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Title: Chemical Composition Analysis and Product Consistency Tests of the ORP Phase 6 Nepheline Study Glasses

Abstract

In this report, Savannah River National Laboratory (SRNL) provides chemical analyses and Product Consistency Test (PCT) results for a series of simulated high-level waste (HLW) glass compositions fabricated at Pacific Northwest National Laboratory (PNNL). The results of this effort will improve the ability to predict the impacts of glass composition and nepheline crystallization on the durability of HLW glasses. Chemical analyses were performed on a representative sample of each of the quenched glasses to allow for comparisons with the targeted compositions. A review of the individual glass composition measurements identified no analytical issues of concern. Minor differences between the targeted and measured concentrations of some of the baseline glass components were noted, including some high values for Fe 2O 3, and some low values for Al 2O 3, Li 2O, Na 2O and P 2O 5. The PCT Method-A was performed in triplicate on each of the quenched and canister centerline cooled (CCC) versions of the glasses to assess chemical durability. A review of the leachate analyses and standard solution data identified no issues with the analytical methods. Some of the CCC versions of the study glasses have normalized concentration for boron (NC B) values that are higher than themore » Environmental Assessment glass benchmark NC B value of 16.695 g/L. For some of the study glasses, the NC B values were higher after the CCC heat treatment. The normalized concentrations for lithium and sodium (NC Li and NC Na) followed this same trend. For many of these glasses, the changes in the normalized concentration for silicon (NC Si) values were not congruent with the changes in NC B, NC Li, and NC Na values. It may be valuable for PNNL to perform a more complete review of the influence of composition and heat treatment on the PCT responses of the glasses described in this report to draw further conclusions, including any potential correlations with the methods used in selecting these glass compositions for study.« less

Authors:
 [1];  [1];  [1];  [1]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1490313
Report Number(s):
SRNL-STI-2018-00645
DOE Contract Number:  
AC09-08SR22470
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Fox, K. M., Edwards, T. B., Hsieh, M. C., and Riley, W. T. Chemical Composition Analysis and Product Consistency Tests of the ORP Phase 6 Nepheline Study Glasses. United States: N. p., 2019. Web. doi:10.2172/1490313.
Fox, K. M., Edwards, T. B., Hsieh, M. C., & Riley, W. T. Chemical Composition Analysis and Product Consistency Tests of the ORP Phase 6 Nepheline Study Glasses. United States. doi:10.2172/1490313.
Fox, K. M., Edwards, T. B., Hsieh, M. C., and Riley, W. T. Wed . "Chemical Composition Analysis and Product Consistency Tests of the ORP Phase 6 Nepheline Study Glasses". United States. doi:10.2172/1490313. https://www.osti.gov/servlets/purl/1490313.
@article{osti_1490313,
title = {Chemical Composition Analysis and Product Consistency Tests of the ORP Phase 6 Nepheline Study Glasses},
author = {Fox, K. M. and Edwards, T. B. and Hsieh, M. C. and Riley, W. T.},
abstractNote = {In this report, Savannah River National Laboratory (SRNL) provides chemical analyses and Product Consistency Test (PCT) results for a series of simulated high-level waste (HLW) glass compositions fabricated at Pacific Northwest National Laboratory (PNNL). The results of this effort will improve the ability to predict the impacts of glass composition and nepheline crystallization on the durability of HLW glasses. Chemical analyses were performed on a representative sample of each of the quenched glasses to allow for comparisons with the targeted compositions. A review of the individual glass composition measurements identified no analytical issues of concern. Minor differences between the targeted and measured concentrations of some of the baseline glass components were noted, including some high values for Fe2O3, and some low values for Al2O3, Li2O, Na2O and P2O5. The PCT Method-A was performed in triplicate on each of the quenched and canister centerline cooled (CCC) versions of the glasses to assess chemical durability. A review of the leachate analyses and standard solution data identified no issues with the analytical methods. Some of the CCC versions of the study glasses have normalized concentration for boron (NCB) values that are higher than the Environmental Assessment glass benchmark NCB value of 16.695 g/L. For some of the study glasses, the NCB values were higher after the CCC heat treatment. The normalized concentrations for lithium and sodium (NCLi and NCNa) followed this same trend. For many of these glasses, the changes in the normalized concentration for silicon (NCSi) values were not congruent with the changes in NCB, NCLi, and NCNa values. It may be valuable for PNNL to perform a more complete review of the influence of composition and heat treatment on the PCT responses of the glasses described in this report to draw further conclusions, including any potential correlations with the methods used in selecting these glass compositions for study.},
doi = {10.2172/1490313},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

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