Decommissioning Projects at the Chalk River Laboratories Over the Next 5 Years and the Challenges with Delivery
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SAFETY RE-ASSESSMENT of AECL TEST and RESEARCH REACTORS D. J. WINFIELD Chalk River Nuclear Laboratories ATOMIC ENERGY of CANADA
309 IAEA-SM-310/ 94 SAFETY RE-ASSESSMENT OF AECL TEST AND RESEARCH REACTORS D. J. WINFIELD Chalk River Nuclear Laboratories ATOMIC ENERGY OF CANADA LIMITED 310 IAEA-SM-310/94 SAFETY RE-ASSESSMENT OF AECL TEST AND RESEARCH REACTORS ABSTRACT Atomic Energy of Canada Limited currently has four operating engineering test/research reactors of various sizes and ages; a new isotope-production reactor MAPLE-X10, under construction at Chalk River Nuclear Laboratories (CRNL), and a heating demonstration/test reactor, SDR, undergoing high-power commissioning at Whiteshell Nuclear Research Establishment (WNRE). The company is also performing design studies of small reactors for hot water and electricity production. The older reactors are ZED-2, PTR, NRX and NRU; these range in age from 42 years (NRX) to 29 years (ZED-2). Since 1984, limited-scope safety re-assessments have been underway on three of these reactors (ZED-2, NRX and NRU). ZED-2 and PTR are operated by the Reactor Physics Branch, all other reactors are operated by the respective site Reactor Operations Branches. For the older reactors the original safety reports produced were entirely deterministic in nature and based on the design-basis accident concept. The limited scope safety re-assessments for these older reactors, carried out over the past 5 years, have comprised both quantitative probabilistic safety-assessment techniques, such as event tree and fault tree analysis, and/or qualitative techniques, such as failure mode and effect analysis. The technique used for an individual assessment was dependent upon the specific scope required. This paper discusses the types of analyses carried out, specific insights/recommendations resulting from the analysis and indicates the plan for future analysis. -
Heu Repatriation Project
HEU REPATRIATION PROJECT RATIONALE In April 2010, the governments of Canada and the United States (U.S.) committed to work cooperatively to repatriate spent highly- enriched uranium (HEU) fuel currently stored at the Chalk River Laboratories in Ontario to the U.S. as part of the Global Threat Reduction Initiative, a broad international effort to consolidate HEU inventories in fewer locations around the world. This initiative PROJECT BACKGROUND promotes non-proliferation This HEU is the result of two decades of nuclear fuel use at the by removing existing weapons Chalk River Laboratories for Canadian Nuclear Laboratories (CNL) grade material from Canada research reactors, the National Research Experimental (NRX) and and transferring it to the National Research Universal (NRU), and for the production of U.S., which has the capability medical isotopes in the NRU, which has benefitted generations of to reprocess it for peaceful Canadians. Returning this material to the U.S. in its existing solid purposes. In March 2012, and liquid forms ensures that this material is stored safely in a Prime Minister Harper secure highly guarded location, or is reprocessed into other forms announced that Canada and that can be used for peaceful purposes. the U.S. were expanding their efforts to return additional Alternative approaches have been carefully considered and inventories of HEU materials, repatriation provides the safest, most secure, and fastest solution including those in liquid form. for the permanent disposition of these materials, thereby eliminating a liability for future generations of Canadians. For more information on this project contact: Email: [email protected] Canadian Nuclear Laboratories 1-866-886-2325 or visit: www.cnl.ca persons who have a legitimate need to PROJECT GOAL know, such as police or emergency response To repatriate highly-enriched uranium forces. -
Tering Distributions Using MCNP Simulations of Critical Measurements and Simplified Calculation Benchmarks K.S
