APPLICATION OF GEMSAFE TO ITER CDA AND ITS COMPARISON WITH FER

A safety analysis for the design of International Thermonuclear Experi mental Reactor (ITER) in the Conceptual Design Activity stage was perf ormed by the GEMSAFE methodology, and its results were compared with t hose of Fusion Experimental Reactor (FER), a Japan's facility planned next to JT-60. The objectives of this study are to confirm the applica bility of GEMSAFE to ITER and to select design basis events of ITER an d identify R&D items with comparison to FER. Function-Based Safety Ana lyses (FBSA) were carred out to select 19 and 25 design basis events f or FER and ITER, respectively. The major reason for the difference is that ITER has a class-2 RI source, e.g., tritium of 7.5 x 10(5) Ci in mobile form, in the coolant for the first wall and blankets as well as a class-3 RI source, e.g., the immobile tritium of 2.2 x 10(7) Ci abs orbed in first wall and dust.