Screenshot from the IAEA's Integrated Nuclear Fuel Cycle Information System (iNFCIS), an online nuclear fuel cycle simulation application.

(Source: iNFCIS website)

A detailed overview of the nuclear fuel cycle, identifying, describing and characterizing every known technical process for converting nuclear source material to weapon usable material, and identifying each process in terms of the equipment, nuclear material and non-nuclear material involved. The physical model is used by the IAEA for acquisition path analysis and for safeguards State evaluations