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Policy Planning and Administration Department
JAEA-Evaluation 2006-001, 118 Pages, 2006/08
JAEA-Evaluation-2006-001.pdf:8.28MB
The International Fusion Materials Irradiation Facility (IFMIF) project is an international joint facility plan for developing, examining, and evaluating various kinds of candidate materials to realize a nuclear fusion reactor, by means of intense neutron irradiation simulating the fusion neutron environment. In the past, Conceptual Design Activities, Conceptual Design Evaluation activities, and Key Element technology verification Phase (KEP) were carried out. KEP activities in Japan have been organized under cooperation between JAERI and Natural Science Research Organization - National Institute for Fusion Science (NIFS) with the universities. Now, the framework of implementation of the Engineering Validation and Engineering Design Activities (EVEDA) planned as the activity in the next stage is under discussion. In EVEDA planned as the next activity an international cooperative organization strengthened much more is assumed. JAERI decided that it was needed to examine the necessity and the validity of the participation in EVEDA accompanied with an evaluation of the technical results of KEP activity and technical validity of the future plan, in advance of the decision for the participation. And JAERI requested to assemble a specialist group of the related fields in and out of the JAERI, and to perform "Peer Review of IFMIF Project and Relevant Programs".
Advanced Nuclear System Research and Development Directorate; Japan Atomic Power Company*
JAEA-Evaluation 2006-002, 191 Pages, 2006/07
JAEA-Evaluation-2006-002.pdf:42.95MB
A joint project team of Japan Atomic Energy Agency and the Japan Atomic Power Company (as the representative of the electric utilities) started the feasibility study on commercialized fast reactor cycle systems (F/S) in July 1999 in cooperation with Central Research Institute of Electric Power Industry and vendors. On the major premise of safety assurance, F/S aims to present an appropriate picture of commercialization of fast reactor (FR) cycle system which has economic competitiveness with light water reactor cycle systems and other electricity base load systems, and to establish FR cycle technologies for the future major energy supply. In the period from Japanese fiscal year (JFY) 1999 to 2000, the phase-I of F/S was carried out to screen out representative FR, reprocessing and fuel fabrication technologies. In the phase-II (JFY 2001-2005), the design study of FR cycle concepts, the development of significant technologies necessary for the feasibility evaluation, and the confirmation of key technical issues were performed to clarify the promising candidate concepts toward the commercialization. In this final phase-II report clarified the most promising concept, the R&D plan until around 2015, and the key issues for the commercialization. Based on the comprehensive evaluation in F/S, the combination of the sodium-cooled FR with MOX fuel core, the advanced-aqueous reprocessing process and the simplified-pelletizing fuel fabrication process was recommended as the mainline choice for the most promising concept. The concept exceeds in technical advancement, and the conformity to the development targets was higher compared with that of the others. Alternative technologies are prepared to decrease the development risk of innovative technologies in the mainline choice.