Download or read book CRITICAL STUDIES OF A 440 LITER FAST REACTOR CORE FUELED WITH URANIUM ENRICHED TO 17 PERCENT ZPR 3 ASSEMBLY 41 written by and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1972 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor Development Program Progress Report written by and published by . This book was released on 1971-11 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two Spherical Fast Critical Experiments written by J. C. Bates and published by . This book was released on 1961 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two spherical versions of earlier cylindrical assemblies were used for a critical study of shape effects for fast reactor cores with volumes of 300 to 400 liters. Assemblies 24 (cylindrical) and 38 (spherical) had a high-density metallic uranium blanket, whereas the set of assemblies numbered 31 (cylindrical) and 39 (spherical) had a low-density uranium-fueled core (with steel and aluminum diluents) with a high-density blanket of depleted uranium. The main features of these assemblies are summarized. Reactivity coefficients of a small number of fissile and non-fissile materials were measured in both assemblies (38 and 39). In Assembly 38 the effects of environment, etc., upon fission rates measured with absolute fission chambers were investigated. Radial fission rate traverses in different directions were made in Assembly 39 to reveal any flux asymmetry due to heterogeneity of the core; no such effect was detected.
Download or read book LMFBR Safety written by J. R. Buchanan and published by . This book was released on 1976 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1972 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Two zone Fast Critical Experiment written by P. I. Amundson and published by . This book was released on 1964 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted to determine what properties of a previously studied dilute power reactor could be duplicated in a smaller two-zone assembly. Reactivity measurements performed included determinations of plate-orientation worth, homogeneity corrections, reactor-segment worths, central reactivity coefficients, and radial worth distributions of axial columns of core materials. Spectral index determinations included: central fission ratios, nuclear track emulsion measurements, fission counter traverses, Rossi-alpha measurements, sodium activation, and natural and enriched uranium foil measurements.
Download or read book Boletim written by Instituto de Energia Atômica (Brazil). Biblioteca and published by . This book was released on 1972 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigations of Secondary Critical Configurations written by W. Gemmell and published by . This book was released on 1964 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two configurations of a fast reactor core following a postulated accidental meltdown were investigated. The configurations were chosen to represent nonuniform distributions of fuel in which calculations of flux and reactivity worth could be compared with experimental values. The first configuration, Assembly 27, represented a case in which the center of a core had melted, and the top and center portions had collapsed into a dense fuel mass in the bottom of the reactor. The dense region is then surrounded by an annulus with the normal core composition, and this in turn is surrounded by the normal blanket. The second configuration, Assembly 28, represented a core in which vaporizing sodium caused the expulsion of all material from the axis of the core, and the annulus had melted and collapsed into a dense ring of fuel.
Download or read book The Coupled Aspects of a Fast thermal Critical written by B. J. Toppel and published by . This book was released on 1957 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: ZPR-V is a zero-power, coupled fast-thermal critical assembly involving a dilute fast core and a H2O-moderated, enriched U thermal annulus. The two regions are coupled through a natural U isolation blanket. This facility is useful in studying some of the properties of dilute fast reactor systems as well as those of coupled fast-thermal power breeders. Recent emphasis has been on the latter aspect of the problem and an investigation of the coupled aspects of the system has been made. An important parameter in the coupling concept is the division of reactivity. This can be determined by means of fast fuel substitutions and 1/v poisoning of the thermal annulus in conjunction with theoretical calculations. Auxiliary information obtained in such a procedure is the fast fuel worth throughout the core and the prompt neutron lifetime of the whole system. A second important parameter, S1/S2 is the relative number of neutrons emitted per unit time due to fast and slow fissions. Information regarding this quantity can be obtained with the aid of U-235 and U-238 fission distributions. Measurements of the above parameters were made for the case of a U-235:U-238 atomic ratio of 5:1 in the fast core and a 1-in. isolation blanket. The fractions of reactivity in the fast core, blanket, and annulus are, respectively, 24, 14, and 61%; the prompt lifetime is 39.0 plus or minus 3.0 mu sec; the ratio S1/S2 is 0.43.
Download or read book Compilation of Fast Reactor Experiments written by and published by . This book was released on 1971 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Description of Integral Physics Data for Fast Reactor Design written by W. B. Loewenstein and published by . This book was released on 1961 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral physics data for fast reactor design are discussed. The measurements needed include those of critical mass, shape factor, detector ratios, neutron spectra, material replacement experiments, reflector savings, neutron lifetime, Rossi- alpha, and similar quantities. Topics covered include plutonium and uranium-233-fueled systems, highly enriched uranium-235 systems in optimum geometry, uranium cores of various enrichments and dilutions, extreme geometry critical experiments, specific reactor systems, core mockup in-homogeneities, spectral studies and detector ratios, uranium equilibrium spectrum data, material replacement measurements, fast reactor dynamics, and suggested future experiments and experimental programs.
