Multi-frequency ECT for sodium drained SG tubes of FBR using 3D finite element simulations

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Mihalache, Ovidiu^{a; *} | Yamaguchi, Toshihiko^a | Shirahama, Takuma^b | Ueda, Masashi^a

Affiliations: [a] Japan Atomic Energy Agency, Sector of Fast Reactor Research and Development, Tsuruga-shi, Fukui-ken, Japan | [b] NESI, Shiraki, Tsuruga-shi, Fukui, Japan

Correspondence: [*] Corresponding author: Ovidiu Mihalache, Japan Atomic Energy Agency, Sector of Fast Reactor Research and Development, Monju Project Management and Engineering Center, 1 Shiraki, Tsuruga-shi, Fukui-ken 919-1279, Japan. E-mail:mihalache.ovidiu@jaea.go.jp

Abstract: The paper presents investigation of dynamical window multi-frequency (DWMF) eddy currents algorithm applied to the helical steam generator tubes of FBR to improve the defect detection when the defect is free of sodium or sodium partially fills the volume of the defect. The task is accomplished using large scale three dimensional (3D) finite element (FE) numerical simulations, based on an in-house developed code massive parallelized, that can take into account full circumferential and partial outer tube defects located near or far from the tube support plate.

Keywords: Eddy currents, 3D, finite element, FBR, steam generator, multi-frequency, sodium

DOI: 10.3233/JAE-162032

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 659-666, 2016