Non-destructive assay equipment for quantitative determination of the nuclear material in plutonium fuel fabrication facility

not registered; Akutsu, Hideo*; not registered; Miyahara, Kenji; not registered; not registered

Non-destructive assay equipment for quantitative determination of the neuclear material in plutonium fuel fabrication facility. In plutonium fuel Fabrication Facility (PFFF) of PNC, nuclear materials are received in the form of oxide powder both for plutonium and uranium as raw material, and are shipped to reactor site as the sub-assembly after passing through fabrication processes such as pellet preparation, fuel rod fabrication and assembling. This production line has some strategic points where the nondestructive assay is available for the safeguards techniques. In our facility, four strategic points for nondestructive assay were established as follows. (1) Receiving of nuclear material, (2) Shipping of subassembly, (3) Fuel rod, (4) Contaminated waste and scrap of the fuel power or pellets. This paper reports the result obtained from a callorimeter, scanner, neutron coincidence meter that was prepared for these strategic points.