Decrease of the CANDU spent nuclear waste inventories in fusion-fission (hybrid) reactors
Journal Article
·
· International Journal of Energy-Environment-Economics
OSTI ID:404426
- Gazi Univ., Ankara (Turkey). Teknik Egitim Faueltesi
- Erciyes Univ., Kayseri (Turkey). Muehendislik Fakueltesi
The possibility of spent nuclear fuel rejuvenation in fusion reactors is investigated for both (D,T) and catalyzed (D,D) modes. The analysis is conducted for a CANDU spent nuclear fuel which was used up to a total enrichment grade of 0.418%. The behavior of the spent fuel is observed during 48 months for discrete time intervals of {Delta}t = 6 months. The cooling of the fissile fuel zone is considered with three different coolants, notably gas (preferably He), Flibe (Li{sub 2}BeF{sub 4}) and natural lithium. A rejuvenation period of 8 months is evaluated for a final fissile fuel enrichment grade of 1% for all coolant types in the fissile zone under a first-wall fusion neutron current load of 1,014 (2.45-MeV n/cm{sup 2}.s) and 1,014 (14.1-MeV n/cm{sup 2}.x), corresponding to 2.64 MW/m{sup 2} by a plant factor of 75% for the catalyzed (D,D) fusion reactor mode. The rejuvenation period increases to 12 months for the same fissile fuel enrichment grade using the (D,T) fusion reactor mode under a first-wall fusion neutron current load of 1,014 (2.45-MeV n/cm{sup 2}.s), corresponding to 2.25 MW/m{sup 2} by a plant factor of 75%. This enrichment would be sufficient for a re-utilization in a CANDU reactor.
- OSTI ID:
- 404426
- Journal Information:
- International Journal of Energy-Environment-Economics, Journal Name: International Journal of Energy-Environment-Economics Journal Issue: 1 Vol. 4; ISSN IJEEEJ; ISSN 1054-853X
- Country of Publication:
- United States
- Language:
- English
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