Dilute chemical decontamination program. Quarterly report 2, January-March 1978
Effects of reagent concentration, pH, temperature, and reducing agents on the dissolution rate of BWR out-of-core oxide films in the three candidate reagents were evaluated. Preliminary dissolution tests with BWR fuel deposits indicate that 0.01 M EDTA, NTA, and citric acid with 0.01 M ascorbic acid are capable of dissolving greater than 70% of the oxide film in less than 10 hours. The rate in 0.01 M oxalic acid is slightly slower. Equilibria for the distribution of Fe/sup +3/, Fe/sup +2/, and Co/sup +2/ between solutions of oxalic acid, EDTA, and NTA, and cation and anion resins indicate that oxalic acid and NTA systems can be regenerated; while EDTA systems cannot be regenerated. Ferric ion significantly reduces the adsorption rate of all reagents. The adsorption rate for the EDTA and oxalate complexes can be accelerated by decreasing the ratio of cation to anion resin. It appears that the oxalate system will require the smallest quantity of resin for total removal, with the NTA and EDTA systems requiring 30 to 60% more resin. The crystal structure of the Brunswick-2 and Monticello fuel deposits was essentially 100% ..cap alpha..Fe/sub 2/O/sub 3/. The fuel deposits from Brunswick-2 and Monticello were determined to consist of particles of two different sizes. The preliminary Dresden-2 materials survey of the reactor pressure vessel and recirculation system was completed. This survey was utilized to prepare the materials list for the corrosion test plan. 28 figures, 7 tables.
- Research Organization:
- General Electric Co., Pleasanton, CA (USA). Vallecitos Nuclear Center
- DOE Contract Number:
- AC02-76ET34203
- OSTI ID:
- 5354243
- Report Number(s):
- COO-2985-23; NEDC-12705-2
- Country of Publication:
- United States
- Language:
- English
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Dilute chemical decontamination program. Semi-annual report (quarters 6 and 7), January 1-June 30, 1979
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Related Subjects
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
AMINO ACIDS
ASCORBIC ACID
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BRUNSWICK-2 REACTOR
BWR TYPE REACTORS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHELATING AGENTS
CITRIC ACID
CLEANING
COBALT 60
COBALT ISOTOPES
DECONTAMINATION
DICARBOXYLIC ACIDS
DISSOLUTION
DRESDEN-2 REACTOR
EDTA
ENERGY SOURCES
ENRICHED URANIUM REACTORS
FILMS
FUELS
HYDROXY ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ION EXCHANGE MATERIALS
IRON COMPOUNDS
IRON OXIDES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
MONTICELLO REACTOR
NTA
NUCLEAR FUELS
NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXALIC ACID
OXIDES
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
POWER REACTORS
RADIOACTIVITY TRANSPORT
RADIOISOTOPES
REACTOR MATERIALS
REACTORS
REGENERATION
RESINS
THERMAL REACTORS
TRANSITION ELEMENT COMPOUNDS
VITAMINS
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES