| Autor: |
McDonald, M. J., Carson, S. D., Naranjo, G. E., Wemple, J. A. |
| Zdroj: |
Industrial & Engineering Chemistry Research; September 5, 2000, Vol. 39 Issue: 9 p3146-3150, 5p |
| Abstrakt: |
Sandia National Laboratories (SNL) has produced limited quantities of fission-produced molybdenum-99 (99Mo) within industry purity specifications using the Cintichem production process. Molybdenum-99 is produced by the irradiation of a target which has an electrochemically deposited layer of enriched uranium oxide. The Cintichem processing method involves the dissolving the uranium coating from the target, chemically extracting the 99Mo from the other fission products, and purifying the product by column chromatography. The chemical extraction and purification of 99Mo was performed using remote manipulators in the SNL Hot Cell Facility (HCF). To thoroughly understand the production process, two series of tests were designed: the first was a series of cold tests using 20 g samples of a depleted or low-irradiated uranium dioxide (UO2) powder and the second was conducted using irradiated targets coated with ~25 g of enriched uranium oxide. In addition, testing of radiation effects was performed at the SNL Gamma Irradiation Facility on chemicals and hardware used in the processing to evaluate the degradation due to the high radiation field expected during the chemical separation. Unique production hardware, fixtures, and tools were developed to facilitate remote processing of irradiated targets at the HCF. |
| Databáze: |
Supplemental Index |
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