2 edition of protection of uranium tailings impoundments against overland erosion found in the catalog.
protection of uranium tailings impoundments against overland erosion
W. H. Walters
by Division of Radiation Programs and Earth Sciences, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission in Washington, D.C
Written in English
|Statement||prepared by W.H. Walters, R. L. Skaggs.|
|Contributions||Skaggs, R. L., U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Radiation Programs and Earth Sciences., Pacific Northwest Laboratory.|
|The Physical Object|
|Pagination||xi, 48 p. :|
|Number of Pages||48|
(e.g., to test study hypotheses) because of their ecological study design. • The decay products of uranium (e.g., Th, Ra) provide a constant source of radiation in uranium tailings for thousands of years, substantially outlasting the current U.S. regulations for oversight of processing facility tailings. • Radionuclides are not the only uranium mining- and processing-associated. This study investigates the problems involved in designing protection methods to prevent erosion of a uranium tailings impoundment cover from rainfall and runoff (overland flow) processes.
The USEPA has promulgated 40 CFR P Subpart W, to protect the public and the environment from the emission of radon from uranium mills and their tailings. 11 This standard limits the radon emissions rate to 20 picocuries per square meter per second, and requires that new tailings impoundments meet one of the two following requirements: 1. Although percent of the uranium in the ore is extracted during processing (thus reducing uranium concentrations by at least an order of magnitude), most of the uranium decay products (e.g., Th, Ra, Rn), which may comprise the majority of the total radioactivity of the ore, stay in the tailings (Hebel et al., , Van Metre.
Environmental Consequences of Uranium Mining: A Submission to the Joint Federal/Provincial Environmental Assessment Panel Reviewing Five Uranium Mines in Northern Saskatchewan. Operating Uranium Mill Tailings (Clean Air Act) • 40 CFR 61 Subpart W requirements apply to facilities licensed to manage uranium byproduct materials during and following the processing of uranium ores • Limit on number/size of impoundments • Phased Disposal – lined impoundments no more than 40 acres, no more than two in operation at.
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Get this from a library. The protection of uranium tailings impoundments against overland erosion. [W H Walters; R L Skaggs; U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Radiation Programs and Earth Sciences.; Pacific Northwest Laboratory.].
Pacific Northwest Laboratory (PNL) prepared this report to assist in the design and review of erosion protection works for decommissioned uranium tailings impoundments. The major causes of erosion over the long-term decommissioning period are from rainfall-runoff (overland flow) and stream channel flooding.
The Pacific Northwest Laboratory (PNL) is studying the problem of long-term protection of earthen covers on decommissioned uranium tailings impoundments. The major erosive forces acting on these covers will be river flooding and overland flow from rainfall-runoff.
This report reviews design considerations for protective covers for uranium mill tailings impoundments. The role of protective covers in tailings containment systems is discussed. Factors affecting the long-term stabilization of tailings (erosion, biotic intrusion, and soil moisture) are summarized.
Standards for Operating Mill Tailings,” limits radon emissions from uranium byproduct material or tailings at operating uranium recovery facilities. EPA originally issued Subpart W in (54 FRDecem ). AILINGS. The updated standards limit the radon releases to the ambient air from the normal operations of facilities.
The aim of the CRP on the long term stabilization of uranium mill tailings was to contribute to the development of conceptual, technical, and management solutions that: render tailings more inert over prolonged time-spans; render impounded materials and.
mill tailings are not legally considered TENORM in the United States, this phase of the uranium fuel cycle is described in the reports, and their locations included in the database in part because radiation protection standards for the tailings impoundments may have applicability to waste disposal for uranium mine TENORM wastes.
PREFACE The Environmental Protection Agency (EPA) is amending 40 CFRSubpart D, dealing with disposal of uranium mill tailings at non-operational sites licensed by the Nuclear Regulatory Commission (NRC) or an Agreement State pursuant to the Uranium Mill Tailings Radiation Control Act (UMTRCA) of (42 U.S.C.).
The TCM on Technologies for the Treatment of Effluents from Uranium Mines, Mills and Tailings was held in Vienna from 1 to 4 November and was attended by twelve participants from eleven countries.
Ten papers were presented covering effluent treatment at operating mines and at facilities that are being decommissioned.
Remediation of uranium production facilities encompasses activities to restore areas including mines, mills, waste management facilities, tailings containment, and land and water resources. At the outset of a remediation programme, the final land use for the site is agreed with the stakeholders.
The report includes the design and review of erosion protection works for decommissioned uranium tailings impoundments. The major causes of erosion over the long-term decommissioning period are from rainfall-runoff (overland flow) and stream channel flooding.
Protection of uranium tailings impoundments against overland erosion Article Unsteady flow model of Priest Rapids Dam releases at Hanford Reach, Columbia River, Washington. The southern oligarchy: an appeal in behalf of the silent masses of our country against the despotic r Eva's man / Gayl Jones; The protection of uranium tailings impoundments against overland erosion [microform] / prepared by W.H.
in above ground surface impoundments. In situ leaching is an alternative method of extracting uranium and thorium.
This process does not physically remove the host material from its underground location, but preferentially extracts the uranium by solution mining and leaves the ‘tailings’ in their original subterranean location.
This emphasis will include a summary of the uranium mining processes, the chemical properties of uranium, and the adverse health effects uranium mill tailings pose to the environment and humans. Legislation passed regarding the handling of tailings are a result of the aforementioned points, and therefore, are pertinent to understanding the.
environmental contamination from uranium production facilities and their remediation proceedings of an international workshop on environmental contamination from uranium production facilities and their remediation organized by the international atomic energy agency and held in lisbon, 11–13 february international atomic energy agency.
USA. USA, Federal. U.S. Congress: Uranium Mill Tailings Radiation Control Act - UMTRCA U.S. Congress: Radiation Exposure Compensation Act - RECA U.S. EPA: 40 CFR Part - Health and Environmental Protection Standards for Uranium and Thorium Mill Tailings: Retrieve HTML text U.S.
EPA: 40 CFR Part - Environmental Radiation Protection Standards for Nuclear Power. rehabilitating uranium tailings impoundments. It presents a range of current options for impoundment of tailings from uranium mills. In presenting this material, account has been taken of the various influences which could determine the best practicable technology applicable to a particular.
associated with the ore. Uranium mill tailings, for almost exclusively in Western States, were produced at approximately 50 sites around the USA.
Of those, 24 tailings sites are covered in DOE’s UMTRAP program. Uranium mill tailings have been undergoing a federally required clean-up program since. The mill tailings at the uranium mill facility will be protected from flooding and erosion by an engineered rock riprap layer that has been designed in accordance with the guidance suggested by the staff.
Flood analyses presented by the licensee demonstrate that. The exploration of uranium and radium began in Portugal in and lasted untilwhen the uranium mines closed. Wastes from mining, ore milling and processing contain radioactive elements, which can be spread to soils, surface and groundwaters around the mining areas.
The concentration of radionuclides can locally attain levels toxic to.This chapter discusses the laws, regulations, and policies—and the relevant federal agencies—that are applicable to uranium mining, processing, reclamation, and long-term stewardship.
Because of Virginia’s moratorium on uranium mining, Virginia state agencies have not been permitted to develop a modern state-specific regulatory environment. However, to the extent possible, the Virginia.EPA’s REGULATORY RESPONSIBILITIES for URANIUM MINING and MILLING NAS/NRC Committee on Uranium Mining in Virginia Washington, DC.
Octo Loren Setlow, CPG U.S Environmental Protection Agency Office of Radiation and Indoor Air Radiation Protection Division (J) Washington, DC Active new uranium mill tailings impoundments.