An Assessment of Inspection Effort in a Uranium Enrichment Facility Composed of Advanced UF6 Gas Centrifuges by Game Theory

In a uranium enrichment cascade composed of integrated type centrifuges containing advanced centrifuges, it seems to be relatively easy to change a piping arrangement for producing highly enriched uranium. In this study, assuming a diversion path with changing the piping arrangement, we model an inspection in a cascade area as a two-person non-cooperative game between an inspector and a facility operator. From our assessment of the inspection effort of personal visual observation, it is suggested that the diversion of unit cascades can be certainly detected. We recommend that personal visual observation should be carried out in the cascade area.