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Book Radioactive Waste Management

Download or read book Radioactive Waste Management written by and published by . This book was released on 1996-05 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Government Reports Announcements Index

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book New Publications of the U S Geological Survey

Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 1985 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book New Publications of the Geological Survey

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1985 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Results of Chemical Analyses in Support of Yucca Mountain Studies

Download or read book Results of Chemical Analyses in Support of Yucca Mountain Studies written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground water monitoring for the Nye County Early Warning Drilling Program (NCEWDP) was established to monitor underground water sources of the area and to protect communities surrounding the Nevada Test Site (NTS) from potential radionuclide contamination of these water sources. It provides hydrological information pertaining to groundwater flow patterns and recharge issues in the vicinity of Yucca Mountain. The Harry Reid Center for Environmental Studies (HRC) obtained groundwater samples from select NCEWDP wells shown in Figure 1. These samples were analyzed for major cations, major anions, trace elements, rare earth elements, alkalinity, pH and conductivity. These geochemical results can be used to evaluate the degree of interaction between the aquifers sampled, leading to a thorough mapping of the aquifer system. With increased analysis down gradient of the Yucca Mountain area, evaluations can identify viable groundwater flow paths and establish mixing of the groundwater systems. Tracer tests provide insight into groundwater flow characteristics and transport processes of potential contaminants. These tests are important for contaminant migration issues including safe disposal of hazardous and radioactive materials and remediation of potentially released contaminants. At a minimum, two conservative (non-sorbing) tracers with different diffusion coefficients are used for each tracer test. The tracer test performed under this cooperative agreement utilized fluorinated benzoic acids and halides as conservative tracers. The tracers are of differing size and have differing rates of diffusion into the rock. Larger molecules can not enter the pore spaces that are penetrated by the smaller molecules, therefore larger tracers will travel faster through thegroundwater system. Identical responses of the two tracers indicate no appreciable diffusion into pores of the aquifer system tuff. For the Nye County Tracer Tests, the HRC provided chemical analysis for the tracer test being conducted at site 22. Samples were analyzed for multiple tracers throughout the testing period.

Book Final Report on Feasibility of Real time Geochemical Analysis at Yucca Mountain Nevada Using LIBS Technology

Download or read book Final Report on Feasibility of Real time Geochemical Analysis at Yucca Mountain Nevada Using LIBS Technology written by James D. Blacic and published by . This book was released on 1996 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-induced breakdown spectroscopy (LIBS) is an analytic method whereby an intense laser pulse is used to vaporize and excite a small volume of material into atomic emission. Calibrated spectral analysis of the laser spark light provides detection and quantification of the elemental composition of the target material. We performed laboratory and field tests to assess the feasibility of developing field-portable LIBS-based instruments for real-time analyses of Yucca Mountain rocks in conjunction with Yucca Mountain Project drilling, coring, sampling, and characterization tasks. We developed one prototype instrument designed to analyze air core drilling dust and another prototype instrument designed to analyze rock and fracture surfaces. In realistic field tests at the Exploratory Studies Facility at Yucca Mountain, Nevada, we demonstrated that the LIBS prototypes are capable of measuring major, minor, and some trace elements in real time.

Book Yucca Mountain Drift Scale Test Progress Report

Download or read book Yucca Mountain Drift Scale Test Progress Report written by and published by . This book was released on 1999 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Drift Scale Test (DST) is part of the Exploratory Studies Facility (ESF) Thermal Test being conducted underground at the potential high-level nuclear waste repository at Yucca Mountain, Nevada. The purpose of the ESF Thermal Test is to acquire a more in-depth understanding of the coupled thermal, mechanical, hydrological, and chemical processes likely to be encountered in the rock mass surrounding the potential geological repository at Yucca Mountain. These processes are monitored by a multitude of sensors to measure the temperature, humidity, gas pressure, and mechanical displacement, of the rock formation in response to the heat generated by the heaters. In addition to collecting passive monitoring data, active hydrological and geophysical testing is also being carried out periodically in the DST. These active tests are intended to monitor changes in the moisture redistribution in the rock mass, to collect water and gas samples for chemical and isotopic analysis, and to detect microfiacturing due to heating. On December 3, 1998, the heaters in the DST were activated. The planned heating phase of the DST is 4 years, and the cooling phase following the power shutoff will be of similar duration. The present report summarizes interpretation and analysis of thermal, hydrological, chemical, and geophysical data for the first 6 months; it is the first of many progress reports to be prepared during the DST.

Book Origine but et fonctionnement de l Union conomique Benelux

Download or read book Origine but et fonctionnement de l Union conomique Benelux written by and published by . This book was released on with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book DATA QUALIFICATION REPORT

Download or read book DATA QUALIFICATION REPORT written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This DQR uses the technical assessment methods according to Attachment 2 of AP-SIII. 2QY Rev. 0, ICN 3, to qualify DTN LADB831321AN98.002. The data addressed in this DQR have been cited in CRWMS M & O (2000b) to support the Site Recommendation in determining the suitability of Yucca Mountain as a repository for high level nuclear waste. CRWMS M & O (2000b) refers to mineral analyses that are unqualified. Within the context of this DQR, the term mineral analyses includes: (1) the determination of the identity of specific crystalline phases from the Yucca Mountain Site by X-ray diffraction (XRD) analysis, as well as, (2) determination of mineral abundance as a percentage of the total mineral content of samples collected from drill core, side wall core and drill cuttings. These data are used among other purposes to define the spatial distribution of minerals at the Yucca Mountain Site, for correlation with geologic properties, and may be used as input in developing both unsaturated and saturated zone flow and transport models for the YMP Total System Performance Assessment. This DQR evaluates the unqualified data within DTNs within the context of supporting such kinds of studies on the YMP. The unqualified data considered in this DQR were identified and directly used in CRWMS M & O (2000b) in which the mineral analyses are used to create three-dimensional representations of mineral distributions. The purpose of this DQR is to recommend data that can be cited as qualified for use in technical products to support the License Application. The qualified data were placed in new DTNs generated as a result of the evaluation. The appropriateness and limitations (if any) of the data with respect to intended use are addressed in this DQR. In accordance with Attachment 1 of procedure AP-3.15Q, Rev. 3, ICN 2, ''Managing Technical Product Inputs'', it has been determined that the unqualified mineral abundance data for core material are not used in the direct calculation of Principal Factors for post closure safety or disruptive events.

Book Yucca Mountain Transportation Routes

Download or read book Yucca Mountain Transportation Routes written by and published by . This book was released on 1991 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents appendices related to the preliminary assessment and risk analysis for high-level radioactive waste transportation routes to the proposed Yucca Mountain Project repository. Information includes data on population density, traffic volume, ecologically sensitive areas, and accident history.

Book Energy Research Abstracts

Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 1684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Seismic Study of Yucca Mountain and Vicinity Southern Nevada Data Report and Preliminary Results

Download or read book A Seismic Study of Yucca Mountain and Vicinity Southern Nevada Data Report and Preliminary Results written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1980 to 1982, the US Geological survey conducted seismic refraction studies at the Nevada Test Site to aid in an investigation of the regional crustal structure at a possible nuclear waste repository site near Yucca Mountain. Two regionally distributed deployments and one north-south deployment recorded nuclear events. First arrival times from these deployments were plotted on a location map and contoured to determine traveltime delays. The results indicate delays as large as 0.5 s in the Yucca Mountain and Crater Flat areas relative to the Jackass Flats area. A fourth east-west deployment recorded a chemical explosion and was interpreted using a two-dimensional computer raytracing technique. Delays as high as 0.7 s were observed over Crater Flat and Yucca Mountain. The crustal model derived from this profile indicates that Paleozoic rocks, which outcrop to the east at Skull Mountain and the Calico Hills, and to the west at Bare Mountain, lie at a minimum depth of 3 km beneath part of Yucca Mountain. These results confirm earlier estimates based on the modeling of detailed gravity data. A mid-crustal boundary at 15+- 2 km beneath Yucca Mountain is evidenced by a prominent reflection recorded beyond 43 km range at 1.5 s reduced time. Other mid-crustal boundaries have been identified at 24 and 30 km and the total crustal thickness is 35 km. 8 refs., 11 figs., 1 tab.

Book Distribution of Potentially Hazardous Phases in the Subsurface at Yucca Mountain Nevada

Download or read book Distribution of Potentially Hazardous Phases in the Subsurface at Yucca Mountain Nevada written by and published by . This book was released on 1995 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drilling, trenching, excavation of the Exploratory Studies Facility, and other surface and underground-distributing activities have the potential to release minerals into the environment from tuffs at Yucca Mountain, Nevada. Some of these minerals may be potential respiratory health hazards. Therefore, an understanding of the distribution of the minerals that may potentially be liberated during site-characterization and operation of the potential repository is crucial to ensuring worker and public safety. Analysis of previously reported mineralogy of Yucca Mountain tuffs using data and criteria from the International Agency for Research on Cancer (IARC) suggests that the following minerals are of potential concern: quartz, cristobalite, tridymite, opal-CT, erionite, mordenite, and palygorskite. The authors have re-evaluated the three-dimensional mineral distribution at Yucca Mountain above the static water level both in bulk-rock samples and in fractures, using quantitative X-ray powder diffraction analysis. Erionite, mordenite, and palygorskite occur primarily in fractures; the crystalline-silica minerals, quartz, cristobalite, and tridymite are major bulk-rock phases. Erionite occurs in the altered zone just above the lower Topopah Spring Member vitrophyre, and an occurrence below the vitrophyre but above the Calico Hills has recently been identified. In this latter occurrence, erionite is present in the matrix at levels up to 35 wt%. Mordenite and palygorskite occur throughout the vadose zone nearly to the surface. Opal-CT is limited to zeolitic horizons.