International Conference on Nuclear Data for Science and Technology 2007 DOI: Assessment of evaluated (n,d) energy-angle elastic scat- tering distributions using MCNP simulations of critical measurements and simplified calculation benchmarks K.S. Kozier Atomic Energy of Canada Limited, Chalk River Laboratories, Chalk River, Ontario, Canada, K0J 1J0 Abstract. Different evaluated (n,d) energy-angle elastic scattering distributions produce k-effective differences in MCNP5 simulations of critical experiments involving heavy water (D2O) of sufficient magnitude to suggest a need for new (n,d) scattering measurements and/or distributions derived from modern theoretical nuclear models, especially at neutron energies below a few MeV. The present work focuses on the small reactivity change of <1 mk that is observed in the MCNP5 D2O coolant-void-reactivity calculation bias for simulations of two pairs of critical experiments performed in the ZED-2 reactor at the Chalk River Laboratories when different nuclear data libraries are used for deuterium. The deuterium data libraries tested include ENDF/B-VII.0, ENDF/B-VI.4, JENDL-3.3 and a new evaluation, labelled Bonn-B, which is based on recent theoretical nuclear-model calculations. Comparison calculations were also performed for a simplified, two-region, spherical model having an inner, 250-cm radius, homogeneous sphere of UO2, without and with deuterium, and an outer 20-cm-thick deuterium reflector. 1 Introduction The present work focuses on the sensitivity of the ZED-2 MCNP5 CVR calculation bias to -
Nuclear in Canada NUCLEAR ENERGY a KEY PART of CANADA’S CLEAN and LOW-CARBON ENERGY MIX Uranium Mining & Milling
Nuclear in Canada NUCLEAR ENERGY A KEY PART OF CANADA’S CLEAN AND LOW-CARBON ENERGY MIX Uranium Mining & Milling . Nuclear electricity in Canada displaces over 50 million tonnes of GHG emissions annually. Electricity from Canadian uranium offsets more than 300 million tonnes of GHG emissions worldwide. Uranium Processing – Re ning, Conversion, and Fuel Fabrication Yellowcake is re ned at Blind River, Ontario, PELLETS to produce uranium trioxide. At Port Hope, Ontario, Nuclear Power Generation and Nuclear Science & uranium trioxide is At plants in southern Technology TUBES converted. URANIUM DIOXIDE Ontario, fuel pellets are UO2 is used to fuel CANDU loaded into tubes and U O UO URANIUM Waste Management & Long-term Management 3 8 3 nuclear reactors. assembled into fuel YUKON TRIOXIDE UO2 Port Radium YELLOWCAKE REFINING URANIUM bundles for FUEL BUNDLE Shutdown or Decommissioned Sites TRIOXIDE UF is exported for 6 CANDU reactors. UO enrichment and use Rayrock NUNAVUT 3 CONVERSION UF Inactive or Decommissioned Uranium Mines and 6 in foreign light water NORTHWEST TERRITORIES Tailings Sites URANIUM HEXAFLUORIDE reactors. 25 cents 400 kg of COAL Beaverlodge, 2.6 barrels of OIL Gunnar, Lorado NEWFOUNDLAND AND LABRADOR McClean Lake = 3 Cluff Lake FUEL PELLET Rabbit Lake of the world’s 350 m of GAS BRITISH COLUMBIA Cigar Lake 20% McArthur River production of uranium is NVERSION Key Lake QUEBEC CO mined and milled in northern FU EL ALBERTA SASKATCHEWAN MANITOBA F Saskatchewan. AB G R University of IN IC ONTARIO P.E.I. IN A Saskatchewan The uranium mining F T E IO 19 CANDU reactors at Saskatchewan industry is the largest R N TRIUMF NEW BRUNSWICK Research Council NOVA SCOTIA private employer of Gentilly-1 & -2 Whiteshell Point Lepreau 4 nuclear power generating stations Rophton NPD Laboratories Indigenous people in CANDU REACTOR Chalk River Laboratories Saskatchewan. -
The AECL Chalk River Laboratories (CRL) Was Established in 1944 In
WM’05 Conference, February 27 – March 3, 2005, Tucson, AZ STORED LIQUID WASTE REMEDIATION PROGRAM, PHASE 1, AT CHALK RIVER LABORATORIES R.P. Denault, P. Heeney, E. Plaice, K. Schruder, Waste Remediation & Enhancement Projects Division D. Wilder, Site Engineering & Project Management Division W. Graham, Components & Systems Division AECL, Chalk River Laboratories, MS #E4 Chalk River, ON, Canada K0J 1J0 [email protected] ABSTRACT Liquid intermediate- and high-level radioactive wastes presently stored in 21 tanks at the Chalk River Laboratories are being retrieved, conditioned and consolidated into a new storage system. The Liquid Waste Transfer and Storage project is responsible for designing, constructing and commissioning the storage system, specifying and procuring retrieval and transfer equipment and developing operating, maintenance and training procedures and materials. The project has characterized the existing wastes and completed an inspection of the present storage