Examinations of Pump Impellers From Sodium and Fused Salt Pump Endurance Tests

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Examinations of three Inconel pump impellers were made to establish the extent of cavitation damage and degree of carburization sustained during pump endurance tests. The pumps, two of which circulated fluoride salt and one sodium, operated for the bulk of the test programs in the temperature range 1000 to 1250 deg F. Cavitation damage was manifested in each of the impellers by the formation of deep pits (in excess of 1/4-in.), the location of damaged areas varying with impeller geometry. Pit formation appeared to have occurred by uniform rather than preferential removal of metal components. Each of the impellers exhibited … continued below

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13 p.

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DeVan, J. H. April 10, 1961.

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Examinations of three Inconel pump impellers were made to establish the extent of cavitation damage and degree of carburization sustained during pump endurance tests. The pumps, two of which circulated fluoride salt and one sodium, operated for the bulk of the test programs in the temperature range 1000 to 1250 deg F. Cavitation damage was manifested in each of the impellers by the formation of deep pits (in excess of 1/4-in.), the location of damaged areas varying with impeller geometry. Pit formation appeared to have occurred by uniform rather than preferential removal of metal components. Each of the impellers exhibited heavily carburized zones along exposed surfaces. The cause of carburization may be associated with the type of gas purge utilized for these pumps. (auth)

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13 p.

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  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • April 10, 1961

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  • Sept. 16, 2016, 12:32 a.m.

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  • Dec. 21, 2020, 11:33 a.m.

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DeVan, J. H. Examinations of Pump Impellers From Sodium and Fused Salt Pump Endurance Tests, report, April 10, 1961; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc863520/: accessed October 2, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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