Institute for Nuclear Waste Disposal

KORSO: Corrosion and sorption processes at steel surfaces under high temperatures and pressures in anaerobic saline conditions

  • contact:

    Nicolas Finck

  • funding:

    BMWi

  • Partner:

    Gesellschaft für Anlagen- und Reaktorsicherheit gGmbH (GRS)

    Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE)

  • startdate:

    2016

  • enddate:

    2020

The chemical and mechanical stability of metallic containers for radioactive waste play an important role in safety performance assessment. The goal of this project is to significantly improve the understanding of metallic corrosion in saline environments under conditions representative of disposal sites for heat generating waste. Partial reactions will be deciphered by applying electrochemical methods, and formed corrosion products will be characterized by applying complementary microscopic and spectroscopic techniques. Investigations of the retention of radionuclide by synthetic corrosion products by combining spectroscopic and chemical methods constitute another emphasis of the project. The ultimate goal is to significantly reduce uncertainties concerning the interaction mechanism(s) between radionuclides and corrosion products and thereby improve the confidence in the long-term prediction of radionuclide mobility.