Process improvement studies for the Submerged Demineralizer System (SDS) at the Three Mile Island Nuclear Power Station, Unit 2

Technical Report · Sat May 01 04:00:00 EDT 1982

DOI:https://doi.org/10.2172/5364604· OSTI ID:5364604

Campbell, D. O.; Collins, E. D.; King, L. J.; Knauer, J. B.

Tests were made to investigate flowsheet modifications which might improve the expected performance of the reference Submerged Demineralizer System (SDS) flowsheet for decontaminating the high-activity-level water at the Three Mile Island Nuclear Power Station, Unit 2. The tests included one series designed to show the effects of aging time, temperature, and pH on reduction of the concentrations of residual /sup 137/Cs and /sup 90/Sr, and a second series designed to evaluate the physical sorption of /sup 125/Sb on silica gel or other inorganic sorbents. Results of the tests indicated that the most promising method for reducing /sup 137/Cs and /sup 90/Sr concentrations below 10/sup -4/ ..mu..Ci/mL is to age the effluent water from the zeolite columns for at least 2 h at 75/sup 0/C prior to its passage through another zeolite column. Sorption of the /sup 125/Sb on silica gel or other inorganic sorbents did not show sufficient promise to be considered for practical use. A previously identified method for removal of /sup 125/Sb requires deionization of the water by removal of the sodium on a cation exchange resin prior to sorption of /sup 125/Sb on anion exchange resin; however, this method would generate a relatively large amount of low-activity-level solid waste (ion exchange resin).

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5364604
• Report Number(s): ORNL/TM-7756; ON: DE82014568
• Country of Publication: United States
• Language: English

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ACCIDENTS
ADSORBENTS
AGING
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANTIMONY 125
ANTIMONY ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 137
CESIUM ISOTOPES
CLEANING
DECONTAMINATION
DEMINERALIZATION
DEMINERALIZERS
DIAGRAMS
ENRICHED URANIUM REACTORS
EVEN-EVEN NUCLEI
FLOWSHEETS
INORGANIC ION EXCHANGERS
INTERMEDIATE MASS NUCLEI
ION EXCHANGE MATERIALS
ISOTOPES
LIQUID WASTES
MANAGEMENT
MATERIALS
MINERALS
NUCLEI
ODD-EVEN NUCLEI
PH VALUE
POWER REACTORS
PROCESSING
PWR TYPE REACTORS
RADIOACTIVE WASTE PROCESSING
RADIOISOTOPES
REACTOR ACCIDENTS
REACTORS
SEPARATION PROCESSES
SILICA GEL
STRONTIUM 90
STRONTIUM ISOTOPES
TEMPERATURE DEPENDENCE
THERMAL REACTORS
THREE MILE ISLAND-2 REACTOR
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER COOLED REACTORS
WATER MODERATED REACTORS
WATER TREATMENT
YEARS LIVING RADIOISOTOPES
ZEOLITES