Analysis and Results of a Hydrogen-Moderated Isotope Production Assembly in the Fast Flux Test Facility
| Autor: | D.W. Wootan, H.R. Brager, L.L. Carter, R.E. Schenter, J.A. Rawlins |
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| Rok vydání: | 1989 |
| Předmět: | |
| Zdroj: | Nuclear Science and Engineering. 103:150-156 |
| ISSN: | 1943-748X 0029-5639 |
| Popis: | This paper reports on a cobalt test assembly containing yttrium hydride pins for neutron moderation irradiated in the Fast Flux Test Facility (FFTF) during cycle 9A for 137.7 equivalent full-power days at a power level of 291 MW. The 36 test pins consisted of a batch of 32 pins containing cobalt metal used to produce {sup 60}Co and a set of four pins with europium oxide to produce {sup 153}Gd, a radioisotope used in detection of the bone disease osteoporosis. Postirradiation examination of the cobalt pins determined the {sup 60}Co production to be predictable to an accuracy of {approximately} 5%. The measured {sup 60}Co spatially distributed concentrations were within 20% of the calculated concentrations. The assembly average {sup 60}Co measured activity was 4% less than the calculated value. The europium oxide pins were gamma scanned for the europium isotopes {sup 152}Eu and {sup 154}Eu to an absolute accuracy of {approx equal} 10%. The measured europium radioisotope and {sup 153}Gd concentrations were within 20% of calculated values. The hydride assembly performed well and is an excellent vehicle for many FFTF isotope production applications. The results also demonstrate the accuracy of the calculational methods developed by the Westinghouse Hanford Company for predictingmore » isotope production rates in this type of assembly.« less |
| Databáze: | OpenAIRE |
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