Application of CANDLE burnup to block-type high temperature gas cooled reactor

Ohoka, Yasunori; Sekimoto, Hiroshi

doi:10.1016/j.nucengdes.2003.12.001

Cited by 26 publications

(10 citation statements)

References 6 publications

(7 reference statements)

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“…In this study CANDLE (Sekimoto, 2001;Sekimoto, 2003 and2004) burn-up strategy is slightly modified by introducing discreet regions. In this design the reactor cores are subdivided into several parts with the same volume in the axial directions.…”

Section: Design Conceptmentioning

confidence: 99%

Optimization of Small Pb-Bi Cooled Modified CANDLE Burnup based Long Life Fast Reactors

Su’ud

Aprianti

et al. 2012

ijp

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In this study optimization of modified CANDLE burnup scheme based long life Pb-Bi Cooled Fast Reactors with natural Uranium as Fuel Cycle Input for small long life reactors has been performed. In this design the reactor cores are subdivided into several parts with the same volume in the axial directions. The natural uranium is initially put in region 1, after one cycle of 10 years of burn-up it is shifted to region 2 and the region 1 is filled by fresh natural uranium fuel. This concept is basically applied to all regions, i.e. shifted the core of I’th region into I+1 region after the end of 10 years burn-up cycle. In this paper we discuss the characteristics of several designs of small long life Pb-Bi cooled fast reactors with modified CANDLE burn-up scheme. Four power levels of 250MWt, 400MWt, 600MWt, and 800MWt were investigated. For 250MWt and 400MWt cores we employed 67.5% high fuel volume fraction nitride fuels with large pin diameter of 1.35 cm while for 600and 800MWt cores we employed 60% fuel volume fraction nitride fuel with 1.2 cm pin diameter. The results show that all cores show similar trend in k-eff pattern change, k-inf pattern change, conversion ratio pattern change, and U-238 and Pu-239 atomic density pattern changes. Maximum discharged burn-up is in the range of 26-33%HM, while peak power density is in the range of 340-410 W/cc.

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Section: Design Conceptmentioning

confidence: 99%

Optimization of Small Pb-Bi Cooled Modified CANDLE Burnup based Long Life Fast Reactors

Su’ud

Aprianti

et al. 2012

ijp

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“…In this case CANDLE burn-up strategy [9][10][11][12][13][14] is slightly modified by introducing discreet regions. In this design the reactor cores are subdivided into several parts with the same volume in the axial directions.…”

Section: Design Conceptmentioning

confidence: 99%

“…Modular Pb-Bi Cooled Fast Reactor Based on Modified CANDLE Burn-up Scheme is a type of nuclear power reactors which after started for operation then just need natural uranium supply to continue its operation [10][11][12][13][14][15][16][17]. This reactor core is subdivided into several regions with equal volume and during its operation the fuel is accumulated in each region by conversion of U-238 into plutonium.…”

Section: Introductionmentioning

confidence: 99%

Design Study of Small Pb-Bi Cooled Modified Candle Reactors

Su’ud¹,

Sekimoto²

2010

AIP Conference Proceedings

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In this study application of modified CANDLE burnup scheme based long life Pb-Bi Cooled Fast Reactors for small long life reactors with natural Uranium as Fuel Cycle Input has been performed. The reactor cores are subdivided into several parts with the same volume in the axial directions. The natural uranium is initially put in region 1, after one cycle of 10 years of burn-up it is shifted to region 2, and 10 years after that it is shifted to region 3. This concept is applied to all regions, i.e. shifted the core of I'th region into I+1 region after the end of 10 years burn-up cycle. The first region 1 is filled by fresh natural uranium fuel. Compared to the previous works, in a smaller reactor core the criticality need to be considered more carefully especially at the beginning of life. As an optimized design, a core of 85 cm radius and 150 cm height with 300 MWt power are selected. This core can be operated 10 years without refueling or fuel shuffling. The average discharge burn-up is 350GWd/ton HM.

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“…In this study, conceptual design GCFR with Helium coolant which can be continuously operated by supplying mixed Natural Uranium/Thorium without fuel enrichment plant or fuel reprocessing plant. The CANDLE (Constant Axial shape of Neutron flux, nuclide densities and power shape During Life of Energy producing reactor) burn-up strategy can be applied to several reactors, when the infinite neutron multiplication factor of fuel element of the reactor changes along burn-up as the followings [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…In this design the reactor cores are subdivided into several parts with the same volume in the axial directions. The previous study shows that Modified CANDLE concept was successfully applicable to long-life fast reactor with Natural Uranium as fuel cycle input [10][11][12][13][14][15][16][17]. This technology allows for the reactor which has been operating, furthermore we only need to supply Natural Uranium fuel.…”

Section: Introductionmentioning

confidence: 99%