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Studies Of Past Operations At The High Flux Isotope Reactor
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Book Synopsis Studies of Past Operations at the High Flux Isotope Reactor by :
Download or read book Studies of Past Operations at the High Flux Isotope Reactor written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past year, two topics related to past operations of the High Flux Isotope Reactor (HFIR) were reviewed in response to on-going programs at Oak Ridge National Laboratory (ORNL). Currently, studies are being conducted to determine if HFIR can be converted from high enriched uranium (HEU) fuel to low enriched uranium (LEU). While the basis for conversion is the current performance of the reactor, redesign studies revealed an apparent slight degradation in performance of the reactor over its 40 year lifetime. A second program requiring data from HFIR staff is the Integrated Facility Disposition Project (IFDP). The IFDP is a program that integrates environmental cleanup with modernization and site revitalization plans and projects. Before a path of disposal can be established for discharged HFIR beryllium reflector regions, the reflector components must be classified as to type of waste and specifically, determine if they are transuranic waste.
Book Synopsis Recent Studies Related to Past Operations at the High Flux Isotope Reactor by :
Download or read book Recent Studies Related to Past Operations at the High Flux Isotope Reactor written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past year, two topics related to past operations of the High Flux Isotope Reactor (HFIR) were reviewed in response to on-going programs at Oak Ridge National Laboratory (ORNL). Currently, studies are being conducted to determine if HFIR can be converted from high enriched uranium (HEU) fuel to low enriched uranium (LEU). While the basis for conversion is the current performance of the reactor, redesign studies revealed an apparent slight degradation in performance of the reactor over its 40 year lifetime. A second program requiring data from HFIR staff is the Integrated Facility Disposition Project (IFDP). The IFDP is a program that integrates environmental cleanup with modernization and site revitalization plans and projects. Before a path of disposal can be established for discharged HFIR beryllium reflector regions, the reflector components must be classified as to type of waste and specifically, determine if they are transuranic waste.
Book Synopsis SELECTED STUDIES OF PAST OPERATIONS AT THE ORNL HIGH FLUX ISOTOPE REACTOR. by :
Download or read book SELECTED STUDIES OF PAST OPERATIONS AT THE ORNL HIGH FLUX ISOTOPE REACTOR. written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to on-going programs at Oak Ridge National Laboratory, two topics related to past operations of the High Flux Isotope Reactor (HFIR) are being reviewed and include determining whether HFIR fuel can be converted from high enriched uranium (HEU) to low enriched uranium (LEU) and determining whether HFIR beryllium reflectors are discharged as transuranic (TRU) waste. The LEU conversion and TRU waste studies are being performed in accordance with the Reduced Enrichment for Research and Test Reactors program and the Integrated Facility Disposition Project, respectively. While assessing data/analysis needs for LEU conversion such as the fuel cycle length and power needed to maintain the current level of reactor performance, a reduction of about 8% (~200 MWD) in the end-of-cycle exposure for HFIR fuel was observed over the lifetime of the reactor (43 years). The SCALE 6.0 computational system was used to evaluate discharged beryllium reflectors and it was discovered if the reflectors are procured according to the current HFIR standard, discharged reflectors would not be TRU waste, but the removable reflector (closest to core) would become TRU waste approximately 40 years after discharge. However, beryllium reflectors have been fabricated with a greater uranium content than that stipulated in the standard and these reflectors would be discharged as TRU waste.
Book Synopsis High Flux Isotope Reactor Preliminary Design Study by :
Download or read book High Flux Isotope Reactor Preliminary Design Study written by and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison of possible types of research reactors for the production of transplutonium elements and other isotopes indicates that a flux-trap reactor consisting of a beryllium-reflecteds light-water-cooled annular fuel region surrounding a light-water island provides the required thermal neutron fluxes at minimum cost. The preliminary desigu of such a reactor was carried out on the basis of a parametric study of the effect of dimensions of the island and fuel regions heat removal rates, and fuel loading on the achievable thermal neutmn fluxes in the island and reflector. The results indicate that a 12- to 14-cm- diam. island provides the maximum flux for a given power density. This is in good agreement with the US8R critical experiments. Heat removal calculations indicate that average power densities up to 3.9 Mw/liter are achievable with H/ sub 2/O-cooled, platetype fuel elements if the system is pressurized to 650 psi to prevent surface boiling. On this basis, 100 Mw of heat can be removed from a 14-cm-ID x 36-cm-OD x 30.5-cm-long fuel regions resulting in a thermal neutron flux of 3 x 1015 in the island after insertion of 100 g of Cm244 or equivalent. The resulting production of Cf252 amounts to 65 mg for a 1 1/2- year irradiation. Operation of the reactor at the more conservative level of 67 Mw, providing an irradiation flux of 2 x 1015 in the islands will result in the production of 35 mg of Cf252 per 18 months from 100 g of Cm244. A development program is proposed to answer the question of the feasibility of the higher power operation. In addition to the central irradiation facility for heavyelement productions the HFIR contains ten hydraulic rabbit tubes passing through the beryllium reflector for isotope production and four beam holes for basic research, Preliminary estimates indicate that the cost of the facility, designed for an operating power level of 100 Mw, will be approximately 2 million. (auth).
