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Saturday, August 1, 2020 | History

2 edition of Decommissioning of the B-zone waste rock pile found in the catalog.

Decommissioning of the B-zone waste rock pile

Margarete A. Kalin

Decommissioning of the B-zone waste rock pile

1996 final report

by Margarete A. Kalin

  • 205 Want to read
  • 10 Currently reading

Published by Boojum Research in Toronto, Ont .
Written in English


About the Edition

Report examines the options for decommissioning, focusing on the waste rock pile and its impact on the environment.

Edition Notes

Other titlesB-zone waste rock pile, 1996 final report
Statementfor CAMECO Corporation by M. Kalin and M.P. Smith
SeriesBoojum Research Final Reports -- CA077, CA078, CA079., Boojum Research Technical reports, Boojum Research Technical reports
ContributionsSmith, M. P., CAMECO Corporation.
The Physical Object
Pagination1 v. :
ID Numbers
Open LibraryOL22240646M

Cover and final landform design for the B-zone waste rock pile at Rabbit Lake Mine.- A GPS-Based System for Radium/Uranium Contamination Gamma Scanning.- Use of underground excavated space for disposal of low radioactive mining waste resulted from uranium ore exploitation. Study case WASTE ROCK DUMP DECOMMISSIONING AT MINES IN NORTHERN WESTERN AUSTRALIA Gordon McPhail Daniel Wilkinson Metago Environmental Engineers (Australia) Pty Ltd 15 Bowman Street South Perth WA ABSTRACT Mine waste rock dumps in northern Western Australia are frequently some m high with bench faces of up to 60 m in height. The dumps are located.

The Collins Bay B-Zone pit – Following extensive decommissioning studies, the special waste (which contains elevated arsenic, nickel, sulphur, or uranium content) was placed in the bottom of the pit and the pit was flooded, creating a pit lake. Modern mitigation techniques for waste rock disposal would also include (1) careful siting of waste rock piles and construction of drainage ditches to facilitate collection of leachates; (2) isolation and burial of waste rock with high potential for contamination in low permeability strata to minimize interactions with water and air; and (3) if.

"Decontamination and Decommissioning of the Uranium Mill and Processing Plant at Seelingstaedt, Germany." Proceedings of the The 11th International Conference on Environmental Remediation and Radioactive Waste Management. 11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B. Bruges, Belgium. The Commission notes that the decision on whether to permit the remediation of the B-Zone pit, waste rock pile, and ore storage pad will be made by the Commission following a public hearing on the matter. > View CNSC News release Oct. 24, > Download Updated Meeting Agenda: J .


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Decommissioning of the B-zone waste rock pile by Margarete A. Kalin Download PDF EPUB FB2

Boojum Research Limited B-Zone Waste Rock Pile March i Final Report Executive Summary The B-Zone Waste Rock Pile consist of million m 3 of waste rock generated from the pit operation between and Decommissioning plans for the waste rock pile are.

Cameco is developing a decommissioning plan for the B-zone area at Rabbit Lake Mine, which includes a flooded open pit, a waste rock pile, and an ore stor-age pad.

Proper closure of the B-zone waste rock pile (BZWRP) will be important. Waste rock management – operational management of waste rock focuses on minimizing the short-term interaction of waste rock stockpiles with the local environment, while evaluating and implementing, where appropriate, long-term reclamation and decommissioning plans.

Seepage collection and treatment systems are used to collect and control any potentially contaminated runoff water, while. waste rock pile and adjacent regions. The studied uranium waste rock pile, named Bota-Fora 4 (BF4), is located in the ore Treatment Unit of Caldas (UTM), under management of the Indústrias Nucleares do Brasil (INB), in the city of Poços de Caldas, Minas Gerais, Brazil.

The region where the project is located is named Campo do Cercado. A decommissioning license was granted by the Canadian Nuclear Safety Commission (CNSC) in The majority of the physical decommissioning then occurred between and This work included mill demolition, decommissioning of the open pits, and covering of the waste rock pile and tailings management area.

Waste materials were disposed of in one of the open pits at the site, together with much larger volumes of waste rock.

Decommissioning of the TMA was initiated by covering the tailings with till 2 in stages to promote consolidation.

The local till material developed from an adjacent borrow area Decommissioning of the B-zone waste rock pile book used for covering the tailings materials. Waste rock dump surveys and databases Terminology Waste dump and stockpile types.

