Zpr 6 Assembly 7 High 24 Pu Core
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Zpr 6 Assembly 7 High 24 Pu Core
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Author :
language : en
Publisher:
Release Date : 2007
Zpr 6 Assembly 7 High 24 Pu Core written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Over a period of 30 years more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited to form the basis for criticality safety benchmarks. Of the three classes of ZPR assemblies, engineering mockups, engineering benchmarks and physics benchmarks, the last group tends to be most useful for criticality safety. Because physics benchmarks were designed to test fast reactor physics data and methods, they were as simple as possible in geometry and composition. The principal fissile species was 235U or 239Pu. Fuel enrichments ranged from 9% to 95%. Often there were only one or two main core diluent materials, such as aluminum, graphite, iron, sodium or stainless steel. The cores were reflected (and insulated from room return effects) by one or two layers of materials such as depleted uranium, lead or stainless steel. Despite their more complex nature, a small number of assemblies from the other two classes would make useful criticality safety benchmarks because they have features related to criticality safety issues, such as reflection by soil-like material. The term 'benchmark' in a ZPR program connotes a particularly simple loading aimed at gaining basic reactor physics insight, as opposed to studying a reactor design. In fact, the ZPR-6/7 Benchmark Assembly (Reference 1) had a very simple core unit cell assembled from plates of depleted uranium, sodium, iron oxide, U3O8, and plutonium. The ZPR-6/7 core cell-average composition is typical of the interior region of liquid-metal fast breeder reactors (LMFBRs) of the era. It was one part of the Demonstration Reactor Benchmark Program, a which provided integral experiments characterizing the important features of demonstration-size LMFBRs. As a benchmark, ZPR-6/7 was devoid of many 'real' reactor features, such as simulated control rods and multiple enrichment zones, in its reference form. Those kinds of features were investigated experimentally in variants of the reference ZPR-6/7 or in other critical assemblies in the Demonstration Reactor Benchmark Program.
Zpr 6 Assembly 7 High 24 Pu Core Experiments
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Author :
language : en
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Release Date : 2009
Zpr 6 Assembly 7 High 24 Pu Core Experiments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
ZPR-6 Assembly 7 (ZPR-6/7) encompasses a series of experiments performed at the ZPR-6 facility at Argonne National Laboratory in 1970 and 1971 as part of the Demonstration Reactor Benchmark Program (Reference 1). Assembly 7 simulated a large sodium-cooled LMFBR with mixed oxide fuel, depleted uranium radial and axial blankets, and a core H/D near unity. ZPR-6/7 was designed to test fast reactor physics data and methods, so configurations in the Assembly 7 program were as simple as possible in terms of geometry and composition. ZPR-6/7 had a very uniform core assembled from small plates of depleted uranium, sodium, iron oxide, U3O and Pu-U-Mo alloy loaded into stainless steel drawers. The steel drawers were placed in square stainless steel tubes in the two halves of a split table machine. ZPR-6/7 had a simple, symmetric core unit cell whose neutronic characteristics were dominated by plutonium and 238U. The core was surrounded by thick radial and axial regions of depleted uranium to simulate radial and axial blankets and to isolate the core from the surrounding room. The ZPR-6/7 program encompassed 139 separate core loadings which include the initial approach to critical and all subsequent core loading changes required to perform specific experiments and measurements. In this context a loading refers to a particular configuration of fueled drawers, radial blanket drawers and experimental equipment (if present) in the matrix of steel tubes. Two principal core configurations were established. The uniform core (Loadings 1-84) had a relatively uniform core composition. The high 24°Pu core (Loadings 85-139) was a variant on the uniform core. The plutonium in the Pu-U-Mo fuel plates in the uniform core contains 11% 24°Pu. In the high 24°Pu core, all Pu-U-Mo plates in the inner core region (central 61 matrix locations per half of the split table machine) were replaced by Pu-U-Mo plates containing 27% 24°Pu in the plutonium component to construct a central core zone with a composition closer to that in an LMFBR core with high burnup. The high 24°Pu configuration was constructed for two reasons. First, the composition of the high 24°Pu zone more closely matched the composition of LMFBR cores anticipated in design work in 1970. Second, comparison of measurements in the ZPR-6/7 uniform core with corresponding measurements in the high 24°Pu zone provided an assessment of some of the effects of long-term 24°Pu buildup in LMFBR cores. The uniform core version of ZPR-6/7 is evaluated in ZPR-LMFR-EXP-001. This document only addresses measurements in the high 24°Pu core version of ZPR-6/7. Many types of measurements were performed as part of the ZPR-6/7 program. Measurements of criticality, sodium void worth, control rod worth and reaction rate distributions in the high 24°Pu core configuration are evaluated here. For each category of measurements, the uncertainties are evaluated, and benchmark model data are provided.
Nuclear Science Abstracts
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Author :
language : en
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Release Date : 1975
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Nuclear energy categories.
Reactor Physics Division Annual Report
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language : en
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Release Date : 1965-07
Reactor Physics Division Annual Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965-07 with Nuclear energy categories.
Reactor Development Program Progress Report
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language : en
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Release Date : 1969-11
Reactor Development Program Progress Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969-11 with Nuclear energy categories.
Indexed Bibliography Of Current Nuclear Safety Literature
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language : en
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Release Date : 1965
Indexed Bibliography Of Current Nuclear Safety Literature written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Nuclear reactors categories.
Power Reactor Technology And Reactor Fuel Processing
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language : en
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Release Date : 1963
Power Reactor Technology And Reactor Fuel Processing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Nuclear engineering categories.
Scientific And Technical Aerospace Reports
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language : en
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Release Date : 1971
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Aeronautics categories.
Proceedings Reactor Physics
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language : en
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Release Date : 1958
Proceedings Reactor Physics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Nuclear energy categories.
Power Reactor Technology
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Author :
language : en
Publisher:
Release Date : 1963
Power Reactor Technology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Nuclear engineering categories.