RD&D-Programme 98 Treatment and Final Disposal Of
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SE9900147 RD&D-Programme 98 Treatment and final disposal of nuclear waste Programme for research, development and demonstration of encapsulation and geological disposal September 1998 Svensk Karnbranslehantering AB Swedish Nuclear Fuel and Waste Management Co Box 5864 SE-102 40 Stockholm Sweden Tel 08-459 84 00 +46 8 459 84 00 Fax 08-661 57 19 +46 8 661 57 19 30-17 RD&D-Programme 98 Treatment and final disposal of nuclear waste Programme for research, development and demonstration of encapsulation and geological disposal September 1998 NEXT PAGE(S) left BLANK Foreword The Nuclear Activities Act requires a programme for the comprehensive research and development and other measures that are required to manage and dispose of nuclear waste in a safe manner and to decommission and dismantle the nuclear power plants. To meet this requirement, SKB is now presenting RD&D-Programme 98. RD&D Research, The programme provides a basis for the safety work and for evaluating and Development and judging different methods for taking care of the nuclear fuel. SKB's plan is to Demonstration implement deep disposal of the fuel in an initial stage, while holding open the option of using other alternatives. In the RD&D-Programme we describe our activities and planning for this line of action. The review of the programme can offer valuable viewpoints from the outside. Regulatory authorities and the Government can clarify how they look upon different parts of the programme and stipulate guidelines for the future. Municipalities and other stakeholders can, after studying the programme, offer their viewpoints to SKB, the regulatory authorities or the Government. A concrete interim goal in our plan for implementing deep disposal is to be able to choose at least two sites for site investigations by 2001. Achieving this goal puts heavy demands on SKB, but also other parties: • SKB must present a body of material of high quality and work in an open and clear fashion. • The regulatory authorities and the Government should make clear their views regarding SKB's main method, i.e. deep disposal in accordance with KBS-3. Based on the analysis of various methods we have now completed, it should be possible to take a clear stand on whether the method chosen by SKB represents the right strategy. • Concerned municipalities and regions must be given the resources to enable them to participate fully in the siting process, participate in discussions and safeguard their interests. In support of coming siting applications for an encapsulation plant and a deep repository, SKB will prepare environmental impact statements (EISs) based on environmental impact assessments (EIAs). EIA consultations have been initiated locally, regionally and nationally. In this context we view the RD&D-Programme and its subsequent review as a part of the EIA work. Stockholm, September 1998 Swedish Nuclear Fuel and Waste Management Company Peter Nygdrds Claes Thegerstrom President Executive Vice President in charge of Siting Reading instructions RD&D-Programme 98 is intended to provide an overview of SKB's Structure of RD&D- activities and plans. The detailed research programme is presented in a Programme 98 separate background report. In parallel with RD&D-Programme 98, SKB is publishing a number of reports that provide a more thorough RD&D- background and a more detailed account, particularly on those issues Programme 98 Background that the Government mentioned in its decision regarding RD&D- Execution Programme 95. Background report The programme is divided into two parts: Background and Execution. Detailed programme for research and The background part begins with a chapter on the basic premises development (Chapter 1). It deals with general principles, laws and the properties of the waste. The facilities that exist today for dealing with the nuclear waste are also described in the introductory chapter. The two following Main references chapters have to do with the choice between different methods for • System disposing of nuclear waste (Chapter 2) and with the KBS-3 method, account R-98-10 which SKB has chosen as its main alternative (Chapter 3). These two • Alternative chapters provide a broader account of both the KBS-3 method and methods R-98-11 • Criteria for different alternative methods than previous RD&D-programmes. The site evaluation R-98-20 background part concludes with a chapter about the long-term safety • North-south/ of the deep repository (Chapter 4). Coast-interior R-98-16 The second part, Execution, begins with an overview of SKB's strategy Other references and the main features of the programme, both for the next few years • County general and farther in the future (Chapter 5). The plans for siting (Chapter 