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Geotechnical Studies Relevant To The Containment Of Underground Nuclear Explosions At The Nevada Test Site
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Book Synopsis Geotechnical Studies Relevant to the Containment of Underground Nuclear Explosions at the Nevada Test Site by :
Download or read book Geotechnical Studies Relevant to the Containment of Underground Nuclear Explosions at the Nevada Test Site written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy and the Department of Defense are actively pursuing a program of nuclear weapons testing by underground explosions at the Nevada Test Site (NTS). Over the past 11 years, scores of tests have been conducted and the safety record is very good. In the short run, emphasis is put on preventing the release of radioactive materials into the atmosphere. In the long run, the subsidence and collapse of the ground above the nuclear cavities also are matters of interest. Currently, estimation of containment is based mostly on empiricism derived from extensive experience and on a combination of physical/mechanical testing and numerical modeling. When measured directly, the mechanical material properties are obtained from short-term laboratory tests on small, conventional samples. This practice does not determine the large effects of scale and time on measured stiffnesses and strengths of geological materials. Because of the limited data base of properties and in situ conditions, the input to otherwise fairly sophisticated computer programs is subject to several simplifying assumptions; some of them can have a nonconservative impact on the calculated results. As for the long-term, subsidence and collapse phenomena simply have not been studied to any significant degree. This report examines the geomechanical aspects of procedures currently used to estimate containment of undergroung explosions at NTS. Based on this examination, it is concluded that state-of-the-art geological engineering practice in the areas of field testing, large scale laboratory measurements, and numerical modeling can be drawn upon to complement the current approach.
Book Synopsis The Containment of underground nuclear explosions. by :
Download or read book The Containment of underground nuclear explosions. written by and published by DIANE Publishing. This book was released on with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caging the Dragon written by and published by . This book was released on 1995 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Investigation of Containment of Underground Explosions by : J. C. Cizek
Download or read book Laboratory Investigation of Containment of Underground Explosions written by J. C. Cizek and published by . This book was released on 1982 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: In support of the DNA program for stemming and containment of underground nuclear tests, laboratory techniques were applied to investigate the mechanics of containing gases in cavities formed by underground nuclear explosions. One experimental technique uses constant flow rate hydrofracture from a central exploded cavity in a cylinder of geologic material or simulant externally pressurized to represent overburden. A second experimental technique uses the measurement of particle velocity in the material surrounding an exploded cavity to provide outward and rebound motion at several radii for geologic materials and simulants. Additional experimental techniques use direct measurements of the transient and long-term stress and strain surrounding an exploded cavity. Hydrofracture, particle velocity, stress, and strain results for a rock-matching grout representing saturated Nevada Test Site tuff show the following: A beneficial residual stress forms around and exploded cavity, and containment of gases is achieved at normal overburden. Permanent volume compression exists in the region surrounding an exploded cavity. Containment may be possible with depth-of-burial and overburden less than those of normal practice. Strain rate changes do not have significant effect on particle velocity when the scale factor is doubled.
