0371819960280050500
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Nuclear Engineering and Technology
1996 Volume.28 No. 5 p.500 ~ p.505
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Design on SDS2 On-line Poison concentration Monitoring in CNADU
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Seog Nam Kim
Ho Chang Jung/Sung Kim/Ji Hyeon Kim/and Sang Joon Han
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Abstract
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At the reference plant(Wolsong unit No. 1) a manual poison sampling system is provided to periodically sample gadolinium from each tank and analyze it in the laboratory to provide assurance that adequate poison concentration in each tank is maintained. The AECB required a continuous, on-line monitoring system. On Wolsong unit No. 2, process piping adapter and new instrument loops added to the Liquid Injection Shutdown System(LISS) which is part of SDS2. The new instrument loops continuously monitor SDS2 poison conductivity and initiate an alarm when the poison concentration is too low.
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