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Report No.

Investigation on applicability of fast neutron direct interrogation method to fuel debris, 2; Basic design of non-destructive measurement system

Maeda, Makoto; Furutaka, Kazuyoshi; Kureta, Masatoshi; Ozu, Akira; Tobita, Hiroshi; Haruyama, Mitsuo; Komeda, Masao; Hattori, Kentaro

We have developed the fast neutron direct interrogation, FNDI, method which measures the total amount of the fissile in fuel debris expected as promising nondestructive measurement technology. And we started examination about the possibility of whether to be applicable to measurement of the amount of fissile in the container which stored the fuel debris. In this report, the progress about the basic design of non-destructive measurement system which has been designed by using Monte Carlo code PHITS and newly developed visualization tools, and also the 4D visualization results of neutron diffusion characteristic in the system are reported.



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