Frequency-response Testing of the Molten-salt Reactor Experiment PDF Download
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Author: Robert Cecil Steffy
Publisher:
ISBN:
Category :
Languages : en
Pages : 117
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Author: Robert Cecil Steffy
Publisher:
ISBN:
Category :
Languages : en
Pages : 117
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Author: T Kerlin
Publisher: Elsevier
ISBN: 0323160514
Category : Technology & Engineering
Languages : en
Pages : 189
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Book Description
Frequency Response Testing in Nuclear Reactors presents the optimum testing procedures for measurements in power reactors. This eight-chapter book emphasizes the determination of the system frequency response using nonsinusoidal input perturbations, which are useful since normal power reactor hardware can be used. This text deals first with the mathematical aspects of frequency response testing, with a particular emphasis on numerical Fourier transformations using analog or digital equipment. The subsequent chapters examine the important signals for use in frequency responses tests and the analysis of these signals using analog and digital computing equipment. The discussion then shifts to the frequency response functions that describe nuclear reactor dynamics. This topic is followed by a presentation of techniques for extracting useful information from test results. A chapter highlights the most common control-rod drive mechanisms to assess their suitability for dynamics testing. The concluding chapter provides a brief summary of significant experiences with dynamics tests in nuclear reactors. Scientists, researchers, and workers in the field of nuclear reactors and related subjects will find this book invaluable.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Author: Vikram Singh (Researcher in nuclear engineering)
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Molten-Salt Reactors (MSR) are a Gen-IV reactor concept being investigated by companies and institutions alike. These reactors are considerably different from the current fleet of Light-Water Reactors and outside the experience base of most Nuclear Engineers. The fluid nature of the fuel leads to delayed temperature and reactivity feedback effects unique to each reactor design that need to be characterized to determine operability and safety limits. Moreover, the design space under consideration encompasses various fuel-cycles, neutron spectra, and materials. This requires a modeling methodology that can be applied to the breadth of designs under development and is the subject of ongoing research at the University of Tennessee. This thesis presents a dynamic modeling approach that was validated against experimental data from the Molten-Salt Reactor Experiment. The developed lumped-parameter models are nonlinear and represent time rate of change in mass and energy in all parts of the reactor. Reactivity feedbacks arising from changes in temperature and neutron poison concentrations are taken into account. These models can be used to study both the time and frequency response to perturbations caused during normal operating conditions and during anomalies resulting from failure of certain components. The thesis incorporates material published in a series of journal articles and conference proceedings. The validated modeling approach is detailed, and all equations and parameters of interest are listed. Three reactor systems are modeled, namely the Molten-Salt Reactor Experiment, two-fluid Molten-Salt Breeder Reactor, and a plant-level model based on the Molten-Salt Demonstration Reactor. Application of the models to studying operational anomalies, dynamic effects of xenon and samarium neutron poisons, parametric sensitivity analysis, and load-following are also presented. From the investigated perturbations for the presented designs, it is found that these systems are stable and self-regulating. Modeling results suggest that well-designed MSRs with adequate negative feedback exhibit excellent load-following characteristics that can be leveraged to engineer control systems offering a great deal of autonomy.
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1310
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Author:
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 700
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Author:
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 650
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Author:
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 1110
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Author:
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ISBN:
Category :
Languages : en
Pages : 15
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The Experimental Breeder Reactor 2 (EBR-2) reactivity-to-power frequency-response function was measured with pseudo-random, discrete-level, periodic signals. The reactor power deviation was small with insignificant perturbation of normal operation and in-place irradiation experiments. Comparison of results with measured rod oscillator data and with theoretical predictions show good agreement. Moreover, measures of input signal quality (autocorrelation function and energy spectra) confirm the ability to enable this type of frequency response determination at EBR-2. Measurements were made with the pseudo-random binary sequence, quadratic residue binary sequence, pseudo-random ternary sequence, and the multifrequency binary sequence. 10 refs., 7 figs., 3 tabs.
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Category : Aeronautics
Languages : en
Pages : 792
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
