Getter Incorporation into Cast Stone and Solid State Characterizations [electronic resource]
Washington River Protection Solutions (WRPS) is collecting relevant available data on waste forms for use as a supplemental immobilization technology, to provide the additional capacity needed to treat low-activity waste (LAW) in Hanford Site tanks and complete the tank waste cleanup mission in a ti...
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Online Access (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Getter Incorporation into Cast Stone and Solid State Characterizations |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Department of Energy. ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 2016. | ||
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| 500 | |a 09/28/2016. | ||
| 500 | |a "pnnl-25577 rev. 0" | ||
| 500 | |a "rpt-slaw-003 rev a" | ||
| 500 | |a "830403000" | ||
| 500 | |a Robert M. Asmussen; Amanda R. Lawter; John R. Stephenson; Mark E. Bowden; Nancy M. Washton; James J. Neeway; Yingge Du; Carolyn I. Pearce; Ray E. Clayton; Sarah A. Saslow; Edgar C. Buck; Elsa Cordova; Nikolla Qafoku. | ||
| 520 | 3 | |a Washington River Protection Solutions (WRPS) is collecting relevant available data on waste forms for use as a supplemental immobilization technology, to provide the additional capacity needed to treat low-activity waste (LAW) in Hanford Site tanks and complete the tank waste cleanup mission in a timely and cost-effective manner. One candidate supplemental waste form, fabricated using a low-temperature process, is a cementitious grout called Cast Stone. Cast Stone has been under investigation for this application at Pacific Northwest National Laboratory (PNNL) since initial screening tests in FY13. This report is the culmination of work to lower the diffusivities of Tc and I from Cast Stone using getters. Getters are compounds added to a system designed to selectively sequester a species of interest to provide increased stability to the species. The work contained within this report is related to waste form development and testing, and does not directly support the 2017 integrated disposal facility (IDF) performance assessment. However, this work contains valuable information which may be used in performance assessment maintenance past FY17, and in future waste form development. This report on performance characterization of Tc and I getters in Cast Stone fabricated with simulated LAW covers several areas of interest and major findings to WRPS: investigating performance of potassium metal sulfide (KMS-2-SS) and tin (II) apatite (Sn-A) as Tc getters when incorporated into Cast Stone; investigating performance of silver exchanged zeolite (Ag-Z) and argentite (Arg) as I getters when incorporated into Cast Stone; utilizing sequential addition of Tc and I getters to overcome any deleterious interactions between the getters in solution; determining, for the first time, Tc distribution within the cured Cast Stone and its evolution during leaching; and performing solid state characterization of getters and Cast Stone samples to support leach test findings and develop a mechanistic understanding of the processes that control Tc and I release into solution. | |
| 536 | |b AC05-76RL01830. | ||
| 650 | 7 | |a Waste Forms. |2 local. | |
| 650 | 7 | |a Getters. |2 local. | |
| 650 | 7 | |a Tanks. |2 local. | |
| 650 | 7 | |a Temperature Range 0273-0400 K. |2 local. | |
| 650 | 7 | |a Performance. |2 local. | |
| 650 | 7 | |a Hanford Reservation. |2 local. | |
| 650 | 7 | |a Low-Level Radioactive Wastes. |2 local. | |
| 650 | 7 | |a Radioactive Waste Processing. |2 local. | |
| 650 | 7 | |a Diffusion. |2 local. | |
| 650 | 7 | |a Grouting. |2 local. | |
| 650 | 7 | |a Simulation. |2 local. | |
| 650 | 7 | |a Remedial Action. |2 local. | |
| 650 | 7 | |a Immobilization. |2 local. | |
| 650 | 7 | |a Management Of Radioactive And Non-Radioactive Wastes From Nuclear Facilities. |2 edbsc. | |
| 710 | 2 | |a Pacific Northwest National Laboratory (U.S.). |4 res. | |
| 710 | 1 | |a United States. |b Department of Energy. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
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