• Title/Summary/Keyword: 영광

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Fishery Resources off Youngkwang II. Species Composition of Catch by a Otter Trawl (서해 영광 연안 수산자원 II. Otter Trawl 어획자원의 종조성)

  • HWANG Sun Do;IM Yang Jae;SONG Hong In;CHOI Yong Suk;MOON Hyung Tae
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.31 no.5
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    • pp.739-748
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    • 1998

  • Demersal fishery resources were collected by an otter trawl in May, August and November 1996 at 9 stations off Youngkwang. And they were compared with the data obtained by a stow net, Of 73 species identified, assemblages were consisted of $63.0\%$ in fish, $14\%$ in shrimps, $14\%$ in crabs, $5\%$ in cephalopods and $3\%$ in gastropods. Johnius grypotus, Palaemon gravieri, Crangon hakodatei, Cynoglossus joyneri, Collichthys niveatus predominated in abundance, consisting of $64.4\%$ in the number of individuals. Catch by an otter trawl consisted mainly of demersal fishery resources, while catch by a stow net consisted mainly of pelagic fishery resources.

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YGN 3 & 4 Reactor Flow Model Test (영광 3, 4호기 원자로 유동 모델 시험)

  • Lee, Kye-Bock;Im, In-Young;Lee, Byung-Jin;Kuh, Jung-Eui
    • Nuclear Engineering and Technology
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    • v.23 no.3
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    • pp.340-351
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    • 1991

  • Experimental studies were conducted on a l/5.03 scale reactor flow model of the Yong-gwang Nuclear Units 3 and 4. The purpose of the flow model test was to estimate the hydraulic effect in the reactor vessel due to the relative size difference between the ABB-CE's System 80 and the YGN 3&4 reactors. The flow model was designed according to the principle of similarity. Obtained from the test were the core inlet flow distribution, the core exit pressure deviations, and the segmental and overall pressure losses across the flow path from the reactor vessel inlet to outlet nozzle. These data will be used to provide input data for the core thermal margin analysis and to verify the analytical hydraulic design method.

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