Two 90UC--10ZrC fueled converters, IC-13 of Mark VI configuration and IC- C3 of Mark VIIB configuration, were examined in hot cell after in-pile operation. IC-3 operated for 4395 hours at an average emitter temperature of 1675 deg C as a converter test and then for 2945 hours at an average emitter temperature of ~1500 deg C as a fuel irradiation test; the average fuel burnup achieved was 2.5 x 10/ sup 20/ fission/c.c. IC-C3 operated 5445 hours at an average emitter temperature of 1670 deg C as a converter test; the average fuel burnup achieved was 5 x 10/ sup …
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Two 90UC--10ZrC fueled converters, IC-13 of Mark VI configuration and IC- C3 of Mark VIIB configuration, were examined in hot cell after in-pile operation. IC-3 operated for 4395 hours at an average emitter temperature of 1675 deg C as a converter test and then for 2945 hours at an average emitter temperature of ~1500 deg C as a fuel irradiation test; the average fuel burnup achieved was 2.5 x 10/ sup 20/ fission/c.c. IC-C3 operated 5445 hours at an average emitter temperature of 1670 deg C as a converter test; the average fuel burnup achieved was 5 x 10/ sup 19/ fission/c.c. The carbide fuel contained 4 wt % tungsten and had a C/U atom ratio of 1.05. Other unique features for the converter components were fluoride tungsten claddings of controlled fluorine contents (18 ppM for IC-I3 and 19 ppM for IC-C3), and the presence of a high temperature seal and a graphite sorption cesium reservoir in IC-C3 converter. The results obtained on fuel swelling, emitter deformation, fuel-cladding interaction and microstructures of various converter components are presented. Solutions to the problem areas encountered are recommended. (auth)
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Yang, L.; Horner, M. H. & Cochran, F. L.Post-operational examinations of two carbide-fueled in-pile converters,
report,
September 30, 1970;
United States.
(https://digital.library.unt.edu/ark:/67531/metadc1019687/:
accessed April 25, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.
