Results 1 - 10 of 149
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[en] This paper will illustrate how the Radiation Protection Division (RPD) of the U.S. Environmental Protection Agency (EPA) is drawing upon the Agency's strong legacy in stakeholder outreach and employing new 'social media' tools to enhance its efforts to involve the public in decision-making for environmental rules applicable to uranium milling. (author)
[en] Quality assurance is integrated throughout the development lifecycle for performance and safety assessment software. The software used in the performance and safety assessment of a Canadian deep geological repository (DGR) follows the CSA quality assurance standard CSA-N286.7 , Quality Assurance of Analytical, Scientific and Design Computer Programs for Nuclear Power Plants. Quality assurance activities in this standard include tasks such as verification and inspection; however, much more is involved in producing a quality software computer program. The types of errors found with different verification methods are described. The integrated quality process ensures that defects are found and corrected as early as possible. (author)
[en] The National Aeronautics and Space Administration (NASA) is nearing the successful completion of its $230 Million (US), 12 year effort to decommission the Plum Brook Reactor Facility (PBRF). This paper will examine the challenges and solutions involved in the segmentation and removal of the reactor and its internals, and the decontamination of the hot cells. (author)
[en] This paper discusses the Advanced Decommissioning Work Packages for Building 107 Dismantling and the Building 204 Bay Water Removal and Fire Separation Project at the Chalk River Laboratories. This Paper provides a facility description, history and background. It provides a project overview; including timeline of major milestones. This paper provides a summary for the radiation dose assessment on the building 204 project and provides a high level overview of the financial costs and waste management summary. This paper also highlights some of the key lessons learned on each project.
[en] The National Aeronautics and Space Administration (NASA) is nearing the successful completion of its US $230 Million, 12 year effort to decommission the Plum Brook Reactor Facility (PBRF). This paper will consider several different key elements of the project, including cleaning and survey of embedded and buried piping, soil assaying, and community outreach. (author)
[en] Research reactors have been operated in Canada to support nuclear R&D programs and medical isotope production. Used nuclear fuel discharged from these research reactors is currently being dry stored at the storage facilities at Chalk River site. The research reactor used fuels are significantly less corrosion-resistant than the Zircaloy-clad power-reactor fuels during storage and are subject to unique hazards associated with their chemical and physical characteristics.This paper discusses the technical and safety issues related to the dry storage of these fuels, and presents the key safety considerations required in the design and operation of new dry fuel storage facilities at CRL. (author)
[en] This paper explores the importance of records and information management for decommissioning projects. Key decommissioning information and elements of a sound information management strategy are identified. Various knowledge management strategies and tools are discussed as opportunities for leveraging decommissioning information. The paper also examines the implementation of Atomic Energy of Canada Limited's (AECL) strategy for the long term preservation of decommissioning information, and its initiatives in leveraging of information with the application of several knowledge management strategies and tools. The implementation of AECL's strategy illustrates common as well as unique information and knowledge management challenges and opportunities for decommissioning projects. (author)
[en] The Canadian Nuclear Safety Commission (CNSC) regulates virtually all aspects of the nuclear industry in Canada, and Dr. Binder, President and Chief Executive Officer, will be opening his talk with a brief overview of the work done by the CNSC and its regulatory framework. Specifically, Dr. Binder will explore the CNSC's role with regard to waste management and will discuss site decommissioning both at present and in the near future. Touching on the impacts of the events in Japan, Dr. Binder will walk through the regulations governing waste, highlighting upcoming regulatory activities, exploring the CNSC's current approach to regulating decommissioning, and discussing potential future improvements. The presentation will conclude with a snapshot of questions facing the industry with regard to waste management and how industry could best tackle these challenges.
[en] The traditional, safety-driven image of nuclear decommissioning tends to view decommissioning as a process ending by unrestricted release of remaining facilities and site. And yet, although this image may be right insofar as nuclear safety and radiation protection are concerned, a lot of work still remains after the above-mentioned (radiological) end state is reached. This paper intends to draw attention to post-decommissioning aspects, which are inevitably linked to the nuclear decommissioning strategy, and are essential for successful completion of the whole project. Moreover, the paper shows that thorough planning for decommissioning should not be limited to its nuclear or radiological component. This paper will focus primarily on three aspects: conventional demolition, landscaping, and demobilization; environmental remediation of the site; and, reuse and redevelopment. (author)
[en] Nuclear research and development carried out on behalf of the Government of Canada have resulted in 60 years of nuclear legacy liabilities at the Chalk River Laboratories. The liabilities consist of shutdown reactors, research facilities and supporting infrastructure. The Government of Canada in 2006 initiated a five-year, $520 million start-up phase and in April 2011 entered the next 5-year program of decommissioning as part of the long term strategy to address the legacy liabilities. A number of planned projects in Facilities Decommissioning, at the Chalk River Laboratories, have been defined for the next 3 years and will be described in this paper in combination with operational lessons learned for future decommissioning project work. (author)