Book Synopsis High Flux Isotope Reactor (HFIR), Oak Ridge National Laboratory by :
Download or read book High Flux Isotope Reactor (HFIR), Oak Ridge National Laboratory written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the High Flux Isotope Reactor (HFIR) of the Oak Ridge National Laboratory. States as the HFIR's purpose to produce transplutonium elements for use in industry, medicine, and research. Specifies HFIR's neutron flux capacity of 3x19 E15 square centimeters per second while operating at 85 megawatts. Includes menu of useful information: Why Neutrons? - A guide for wandering neophytes, The 1994 Nobel Prize in Physics ..., Important Announcements, HFIR Neutron Scattering Facilities, Recent Research, Personnel, Application Forms for Beam Time, HFIR daily status and 60- day operating forecast, General User/Visitor information, and Other Neutron Sources of the World.
Book Synopsis The High Flux Isotope Reactor (HFIR) Control Computer Operating System by :
Download or read book The High Flux Isotope Reactor (HFIR) Control Computer Operating System written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Flux Isotope Reactor. Quarterly Report, October--December 1976 by :
Download or read book High Flux Isotope Reactor. Quarterly Report, October--December 1976 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Routine reactor operation with only three end-of-cycle shutdowns this quarter resulted in an on-stream time of 96.5 percent. Total on-stream time for the year was 93.8 percent. Basic operating data for the quarter are listed.
Book Synopsis Neutron Scattering at the High Flux Isotope Reactor (HFIR). by :
Download or read book Neutron Scattering at the High Flux Isotope Reactor (HFIR). written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the High Flux Isotope Reactor (HFIR) of the Oak Ridge National Laboratory. States as the HFIR's purpose to produce transplutonium elements for use in industry, medicine, and research. Specifies HFIR's neutron flux capacity of 3x19 E15 square centimeters per second while operating at 85 megawatts.
Book Synopsis High Flux Isotope Reactor Quarterly Report by : Oak Ridge National Laboratory. Operations Division
Download or read book High Flux Isotope Reactor Quarterly Report written by Oak Ridge National Laboratory. Operations Division and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Irradiation Research Capabilities at HFIR (High Flux Isotope Reactor) and ANS (Advanced Neutron Source). by :
Download or read book Irradiation Research Capabilities at HFIR (High Flux Isotope Reactor) and ANS (Advanced Neutron Source). written by and published by . This book was released on 1990 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of materials irradiation facilities exist in the High Flux Isotope Reactor (HFIR) and are planned for the Advanced Neutron Source (ANS) reactor. In 1986 the HFIR Irradiation Facilities Improvement (HIFI) project began modifications to the HFIR which now permit the operation of two instrumented capsules in the target region and eight capsules of 46-mm OD in the RB region. Thus, it is now possible to perform instrumented irradiation experiments in the highest continuous flux of thermal neutrons available in the western world. The new RB facilities are now large enough to permit neutron spectral tailoring of experiments and the modified method of access to these facilities permit rotation of experiments thereby reducing fluence gradients in specimens. A summary of characteristics of irradiation facilities in HFIR is presented. The ANS is being designed to provide the highest thermal neutron flux for beam facilities in the world. Additional design goals include providing materials irradiation and transplutonium isotope production facilities as good, or better than, HFIR. The reference conceptual core design consists of two annular fuel elements positioned one above the other instead of concentrically as in the HFIR. A variety of materials irradiation facilities with unprecedented fluxes are being incorporated into the design of the ANS. These will include fast neutron irradiation facilities in the central hole of the upper fuel element, epithermal facilities surrounding the lower fuel element, and thermal facilities in the reflector tank. A summary of characteristics of irradiation facilities presently planned for the ANS is presented. 2 tabs.
Book Synopsis The High Flux Isotope Reactor (HFIR) Cold Source Project at ORNL. by :
Download or read book The High Flux Isotope Reactor (HFIR) Cold Source Project at ORNL. written by and published by . This book was released on 1998 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of this project includes the development, design, procurement/fabrication, testing, and installation of all of the components necessary to produce a working cold source within an existing HFIR beam tube hole in the pressure vessel. All aspects of the cold source design will be based on demonstrated technology adapted to the HFIR design and operating conditions.
