A comparison of measured radionuclide release rates from Three Mile Island Unit-2 core debris for different oxygen chemical potentials

Journal Article · Sun Mar 01 00:00:00 EST 1987 · Nucl. Technol.; (United States)

OSTI ID:6614683

Baston, V F; Hofstetter, K J; Ryan, R F

Chemical and radiochemical analyses of reactor coolant samples taken during defueling of the Three Mile Island Unit-2 (TMI-2) reactor provide relevant data to assist in understanding the solution chemistry of the radionuclides retained within the TMI-2 reactor coolant system. Hydrogen peroxide was added to various plant systems to provide disinfection for microbial contamination and has provided the opportunity to observe radionuclide release under different oxygen chemical potentials. A comparison of the radionuclide release rates with and without hydrogen peroxide has been made for these separate but related cases, i.e., the fuel transfer canal and connecting spent-fuel pool A with the TMI-2 reactor plenum in the fuel transfer canal, core debris grab sample laboratory experiments, and the reactor vessel fluid and associated core debris. Correlation and comparison of these data indicate a physical parameter dependence (surface-to-volume ratio) affecting all radionuclide release; however, selected radionuclides also demonstrate a chemical dependence release under the different oxygen chemical potentials. Chemical and radiochemical analyses of reactor coolant samples taken during defueling of the Three Mile Island Unit-2 (TMI-2) reactor provide relevant data to assist in understanding the solution chemistry of the radionuclides retained within the TMI-2 reactor coolant system.

• Research Organization: Physical Sciences Inc., P.O. Box 1536, Sun Valley, ID 83353
• OSTI ID: 6614683
• Journal Information: Nucl. Technol.; (United States), Vol. 76:3
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
COOLANTS
FISSION PRODUCT RELEASE
COMPARATIVE EVALUATIONS
DISINFECTANTS
FISSION PRODUCTS
CHEMICAL OXYGEN DEMAND
OXYGEN POTENTIAL
THREE MILE ISLAND-2 REACTOR
FUEL ASSEMBLY DISMANTLING
BENCH-SCALE EXPERIMENTS
CONTAMINATION
FUEL POOLS
HYDROGEN PEROXIDE
MICROORGANISMS
RADIONUCLIDE MIGRATION
REACTOR CORES
REACTOR SAFETY
REACTOR VESSELS
SAMPLING
CONTAINERS
ENERGY
ENRICHED URANIUM REACTORS
ENVIRONMENTAL TRANSPORT
FREE ENTHALPY
GERMICIDES
HYDROGEN COMPOUNDS
ISOTOPES
MASS TRANSFER
MATERIALS
OXYGEN COMPOUNDS
PEROXIDES
PHYSICAL PROPERTIES
POWER REACTORS
PWR TYPE REACTORS
RADIOACTIVE MATERIALS
REACTOR COMPONENTS
REACTORS
SAFETY
THERMAL REACTORS
THERMODYNAMIC PROPERTIES
WATER COOLED REACTORS
WATER MODERATED REACTORS
220502* - Nuclear Reactor Technology- Environmental Aspects- Radioactive Effluents
210200 - Power Reactors
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220900 - Nuclear Reactor Technology- Reactor Safety