Skip to main content Accessibility help
×
Home

Radiocarbon measurements in cemented ion-exchange resins

  • Stasys Motiejunas (a1), Algirdas Vaidotas (a1), Jonas Mazeika (a2), Zana Skuratovic (a2) and Violeta Vaitkeviciene (a2)...

Abstract

A large amount of liquid radioactive waste has been generated at the Ignalina Nuclear Power Plant (NPP), Lithuania, during its operation. The contaminated liquids are treated with ion exchange-resins, which will generate significant waste stream for cementation. The cemented waste will be disposed of in a near-surface repository. The preliminary safety assessment uncovered that 14C is the most significant radionuclide affecting long-term safety of the closed repository. The method of combined acid striping and wet oxidation with subsequent catalytic combustion has been applied for 14C measurements in cemented ion-exchange resins. It allows separating organic and inorganic compounds from the same sample. At first, the inorganic fraction was extracted by adding acid to the sample followed by absorption of CO2 in a pair of alkali gas washed traps. The remaining carbon was extracted by application of a strong oxidizer. The preliminary results show that activity concentration of 14C in the solidified waste has an order of magnitude of tens and hundreds Bq per gram.

Copyright

References

Hide All
1. Poskas, P. et al. , EIA Report, No. B912 (2010).
2. Yim, M.-S., Caron, F., Prog. Nucl. Energ. 48, 2 (2006).10.1016/j.pnucene.2005.04.002
3. Vance, J. N., Cline, J. E., Robertson, D. E., EPRI Technical Report TR-105715 (1995).
4. Penkov, V. et al. , IAE Report, No. CN-90/17 (1999).
5. Magnusson, Å., PhD Thesis, Lund University (2007).
6. Salonen, L., Snellman, M., Final Report of Research Agreement No 3065/R2/CF, IAEA (1985).
7. Veres, M., Hertelendi, E., Uchrin, G., Csaba, E., Barnabás, I., Ormai, P., Volent, G., Futó, I., Radiocarbon, 37 (2) 473497 (1995).10.1017/S0033822200030976
8. Magnusson, Å., Stenstrom, K., SKB Report R-05–78 (2005).
9. Ch, J. Jr. Passo, G.T. Cook in Handbook of Environmental Liquid Scintillation Spectrometry. A Compilation of Theory and Methods (Packard Instrument Company, U.S.A., Meriden, 1994), p.156.
10. Plukis, A., Remeikis, V., Juodis, L., Plukiene, R., Lukauskas, D., Gudelis, A., Lith J Phys, 48 (4) 375379 (2008).10.3952/lithjphys.48409

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed