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The purpose of present study is to establish computational system for the nucleonics feasibility of DUPIC fuel cycle and to provide verification method for lattice code. The result of present study is as follows: (1) Revision of CASMO library for DUPIC fuel analysis, CASMO3 library has been updated utilizing new ENDF/B-VI and other data. New library has been compared with original library. Number density calculational model for major fission products and actinide has been developed. (2) Establishment of DUPIC fuel cycle analysis system, In order to interface CASMO and WIMS/AECL, each code has been checked under DUPIC fuel condition. For the case of burnup analysis of PWR fuel pin using both code show that relative error of reactivity is about 0.2 - 0.7%. The plutonium production differences cause this difference. However, it turns out that the error increases as burnup increases. Comparative studies on CANDU fuel pin has been performed. (3) Establishment of verification method for DUPIC fuel analysis code, Since benchmark problems for DUPIC lattice do not exit, it is necessary to define benchmark problems as well as to perform nuclear experiments for DUPIC fuel lattices. In the present studies, the review of existing experimental studies for heavy water lattice has been performed, and some suggestions regarding benchmark experiments are identified. 34 refs., 42 tabs., 36 figs. (author)