A fast reactor core concept using an internal blanket
Journal Article
·
· Nucl. Technol.; (United States)
OSTI ID:6816444
A new core concept using an internal blanket, which is one type of heterogeneous core, has been developed. The core employs a disk-shaped internal blanket at the axial central region of the core. This internal blanket extends radially all the way through the core to the external blanket and is arranged so that its thickness is greater in the radial inner core region than the outer core region. It is designated as a ''hamburger'' core concept. Neutronics calculations for the equilibrium burnup cycle of 2500-MW(thermal) oxide-fueled liquid-metal fast breeder reactors exhibit the following advantages for the hamburger core over the corresponding conventional two enrichment zone homogeneous one: Breeding gain (breeding ratio = 1.0) increases by 5 to 7%, and the reactor doubling time decreases by about 10%. Burnup reactivity depression is reduced by about 30%. Power peaking factor and the power swing of fuel assemblies during burnup are almost the same. Sodium void reactivity for the inner core region (including the internal blanket) is reduced by about 25%. Total fuel cycle cost is almost the same.
- Research Organization:
- Energy Research Laboratory, Hitachi Ltd. 1168 Moriyama-cho, Hitachi, Ibaraki 316
- OSTI ID:
- 6816444
- Journal Information:
- Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 55:3; ISSN NUTYB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
ALKALI METALS
BREEDER REACTORS
BREEDING BLANKETS
BREEDING RATIO
BURNUP
COMPARATIVE EVALUATIONS
CONFIGURATION
CONVERSION RATIO
COST BENEFIT ANALYSIS
DESIGN
ELEMENTS
EPITHERMAL REACTORS
EQUILIBRIUM
FAST REACTORS
FBR TYPE REACTORS
FUEL ASSEMBLIES
FUEL CYCLE
HETEROGENEOUS EFFECTS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
METALS
POWER FACTOR
REACTIVITY
REACTIVITY COEFFICIENTS
REACTOR COMPONENTS
REACTOR CORES
REACTORS
SODIUM
VOID COEFFICIENT
210500* -- Power Reactors
Breeding
ALKALI METALS
BREEDER REACTORS
BREEDING BLANKETS
BREEDING RATIO
BURNUP
COMPARATIVE EVALUATIONS
CONFIGURATION
CONVERSION RATIO
COST BENEFIT ANALYSIS
DESIGN
ELEMENTS
EPITHERMAL REACTORS
EQUILIBRIUM
FAST REACTORS
FBR TYPE REACTORS
FUEL ASSEMBLIES
FUEL CYCLE
HETEROGENEOUS EFFECTS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
METALS
POWER FACTOR
REACTIVITY
REACTIVITY COEFFICIENTS
REACTOR COMPONENTS
REACTOR CORES
REACTORS
SODIUM
VOID COEFFICIENT