Download or read book Optimization Study for Large Pressurized Water Reactor Cores written by L. E. Strawbridge and published by . This book was released on 1964 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Core Control Optimization for Scheduled Load Changes in Large Pressurized Water Reactors written by J. Karppinen and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of a Pressurized Water Reactor Core written by Richmond Gardner and published by . This book was released on 1957 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Hydride Fueled Pressurized Water Reactor Cores written by Carter Alexander Shuffler and published by . This book was released on 2004 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: (cont.) With these results, and the output from the steady-state thermal hydraulic analysis with vibrations and wear imposed design limits, an economics model is employed to determine the optimal geometries for incorporation into existing PWRs. The model also provides a basis for comparing the performance of UZrH1.6 to UO2 for a range of core geometries. Though this analysis focuses only on these fuels, the methodology can easily be extended to additional hydride and oxide fuel types, and will be in the future. Results presented herein do not show significant cost savings for UZrH1.6, primarily because the power and energy generation per core loading for both fuels are similar. Furthermore, the most economic geometries typically do not occur where power increases are reported by the thermal hydraulics. As a final note, the economic results in this report require revision to account for recent changes in the fuel performance analysis methodology. The changes, however, are not expected to influence the overall conclusion that UZrH1.6 does not outperform UO2 economically.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pressurized Water Reactor Core Control Optimization Utilizing the Optimal Control Theory written by Jianqing Ye and published by . This book was released on 1997 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Composition Optimization of Thorium uranium Pressurized Water Reactor Cores written by Kevin Taylor Clarno and published by . This book was released on 1999 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Optimization of Pressurized Light Water Reactor Cores written by Holger Pfeifer and published by . This book was released on 1997 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Hybrid Method for In core Optimization of Pressurized Water Reactor Reload Core Design written by and published by . This book was released on 1995 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is the development of an accurate, practical, and robust method for optimization of the design of loading patterns for pressurized water reactors, a nonlinear, non-convex, integer optimization problem. The many logical constraints which may be applied during the design process are modeled herein by a network construction upon which performance objectives and safety constraints from reactor physics calculations are optimized. This thesis presents the synthesis of the strengths of previous algorithms developed for reload design optimization and extension of robustness through development of a hybrid liberated search algorithm. Development of three independent methods for reload design optimization is presented: random direct search for local improvement, liberated search by simulated annealing, and deterministic search for local improvement via successive linear assignment by branch and bound. Comparative application of the methods to a variety of problems is discussed, including an exhaustive enumeration benchmark created to allow comparison of search results to a known global optimum for a large scale problem. While direct search and determinism are shown to be capable of finding improvement, only the liberation of simulated annealing is found to perform robustly in the non-convex design spaces. The hybrid method SHAMAN is presented. The algorithm applies: determinism to shuffle an initial solution for satisfaction of heuristics and symmetry; liberated search through simulated annealing with a bounds cooling constraint treatment; and search bias through relational heuristics for the application of engineering judgment. The accuracy, practicality, and robustness of the SHAMAN algorithm is demonstrated through application to a variety of reload loading pattern optimization problems.
Download or read book AEC Summary and Evaluation Report of Four Power Reactor Design Studies written by and published by . This book was released on 1959 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes and evaluates four power reactor design and engineering studies: pressurized water reactor, boiling water reactor, organic cooled reactor, and heavy water moderated power reactor.
Download or read book An Optimization Analysis for Fuel Replacement in Large Pressurized Water Reactors written by John Robert Fagan and published by . This book was released on 1968 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of In core Nuclear Fuel Management in a Pressurized Water Reactor written by Richard Bartholomew Stout and published by . This book was released on 1972 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel loading patterns which have a minimum power peak are economically desirable to allow power reactors to operate at the highest possible power density and to minimize the possibility of fuel failure. A computer code called SHUFLE was developed for pressurized water reactors which shuffles the fuel in search of the lowest possible power peaking factor. An iterative approach is used in this search routine. A radial power distribution is calculated from which the program logic Selects a movement of fuel elements in an attempt to lower the radial power peak. Another power calculation is made and the process repeated until a predetermined convergence is reached. The logic by which the code decides the fuel movement is presented, along with the criteria for accepting or rejecting the move after a power calculation of the new loading pattern is made. A 1.5 group course mesh diffusion theory method was used to obtain the power distribution for each SHUFLE iteration. Convergence to a final loading pattern varies from about 10 to 40 shuffling iterations depending on the initial loading presented to the code. Since the typical computer running time for a one-quarter core power distribution with this 1.5 group method is only one to a few seconds, depending on the loading, convergence to a good loading pattern takes on the order of one minute on a Univac 1108. The low computer cost plus ease of operation should make this code of considerable use in determining loading patterns with minimum power peaking for any given set of fuel elements. The program also has burnup capability which can be used to check power peaking throughout core life. A parametric analysis study of fuel cycle costs for a PWR is also presented. Cost parameters analyzed were variation in the cost of yellow cake, enrichment, money, fabrication, and reprocessing plus changes in burnup, load factors, power densities, and the effect of forced early discharge. Figures are presented to indicate total fuel costs as a function of burnup for these cost parameters. Linear relationships for minimum cost and optimum burnup are presented for each parameter.
Download or read book Advanced Pressurized Water Reactor Study written by U.S. Atomic Energy Commission. Division of Reactor Development and published by . This book was released on 1959 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Power Reactor Technology and Reactor Fuel Processing written by and published by . This book was released on 1964 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Core Reload Pattern and Composition Optimization Methodology for Pressurized Water Reactors written by Ildo Luis Sauer and published by . This book was released on 1985 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this research was the development of a comprehensive, rapid and conceptually simple methodology for PWR core reload pattern and fuel composition optimization, capable of systematic incorporation of constraints, in which cycle burnup is defined as the optimality criterion. A coarse mesh nodal method for PWR core analysis was formulated by coupling the one-and-one-half-group diffusion theory model for spatial power calculations with the linear reactivity versus burnup model (LRM) for depletion calculations. The accuracy and suitability of this model was determined through comparisons of its results with those of state-of-the-art core analysis methods. The simplicity of the LRM-based core model allowed the direct analytical computation of the derivatives necessary in the steepest gradient type optimization methods applied in the present work, and its versatility permitted use of the analytical and computational methods for a variety of applications, ranging from core reload pattern searches to burnable poison (BP) and composition optimization. Algorithms for identification of unconstrained maximum-burnup core reload patterns and for optimal BP allocation were successfully implemented and tested, and the basis for systematic incorporation of constraints on power peaking was developed. The potential application of the methodology to fuel composition optimization was also examined. Most of the methodological developments have been embodied in the LRM-NODAL code which was programmed in the course of this research. From the numerical and analytical results it was found that the optimal core configurations are arranged such as to produce power histories and profiles in which the most reactive assemblies are at their highest allowable power at EOC (thus maximizing their importance) and where the converse applies to the least reactive; these preferred profiles also produce relatively higher leakage at EOC, evolving to the lowest possible leakage at EOC, but always consistent with the maximization of the core reactivity importance.
Download or read book Power Reactor Technology written by and published by . This book was released on 1963 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Fuel Management written by Harvey W. Graves and published by John Wiley & Sons. This book was released on 1979 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