Book Synopsis Technical Discussions of Offsite Safety Programs for Underground Nuclear Detonations by : Reynolds Electrical & Engineering Co. Administrative Publications Section
Download or read book Technical Discussions of Offsite Safety Programs for Underground Nuclear Detonations written by Reynolds Electrical & Engineering Co. Administrative Publications Section and published by . This book was released on 1969 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geologic Studies of Underground Nuclear Explosions Rainier and Neptune Final Report by : Thomas L. Thompson
Download or read book Geologic Studies of Underground Nuclear Explosions Rainier and Neptune Final Report written by Thomas L. Thompson and published by . This book was released on 1959 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. Office Of Techn Publisher :Hardpress Publishing ISBN 13 :9781314910353 Total Pages :100 pages Book Rating :4.9/5 (13 download)
Book Synopsis The Containment of Underground Nuclear Explosions... by : United States. Congress. Office Of Techn
Download or read book The Containment of Underground Nuclear Explosions... written by United States. Congress. Office Of Techn and published by Hardpress Publishing. This book was released on 2013-12 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Book Synopsis Development of Phenomenological Models of Underground Nuclear Tests on Pahute Mesa, Nevada Test Site - BENHAM and TYBO. by :
Download or read book Development of Phenomenological Models of Underground Nuclear Tests on Pahute Mesa, Nevada Test Site - BENHAM and TYBO. written by and published by . This book was released on 1999 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although it is well accepted that underground nuclear explosions modify the in situ geologic media around the explosion point, the details of these changes are neither well understood nor well documented. As part of the engineering and containment process before a nuclear test, the physical environment is characterized to some extent to predict how the explosion will interact with the in situ media. However, a more detailed characterization of the physical environment surrounding an expended site is needed to successfully model radionuclide transport in the groundwater away from the detonation point. It is important to understand how the media have been altered and where the radionuclides are deposited. Once understood, this information on modified geologic media can be incorporated into a phenomenological model that is suitable for input to computer simulations of groundwater flow and radionuclide transport. The primary goals of this study are to (1) identify the modification of the media at a pertinent scale, and (2) provide this information to researchers modeling radionuclide transport in groundwater for the US Department of Energy (DOE) Nevada Operations Office Underground Test Area (UGTA) Project. Results from this study are most applicable at near-field scale (a model domain of about 500 m) and intermediate-field scale (a model domain of about 5 km) for which detailed information can be maximized as it is incorporated in the modeling grids. UGTA collected data on radionuclides in groundwater during recent drilling at the ER-20-5 site, which is near BENHAM and TYBO on Pahute Mesa at the Nevada Test Site (NTS). Computer simulations are being performed to better understand radionuclide transport. The objectives of this modeling effort include: evaluating site-specific information from the BENHAM and TYBO tests on Pahute Mesa; augmenting the above data set with generalized containment data; and developing a phenomenological model suitable for input to groundwater flow and transport modeling efforts that describes the physical in situ environment after the BENHAM and TYBO nuclear explosions.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis The Influence of Clay and Water in Rocks on Containment of Underground Nuclear Explosions by : Norton Rimer
Download or read book The Influence of Clay and Water in Rocks on Containment of Underground Nuclear Explosions written by Norton Rimer and published by . This book was released on 1977 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a series of spherically symmetric calculations of the ground motions due to underground nuclear tests located in Nevada Test Site rocks of different clay and water contents. In particular, calculations of the Baneberry event, believed to be located in a rock of unusually high clay and water content, are compared with calculations for more typical NTS rocks. The Baneberry medium is thought to have considerably lower shear strength due to the abnormal clay and water contents. Calculations with these lower strengths showed far lower residual stress fields when compared to calculations for other media. A discussion of the relevance of these calculational results to containment is presented. (Author).
Book Synopsis Explosion-induced Fracture of Selected Announced Underground Nuclear Tests, Yucca Flat, Nevada Test Site, Nevada by : Florian Maldonado
Download or read book Explosion-induced Fracture of Selected Announced Underground Nuclear Tests, Yucca Flat, Nevada Test Site, Nevada written by Florian Maldonado and published by . This book was released on 1977 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Reports on Studies of the Geology, Hydrogeology and Hydrology at the Nevada Test Site, Nye County, Nevada, from 1951--1996 by :
Download or read book Bibliography of Reports on Studies of the Geology, Hydrogeology and Hydrology at the Nevada Test Site, Nye County, Nevada, from 1951--1996 written by and published by . This book was released on 1997 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nevada Test Site (NTS) was established in 1951 as a proving ground for nuclear weapons. The site had formerly been part of an Air Force bombing and gunnery range during World War II. Sponsor-directed studies of the geology, hydrogeology, and hydrology of the NTS began about 1956 and were broad based in nature, but were related mainly to the effects of the detonation of nuclear weapons. These effects included recommending acceptable media and areas for underground tests, the possibility of off-site contamination of groundwater, air blast and surface contamination in the event of venting, ground-shock damage that could result from underground blasts, and studies in support of drilling and emplacement. The studies were both of a pure scientific nature and of a practical applied nature. The NTS was the site of 828 underground nuclear tests and 100 above-ground tests conducted between 1951 and 1992 (U.S. Department of Energy, 1994a). After July 1962, all nuclear tests conducted in the United States were underground, most of them at the NTS. The first contained underground nuclear explosion was detonated on September 19, 1957, following extensive study of the underground effect of chemical explosives. The tests were performed by U.S. Department of Energy (DOE) and its predecessors, the U.S. Atomic Energy Commission and the Energy Research and Development Administration. As part of a nationwide complex for nuclear weapons design, testing and manufacturing, the NTS was the location for continental testing of new and stockpiled nuclear devices. Other tests, including Project {open_quotes}Plowshare{close_quotes} experiments to test the peaceful application of nuclear explosives, were conducted on several parts of the site. In addition, the Defense Nuclear Agency tested the effect of nuclear detonations on military hardware.
