Geological engineering aspects of the conceptual design of a radioactive waste vault in hard crystalline rock

Abstract Addressing a current operating and environmental concern, this paper first presents an overview of the design program for an underground radioactive waste storage vault. It then reviews the construction, operational and thermal-mechanical aspects of such a project. The relevant experience from major underground construction projects is reviewed, and the paper concludes with brief comments on the design-oriented research and development requirements.
Keywords: Waste disposal, Radioactive waste, Environmental control, Underground storage, Vault design, Rock mechanics.
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Summary: This paper provides background information on the expansion programs of Rio Algom Limited at Elliot Lake. Included are details on the Quirke expansion program, the Panel mine rehabilitation program, including the selection procedure for the tailings containment area, the Stanleigh mine rehabilitation program, housing, government regulations and the Environmental Assessment Board hearings.
Publication: CIM Bulletin
Author(s): K. B. CULVER
Keywords: Hydrometallurgy, Rio Algom, Elliot Lake, Preston Mines, Quirke mine, Panel mine, Stanleigh mine, Housing, Licencing, Environmental Assessment Board.
Issue: 819
Volume: 73
Year: 1980
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Summary: A 28-year study of cross folds leads to the conclusion that the northwest-southeast folds recognized in many areas of North America are part of a regional pattern. Detailed examination of over 650 geological maps and reports of Ontario indicates that this folding can be traced across the province. Evidence is presented that this fold pattern played an important part in determining the pattern and scale of intrusion, that its recognition in the field can aid in defining stratigraphy, folding...
Publication: CIM Bulletin
Author(s): S.V. BURR
Keywords: Structural geology, Economic geology, Folding, Ontario, Porcupine area, Red Lake area, Manitou Lake area, Elliot Lake area, Cobalt, Uranium, Thorium, Nickel, Gold.
Issue: 819
Volume: 73
Year: 1980
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Summary: Monometallic zinc mineralization associated with marbles of the Grenville Supergroup in the Mont-Laurier Basin of Quebec is found to be stratiform and to occur (1) within limited zones ofdolomitic marble and (2) more precisely along contacts between these marbles and adjacent metaclastic units. Massive sphalerite with accompanying pyrrhotite and pyrite is the prime exploration target, and commonly gives rise to good geochemical anomalies, but generally weak and ambiguous geophysical responses...
Publication: CIM Bulletin
Author(s): M. GAUTHIER, A.C. BROWN
Keywords: Stratiform deposits, Zinc, Grenville, Marble, Dolomite, Exploration, Geochemistry, Geophysics, Mont-Laurier Basin.
Issue: 819
Volume: 73
Year: 1980
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Summary: Background information relative to the concerns for diesel paniculate emissions is reviewed. A review of the most advanced methods for measuring ambient levels of diesel pollutants is presented. Measured pollutant levels in two metal mines are summarized, including a ranking of pollutants based on their measured levels. The measured levels are related to the "health effects index".The various methods of controlling miner exposure to pollutant levels are reviewed. The control...
Publication: CIM Bulletin
Author(s): JOHN H. JOHNSON
Keywords: Diesel equipment, Underground mining, Exhaust control, Particulate emissions, Pollutants, Quantizer, White Pine Mine, Brushy Creek Mine, Ventilation, Mine safety, Health.
Issue: 819
Volume: 73
Year: 1980
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Summary: This paper describes the recent pilot-plant work carried out on two alternative processes capable of producing an effluent containing less than 10 pCi/L total radium-226 activity and very close to 3 pd/L dissolved radium-226. The processes incorporate coprecipitation of radium with barium sulphate by the addition of barium chloride in continuously stirred tank reactors followed by either chemical coagulation with ferric chloride, flocculation and clarification, or polymer-aided dual-media...
Publication: CIM Bulletin
Author(s): D. MOFFETT, L. WHITTLE, D. AVERILL, G. KASSAKHIAN, R. WEBBER
Keywords: Hydrometallurgy, Radium, Uranium mill effluents, Environmental control, Tailings ponds, Barium chloride, Quirke mine, Precipitation, Flocculation, Clarification, Sand filters.
Issue: 819
Volume: 73
Year: 1980
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Summary: Concerns over possible additional involvement of governments in Canada's mining industry and its adverse effects on the industry's growth were a frequent topic of conversation at the recent Annual General Meeting of the CIM.Still painfully fresh in the minds of industry leaders are the disastrous results of the federal/provincial scramble over resource revenues which followed the relatively high metal prices witnessed in 1973/1974. At current metal prices, it is not surprising, then, that a...
Publication: CIM Bulletin
Author(s): R.D. BROWN
Issue: 819
Volume: 73
Year: 1980
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Summary: Laboratory-scale hydrochloric acid leach tests were conducted on an Elliot Lake uranium ore. Hydrochloric acid leaches without an oxidant or with molecular oxygen (i.e., air or pure oxygen gas) as an oxidant favoured uranium and radium extractions. Conditions for maximum uranium, thorium and radium extractions with hydrochloric acid in the presence of sodium chlorate were determined. The highest extractions of uranium (96%), thorium (81%) and radium (91%) were obtained using a mixture of 44.0...
Publication: CIM Bulletin
Author(s): K.E. HAQUE, B.H. LUCAS, G.M. RITCEY
Keywords: Hydrometallurgy, Extractive metallurgy, Leaching, Hydrochloric acid leaching, Uranium extraction, Elliot Lake, Thorium extraction, Radium extraction, Ore processing, Environmental control.
Issue: 819
Volume: 73
Year: 1980
Text
Summary: There are a number of nitrate-containing wastewater sources, as concentrated as 30 wt% NO3- and as large as 2000 m3/day, in the nuclear fuel cycle. The biological reduction of nitrate in wastewater to gaseous nitrogen, accompanied by the oxidation of a nutrient carbon source to gaseous carbon dioxide, is an ecologically sound and cost-effective method of nitrate waste disposal.These nitrate-containing wastewater sources can be successfully biologically denitrified to meet discharge standards...
Publication: CIM Bulletin
Author(s): W.W. PUT
Keywords: Hydrometallurgy, Biological reduction, Reduction, Nitrate wastewater, Bioreactors, Fluidized-bed bioreactors, Denitrification, Effluent treatment.
Issue: 819
Volume: 73
Year: 1980
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