• Title/Summary/Keyword: 관 파괴

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Destructive Examination of 3 Cycle Burned 14$\times$14 PWR Fuel (삼주기연소 14$\times$14 PWR 핵연료의 핫셀 파괴시험)

  • 이기순;유길성;이영길;민덕기;서항석
    • Nuclear Engineering and Technology
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    • v.21 no.4
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    • pp.332-340
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    • 1989

  • Destructive examination of 14$\times$14 PWR fuel burned for 3 cycles are carried out to investigate the in-reactor fuel performance. The results obtained are as follows; 1) Grain growth is not occured at the fuel center. 2) Fuel density is decreased as the turnup increase, the density is down to 94.4% TD at burnup of 36,000 MWD/MTU. 3) Average thickness of oxide layer on cladding is less than 10 $\mu$m in the lower and middle section, while it is rapidly increased above 20 $\mu$m in the upper section. 4) The rate of hydride production in the cladding is large in the upper section than lower section and is related to the production of oxide on the cladding

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