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Thulium oxide fuel characterization study (thulium-170 fueled capsule parametric design)

Description: A doubly encapsulated thulia wafer, i.e., individually lined wafers stacked one upon another inside a fuel capsule was studied. The temperature profiles were determined for thulia power densities ranging from 8 to 24 W/cc and fuel capsule surface temperatures ranging from 1000/sup 0/F (538/sup 0/C) to 2000/sup 0/F (1093/sup 0/C). Parametric studies were also carried out on a singly encapsulated configuration in which the thulia wafers were stacked face to face in an infinitely long, lined cylinder. The doubly encapsulated wafer configuration yielded a lower centerline temperature than the singly encapsulated capsule. Only in extreme cases of a large wafer diameter in combination with a high thulia power density did the fuel capsule centerline temperature exceed the thulia melt temperature of 4172/sup 0/F (2300/sup 0/C). Results are also given for the maximum radius attainable without having centerline melting when using a thulia microsphere fuel form.
Date: October 1, 1968
Creator: DesChamps, N.H.
Partner: UNT Libraries Government Documents Department

Thulium oxide fuel characterization study: Thulium-170 fueled capsule parametric design

Description: An analytical parametric study was made of an infinitely long, cylindrical fuel capsule containing thulia (Tm/sub 2//sup 170/O/sub 3/) encapsulated in two different physical forms and in two different liner configurations. Diameters of wafers maintained at 0.060 inch thickness were varied between 0.6 and 3.0 inches. Radial temperature profiles were determined for thulia power densities ranging from 8 to 24 W/cc and fuel capsule surface temperatures ranging from 1000 to 2732/sup 0/F. Hastelloy-X, Haynes-25, T-222, tungsten, platinum and molybdenum are the liner materials investigated. Methods of calculation, (including computer codes), assumptions used, error analyses and results are presented and discussed.
Date: June 24, 1970
Creator: DesChamps, N.H.; Fink, C.R. & Nelson, C.A.
Partner: UNT Libraries Government Documents Department

Thulium oxide fuel characterization study: Thulium-170 fueled capsule parametric design

Description: An analytical parametric study was made of an infinitely long, cylindrical fuel capsule containing thulia (Tm/sub 2//sup 170/o/sub 3/) encapsulated in two different physical forms and in two different liner configurations. Diameters of wafers maintained at 0.060 inch thickness were varied between 0.6 and 3.0 inches. Radial temperature profiles were determined for thulia power densities ranging from 8 to 24 w/cc and fuel capsule surface temperatures ranging from 1000 to 2732/sup 0/F. Hastelloy X, Haynes 25, T-222, tungsten, platinum and molybdenum are the liner materials investigated. Methods of calculation, (including computer codes), assumptions used, error analyses and results are presented and discussed.
Date: November 1, 1969
Creator: DesChamps, N.H.; Fink, C.R. & Nelson, C.A.
Partner: UNT Libraries Government Documents Department