Detecting and imaging stress corrosion cracking in stainless steel, with application to inspecting storage canisters for spent nuclear fuel

Marcel C. Remillieux, Djamel Kaoumi, Yoshikazu Ohara, Marcie A. Stuber Geesey, Li Xi, Ryan Schoell, Charles R. Bryan, David G. Enos, Deborah A. Summa, T. J. Ulrich, Brian E. Anderson, Zeev Shayer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

One of the primary concerns with the long-term performance of storage systems for spent nuclear fuel (SNF) is the potential for corrosion due to deliquescence of salts deposited as aerosols on the surface of the canister, which is typically made of austentic stainless steel. In regions of high residual weld stresses, this may lead to localized stress-corrosion cracking (SCC). The ability to detect and image SCC at an early stage (long before the cracks are susceptible to propagate through the thickness of the canister wall and leaks of radioactive material may occur) is essential to the performance evaluation and licensing process of the storage systems. In this paper, we explore a number of nondestructive testing techniques to detect and image SCC in austenitic stainless steel. Our attention is focused on a small rectangular sample of 1 × 2 in2 with two cracks of mm-scale sizes. The techniques explored in this paper include nonlinear resonant ultrasound spectroscopy (NRUS) for detection, Linear Elastodynamic Gradient Imaging Technique (LEGIT), ultrasonic C-scan, vibrothermography, and synchrotron X-ray diffraction for imaging. Results obtained from these techniques are compared. Cracks of mm-scale sizes can be detected and imaged with all the techniques explored in this study.

Original languageEnglish
Article number102180
JournalNDT and E International
Volume109
DOIs
Publication statusPublished - 2020 Jan

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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    Remillieux, M. C., Kaoumi, D., Ohara, Y., Stuber Geesey, M. A., Xi, L., Schoell, R., Bryan, C. R., Enos, D. G., Summa, D. A., Ulrich, T. J., Anderson, B. E., & Shayer, Z. (2020). Detecting and imaging stress corrosion cracking in stainless steel, with application to inspecting storage canisters for spent nuclear fuel. NDT and E International, 109, [102180]. https://doi.org/10.1016/j.ndteint.2019.102180