Argonne National Laboratory
Reduced Enrichment for Research and Test Reactors
Nuclear Science and Engineering Division at Argonne
U.S. Department of Energy

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Abstracts and Available Papers Presented at the
1999 International RERTR Meeting


Asmedi Suripto, Soedyartomo Soentono and Iyos R. Subki
National Nuclear Energy Agency
Email: [email protected]

Gadjah Mada University

Gerard L. Hofman
Argonne National Laboratory
Illinois, USA


An experiment to prepare higher density fuel based on uranium silicide using excess uranium has been carried out. The weight percentage of uranium in the melt was chosen to exceed that of U in U3Si2 thus resulting in an ingot density of approximately 15.5 Mg/m3. The melt of uranium and silicon was quenched and the ingot so obtained was pulverized and fabricated into fuel plates with aluminum powder as the matrix material and with aluminum alloy as the cladding material. Excess uranium metallic is known to have poor behaviour under irradiation. However, when suitable heat treatment is applied to the fuel plates this uranium will react with the aluminum matrix to form irradiation-stable UAlx. The formation of UAlx from the excess uranium and aluminum matrix has been found to take place at hot-rolling temperatures of fuel plates, i.e., in between 450 and 550C, for an extended period of heating time. The higher the annealing temperature, the shorter the annealing time required for reaction. By ultimately having UAlx in the meat of the fuel plates, replacing the metallic uranium, one can get rid of the undesirable irradiation behaviour of uranium while achieving the purpose of having higher uranium loading in the fuel plates. A simple calculation considering the amount of matrix material available for alloying reaction with free uranium in the dispersion shows that a dispersion fuel meat using this new fuel can reach a loading density between 6 and 7 MgU/m3.

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Asmedi Suripto
National Atomic Energy Agency - BATAN
P2T BDM BATAN, Puspiptek
Serpong 15310, Indonesia

Phone: 62 21 756 0915
Fax: 62 21 756 0909
E-mail: [email protected]

2016 RERTR Meeting

The 2016 International RERTR Meeting (RERTR-2016) will take place in Belgium. Stay tuned for further details.

2015 RERTR Meeting

The 2015 International RERTR Meeting (RERTR-2015) took place in Seoul, Korea on Oct. 11-14, 2015.
For more information visit RERTR-2015.


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Last modified on July 29, 2008 11:33 +0200