Makovskiy S.V., Kuryndin A.V., Kirkin A.M., Sinegribov S.V.
Scientific and Engineering Centre for Nuclear and Radiation Safety, Moscow, Russia
The possibility of REMIX-fuel application is investigated at present time in Russian Federation. RE-MIX-fuel is based on mixture of uranium and plutonium, which are produced in the process of reprocessing of spent nuclear fuel. Application of such fuel type could possibly decrease consumption of natural uranium in thermal reactors and reduce accumulation of reactor-grade plutonium. Despite the advantages of such approach it is also necessary to pay attention to safety analysis of REMIX-fuel handling. In particular, in accordance with regulations of NP-061-05 it is necessary to ensure that spent nuclear fuel is stored as long as needed so that decay heat and radioactivity of this fuel make it possible to transport spent fuel from NPP site.
The results of radiation and heat characteristics of spent REMIX-fuel calculation with prevalent and accepted code SCALE 6 are presented. The evaluation of necessary spent fuel storage time and radiation dose rate behind the protection of cask TUK-13 with spent fuel is implemented. The comparison of derived characteristics of spent REMIX-fuel with analogical characteristics of spent uranium fuel is presented.
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