PROSA, AN ADVANCED COMPUTER PACKAGE FOR SEQUENTIAL EVALUATION OF NUCLEAR MATERIALS BALANCE DATA

According to the Treaty of Non- Proliferation of Nuclear Weapons (NPT), the International Atomic Energy Agency (IAEA) executes frequent inspections in nuclear facilities. For inspection planning and evaluations, a set of technical criteria has been defined by the IAEA for internal use which requires advanced accountancy measures, in particular as far as bulk handling facilities of industrial scale are concerned. In this connection, the Karlsruhe Nuclear Research Center has developed a software package called PROSA. PROSA evaluates nuclear material balances based on the measurement model of the facility by three different sequential test procedures. In the present version, PROSA performs those evaluations for the first time in real sequential manner. In order to make PROSA suitable for routine field use, a menu-guided user shell and a useful graphical output utility are included. Application experiences have demonstrated that PROSA is a powerful tool not only for international safeguards but also for process - control purposes.