Download or read book Government Reports Announcements written by and published by . This book was released on 1972 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Techniques in Fast Reactor Critical Experiments written by W. G. Davey and published by Gordon & Breach Publishing Group. This book was released on 1970 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactivity Changes of a Fast Reactor Core Due to Elastic plastic Strain and Creep written by Richard L. Puthoff and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast Reactor Shape Factors and Shape dependent Variables written by W. B. Loewenstein and published by . This book was released on 1961 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two systems represent a typical fast reactor and a typical fast critical experiment. The other two systems represent compositional combinations of the two basic systems.
Download or read book Archival of the ZPPR 15B Physics Experiment written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This I-NERI collaboration between Argonne National Laboratory (ANL) and Korea Atomic Energy Research Institute (KAERI) began mid-year (April, 2010). This report summarizes the progress for year two of the proposed three-year collaboration to generate a physics validation database of integral experiments for metallic fueled fast reactor systems. The objective of the proposed project is to archive and evaluate the integral experiment data, analyze the experiments, and prepare detailed computational models to be used for validating the modern suites of fast reactor design analysis tools which are under development at ANL and KAERI. A series of mockup experiments for a 330 MWe Integral Fast Reactor (IFR) at ANL under the ZPPR-15 Program, also known as the IFR Benchmark Physics Test Program will be retrieved and analyzed in this project. The ZPPR-15 program was conducted in four phases. Each phase was marked by a particular composition of the reference assembly. In the first phase (15A), only plutonium, depleted uranium, stainless steel and sodium were included in this very clean physics assembly. This allowed examination of the effect of removing oxygen from the typical oxide-fueled sodium fast reactor. Zirconium was added in the second phase (15B). Additionally, 13 control rods and channels were added after the first phase. In the third phase (15C), roughly half of the core volume was fueled by enriched uranium to simulate a fast reactor transition composition. In the final phase (15D), the enriched uranium component was increased to 90%, simulating a near-beginning-of-life composition. In addition to criticality, control rod worths, reaction rate distribution, reactivity coefficients, gamma heating, neutron spectrum and kinetics, there were a number of measurements aimed at addressing special issues of safety, economics and metal fuel composition. The BFS-73-1 and BFS-75-1 experiments of KAERI carried out as the mockup experiment of KALIMER-150 at the Russian BFS-1 facility will also be compiled in this project. ANL will also participate in KAERI's transuranics (TRU) burner physics experiments which are now in progress at the BFS-2 facility to validate the physics performance of its metal-fueled TRU burner reactor design and design analysis tools. This burner reactor physics experiment data will be a valuable addition to the existing experiment database for breeder reactors. The principal outcomes of this project include (1) compiled sets of measured physics parameters and uncertainties of ZPPR-15 experiments and consistent sets of as-built Monte Carlo models and (2) compiled sets of measured physics parameters and uncertainties and consistent sets of as-built Monte Carlo models for BFS-73-1, BFS-75-1 and a mock-up of a 300 MWe-rated TRU burner reactor (BFS-76-1). Since both the U.S. and the Republic of Korea (ROK) are interested in a TRU burning option using metal-fueled fast reactors, it is mutually beneficial to generate the physics validation database of metal-fueled fast reactors using the ZPPR-15 experiments and the new TRU burner physics experiments at the BFS-2. On the current year task of generating the ZPPR-15B experimental database, the complete loading records for all of the ZPPR-15B configurations have been captured, verified and entered into a database for the generation of the as-built models. All ZPPR-15B drawer master identifications and logbooks have also been reviewed. Detailed as-built Monte Carlo models have been completed and analyzed for all of the twelve planned ZPPR-15B configurations, including the reference critical configuration, the sodium void worth measurements, and the worth measurements of the control rod and control rod positions. These experiments have been analyzed with continuous-energy Monte Carlo using both ENDF/B-V.2 and ENDF/B-VII.0. Criticality results with ENDF/B-VII.0 data are good, although exhibiting a slight underprediction (≈200 pcm) of k{sub eff} values. This is a slightly larger underprediction (≈100 pcm) than obtained with ENDF/B-VII.0 for ZPPR-15A. Sodium void worth results with ENDF/B-VII.0 data are generally within ≈5-10%. The positive worths of voiding the central zones are slightly underpredicted. Results with ENDF/B-VII.0 data are good (within ≈5%) for the control rod and control rod position measurements. Furthermore, the performance of the ENDF/B-VII.0 data for ZPPR-15B was consistent with the performance for ZPPR-15A, indicating good performance by the zirconium evaluation for these experiments. On the task of compiling TRU burner physics experiments at BFS, the as-built model of BFS-73-1 provided by KAERI has been reviewed and analyzed. Criticality results for BFS-73-1 are underpredicted by ≈340 pcm with both ENDF/B-VII.0 and -VII. 1 data. ANL has provided comments on a draft report of the BFS-76-1 measurements and discussions of the current BFS-76-1 experiments are on-going.
