The Strategies of Research and Education on Decommissioning of Nuclear Facilities in the University of Fukui

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1 German-Japanese Symposium on Technological and Educational Resources for the Decommissioning of Nuclear Facilities April 21, 2015 The Strategies of Research and Education on Decommissioning of Nuclear Facilities in the University of Fukui Satoshi Yanagihara Graduate School of Engineering, University of Fukui

2 Decommissioning Projects in Japan Decommissioning project completed Japan Power Demonstration Reactor Decommissioning project in progress Tokai Power Station Fugen NPP Hamaoka NPP Units 1&2 Shutdown NPPs to be decommissioned Tsuruga NPP Unit 1 Mihama NPP Units 1&2 Shimane NPP Unit 1 Genkai NPP Unit 1 University of Fukui and 15 NPPs are located. Decommissioning is ongoing or planned in such plants; Fugen Tsuruga NPP Unit 1 Mihama NPP Units 1&2 Specific nuclear facilities to be decommissioned Fukushima-daiichi Units 1-6 Decommissioning projects other than NPPs Fuel cycle facilities in Ningyo-toge environmental engineering center Research reactors and research facilities in JAEA Fugen Hamaoka NPP unit 1&2 Tokai Power Station JPDR Fukushima daiichi NPP 1

3 University of Fukui Outline Establishment:1949 Location: Fukui-shi, Fukui-ken Total Staff :1636( Professors: 181) Students Faculties:4147 Graduate schools: 925 (As of 2013) Research Institute of Nuclear Engineering Organization Faculties Education and Regional Studies, Medical Sciences and Engineering Graduate Schools Education, Medical Science, Engineering Research Institute of Nuclear Engineering Nuclear Power and Energy Safety Technology 2

4 Research & Education on Nuclear Decommissioning in University of Fukui Systematic Approach to Research and Education Systematization of decommissioning engineering Education of students and working people in young generation Research Activities Education Program Optimization of decommissioning scenarios Study on methodology of optimization and decision making Development of computer tools Study on knowledge management Rad-waste management Optimization of Rad-waste management including reuse and recycling of materials Education of students in graduate school Curriculum on nuclear decommissioning Research activities related to nuclear decommissioning by students Training course for working people Doctoral program for working people Seminar on nuclear decommissioning for working people 3

5 Technology for Nuclear Decommissioning Necessity of rational implementation of decommissioning project by deploying technologies suitable for facility characteristics Project Management Project evaluation Dose management Work management Schedule management Facility Characterization Radioactive inventory estimation - by calculation - by measurement Dismantlement Rational Implement of Decommissioning Project Decontamination Chemical method Mechanical method Waste Treatments & Disposal Cutting Demolition Remote handling Waste minimization Reuse and recycle of waste Waste disposal 4

6 Optimization of Decommissioning Scenarios Characterization of a decommissioning project by estimation of project parameters such as cost, waste arising and worker dose. Developing a computer system for estimating project parameters taking into account the technology and working conditions. Optimization of a decommissioning plan by effective combination of technology using multi-criteria decision analysis method. Components to be dismantled Reactor internals Reactor vessel Biological Shield Tanks Piping Building structure Others Decontamination & Dismantling Plasma torch Laser cutting Water jet etc. Effective Combination of Technologies Remote Control Manipulators Movable robot etc. Radiation Measurement Work Environment etc. Remote monitoring Automated monitoring etc. Underwater work In-air work Local ventilation, etc. Waste Treatment Clearance Decontamination Melting 5

7 Evaluation of Decommissioning Scenarios Construction of Scenario(WBS) Structure of D&D scenario Evaluation of Work activities Work packages Evaluation of work characteristic considering technology work environment Evaluation models waste management segmentation measurement remote control radiation protection Database of technology 6

8 Knowledge Management for Nuclear Decommissioning Effective Utilization and Analyzing of Information Record during construction and operation : important for planning of decommissioning. Analysis of recodes : to distinguish meaningful information Effective communication to stakeholders : information produced in decommissioning projects. Effective Transfer of Experiences for Future Projects Effective transfer of experiences and lessons learned for future decommissioning projects. Education of young generation by transferring experiences. Information Management Usage of information technology such as 3D-CAD Simulation of human actions by computer 7

9 Nuclear Power Plant Life Preservation of record and knowledge Transfer of experiences Designing Construction Licensing Start of operation Life extension Operation Operation Cease of operation Transition Release of site Decommissioning Life time of facility Generation of Rad-wastes Next generation site release new facilities Disposal of storage of rad-waste 8

10 Education : Nuclear Decommissioning Course Major curriculums Study Basis nuclear Overview energy of pant and life cycle environmental including decommissioning problem, phase Strategies and scenarios for removing regulation what Technology is decommissioning, including optimization of technology deployment characteristics Radioactive waste of nuclear management power (treatment plant, and disposal) decommissioning work and necessary technology, Education for Industrial Applicable Base radiation Project management protection, cost Cost evaluation, safety regulation on nuclear decommissioning, Decommissioning of Fukusima Daiiichi Plant project Environmental management, remediation systems Remote engineering, technology radioactive Risk assessment waste management, Scenario analysis remediation of accident facilities,etc. 9

11 Research and Education for Fukusima Daiichi NPP Research and education by cooperation with universities in western part of Japan Feasibility studies under contact with Ministry of education, culture, sports, science and technology in FY2014 Decommissioning Management review of past experiences of D&D projects Long term material stability diagnosis of reinforced concrete structures survey of radio-resistant materials degradation of polymeric material Characterization of fuel debris material and criticality evaluation in the core Education on nuclear decommissioning Lecture of nuclear decommissioning Seminar and technical tour 10

12 Strategies of Research and Education Cooperation with various organization of industries, academia and research institute Education to cope with wide variety of subjects on nuclear decommissioning Utilization of resources accumulated so far in the University of Fukui Cooperation with various organizations Collaboration with regional industries Research & Education on Nuclear Decommissioning Utilization of resources accumulated in the university Construction of international network 11

13 Concluding Remarks Since 15 nuclear power plants will be in decommissioning phase in the near future including Fukushima daiichi NPPs, decommissioning is getting to be one of important subjects in Japan s nuclear industry. The research and education program on nuclear decommissioning are on going in the university of Fukui; strategy planning for effective implementation of decommissioning projects is one of the subject of the research. Knowledge management must be an important subject for effectively planning and its implementation of decommissioning projects. Education of wide variety subjects on decommissioning is important for young generation since nuclear decommissioning will be continued in long period. Thank you for your attention!! 12