Coolant void worth in fast breeder reactors and accelerator-driven transuranium and minor-actinide burners
2004 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 31, no 15, 1783-1801 p.Article in journal (Refereed) Published
Liquid metal coolant void worth have been calculated as a function of fuel composition and core geometry for several model fast breeder reactors and accelerator-driven systems (ADSs). The Monte Carlo transport code MCNP with continuous energy cross-section libraries was used for this study. With respect to the core void worth, lead/bismuth cooled FBR, appear to be inferior to those employing sodium for pitch-to-diameter ratios exceeding 1.4. It is shown that in reactor systems cooled by lead/bismuth eutectic radial steel pin reflector significantly lowers the void worth. The void worth proves to be a strong function of the fuel composition, reactor cores with high content of minor actinides in fuel exhibiting larger void reactivities than systems with plutonium based fuel. Enlarging the lattice pitch in ADS burners operating on Pu rich fuel decreases the void worth while the opposite fact is true for ADSs employing americium based fuels.
Place, publisher, year, edition, pages
2004. Vol. 31, no 15, 1783-1801 p.
IdentifiersURN: urn:nbn:se:kth:diva-23646DOI: 10.1016/j.anucene.2004.05.005ISI: 000223284100005ScopusID: 2-s2.0-3142694262OAI: oai:DiVA.org:kth-23646DiVA: diva2:342345
QC 20100525 QC 201109222010-08-102010-08-102016-04-22Bibliographically approved