tanks and vaults. The conceptual design has progressed to include a criticality safety assessment, a safeguards analysis, selection of retrieval and transfer technologies and conceptual design of the new storage system. The transfer and collection of wastes from these 21 tanks will be a step forward in the goal of achieving a long-term management solution for the wastes. This paper provides an overview of the development of the conceptual design, including the new storage system, the retrieval system and the transfer systems, the laboratory program that supports the blending sequence and waste conditioning and the tank and vault inspection. INTRODUCTION Atomic Energy of Canada Limited (AECL) is a Federal Crown Corporation charged with leading the development of peaceful applications of nuclear technology in Canada. -
Canadian Nuclear Safety Commission
Canadian Nuclear Safety Commission Performance Report For the period ending March 31, 2007 ________________________ ________________________ The Honourable Gary Lunn Linda J. Keen, M.Sc. Minister President and Chief Executive Officer Natural Resources Canada Canadian Nuclear Safety Commission Table of Contents SECTION I: OVERVIEW........................................................................................................... 1 Message from the President and Chief Executive Officer...................................................................3 Management Representation Statement ...............................................................................................4 Summary Information..................................................................................................................... 5 Mission.................................................................................................................................... 5 Governance ............................................................................................................................. 5 Regulatory Framework ........................................................................................................... 5 Funding of CNSC Operations................................................................................................. 6 Additional Funding Resources Received for 2006-07............................................................ 6 Financial Resources ............................................................................................................... -
NPR81: South Korea's Shifting and Controversial Interest in Spent Fuel
JUNGMIN KANG & H.A. FEIVESON Viewpoint South Korea’s Shifting and Controversial Interest in Spent Fuel Reprocessing JUNGMIN KANG & H.A. FEIVESON1 Dr. Jungmin Kang was a Visiting Research Fellow at the Center for Energy and Environmental Studies (CEES), Princeton University in 1999-2000. He is the author of forthcoming articles in Science & Global Security and Journal of Nuclear Science and Technology. Dr. H.A. Feiveson is a Senior Research Scientist at CEES and a Co- director of Princeton’s research Program on Nuclear Policy Alternatives. He is the Editor of Science and Global Security, editor and co-author of The Nuclear Turning Point: A Blueprint for Deep Cuts and De-alerting of Nuclear Weapons (Brookings Institution, 1999), and co-author of Ending the Threat of Nuclear Attack (Stanford University Center for International Security and Arms Control, 1997). rom the beginning of its nuclear power program could reduce dependence on imported uranium. During in the 1970s, the Republic of Korea (South Ko- the 1990s, the South Korean government remained con- Frea) has been intermittently interested in the cerned about energy security but also began to see re- reprocessing of nuclear-power spent fuel. Such repro- processing as a way to address South Korea’s spent fuel cessing would typically separate the spent fuel into three disposal problem. Throughout this entire period, the constituent components: the unfissioned uranium re- United States consistently and effectively opposed all maining in the spent fuel, the plutonium produced dur- reprocessing initiatives on nonproliferation grounds. We ing reactor operation, and the highly radioactive fission review South Korea’s evolving interest in spent fuel re- products and transuranics other than plutonium. -
Supplementary Information Written Submission from Lake Ontario
