2022 Fall Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 504-2 Nuclear Chemistry, Radiochemistry, Analytical Chemistry, Chemistry of Actinide Elements

[3D08-11] Analytical Technique 2

Fri. Sep 9, 2022 2:45 PM - 3:55 PM Room D (E1 Bildg.2F No.23)

Chair:Yuji Sasaki(JAEA)

3:00 PM - 3:15 PM

[3D09] Demonstration study of Analytical Methods and Identification of Issues using TMI-2 Debris for Chemical Analysis of Fuel Debris

*Satoshi Nakamura1, Yasutoshi Ban1, Mie Sugimoto1, Masaki Tambo1, Hiroyuki Fukaya1, Kenta Hiruta1, Takuya Yoshida1, Hiroyuki Uehara1, Yasuhiko Kimura1, Masahide Takano1 (1. Japan Atomic Energy Agency)

Keywords:Fuel debris, Fukushima Daiichi NPP accident, sodium peroxide, alkaline fusion

In Nuclear Science Research Institute at JAEA, detailed studies with regard to the elemental and nuclide compositions of fuel debris have been proceeding. We have conducted dissolution of the samples by alkaline fusion with sodium peroxide and chemical analysis by ICP-AES, alpha and gamma spectrometer, and TIMS. After studying the dissolution methods with various types of simulated debris, a demonstration test with TMI-2 debris was conducted. The elemental composition in the dissolved solution of TMI-2 debris consistent with the results of SEM/WDX and XRD analyses, and the validity of the present method was confirmed. In this presentation, the details of each analysis and the issues raised through the analysis will be introduced.