2 Basic design considerations Mark Hawley General Site selection factors Initial site identification Conceptual design Pre-feasibility design Feasibility design Detailed design and construction Operation Closure The plan covers all facilities used in mining and waste management on the site.

The facilities are reclaimed to a high standard which, in most cases, is expected to be accepted by regulators as final decommissioning when the time comes. An example of the work being completed under the plan is the B-zone waste rock pile. A 7-million-ton pile of waste rock is visible about 20 kms in the distance beyond the Superstack.

Jim Moodie/Sudbury Star “This pile, or mountain, if you will, is composed of waste rock that was generated from two open-pit mines in that same area, the original Gertrude Mine and the more recent Gertrude West Mine,” says Quentin Smith, an.

The waste-rock pile had a distinct radiation and energy balance as high surface albedo reduced available energy for evaporation.

The greatest fraction of daytime available energy was partitioned into latent heat, followed by soil heat flux, and sensible heat flux, respectively. However, in some cases a chimney effect has been observed due to convective currents of air occurring particularly in large waste rock piles with huge blocks buried.

Radon releases due to this effect occur increasingly during wintertime on the waste rock pile plateau and in summertime at the waste rock pile bottom (Kümmel, ). Waste characterisation is the study of the environmental impacts of mining waste during mining, processing and above ground storage of ore prior to treatment.

Waste characterisation needs to consider whether the waste will cause: acid & metalliferous drainage (AMD) saline and/or sodic drainage (i.e. neutral mine drainage) leaching and mobilisation of metals and toxic compound.

In general, the more permeable the waste rock material, and the greater the height-to-width ratio of the waste rock pile, the greater is the potential for advective air movement. The Daxin Uranium Mine was a small open pit mine with contaminated facilities that included an open pit of 87, m 2, east waste rock pile of 71, m 2, west waste rock pile of 57, m 2, ore transfer station and industrial fields of 9, m 2, building and structures of 26, m 2, pieces of equipment, m of plastic conduit.

m of steel conduit and m of roads used for. Saskatchewan's potash producing companies are now in the process of developing decommissioning and reclamation (D&R) plans for potash mines which were in operation many years before these plans were required by provincial regulations.

The major problem is to develop a plan for the extensive piles of potash tails now stored on the surface in tails management areas. There are many features of. decommissioning of the facilities. A s a result, a number of types. the heterogeneous nature of the waste rock piles [5].

The most significan t risks associated with the waste r ock pile. decommissioning of installations will likely be in the period Some decommissioning operations have the potential to impact both the environment and fishing activities.

FRS is a key advisor on the implications of individual plans, and has two major areas of interest in the decommissioning context: cuttings piles; and on-surface large.

The acre Northeast Church Rock Mine site operated from approximately toand includes two underground uranium shafts, waste piles, several surface ponds, buried waste and sand fill areas. (EPA Region 9, May 1, ) EPA settles with United Nuclear to investigate contamination at former Church Rock uranium mine and mill site.

prevent waste rock and tailings from contaminating the surrounding environment 3. manage and control disposal of all tailings and waste rock 4.

optimise the use of waste rock to ensure rehabilitation success. Existing facilities. New tailings dams and waste rock dumps will be constructed, to encompass the increased.

Decommissioning and reclamation of Saskatchewan uranium mines involves a number of "extremes" which range from the physical location and climatic conditions at the sites to the politics, perceptions and regulatory issues which surround the mineral itself.

This paper discusses a number of these extremes and explores how each is being dealt with by operating mines, the regulatory agencies and. A detailed study was undertaken to evaluate various cover system and final landform designs for the B-zone waste rock pile at Rabbit Lake Mine in Canada.

Several tasks were completed including physical and hydraulic characterization of the waste and potential cover materials and numerical modelling to examine erosion and slope stability.The waste rock would be placed on the existing B-zone waste-rock pile, and the special waste would be placed in the bottom of the mined-out A-zone and D-zone pits.

Giga-fren The differences between leachate produced from the column test and from the waste rock pile have illustrated that caution should be used in applying the results of short.the annual Big Rock Point Plant (BRP) submittal of Financial Certification pursuant to 10 CFR (f)(1).

Revisions included update of the discussion on the total volume of radioactive waste disposed and editorial revisions on the temporary on-site storage of low-level radioactive waste and the disposal of hazardous wastes.