International safeguards transparency

The transparency for the application of effective safeguards becomes more and more important. The most important transparency must be the transparency of national nuclear material inventories. Japan disclosed the national inventories every year through the 'White Paper on Nuclear Energy in Japan'. This disclosure also shows the domestic and international movements of nuclear materials which Japan controls. It is possible to introduce many statistics such as material balance for years by using White papers. Person-days of national inspections are also disclosed by the White paper. Person-days are presented attempting comparison with related IAEA person-days. Japan is the only country making public of its national nuclear material inventories, including plutonium. This transparency is the Japanese attempt to give the world assurance of no diversion. (author)