Author: R. V. GuzowskiPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Preliminary Identification of Potentially Disruptive Scenarios at the Greater Confinement Disposal Facility, Area 5 of the Nevada Test Site
Author: R. V. GuzowskiUse of a Scenario-development Procedure to Identify Potentially Disruptive Scenarios, Greater Confinement Disposal Facility, Area 5, Nevada Test Site
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
The Greater Confinement Disposal (GCD) facility includes four boreholes that contain transuranic (TRLT) waste. Presence of the TRU waste means that this facility must comply with the US Environmental Protection Agency's Environmental Radiation Protection Standards for Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Waste-Final Rule 40 CFR Part 191. To comply with the Containment Requirements of this rule, all potentially disruptive events and processes, and by implication all potentially disruptive combinations of events and processes (scenarios), must be identified for possible inclusion in performance assessments. Screening of the FEPs identified four events for scenario development: exploratory drilling for natural resources, drilling withdrawal wells, irrigation, and subsidence. Recent environmental-isotope analyses of the vadose zone suggest that radionuclide transport from the boreholes to the water table by infiltration is not a feasible transport mechanism within the time frame of regulatory concern. For this reason, the event of drilling withdrawal wells was merged with exploratory drilling for resources. The descriptions of the remaining three events were modified slightly to aid in estimation of event probabilities and consequence analyses. The three events are: exploratory drilling for resources penetrates a TRU borehole, irrigation occurs at the Radioactive Waste Management Site (RWMS), and subsidence occurs at the RWMS. Use of a logic diagram with these three events resulted in the construction of eight scenarios, including base-case (undisturbed) conditions. Screening these scenarios at this stage of scenario development was beyond the scope of this task. Based on the implementation assumptions, this scenario-development procedure produced a comprehensive set of mutually exclusive scenarios that are reproducible and auditable for use in GCD performance assessments.
Nevada Test Site (NTS) and Off-site Locations in the State of Nevada, Tonopah Test Range, Portions of the Nellis AFB Range (NAFR) Complex, the Central Nevada Test Area, and Shoal Area, Nye County
Author: Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste
Author: Michael J AptedPublisher: Woodhead Publishing
ISBN: 0081006527
Category : Technology & Engineering
Languages : en
Pages : 804
Book Description
Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste, Second Edition, critically reviews state-of-the-art technologies and scientific methods relating to the implementation of the most effective approaches to the long-term, safe disposition of nuclear waste, also discussing regulatory developments and social engagement approaches as major themes. Chapters in Part One introduce the topic of geological disposal, providing an overview of near-surface, intermediate depth, and deep borehole disposal, spanning low-, medium- and high-level wastes. Part Two addresses the different types of repository systems – crystalline, clay, and salt, also discussing methods of site surveying and construction. The critical safety issue of engineered barrier systems is the focus of Part Three, with coverage ranging from nuclear waste canisters, to buffer and backfill materials. Lastly, Parts Four and Five focus on safety, security, and acceptability, concentrating on repository performance assessment, then radiation protection, environmental monitoring, and social engagement. Comprehensively revised, updated, and expanded with 25% new material on topics of current importance, this is the standard reference for all nuclear waste management and geological repository professionals and researchers. Contains 25% more material on topics of current importance in this new, comprehensive edition Fully updated coverage of both near-surface/intermediate depth, and deep borehole disposal in one convenient volume Goes beyond the scientific and technical aspects of disposal to include the political, regulatory, and societal issues involved, all from an international perspective
Energy Research Abstracts
Author: Radioactive Waste Management
Author: Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 536
Book Description
Disposal of Radioactive Wastes in Deep Repositories
Author: Royal Society (Great Britain)Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 220
Book Description
How can it be demonstrated, within reasonable bounds, that radionuclides from radioactive waste buried in a repository deep underground will not make their way back to the surface over the next million years and endanger human beings then living there? That is the challenge facing Nirex, the company owned by the main producers of radioactive waste and charged with defining and implementing an acceptable disposal strategy. In order to address it, Nirex is conducting a major research programme involving scientists and engineers from many disciplines. Nirex also invited the Royal Society to conduct an independent review of this programme.
Greater Confinement Disposal of High Activity and Special Case Wastes at the Nevada Test Site
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
The Department of Energy's Nevada Field Office has disposed of a small quantity of high activity and special case wastes using Greater Confinement Disposal facilities in Area 5 of the Nevada Test Site. Because some of these wastes are transuranic radioactive wastes, the Environmental Protection Agency standards for their disposal under 40 CFR Part 191 which requires a compliance assessment. In conducting the 40 CFR Part 191 compliance assessment, review of the Greater Confinement Disposal inventory revealed potentially land disposal restricted hazardous wastes. The regulatory options for disposing of land disposal restricted wastes consist of (1) treatment and monitoring, or (2) developing a no-migration petition. Given that the waste is already buried without treatment, a no-migration petition becomes the primary option. Based on a desire to minimize costs associated with site characterization and performance assessment, a single approach has been developed for assessing compliance with 40 CFR Part 191, DOE Order 5820.2A (which regulates low-level radioactive wastes contained in Greater Confinement Disposal facilities) and developing a no-migration petition. The approach consists of common points of compliance, common time frame for analysis, and common treatment of uncertainty. The procedure calls for conservative bias of modeling assumptions, including model input parameter distributions and adverse processes and events that can occur over the regulatory time frame, coupled with a quantitative treatment of data and parameter uncertainty. This approach provides a basis for a defensible regulatory decision. In addition, the process is iterative between modeling and site characterization activities, where the need for site characterization activities is based on a quantitative definition of the most important and uncertain parameters or assumptions.
Preliminary Performance Assessment of the Greater Confinement Disposal Facility at the Nevada Test Site
Author: High Level Radioactive Waste Management
Author: Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 720
Book Description