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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
가압경수로형 원전에서 발생된 폐수지의 14C 및 3H 동시 분리 및 측정
Simultaneous Separation and Determination of 14C and 3H in Spent Resins from PWR Nuclear Power Plants
Abstract
In this work distribution characteristics of spent resins from nuclear power plants(NPPs), pressurized water reactors(PWRs), was investigated. It was found that the recovery percent of by the wet oxidation-acid stripping was for the added activity range of , and it was not affected by the kinds of stripping acids, 3N-HCl, . And the recovery percent of by distillation using the same apparatus was for the added activity range of . Among the tested stripping acids, 3\;N-HCl, , only the trapped solution by distillation in was compatible with the 3H scintillator, Ultimagold XR. Neither of the trapping solutions from the spent ion exchange resin samples by the wet oxidation-3 stripping contained gamma nuclides. However, some gamma nuclides, , were found in the trapped solutions of the spent resins by the wet oxidation-3 N-HCl stripping. It was the same for the trapping solutions of the spent resins by Sample Oxidizer(PACKARD MODEL 307). Meanwhile only two nuclides, , were found in the trapping solutions of the spent resins by Sample Oxidizer(PACKARD MODEL 307). It was found that most of the in the spent resins existed as inorganic carbon form, more than about 70% of the total content. Among the analyzed 30 spent ion exchange resin samples, the average concentration of and for the high radioactive samples, 8 samples, was and that for the low radioactive samples, 22 samples, was , respectively. And the average ratio for the high radioactive samples, was higher, 28, than that of low radioactive samples, 0.70. Some linear relationship trend was found between the activity concentrations of .
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