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Title: Test Results for Caustic Demand Measurements on Tank 241-AX-101 and Tank 241-AX-103 Archive Samples

Caustic demand testing is used to determine the necessary amount of caustic required to neutralize species present in the Hanford tank waste and obtain a target molarity of free hydroxide for tank corrosion control. The presence and quantity of hydroxide-consuming analytes are just as important in determining the caustic demand as is the amount of free hydroxide present. No single data point can accurately predict whether a satisfactory hydroxide level is being met, as it is dependent on multiple factors (e.g., free hydroxide, buffers, amphoteric metal hydroxides, bicarbonate, etc.). This enclosure contains the caustic demand, scanning electron microscopy (SEM), polarized light microscopy (PLM), and X-ray diffraction (XRD) analysis for the tank 241-AX-101 (AX-101) and 241-AX-103 (AX-103) samples. The work was completed to fulfill a customer request outlined in the test plan, WRPS-1505529, “Test Plan and Procedure for Caustic Demand Testing on Tank 241-AX-101 and Tank 241-AX-103 Archive Samples.” The work results will provide a baseline to support planned retrieval of AX-101 and AX-103.
Authors:
 [1] ;  [1]
  1. Washington River Protection Solutions, Richland, WA (United States)
Publication Date:
OSTI Identifier:
1328008
Report Number(s):
WRPS--1602862 Rev. 0
TRN: US1700334
DOE Contract Number:
AC27-08RV14800
Resource Type:
Technical Report
Research Org:
Washington River Protection Solutions, Richland, WA (United States)
Sponsoring Org:
USDOE Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; HANFORD RESERVATION; SCANNING ELECTRON MICROSCOPY; X-RAY DIFFRACTION; TANKS; HYDROXIDES; DEMAND; VISIBLE RADIATION; CORROSION PROTECTION; TESTING; ACID CARBONATES; BUFFERS; RADIOACTIVE WASTES