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The purpose of this research is to obtain knowledge for effective use of Location Optimization Plan (LOP). Not many cities are actively trying to form a centralized urban structure.If the ratio of the area of the Dwelling Attraction Area (DAA) to the area of Urbanization Promotion Area is less than 70%, it is possible to maintain the population density within the DAA.Many cities do not have active guidance measures to induce DAA residence. However, in some cities, the DAA is narrowed and the residents are actively guided.Many cities try to maintain their living environment outside the DAA.

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The JASPER Experiment had been conducted to obtain useful information on FBR shielding analysis accuracy. Results obtained from the post-experimental analyses are summarized in this paper. Both characteristics for bulk shielding attenuation and streaming of neutron through configurations consisting of several materials including B 4C, stainless steel, sodium and etc. were clarified and the analysis accuracy confirmed. The shielding analysis system for fast reactors has been improved and verified. These experimental data and analytical results were reviewed from a viewpoint of the applicability to the shielding design analysis of the DFBR. Useful information to be utilized in the design study of the DFBR is accumulated through those activities.