Fringe isotope production [electronic resource]
Saved in:
| Online Access: |
Online Access |
|---|---|
| Corporate Authors: | , |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1958.
|
| Subjects: |
| Abstract: | The purpose of this work has been to determine the production rate of tritium in fringe Li-Al alloy columns with the degree of precision necessary for economic analyses of such reactor loadings. These results are provided for use in such an analysis. This experiment indicates the production rate of tritium in the outermost fringe tubes to be T = 0.0216 M{sub E} = 0.175 M{sub t} where T = grams of tritium per full length (67 pieces) charge of Li-Al alloy material; M{sub E} = MWD/adjacent ton of E metal; M{sub t} = MWD/adjacent tube of E metal. The above values should apply for fringe loads utilizing greater or smaller quantities of E metal; that is, for isotope production loadings which are over or under-compensated from a reactivity standpoint. In the actual test load it was calculated that one gram of tritium and 13.5 grams of Pu were made for each 21.3 grams of U-235 burned up. During the same time interval the displaced uranium loading would have generated 24.3 grams of Pu and burned up 29.9 grams of U-235. The factor which seems to limit the accuracy with which these data can be interpreted is the ratio of the activity of the cobalt pieces. This limitation is not due to the accuracy of the experimental determination of the ratios but due to the variation in the ratios which appears to exist. It can be seen that the ratio decreases from the bottom of the test load to the top and that the ratio decreases downstream (and presumably upstream) from the loading centerline. If the cause of this systematic variation can be found a correction might be applied. In the present analysis it was assumed that any large scale reactor loading would be subject to the same type of variations and that the average value from the test would approximate the average value for the larger loading. |
|---|---|
| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 11/11/1958. "hw--58102" "DE94017271" Bunch, W.L. |
| Physical Description: | 7 p. : digital, PDF file. |
| Type of Report and Period Covered Note: | Topical; |