Increased fuel burn up in a CANDU thorium reactor using weapon grade plutonium

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dc.authorid0000-0003-2844-8061
dc.authorid0000-0002-5756-4216
dc.contributor.authorSahin, Somer
dc.contributor.authorYildiz, Kadir
dc.contributor.authorSahin, Haci Mehmet
dc.contributor.authorSahin, Necmettin
dc.contributor.authorAcir, Adem
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2006
dc.departmentNiğde ÖHÜ
dc.description.abstractWeapon grade plutonium is used as a booster fissile fuel material in the form of mixed ThO2/PuO2 fuel in a Canada Deuterium Uranium (CANDU) fuel bundle in order to assure the initial criticality at startup. Two different fuel compositions have been used: (1) 97% thoria (ThO2) + 3PuO(2) and (2) 92% ThO2 + 5% UO2 + 3% PuO2. The latter is used to denaturize the new U-233 fuel with U-238. The temporal variation of the criticality k(infinity) and the burn-up values of the reactor have been calculated by full power operation for a period of 20 years. The criticality starts by k infinity = similar to 1.48 for both fuel compositions. A sharp decrease of the criticality has been observed in the first year as a consequence of rapid plutonium burnout. The criticality becomes quasi constant after the second year and remains above k infinity > 1.06 for similar to 20 years. After the second year, the CANDU reactor begins to operate practically as a thorium burner. Very high burn up could be achieved with the same fuel material (up to 500,000 (MWD)-D-./T), provided that the fuel rod claddings would be replaced periodically (after every 50,000 or 100,000 MW.D/T). The reactor criticality will be sufficient until a great fraction of the thorium fuel is burnt up. This would reduce fuel fabrication costs and nuclear waste mass for final disposal per unit energy drastically. (c) 2006 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.nucengdes.2006.01.014
dc.identifier.endpage1788
dc.identifier.issn0029-5493
dc.identifier.issn1872-759X
dc.identifier.issue17
dc.identifier.scopus2-s2.0-33745191383
dc.identifier.scopusqualityQ1
dc.identifier.startpage1778
dc.identifier.urihttps://dx.doi.org/10.1016/j.nucengdes.2006.01.014
dc.identifier.urihttps://hdl.handle.net/11480/5491
dc.identifier.volume236
dc.identifier.wosWOS:000238925600004
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCIENCE SA
dc.relation.ispartofNUCLEAR ENGINEERING AND DESIGN
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleIncreased fuel burn up in a CANDU thorium reactor using weapon grade plutonium
dc.typeArticle

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