Preparation of unified cross section library for demonstration fast breeder reactor (I); Analysis of experiments in ZPPR-2,3, SEFOR and Adjustment

not registered; Sanda, Toshio*

To develop nuclear design of LMFBR cores, they are important subjects of research and development to improve the accuracy in nuclear design of large LMFBR cores and to design highly efficient core more rationally. The adjusted nuclear cross-sections library had been made by being reflected the result of critical experiment of the JUPITER, etc.effectively as much as possible. And the distinct improvement of the accuracy in nuclear design of large LMFBR cores had been achieved. But, this adjusted library published in 1991 should be improved utilizing the newest results of study for the stage in which nuclear design is required higher precision such as fundamental design of demonstration FBR, because it was adjusted by using the data of only JUPITER experiment, without burnup and temperature characteristics, basing on JENDL-2 published in early 1980s, and wasn't done the adjustment of inelastic scattering matrix. Therefore the object of this work is to make unified cross-section library that will be able to use for design stage from fundamental to approval by adjusting the newest domestic library, JENDL-3.2 published in 1994 and improving precision and trust in nuclear design. For the object, it will be used for adjustment that "Monju" and "Joyo" experimental data being owned by PNC, critical experimental data of ZPPR-2,3 and MOZART, burnup characteristics, and temperature characteristics. The results of this study are as follows: (1)It was prepared each C/E values, experimental and analysis errors, correlation factors, etc. of criticality, reaction rate ratio, control rod worth, and Doppler reactivity experimented in ZPPR-2,3. (2)It was prepared the data of C/E values, experimental and analysis errors, correlation factors, etc. of isothermal temperature coefficient experimented in SEFOR. (3)JENDL-3.2 library was preparatorily adjusted using the experimental data which had been already obtained. The effect of adjustment and validity of decided errors were ...