6), siting studies technology (Chapter 7) and safety assessment (Chapter 8) are then • Feasibility study presented in greater detail. This is followed by an overview of our plans reports for supportive research and development, including continued R&D on • Other SKB reports other methods than the KBS-3 method (Chapter 9). The programme • Research results concludes with a chapter on decommissioning of nuclear facilities and investigations (Chapter 10). from other organizations An important part of the ongoing and planned work is consultation on environmental impact assessments (EIAs). A first draft of the contents of future environmental impact statements (EISs) is therefore provided in an appendix. By attaching it to RD&D-Programme 98, SKB wishes to give all reviewing bodies an opportunity to offer their viewpoints at an early stage on what future EISs are to include. Abbreviations BIOMOVS Biosphere Model Validation Study BIOMASS Biosphere Modelling and Assessment BWR Boiling Water Reactor CLAB Central Interim Storage Facility for Spent Nuclear Fuel EIA Environmental Impact Assessment EIS Environmental Impact Statement EQUIP Evidence from Quaternary Infills for Palaeohydrogeology FEBEX Full-scale Engineering Barriers Experiment in Crystalline Host Rock GPS Global Positioning System HRL Hard Rock Laboratory ILW Intermediate-level waste LILW Low and intermediate-level waste LLW Low-level waste HLW High-level waste HRL Hard Rock Laboratory IAEA International Atomic Energy Agency KASAM Statens rad for karnavfallsfragor (Swedish National Council for Nuclear Waste) KBS Karnbranslesakerhet = Nuclear Fuel Safety KTH Kungliga Tekniska Hogskolan (Royal Institute of Technology) MLH Medium Long Holes MSEK Millions of Swedish kronor NEA Nuclear Energy Agency NPP Nuclear Power Plant OECD Organization for Economic Cooperation and Development PAGEPA PAlaeohydrogeology and GEoforecasting for Performance Assessment PWR Pressurized Water Reactor P&T Partitioning and Transmutation RD&D Research, Development and Demonstration REX Redox Experiment on detailed scale RPV Reactor Pressure Vessel RVS Rock Visualization System SAFE Safety Assessment of Final Repository for Radioactive Operational Waste SEK Swedish kronor SFR Final Repository for Radioactive Operational Waste SGU Geological Survey of Sweden SKB Svensk Karnbranslehantering AB (Swedish Nuclear Fuel and Waste Management Co) SKI Statens karnkraftinspektion (Swedish Nuclear Power Inspectorate) SKN Statens karnbranslenamnd (National Board for Spent Nuclear Fuel) SSI Statens stralskyddsinstitut (National Radiation Protection Institute) SFR Final repository for radioactive operational waste TRUE Tracer Retention Understanding Experiments TBM Tunnel Boring Machine TDS Total Dissolved Solids VDH Very Deep Holes VLH Very Long Holes VSP Vertical Seismic Profiling ZED EX Zone of Excavation Disturbance Experiment Contents Page Summary 11 Part I - Background 1 Premises 27 1.1 Waste 27 1.2 What does the law say? 28 1.2.1 Division of responsibility 28 1.2.2 Financing 29 1.2.3 Rules for licensing 30 1.2.4 Regulations concerning safety and radiation protection 31 1.3 Previous decisions 31 1.4 Existing facilities 32 1.4.1 Final Repository for Radioactive Operational Waste, SFR 32 1.4.2 Central Interim Storage Facility for Spent Nuclear Fuel, CLAB 32 1.4.3 Transportation system 32 1.5 Knowledge base 34 1.6 What remains to be done? 34 2 Method selection 35 2.1 Three principles for management of hazardous waste 35 2.2 Different modules in waste management 36 2.2.1 Supervised storage - interim storage 37 2.2.2 Geological disposal 38 2.2.3 Ultimate removal 40 2.2.4 Reprocessing and recycling 40 2.2.5 Transmutation 41 2.3 Selecting a main alternative 42 2.3.1 Two main questions 42 2.3.2 Aspects of the problem 43 2.3.3 Four possible strategies 43 2.4 The Swedish main alternative 45 2.5 Historical background 46 2.5.1 Overview 46 2.5.2 Chronological summary of important inquiries 47 3 Deep disposal method 53 3.1 Planned deep disposal system 53 3.1.1 Waste 53 3.1.2 CLAB 54 3.1.3 Encapsulation plant 54 3.1.4 Deep repository 54 3.2 System analysis 55 3.2.1 Safety 56 3.2.2 Freedom of choice 57 3.2.3 Long-term storage in CLAB - the zero alternative 58 3.2.4 Safeguards and physical protection 58 4 Safety 59 4.1 Safety principles for a deep repository 59 4.2 Isolation - the primary function of the repository 60 4.3 Retardation - the secondary function of the repository 60 4.4 Safety assessments 62 Contents 7 Part II - Execution 5 Programme overview 65 5.1 What does SKB want? 65 5.1.1 Method 65 5.1.2 Timetable 65 5.1.3 Siting 66 5.1.4 Democratic consensus and community support 66 5.1.5 Research, development and demonstration 66 5.2 Goals of the work of the next few years 67 5.3 How will SKB achieve its goals? 68 5.3.1 Siting and establishment 68 5.3.2 Technology