EXAMINATION OF URANIUM FROM THE FIRST CORE OF THE EBR-I. Final Report- Program 6.1.10
The changes due to neutron irradiation which occurred in the highly enriched uranium fuel slugs of the first core of the EBR-I were related to burnup (0 to 0.3 at.%) and to temperature (285 to 395 deg C). Initially, the slugs increased in length with increase in burnup, but at higher burnups the direction of growth reversed itself, and the slugs tended to shrink to less than their original lengths. Temperature became an important factor at the higher levels of burnup in that the ratio of length change to burnup decreased with increasing temperatare. Diameter changes were the inverse of the changes in length. Density decreased almost linearly with burnup and was not affected by temperatare. Hardness increased with increasing burnup but the rate of increase decreased both with increasing burnup and temperature. (auth)
- Research Organization:
- Argonne National Lab., Ill.
- DOE Contract Number:
- W-31109-ENG-38
- NSA Number:
- NSA-16-001231
- OSTI ID:
- 4832587
- Report Number(s):
- ANL-6113
- Country of Publication:
- United States
- Language:
- English
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