CMD 19-M24.7A Date: 2019-10-30 File / dossier : 6.02.04 Edocs pdf : 6032342 Supplementary Information Renseignements supplémentaires Written submission from Mémoire de Lake Ontario Waterkeeper Lake Ontario Waterkeeper et and Ottawa Riverkeeper Sentinelle Outaouais Regulatory Oversight Report for Rapport de surveillance réglementaire Canadian Nuclear Laboratories des sites des Laboratoires Nucléaires (CNL) sites: 2018 Canadiens (LNC) : 2018 Commission Meeting Réunion de la Commission November 7, 2019 Le 7 novembre 2019 This page was intentionally Cette page a été intentionnellement left blank laissée en blanc Amendments have been made to these submissions to reflect additional information that has been received by Ottawa Riverkeeper and Lake Ontario Waterkeeper since October 7. In addition to some typographical corrections, the following changes were made to these previously submitted main report: 1) Recommendation #20 no longer requires that CNL confirm whether a DFO permit has been issued for any Chalk River facilities. This recommendation still requests that any assessments accompanying the permit application be provided. Now it also requests a timeline for CNSC staff consideration of the permit; 2) Recommendation #21 no longer requires that CNL confirm whether there are any ECAs for the Chalk River site. This recommendation still requests any assessments that were undertaken to determine whether one was necessary; 3) Discussions of issues concerning DFO permits and ECAs on page 20 have been updated to reflect the fact that Ottawa Riverkeeper is no longer waiting for confirmation of whether there are any DFO permits or ECAs for the Chalk River site. However, formal access to information requests are still ongoing to provide more background information on both DFO and ECA assessments, and CNL has still been asked to provide this information as well; and 4) Discussions of the Port Hope Harbour wall collapse on page 26 have been amended to reflect additional disclosures received since October 7. -
National Neutron Strategy-Draft
DRAFT FOR CONSULTATION A National Strategy for Materials Research with Neutron Beams: Discussion on a “National Neutron Strategy” This consultation draft was updated in February 2021, following the outcomes of the Canadian Neutron Initiative Roundtable: Towards a National Neutron Strategy, organized in partnership with CIFAR on December 15–16, 2020. 1 DRAFT FOR CONSULTATION This Canadian Neutron Initiative (CNI) discussion paper and associated Roundtable Meeting are produced in partnership with CIFAR. We also thank the following sponsors: 2 DRAFT FOR CONSULTATION Contents 1 Executive summary and overview of the national neutron strategy ................................................... 5 2 Consultation on the strategy ................................................................................................................ 9 3 The present: A strong foundation for continued excellence .............................................................. 10 3.1 The Canadian neutron beam user community ........................................................................... 10 3.2 McMaster University ................................................................................................................... 14 3.3 Other neutron beam capabilities and interests .......................................................................... 15 4 Forging foreign partnerships ............................................................................................................... 17 4.1 Global renewal of advanced neutron sources ........................................................................... -
Chalk River Laboratories
