Verifying the spin of centrifuges

This paper discusses a non proliferation assessment of open source data that is related to the large scale production of 235U. Solution methods and engineering models are indicated by referring to standard works in the field of isotope separation. The technique is illustrated with a calculation of the feed flow rate to a 164 first generation machine cascade, such as the Iranian IR-1 cascades that are currently installed in the Iranian Nuclear Fuel Enrichment Plant in Natanz.