Monitoring the degradation of nuclear waste packages induced by interior metallic corrosion using synchrotron X-ray tomography

C. Paraskevoulakos*, C. A. Stitt, K. R. Hallam, A. Banos, M. Leal Olloqui, C. P. Jones, G. Griffiths, A. M. Adamska, J. Jowsey, T. B. Scott

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

1 Citation (Scopus)

Abstract

Within the British nuclear inventory, waste is classified into three main categories, including Intermediate Level Waste (ILW). ILW mainly consists of fuel casing metallic swarf, where parts of uranium metal are also expected to have been agglomerated. ILW treatment route includes the material storage in stainless steel drums and subsequent grout encapsulation. The solidified matrix is believed to maintain the radioactive waste fully confined and immobile. Recent inspections revealed mechanical distortion around the steel liner in a proportion of the inspected drums. The distortion has been ascribed to the corrosion of the encapsulated metallic parts. The generated corrosion products occupy greater volume than the parent metal, resulting in an internal volume expansion which imposes stress/strain on the encapsulants. This study attempts to correlate the level of internal corrosion with the magnitude of package degradation in ILW drum–simulant systems by favouring the use of powerful synchrotron X-rays.

Original languageEnglish
Pages (from-to)90-103
Number of pages14
JournalConstruction and Building Materials
Volume215
Early online date3 May 2019
DOIs
Publication statusPublished - 10 Aug 2019

Keywords

  • Corrosion
  • Crack detection
  • Granulated Blast-Furnace Slag
  • Ordinary Portland Cement
  • Synchrotron X-ray tomography

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  • Student Theses

    A study of alteration processes in bentonite

    Author: Leal Olloqui, M., 23 Jan 2020

    Supervisor: Scott, T. B. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy (PhD)

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