Book Synopsis High Flux Isotope Reactor Quarterly Report, July, August, and September of 1976 by :
Download or read book High Flux Isotope Reactor Quarterly Report, July, August, and September of 1976 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An extended shutdown to replace part of the beryllium reflector reduced the operating time for the quarter to 88 percent and the operating time for the year to 92.9 percent. The semiannual reactor component inspection was completed and the control plates were changed. Basic operating data for the quarter are listed.
Book Synopsis The ORNL High Flux Isotope Reactor and New Advanced Fuel Testing Capabilities by :
Download or read book The ORNL High Flux Isotope Reactor and New Advanced Fuel Testing Capabilities written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Department of Energy s High Flux Isotope Reactor (HFIR), located at the Oak Ridge National Laboratory (ORNL), was originally designed (in the 1960s) primarily as a part of the overall program to produce transuranic isotopes for use in the heavy-element research program of the United States. Today, the reactor is a highly versatile machine, producing medical and transuranic isotopes and performing materials test experimental irradiations and neutron-scattering experiments. The ability to test advanced fuels and cladding materials in a thermal neutron spectrum in the United States is limited, and a fast-spectrum irradiation facility does not currently exist in this country. The HFIR has a distinct advantage for consideration as a fuel/cladding irradiation facility because of the extremely high neutron fluxes that this reactor provides over the full thermal- to fast-neutron energy range. New test capabilities have been developed that will allow testing of advanced nuclear fuels and cladding materials in the HFIR under prototypic light-water reactor (LWR) and fast-reactor (FR) operating conditions.
Book Synopsis High Flux Isotope Reactor. Quarterly Report, January, February, and March of 1977 by :
Download or read book High Flux Isotope Reactor. Quarterly Report, January, February, and March of 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Routine reactor operation with four end-of-cycle shutdowns this quarter resulted in an on-stream time of 94.5 percent. The semiannual reactor-component inspection was completed, and the control plates were changed.
Book Synopsis Operating Manual for the High Flux Isotope Reactor by :
Download or read book Operating Manual for the High Flux Isotope Reactor written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Procedures are presented for reactor operation; instrumentation and control; reactor components; research facilities; cooling systems; containment heating, venting, and air conditioning; emergency procedures; waste systems; on-site utilities; records and data accumulation; auxiliary equipment; and technical specification requirements.
Book Synopsis Status of High Flux Isotope Reactor (HFIR) Post-restart Safety Analysis and Documentation Upgrades by :
Download or read book Status of High Flux Isotope Reactor (HFIR) Post-restart Safety Analysis and Documentation Upgrades written by and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The High Flux Isotope Reactor (HFIR), an experimental reactor located at the Oak Ridge National Laboratory (ORNL) and operated for the US Department of Energy by Martin Marietta Energy Systems, was shut down in November, 1986 after the discovery of unexpected neutron embrittlement of the reactor vessel. The reactor was restarted in April, 1989, following an extensive review by DOE and ORNL of the HFIR design, safety, operation, maintenance and management, and the implementation of several upgrades to HFIR safety-related hardware, analyses, documents and procedures. This included establishing new operating conditions to provide added margin against pressure vessel failure, as well as the addition, or upgrading, of specific safety-related hardware. This paper summarizes the status of some of the follow-on (post-restart) activities which are currently in progress, and which will result in a comprehensive set of safety analyses and documentation for the HFIR, comparable with current practice in commercial nuclear power plants. 8 refs.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309379210 Total Pages :205 pages Book Rating :4.3/5 (93 download)
Book Synopsis Reducing the Use of Highly Enriched Uranium in Civilian Research Reactors by : National Academies of Sciences, Engineering, and Medicine
Download or read book Reducing the Use of Highly Enriched Uranium in Civilian Research Reactors written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-02-12 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued presence of highly enriched uranium (HEU) in civilian installations such as research reactors poses a threat to national and international security. Minimization, and ultimately elimination, of HEU in civilian research reactors worldwide has been a goal of U.S. policy and programs since 1978. Today, 74 civilian research reactors around the world, including 8 in the United States, use or are planning to use HEU fuel. Since the last National Academies of Sciences, Engineering, and Medicine report on this topic in 2009, 28 reactors have been either shut down or converted from HEU to low enriched uranium fuel. Despite this progress, the large number of remaining HEU-fueled reactors demonstrates that an HEU minimization program continues to be needed on a worldwide scale. Reducing the Use of Highly Enriched Uranium in Civilian Research Reactors assesses the status of and progress toward eliminating the worldwide use of HEU fuel in civilian research and test reactors.
