2019 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 503-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

[1D01-05] Chemistry of Cesium

Wed. Mar 20, 2019 2:45 PM - 4:05 PM Room D (Common Education Bildg. 2 1F No.12)

Chair:Ryuji Nagaishi(JAEA)

3:30 PM - 3:45 PM

[1D04] Investigation of in-reactor cesium chemical behavior in TEPCO's Fukushima Daiichi Nuclear Power Station accident

(12)Analysis of nuclides in samples collected from primary containment vessel of Unit 1

*Kazuki Morishita1,2, Takashi Onishi1,2, Koji Maeda1,2, Masato Mizokami3, Kenichi Ito3, Shinya Mizokami3 (1. IRID, 2. JAEA, 3. TEPCO HD)

Keywords:Fukushima Daiichi Nuclear Power Station accident, Alpha spectrometry, Gamma-ray spectrometry, Inductively Coupled Plasma Mass Spectrometry

Samples, collected from primary containment vessel of Fukushima Daiichi Unit 1, were immersed in nitric acid. Immersed solutions were analyzed by alpha spectrometry, gamma-ray spectrometry and ICP-MS. Analyses provided similar results with the past measurement and suggest small amount of Pu, Am, and Cm.