| Popis: |
PART A of this handbook is for metal alloy fuels. The metal alloy of transuranic elements (i.e., Pu, Np, Am, Cm, etc) in Zr, designated as TRU-Zr, is one of the primary candidate fuel types for the AAA system. The data found in the literature were critically reviewed and assessed to provide the recommended ones. For the convenience of the user, most of the materials properties are given in model correlations; performance models are also provided in mathematical formulas. Tabulations were made in case where these were judged to allow more flexibility for the user. The information for the materials properties of the TRU-Zr alloy, however, is extremely scarce in general. Therefore, where no data exists, the values and models based on theoretical estimations and extrapolations from the U-Zr and U-Pu-Zr data are inevitably recommended. The justifications for this will be possible when sufficient measured data are available in the future. In this respect, this part is subject to modification whenever new data or better methods of deduction become available. The purpose of PART B is to provide the best available fuel materials properties and performance models of the (Pu,Zr)N and (TRU,Zr)N solid-solution fuels for fuel design and safety calculation of the Advanced Accelerator Assisted (AAA) system. PART B parallels PART A, Metal Alloy Fuels, in form and topics. The solid solution of the mononitrides of transuranic elements (i.e., Pu, Np, Am, Cm, etc) with zirconium mononitride, designated as (TRU,Zr)N, is one of the primary candidate fuel types for the AAA system, together with metallic TRU-Zr alloy fuels studied in Argonne National Laboratory. The data found in the literature were critically reviewed and assessed to provide the recommended ones. For the convenience of the user, most of the materials properties are given in model correlations; performance models are also provided in mathematical formulas. Tabulations were made in some cases where these were regarded to allow more flexibility for the user. The information for the materials properties of (Pu,Zr)N and (TRU,Zr)N, however, is in many cases nonexistent in general. Therefore, where no data exists, the values and models based on theoretical estimations are made. Extrapolations from the similar ceramic materials such as (U,Pu)C and (U,Pu)N, which have relatively more data, are inevitably relied upon. The justifications for this will be possible only when sufficient measured data become available in the future. |
