In-Pile Performance of Hana Cladding Tested in Halden Reactor

Kim, Hyung-Il; Park, Jeong-Yong; Jeong, Yong-Jin; Koo, Yang-Hyun; Yoo, Jong-Sung; Mok, Yong-Kyoon; Kim, Yoon-Ho; Suh, Jung-Min

doi:10.5516/net.07.2013.093

Cited by 13 publications

(1 citation statement)

References 16 publications

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“…Corresponding hoop stress at this pressure is about 178 MPa with thin wall assumption. When we consider a yield stress of typical zirconium alloy available from elsewhere [30,31], the calculated hoop stress is lower than the yield stress. A stress-induced creep rate of zirconium alloy cladding may be enhanced by additional stress combined with neutron irradiation.…”

Section: Rod Internal Pressurementioning

confidence: 99%

Gas releases and rod internal pressure of BN-added UO₂fuel

Jeong

Yang

2015

Journal of Nuclear Science and Technology

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Gadolinium (Gd), in the form of gadolinia (Gd 2 O 3 ), has been used as integral burnable absorber to UO 2 fuel by different companies. Recently, alternative burnable absorber materials are under investigation. In this paper, the results of the study on the use of boron mixed in UO 2 as an integral burnable absorber are presented. Boron nitride was selected as the form of B to be added to UO 2 fuel based on the stability of B during sintering. Fuel performance analysis code FRAPCON-UNI, which is based on FRAPCON code and has the modifications for boron and helium generation and gasses release models, was used for the calculation of fuel performance. Helium generation was calculated using a model and the result was verified against ORIGEN calculation results. Gas release calculation was based on Forsberg Massih model and different characteristics of the gasses were considered. Power histories of maximum burnup rods (B rod, no B rod, and Gd rod) were selected from reactor physics data. The results indicated significant increases in rod internal pressure by 500 ppm boron addition at the end of life with minimum influence of a grain boundary boron fraction due to high diffusivity of helium and nitrogen.

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Section: Rod Internal Pressurementioning

confidence: 99%