In situ electrochemical characterization of grouted radioactive waste

Conference · Thu Apr 01 04:00:00 EST 1993

OSTI ID:10159385

Gu, Jingyan; Shen, Wu-Mian; Tomkiewicz, Micha ^[1]; Kruger, A A ^[2]

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1. Brooklyn Coll., NY (United States). Dept. of Physics
2. Westinghouse Hanford Co., Richland, WA (United States)

At the Hanford Site, twenty-eight double-shell tanks (DST) and one hundred and forty nine single-shell tanks (SST) are used for storage of radioactive liquid and sludge wastes and sat cake. A fundamental goal of the Westinghouse Hanford Company is to end the current storage practice for liquid wastes and to permanently dispose of the waste. The Hanford Defense Waste Environmental Impact Statement and subsequent record of decision has identified a cement-based waste form for disposal of DST low-level liquid waste. The low level radioactive fractions of these wastes will be immobilized in a cementitious grout at the Hanford Grout Processing Facility and disposed of in concrete vaults of the Grout Disposal Facility. Prior to closing each vault, postcuring verification will show that the final product meets the performance requirements. Any long term disposal system of radioactive waste will require monitoring to warn against structural deterioration and/or leach of the radioactive or hazardous components into the environment. We are investigating the possibility of monitoring the degree of immobilization of the waste by embedding a grid of long-lasting electrodes in grout. This work describes our ongoing attempts to understand the physics and chemistry of charge carriers in the grout under various load conditions.

• Research Organization: Westinghouse Hanford Co., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-87RL10930
• OSTI ID: 10159385
• Report Number(s): WHC-SA--1630; CONF-930906--9; ON: DE93014505
• Country of Publication: United States
• Language: English

Related Subjects

052001
052002
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360604
CLAYS
CORROSION, EROSION, AND DEGRADATION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FLY ASH
GROUTING
HANFORD RESERVATION
LEACHING
LOW-LEVEL RADIOACTIVE WASTES
MATHEMATICAL MODELS
PORTLAND CEMENT
RADIOACTIVE WASTE DISPOSAL
SALTS
STABILITY
WASTE DISPOSAL AND STORAGE
WASTE PROCESSING