Breeder-in-tube design for a helium-cooled Li sub 2 O tokamak blanket
Of the solid breeder designs considered in the Blanket Comparison and Selection Study (BCSS), the lithium oxide breeder with helium coolant and ferritic steel (HT-9) structural material received the highest overall ranking for both tokamak and tandem mirror systems in terms of engineering, economics, safety, and R D requirements. The BCSS blanket surrounding the fusion plasma consists of a number of thin breeder plates externally cooled by flowing helium and internally purged of tritium by a separate helium stream. A detailed review of this design indicated that significant improvements would be realized in the areas of tritium breeding, blanket thickness, blanket energy multiplication, power-conversion efficiency, breeder temperature window, and geometrical integrity of the coolant and purge paths by using a neutron multiplier (beryllium), a higher temperature structural material (vanadium-based alloy), and a tube geometry. The neutronics, thermal-hydraulics, tritium recovery, and structural performance characteristics of this innovative solid breeder design are discussed in this paper. 2 refs., 1 tab.
- OSTI ID:
- 6860697
- Report Number(s):
- CONF-860610--Summs.
- Journal Information:
- Transactions of the American Nuclear Society; (USA), Journal Name: Transactions of the American Nuclear Society; (USA) Vol. 52; ISSN TANSA; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700201* -- Fusion Power Plant Technology-- Blanket Engineering
ALKALI METAL COMPOUNDS
ALKALINE EARTH METALS
ALLOYS
BERYLLIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BREEDING BLANKETS
BREEDING RATIO
CHALCOGENIDES
CHROMIUM ALLOYS
CONVERSION RATIO
COOLING SYSTEMS
DESIGN
ELEMENTS
ENERGY SYSTEMS
FLUID MECHANICS
FLUIDS
GASES
HELIUM
HYDRAULICS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
LITHIUM COMPOUNDS
LITHIUM OXIDES
MECHANICS
METALS
MULTIPLICATION FACTORS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POWER DENSITY
RADIATION TRANSPORT
RADIOISOTOPES
RARE GASES
REACTOR COMPONENTS
RECOVERY
THERMONUCLEAR REACTOR COOLING SYSTEMS
THERMONUCLEAR REACTORS
TITANIUM ALLOYS
TOKAMAK TYPE REACTORS
TRITIUM
TRITIUM RECOVERY
TUBES
VANADIUM ALLOYS
VANADIUM BASE ALLOYS
WALL LOADING
YEARS LIVING RADIOISOTOPES