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Title: Thermal properties of simulated Hanford waste glasses

Abstract

The Hanford Tank Waste Treatment and Immobilization Plant (WTP) will vitrify the mixed hazardous wastes generated from 45 years of plutonium production. The molten glasses will be poured into stainless steel containers or canisters and subsequently quenched for storage and disposal. Such highly energy-consuming processes require precise thermal properties of materials for appropriate facility design and operations. Key thermal properties (heat capacity, thermal diffusivity, and thermal conductivity) of representative high-level and low-activity waste glasses were studied as functions of temperature in the range of 200 to 800°C (relevant to the cooling process), implementing simultaneous differential scanning calorimetry-thermal gravimetry (DSC-TGA), Xe-flash diffusivity, pycnometry, and dilatometry. The study showed that simultaneous DSC-TGA would be a reliable method to obtain heat capacity of various glasses at the temperature of interest. Accurate thermal properties from this study were shown to provide a more realistic guideline for capacity and time constraint of heat removal process, in comparison to the design basis conservative engineering estimates. The estimates, though useful for design in the absence measured physical properties, can now be supplanted and the measured thermal properties can be used in design verification activities.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2]
+ Show Author Affiliations
  1. Pacific Northwest National Laboratory, Richland Washington USA
  2. U.S. Department of Energy, Office of River Protection, Richland Washington
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1372986
Report Number(s):
PNNL-SA-115965
Journal ID: ISSN 0002-7820; 830403000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 100; Journal Issue: 6; Journal ID: ISSN 0002-7820
Publisher:
American Ceramic Society
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; Nuclear waste glasses; Cooling process; Heat capacity; Heat conductivity

Citation Formats

Rodriguez, Carmen P., Chun, Jaehun, Crum, Jarrod V., Canfield, Nathan L., Rönnebro, Ewa C. E., Vienna, John D., and Kruger, Albert A. Thermal properties of simulated Hanford waste glasses. United States: N. p., 2017. Web. doi:10.1111/jace.14786.
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Rodriguez, Carmen P., Chun, Jaehun, Crum, Jarrod V., Canfield, Nathan L., Rönnebro, Ewa C. E., Vienna, John D., & Kruger, Albert A. Thermal properties of simulated Hanford waste glasses. United States. doi:10.1111/jace.14786.
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Rodriguez, Carmen P., Chun, Jaehun, Crum, Jarrod V., Canfield, Nathan L., Rönnebro, Ewa C. E., Vienna, John D., and Kruger, Albert A. Mon . "Thermal properties of simulated Hanford waste glasses". United States. doi:10.1111/jace.14786.
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@article{osti_1372986,
title = {Thermal properties of simulated Hanford waste glasses},
author = {Rodriguez, Carmen P. and Chun, Jaehun and Crum, Jarrod V. and Canfield, Nathan L. and Rönnebro, Ewa C. E. and Vienna, John D. and Kruger, Albert A.},
abstractNote = {The Hanford Tank Waste Treatment and Immobilization Plant (WTP) will vitrify the mixed hazardous wastes generated from 45 years of plutonium production. The molten glasses will be poured into stainless steel containers or canisters and subsequently quenched for storage and disposal. Such highly energy-consuming processes require precise thermal properties of materials for appropriate facility design and operations. Key thermal properties (heat capacity, thermal diffusivity, and thermal conductivity) of representative high-level and low-activity waste glasses were studied as functions of temperature in the range of 200 to 800°C (relevant to the cooling process), implementing simultaneous differential scanning calorimetry-thermal gravimetry (DSC-TGA), Xe-flash diffusivity, pycnometry, and dilatometry. The study showed that simultaneous DSC-TGA would be a reliable method to obtain heat capacity of various glasses at the temperature of interest. Accurate thermal properties from this study were shown to provide a more realistic guideline for capacity and time constraint of heat removal process, in comparison to the design basis conservative engineering estimates. The estimates, though useful for design in the absence measured physical properties, can now be supplanted and the measured thermal properties can be used in design verification activities.},
doi = {10.1111/jace.14786},
journal = {Journal of the American Ceramic Society},
issn = {0002-7820},
number = 6,
volume = 100,
place = {United States},
year = {2017},
month = {3}
}
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Journal Article:
DOI:  10.1111/jace.14786
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Works referenced in this record:

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