Book Synopsis Interdisciplinary Hydrogeologic Site Characterization at the Nevada Test Site by :
Download or read book Interdisciplinary Hydrogeologic Site Characterization at the Nevada Test Site written by and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nevada Test Site was established in 1950 as a continental area for testing nuclear devices. Hydrogeologic investigations began in earnest with the US Geological Survey mapping much of the area from 1960 to 1965. Since 1963, all nuclear detonations have been underground. Most tests are conducted in vertical shafts, but a small percentage are conducted in tunnels. The majority of detonation points are above the water table, primarily in volcanic rocks, but sometimes in alluvium. Hydrogeologic investigations began in earnest with the US Geological Survey's mapping of much of the NTS region from 1960 to 1965. Following the BANEBERRY test in December 1970, which produced an accidental release of radioactivity to the atmosphere, the US Department of Energy (then the Atomic Energy Commission) established the Containment Evaluation Panel (CEP). Results of interdisciplinary hydrogeologic investigations for each test location are included in a Containment Prospectus which is thoroughly reviewed by the CEP.
Book Synopsis Laboratory Studies of Containment in Underground Nuclear Tests by : J. C. Cizek
Download or read book Laboratory Studies of Containment in Underground Nuclear Tests written by J. C. Cizek and published by . This book was released on 1979 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the DNA stemming and containment program for underground nuclear testing, laboratory studies were performed to further develop and apply experimental techniques for assessing the effects on containment of the residual stress field surrounding an exploded cavity. A comparison of hydrofracture pressures for exploded and unexploded cavities revealed the existence of this stress field. Experimental parameter studies were conducted to provide an understanding of the mechanisms controlling containment. Sensors were developed to generate quantitative estimates of crack growth, fluid motion, and the states of stress and strain in the region surrounding a cavity during hydrofracture. The data generated provide results suitable for development of new containment theories as well as for correlation with predictions of existing computer codes. Hydrofracture pressure records were simulated by applying classical fracture mechanics theory.
Book Synopsis Underground Nuclear Testing at the Nevada Test Site by :
Download or read book Underground Nuclear Testing at the Nevada Test Site written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Investigation of Containment in Underground Nuclear Tests by : J. C. Cizek
Download or read book Laboratory Investigation of Containment in Underground Nuclear Tests written by J. C. Cizek and published by . This book was released on 1981 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: In support of the DNA program for stemming and containment of underground nuclear tests, existing laboratory techniques were further developed and applied to investigate the mechanics of containing gases in cavities formed by underground nuclear explosions. The experimental procedure includes constant flow rate hydrofracture from a central exploded cavity in an externally pressurized grout sphere simulating a geologic material subjected to overburden. The experiments provide hydrofracture records consisting of the time history of cavity pressure as fluid is pumped into the cavity. Hydrofracture records for exploded cavities, which have a surrounding residual stress field, are compared with those for unexploded cavities, which have no residual stress field, to assess the potential benefit to containment of the residual stress field.
Book Synopsis Proceedings of the Sixth Symposium on Containment of Underground Nuclear Explosions, Lawlor Events Center, University of Nevada, Reno, Nevada, September 24-27, 1991 by :
Download or read book Proceedings of the Sixth Symposium on Containment of Underground Nuclear Explosions, Lawlor Events Center, University of Nevada, Reno, Nevada, September 24-27, 1991 written by and published by . This book was released on 1992* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
