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Report No.

JAEA's contribution to development of J-MOX safeguards system

Nagatani, Taketeru ; Nakajima, Shinji; Kawakubo, Yoko; Shiromo, Hideo ; Asano, Takashi ; Marlow, J.*; Swinhoe, M. T.*; Menlove, H.*; Rael, C.*; Kawasue, Akane*; Watanabe, Takehito*; Iso, Shoko*

Secretariat of Nuclear Regulation Authority (NRA) has developed Non-Destructive Assay (NDA) systems including Advanced Fuel Assembly System (AFAS) and Advanced Verification for Inventory sample System (AVIS) for a large scale LWR MOX fuel fabrication plant (J-MOX) being constructed by Japan Nuclear Fuel Limited. Because the AFAS applies the new technology and the AVIS requires bias defect level accuracy, NRA and IAEA recognize the importance of demonstrating system performance before the installation to J-MOX. Plutonium Fuel Development Center of Japan Atomic Energy Agency (JAEA) has developed various NDA systems to quantify the plutonium in a variety of physical forms of MOX samples such as powder, pellet, pin and assembly in MOX fuel fabrication facilities. JAEA has knowledge and experiences obtained through the development of the NDAs and testing fields to demonstrate system performance of AFAS and AVIS. Based on the commission from NRA and Nuclear Material Control Center (NMCC), JAEA has conducted the demonstration test of the AFAS and AVIS by using MOX samples and assemblies at JAEA's MOX fuel fabrication facilities. Through the test, JAEA has contributed to development of J-MOX safeguards systems by demonstrating that the system performance of the AFAS and AVIS satisfies requirements by IAEA.



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