@inproceedings{492fae0632e449168d5172fdf5747d2c,
title = "Corrosion behavior of spent nuclear fuel in high pH solutions – Effect of hydrogen",
abstract = "In accordance with the Belgian “supercontainer design”, spent nuclear fuel (SNF) will be encapsulated in carbon steel canisters, surrounded by a concrete overpack for disposal in poorly-indurated clay. After re-saturation of the barriers by porewater, interactions with the concrete will result in solutions rich in NaOH, KOH and Ca(OH)2. Corrosion studies of SNF in ECW-type solution (Evolved Cement Water) and YCWCa-type solution (Young Cement Water with Ca) were performed under externally applied H2 overpressures over 426 days. Directly after H2 application, Tc concentrations decreased from >10-8 M to concentrations below detection limit. Based on the fractional release of selected fission products, low matrix dissolution rates of ~10-8/day were found in both experiments. U concentrations decreased finally to 1.5•10-9 M (YCWCa) and to 2.1•10-10 M (ECW), respectively. Am, Np and Pu concentrations were found throughout the experiments below their detection limits indicating an effective retention process.",
keywords = "Spent nuclear fuel, supercontainer, concrete, hydrogen, matrix dissolution",
author = "A. Loida and R. Gens and C. Bube and Karel Lemmens and Christelle Cachoir and Thierry Mennecart and B. Kienzler",
note = "Score = 0; XXXV International Symposium {"}Scientific Basis for Nuclear Waste Management”, MRS 2011 ; Conference date: 02-10-2011 Through 07-10-2011",
year = "2012",
month = dec,
doi = "10.1557/opl.2012.564",
language = "English",
isbn = "978-1-60511-452-1",
volume = "1475",
series = "MRS Symposium Proceedings",
number = "1475",
pages = "119--124",
booktitle = "MRS Symposium Proceedings. Scientific Basis for Nuclear Waste Management XXXV",
}