Related Experiment Video
Updated: Apr 12, 2026

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
Estimation of 85Kr dispersion from the spent nuclear fuel reprocessing plant in Rokkasho, Japan, using an atmospheric
K Abe1, T Iyogi2, H Kawabata2
1Institute for Environmental Sciences, 1-7 Ienomae, Obuchi, Rokkasho, Aomori, Japan abe@ies.or.jp.
Abstract:
The spent nuclear fuel reprocessing plant of Japan Nuclear Fuel Limited (JNFL) located in Rokkasho, Japan, discharged small amounts of (85)Kr into the atmosphere during final tests of the plant with actual spent fuel from 31 March 2006 to October 2008. During this period, the gamma-ray dose rates due to discharged (85)Kr were higher than the background rates measured at the Institute for Environmental Sciences and at seven monitoring stations of the Aomori prefectural government and JNFL. The dispersion of (85)Kr was simulated by means of the fifth-generation Penn State/NCAR Mesoscale Model and the CG-MATHEW/ADPIC models (ver. 5.0) with a vertical terrain-following height coordinate. Although the simulated gamma-ray dose rates due to discharged (85)Kr agreed fairly well with measured rates, the agreement between the estimated monthly mean (85)Kr concentrations and the observed concentrations was poor. Improvement of the vertical flow of air may lead to better estimation of (85)Kr dispersion.
More Related Videos
Related Concept Videos
Nuclear Transmutation
Atomic Absorption Spectroscopy: Atomization Methods
Radioactive Decay and Radiometric Dating
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...

