[2B16-21] Decommissioning of Fukushima Daiichi NPP 4

[2B21] Assessment of dust dispersion data for future safety analysis of Fukushima Daiichi fuel debris retrieval

(2) Examination of dust dispersion measurement method

*Taizo Kanai¹, Koichi Uozumi¹, Kinya Nakamura¹, Tadafumi Koyama¹, Daisuke Yamauchi², Yuichi Iwata², Kazutaka Mogi² (1. CRIEPI, 2. TEPCO HD)

Keywords:Fuel debris retrieval, Airborne Release Fraction, Disc cutter, Chisel, Laser, Core bowling

In order to contribute to the safety evaluation of fuel debris retrieval, we are proceeding with the evaluation of dust dispersion data associated with fuel debris cutting by disc cutter, chisel, core boring, and laser. We report on the study of the dust scattering rate measurement method.