An analysis of activation and the impact of tritium breeding media and structural materials for a commercial tokamak fusion reactor design
Activation analysis has been conducted for several primary fusion blanket materials based on a model of a commercial tokamak fusion reactor design, STARFIRE. The blanket materials studied include two solid tritium breeders, viz., Li/sub 2/O and ..cap alpha..-LiAlO/sub 2/, and four candidate structural materials, viz., PCA stainless steel, V15Cr5Ti, Ti6Al4V, and Al-6063 alloys. The importance of breeder material activation is identified in terms of its impurity contents such as potassium, iron, nickel, molybdenum, and zirconium trace elements. The breeder activation is also discussed with regard to its potential for recycling and its impact on the lithium resource requirements. The structural material activation is analyzed based on two measures, volumetric radioactivity concentration and contact biological dose due to decay gamma emission. Using the radioactivity concentration measure, it is revealed that a substantial advantage exists from a viewpoint of radwaste management, which is inherent in fusion reactor designs based on potential low-activation alloys such as V15Cr5Ti, Ti6Al4V, and Al-6063. On the other hand, from the dose standpoint, the V15Cr5Ti alloy is found to be the only alloy for which one could realize a significant dose reduction (below 2.5 mrem/h) within about100 yr after shutdown, possibly by some extrapolation on alloy purification techniques.
- Research Organization:
- Argonne National Laboratory, Argonne, IL
- OSTI ID:
- 6185997
- Journal Information:
- Nucl. Technol./Fusion; (United States), Vol. 4:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BREEDING BLANKETS
ACTIVATION ANALYSIS
RADIOACTIVATION
STARFIRE TOKAMAK
THERMONUCLEAR REACTOR MATERIALS
ACTIVITY LEVELS
ALUMINATES
ALUMINIUM ALLOYS
BREEDING
CHROMIUM ALLOYS
IMPURITIES
LITHIUM COMPOUNDS
LITHIUM OXIDES
STAINLESS STEELS
TRITIUM
VANADIUM ALLOYS
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CHEMICAL ANALYSIS
CORROSION RESISTANT ALLOYS
HYDROGEN ISOTOPES
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
LIGHT NUCLEI
MATERIALS
NUCLEAR FUEL CONVERSION
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTOR COMPONENTS
STEELS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
YEARS LIVING RADIOISOTOPES
700201* - Fusion Power Plant Technology- Blanket Engineering
700209 - Fusion Power Plant Technology- Component Development & Materials Testing