Diffusion reaction between Zircaloy-2 and thoria

Sengupta, P.; Gawde, P. S.; Bhanumurthy, K.; Kale, G.B.

doi:10.1016/j.jnucmat.2003.12.004

Cited by 14 publications

(2 citation statements)

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“…Extensive studies by previous researchers have identified 'deep geological disposal of high-level nuclear waste' as the safest and most secure management route (Donald, 2010;Ewing, 1999). In brief, irradiation of nuclear fuels (Das et al, 2012;Kutty et al, 2008a,b;Sengupta et al, 2004Sengupta et al, , 2013 within reactors generates spent fuels which are kept within air or water-cooled storage facilities for periods of a few months to years. In an 'open fuel cycle', such spent fuels are treated as high-level nuclear waste and therefore merit deep geological disposal (Ojovan and Lee, 2005;Donald, 2010).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of actinides within speleothems

et al. 2016

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Stalagmites and stalactites, as observed within natural caves, may develop inside geological repositories during constructional and post-operational periods. It is therefore important to understand actinide sorption within such materials. Towards this, experimental studies were carried out with 233U, 238Np (VI), 238Np (IV), 239Pu and 241Am radiotracers using natural speleothem samples collected from the Dharamjali cave of the Kumaon Lesser Himalayas, India. Petrological/mineralogical studies showed that natural speleothems have three general domains: (1) columnar calcite; (2) microcrystalline calcite; and (3) botryoidal aragonite – each with ferruginous materials. Results showed that all domains of speleothems can take up >99% actinides, irrespective of valence state and pH (1–6 range) of the solution. However, distribution coefficients were found to be at a maximum in aragonite for most of the actinides. Such data are very important for long-term performance and safety assessments of the deep geological repositories planned for the disposal of high-level nuclear wastes.

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Section: Introductionmentioning

confidence: 99%

Adsorption of actinides within speleothems

et al. 2016

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“…extracted from the spent fuels (Table 1; [2]). Needless to say, the actual compositions (chemistry and radiochemistry) of HLWs depend on reprocessing route adopted as well as on spent fuel compositions [3][4][5][6][7] and their irradiation history (type of reactors, pellet-cladding interactions [8], neutron flux, burn up, cooling period, etc. [9]).…”

Section: Introductionmentioning

confidence: 99%