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Report No.

Feasibility study of technology for Pu solution monitoring including FP, 1; Overview

Sekine, Megumi; Suzuki, Satoshi*; Matsuki, Takuya; Tsutagi, Koichi; Tanigawa, Masafumi; Ishiyama, Koichi; Nakamura, Hironobu; Tomikawa, Hirofumi

JAEA is being conducted feasibility study of technology for Pu solution monitoring including fission products (FPs) as a joint research program with U.S. DOE at the High Active Liquid Waste (HALW) Storage Facility in Tokai Reprocessing Plant to address effective and efficient safeguards for reprocessing facilities. As the first step, the design information of HALW tank was investigated and measurement test at the out of the concrete cell was conducted in order to confirm whether qualitative evaluation is possible by a simple method. As the second step, gamma dose rate was measured at the inside of the concrete cell which is necessary to optimize the MCNP model for the design and location of the detector at the inside of the concrete cell. As the third step, measureable radiations were investigated at the inside of the concrete cell by the detector which is designed and fabricated based on these outputs. As the final step measurement and simulation results will be evaluated for Feasibility study of the technology for Pu monitoring. This time, an overview and radiation measurement results at outside of cell wall will be reported.



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