Thermodynamic Modeling of the SRS Evaporators: Part III. Temperature, Evaporation, and Composition Effects on Process Control Strategy

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Accumulations of two solid phases (a nitrated aluminosilicate and sodium diuranate) formed scale deposits in the Savannah River Site (SRS) 2H Evaporator system. In Part I of this study, thermodynamically derived activity diagrams, also known as stability diagrams, were used on historic 2H feed tank (Tank 43) and drop Tank (Tank 38) chemistries in order to understand the effects of tank chemistry on solids formation in the 2H Evaporator. Evaluation of the 2F feed tank (Tank 26) and drop tank (Tank 46) chemistries evaluated in Part I of this study showed that the SRS 2F Evaporator system had not and ... continued below

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Jantzen, C.M. September 13, 2002.

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Description

Accumulations of two solid phases (a nitrated aluminosilicate and sodium diuranate) formed scale deposits in the Savannah River Site (SRS) 2H Evaporator system. In Part I of this study, thermodynamically derived activity diagrams, also known as stability diagrams, were used on historic 2H feed tank (Tank 43) and drop Tank (Tank 38) chemistries in order to understand the effects of tank chemistry on solids formation in the 2H Evaporator. Evaluation of the 2F feed tank (Tank 26) and drop tank (Tank 46) chemistries evaluated in Part I of this study showed that the SRS 2F Evaporator system had not and was not near saturation with respect to aluminosilicate scale. In order to ensure that similar deposits had not and were depositing in the SRS 3H Evaporator, a similar evaluation was performed specific to the feeds processed from Tank 32 (feed tank) and Tank 30 (drop tank) in Part II of this study.

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  • Other Information: PBD: 13 Sep 2002

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  • Report No.: WSRC-TR-2002-00318
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/801199 | External Link
  • Office of Scientific & Technical Information Report Number: 801199
  • Archival Resource Key: ark:/67531/metadc734053

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  • September 13, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 5, 2016, 5:35 p.m.

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Jantzen, C.M. Thermodynamic Modeling of the SRS Evaporators: Part III. Temperature, Evaporation, and Composition Effects on Process Control Strategy, report, September 13, 2002; South Carolina. (digital.library.unt.edu/ark:/67531/metadc734053/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.