SEDL / STP / STP306-EB / STP44386S

Effects of Burnup on Certain Ceramic Fuel Materials

Bleiberg, M L
Bettis Atomic Power Laboratory, Pittsburgh, Pa.

Yeniscavich, W
Bettis Atomic Power Laboratory, Pittsburgh, Pa.

Gray, R G
Bettis Atomic Power Laboratory, Pittsburgh, Pa.

Pages: 22    Published: Jan 1962

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Abstract

The effect of irradiation in pressurized hot water loops on bulk UO², UO² dispersed in BeO, and UO² dispersed in Al²O³ are compared. It is shown that when UO² is irradiated to high exposures, the material increases in volume, and increased amounts of fission gases are released. In addition to this effect in BeO and Al²O³, swelling occurs due to fission fragment destruction of the matrix phase. The parameters influencing this behavior are discussed.