Abstracts and Available Papers Presented at the
2005 International RERTR Meeting

THE IRRADIATION TEST AND PRELIMINARY PIE RESULTS OF LOW ENRICHMENT U-MO PIN-TYPE FUEL

A.L. Izhutov, V.V. Alexandrov, N.G. Gataullin, A.Ye. Novoselov,
V.A. Starkov, G.V. Shevlyakov, А.А. Sheldyakov and V.Yu. Shishin
State Scientific Centre of Russian Federation
Research Institute of Atomic Reactors
433510, Dimitrovgrad, Ulyanovsk region, Russia

and

I.V. Dobrikova, А.V. Vatulin, G.V. Kulakov and А.V. Morozov
State Scientific Centre of Russian Federation
A.A.Bochvar All-Russian Scientific Research Institute of Inorganic Materials
123060, Moscow, P. B. 369, Russia

ABSTRACT

In February 2005 in the MIR reactor the irradiation tests of LEU U-Mo pin-type mini fuel elements fabricated at the Bochvar Institute were completed within the framework of collaboration with ANL under RERTR program.

The fuel element cross-section represents a 2.98×2.98 mm square, cladding material is aluminum alloy SAV-1, height of the fuel element active part is ≤ 200 mm, uranium volume density in the fuel composition is ~ 4 and ~ 6 g/сm³. Totally, 71 undersized pin-type fuel elements were tested including 13 different modifications that differed in the fuel composition characteristics. To obtain data on the fuel behavior at different burnups, several mini fuel element groups were irradiated up to different burnup values ranging from ~ 20% to ~ 70% of ²³⁵U burnup.

This paper presents the main irradiation tests and PIE results that have been obtained by now.

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