Canada’s Nuclear Sacrifice Area Considerations related to the relicensing of the Chalk River Laboratories a brief submitted to the Canadian Nuclear Safety Commission by the Concerned Citizens of Renfrew County prepared by Gordon Edwards Ph.D. September 6, 2011 Considerations related to the relicensing of the Chalk River Laboratories Table of Contents List of Recommendations 3 Introduction 5 The Licence Application 6 Plan of the Present Submission 9 Importance of the NRU Reactor 10 The Reason for the 2007 Shutdown 11 The NRX Accident 12 The Nuclear Safety Culture 14 The Authority and Independence of the CNSC 15 The MAPLE Reactors 17 The NRU Reactor Vessel Leak of 2009 18 A Caveat on the Continued Operation of NRU 20 Mitigating Radioactive Releases at CRL 22 Case 1: The Rod Bay Leak (onsite) Case 2: Tritium Effluents into the Ottawa River (offsite) Reporting Radioactive Emissions from CRL 26 The Hazards of Isotope Production 28 Deterioration of the FISST 30 Eliminating Weapons Grade Uranium 32 Repatriation of Irradiated HEU to the USA 33 Map and Inventory of Radioactive Wastes at CRL 35 The Nuclear Legacy Liabilities Program 36 Appendix: Towards a Healthy Regulatory Culture 39 2 Considerations related to the relicensing of the Chalk River Laboratories List of Recommendations: 1. That the CRL licence application be split into several: one for the NRU reactor (and perhaps the Z-2 reactor as well), one for the isotope production operation (including FISST and HEU), one for the radioactive waste storage tanks and dumps (including the remediation work affecting degraded irradiated fuel elements, underground plumes and radioactive sediments in the Ottawa River), and one for the multitude of buildings, radioisotope laboratories, defunct facilities and other activities at CRL. -
Inventory of Radioactive Waste in Canada 2016 Inventory of Radioactive Waste in Canada 2016 Ix X 1.0 INVENTORY of RADIOACTIVE WASTE in CANADA OVERVIEW
Inventory of RADIOACTIVE WASTE in CANADA 2016 Inventory of RADIOACTIVE WASTE in CANADA 2016 Photograph contributors: Cameco Corp.: page ix OPG: page 34 Orano Canada: page x Cameco Corp.: page 47 BWX Technologies, Inc.: page 2 Cameco Corp.: page 48 OPG: page 14 OPG: page 50 OPG: page 23 Cameco Corp.: page 53 OPG: page 24 Cameco Corp.: page 54 BWX Technologies, Inc.: page 33 Cameco Corp.: page 62 For information regarding reproduction rights, contact Natural Resources Canada at [email protected]. Aussi disponible en français sous le titre : Inventaire des déchets radioactifs au Canada 2016. © Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources, 2018 Cat. No. M134-48/2016E-PDF (Online) ISBN 978-0-660-26339-7 CONTENTS 1.0 INVENTORY OF RADIOACTIVE WASTE IN CANADA OVERVIEW ���������������������������������������������������������������������������������������������� 1 1�1 Radioactive waste definitions and categories �������������������������������������������������������������������������������������������������������������������������������������������������� 3 1�1�1 Processes that generate radioactive waste in canada ����������������������������� 3 1�1�2 Disused radioactive sealed sources ����������������������������������������� 6 1�2 Responsibility for radioactive waste �������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 6 1�2�1 Regulation of radioactive -
Friends of Oiseau Rock
archive.is Saved from http://www.friendsofoiseaurock.ca/ search 1 Aug 2012 13:27:11 UTC webpage capture no other snapshots from this url All snapshots from host www.friendsofoiseaurock.ca نقوش ما قبل التاريخ « Linked from ar.wikipedia.org en.wikipedia.org » Oiseau Bay fr.wikipedia.org » Liste de sites pétroglyphiques en Amérique fr.wikipedia.org » Rocher à l'Oiseau th.wikipedia.org » ศลปะสกดหน Webpage Screenshot share download .zip report error or abuse Introduction • Location • Access • Hiking • Experience Oiseau Rock Oiseau Rock on the Ottawa River in Pontiac County, Quebec Introduction Oiseau Rock, is a sheer rock face about 150 metres in height which rises straight out of the Ottawa River in Ontario. It was a sacred site for First Nations Peoples who have left behind a remarkable legacy of ancient pictographs which may still be seen today. It continues to be part of the sacred landscape for the Algonkins of Pikwakanagan First Nation near Golden Lake, Ontario and of the Kitigan Zibi Anishinabeg First Nation (Maniwaki, Quebec) who call the rock "Migizi Kiishkaabikaan" meaning bird rock. In June 2001, they held ceremonies and drumming at the site, and will continue to visit what Dr. Daniel Arsenault, archaeologist calls this "natural monument." Location Oiseau Rock is a large outcrop of rock on the Ottawa River in Pontiac County, Quebec. It is situated across from the Atomic Energy of Canada Research Laboratory (AECL) at Chalk River, Ontario. This part of the river is very beautiful as the river narrows, the water deepens and the channel is flanked by the Laurentian Mountains.