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Title: Final Report of Tank 241-C-105 Dissolution, the Phase 2 Study

Abstract

Three clamshell grab samples were taken from Tank 241-C-105 in October 2015 in accordance with RPP-PLAN-60011. Analytical results of those samples were issued in the report RPP-RPT-59115 by Wastren Advantage, Inc., Hanford Laboratory. Solid phase characterization results were reported separately in LAB-RPT-15-00011 and in RPP-RPT-59147. The major solid phases reported to be present were dawsonite [NaAlCO 3(OH) 2], trona [Na 3(HCO 3)(CO 3)·2H 2O], cejkaite [Na 4(UO 2)(CO 3) 3], and an unidentified organic solid, with minor amounts of gibbsite [Al(OH) 3], natrophosphate [Na 7F(PO 4) 2·19H 2O], and traces of unidentified iron-rich and manganese-rich phases. Note that the presence of dawsonite, trona, and cejkaite requires a relatively low pH, likely around pH 9 to 10. One aliquot of each grab sample was provided to 222-S Laboratory Process Chemistry for dissolution studies. Phase 1 of the dissolution testing followed the approved test plan, WRPS-1404813, Rev. 3, and examined the behavior of the Tank 241-C-105 solids treated with water, 19M sodium hydroxide, 2M nitric acid, and 0.5M oxalic acid/2M nitric acid. Phase 2 of the testing was conducted in accordance with instructions from the client and emphasized treatment with 19M sodium hydroxide followed by water washing. This is the report ofmore » the Phase 2 testing.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
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  1. Washington River Protection Solutions LLC., Richland, WA (United States)
Publication Date:
Research Org.:
Hanford Site (HNF), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM)
OSTI Identifier:
1338967
Report Number(s):
RPP-RPT-59700 Rev. 0
TRN: US1701466
DOE Contract Number:
AC27-08RV14800
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; HANFORD RESERVATION; TANKS; SAMPLING; SODIUM HYDROXIDES; DISSOLUTION; CARBONATE MINERALS; WATER; TESTING; PHOSPHATE MINERALS; WASHING

Citation Formats

Meznarich, Huei K., bolling, Stacey D., Cooke, Gary A., Ely, Thomas M., Herting, Daniel L., Lachut, James S., and LaMothe, Margaret E. Final Report of Tank 241-C-105 Dissolution, the Phase 2 Study. United States: N. p., 2016. Web. doi:10.2172/1338967.
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Meznarich, Huei K., bolling, Stacey D., Cooke, Gary A., Ely, Thomas M., Herting, Daniel L., Lachut, James S., & LaMothe, Margaret E. Final Report of Tank 241-C-105 Dissolution, the Phase 2 Study. United States. doi:10.2172/1338967.
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Meznarich, Huei K., bolling, Stacey D., Cooke, Gary A., Ely, Thomas M., Herting, Daniel L., Lachut, James S., and LaMothe, Margaret E. Sat . "Final Report of Tank 241-C-105 Dissolution, the Phase 2 Study". United States. doi:10.2172/1338967. https://www.osti.gov/servlets/purl/1338967.
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@article{osti_1338967,
title = {Final Report of Tank 241-C-105 Dissolution, the Phase 2 Study},
author = {Meznarich, Huei K. and bolling, Stacey D. and Cooke, Gary A. and Ely, Thomas M. and Herting, Daniel L. and Lachut, James S. and LaMothe, Margaret E.},
abstractNote = {Three clamshell grab samples were taken from Tank 241-C-105 in October 2015 in accordance with RPP-PLAN-60011. Analytical results of those samples were issued in the report RPP-RPT-59115 by Wastren Advantage, Inc., Hanford Laboratory. Solid phase characterization results were reported separately in LAB-RPT-15-00011 and in RPP-RPT-59147. The major solid phases reported to be present were dawsonite [NaAlCO3(OH)2], trona [Na3(HCO3)(CO3)·2H2O], cejkaite [Na4(UO2)(CO3)3], and an unidentified organic solid, with minor amounts of gibbsite [Al(OH)3], natrophosphate [Na7F(PO4)2·19H2O], and traces of unidentified iron-rich and manganese-rich phases. Note that the presence of dawsonite, trona, and cejkaite requires a relatively low pH, likely around pH 9 to 10. One aliquot of each grab sample was provided to 222-S Laboratory Process Chemistry for dissolution studies. Phase 1 of the dissolution testing followed the approved test plan, WRPS-1404813, Rev. 3, and examined the behavior of the Tank 241-C-105 solids treated with water, 19M sodium hydroxide, 2M nitric acid, and 0.5M oxalic acid/2M nitric acid. Phase 2 of the testing was conducted in accordance with instructions from the client and emphasized treatment with 19M sodium hydroxide followed by water washing. This is the report of the Phase 2 testing.},
doi = {10.2172/1338967},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 2016},
month = {Sat Oct 01 00:00:00 EDT 2016}
}
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Technical Report:
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DOI:  10.2172/1338967
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  • ; ;
    The solid phase characterization (SPC) of three grab samples from single-shell Tank 241-C-105 (C-105) that were received at the laboratory the week of October 26, 2015, has been completed. The three samples were received and broken down in the 11A hot cells.

  • ; ;
    This report describes results of the analyses of tank-headspace samples taken from the Hanford waste Tank 241-C-105 (referred to as Tank C-105). Pacific Northwest Laboratory (PNL) contracted with Westinghouse Hanford Company (WHC) to provide sampling devices and to analyze inorganic and organic analytes collected from the tank headspace. For organic analyses, six SUMMA{trademark} canisters were delivered to WHC on COC 0061 11 on 2/14/94. At the request of WHC, an additional six SUMMA{trademark} canisters were supplied on COC 005127 on 2/16/94. Samples were collected by WHC from the headspace of Tank C-105 through the VSS on 2/16/94, but only threemore » SUMMA{sup {trademark}} canisters were returned to PNL using COC 0061 11 on 2/18/94. The canisters were stored in the 326/23B laboratory at ambient (25{degrees}C) temperature until the time of the analysis. Analyses described in this report were performed at PNL in the 300 area of the Hanford Reservation. Analytical methods that were used are described in the text. In summary, sorbent traps for inorganic analyses containing sample materials were either weighed (for water analysis) or desorbed with the appropriate aqueous solutions. The aqueous extracts were analyzed either by selective electrode or by ion chromatography (IC). Organic analyses were performed using cryogenic preconcentration followed by gas chromatography/mass spectrometry (GC/MS).« less

  • The purpose of this calculation is to determine the molar fraction of oxalic acid in the vapor phase. This calculation will be used to assist the materials compatibility assessment for equipment that will be exposed to the oxalic acid vapor.

  • This document provides an evaluation of the criticality safety of oxalic acid dissolution to remove residual waste from Tank 241-C-106 and transfer to Tank 241-AN-106. Limits and controls for the activity are provided.

  • The Defense Nuclear Facilities Safety Board has advised the DOE to concentrate the near-term sampling and analysis activities on identification and resolution of safety issues. The data quality objective (DQO) process was chosen as a tool to be used to identify the sampling and analytical needs for the resolution of safety issues. Tank C-105 was on the Higher Heat Load Watch List. However, it is presently classified as a non-Watch List low heat load tank and is monitored weekly. This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, and WHC 222-S Laboratory.more » The scope of this plan is to provide guidance for the sampling and analysis of samples from Tank 241-C-105.« less