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Policy Planning and Administration Department; Nuclear Cycle Backend Directorate
JAEA-Technology 2012-028, 71 Pages, 2012/07
JAEA-Technology-2012-028.pdf:9.75MB
In the second medium term (2010-2015) plans of JAEA, effective and reasonable medium and long term plan for decommissioning of nuclear facility and treatment and disposal of low level radioactive waste in JAEA, based on the premise of safety assurance, is to be formulated by the end of March, 2012. This medium and long term plan is the plan targeting the period over next ten years based on the prospect of the long term waste management from waste generation to waste disposal, and is mainly referred to decommissioning, clearance, waste treatment, waste storage and R&D works. JAEA will be carried out practical work for treatment and disposal of the radioactive waste based on this plan, and also the updating of this plan will be made flexibly according to consideration situation of new framework for nuclear energy policy by the Atomic Energy Commission, technology advance and progress situation of laws and regulations.
FBR Plant Engineering Center; Fast Breeder Reactor Research and Development Center, Tsuruga Head Office; Policy Planning and Co-ordination Department, Tsuruga Head Office
JAEA-Evaluation 2011-004, 132 Pages, 2012/01
JAEA-Evaluation-2011-004.pdf:10.12MB
The logical adequacy of the safety measures in Monju, coolability of the reactor core and the ex-vessel storage tank by natural circulation, and coolability of the spent fuel storage pool, considering Tohoku district - off the Pacific Ocean Earthquake were explained by Japan Atomic Energy Agency and reviewed in the above-titled committee. Main conclusions by the chairman of the committee are summarized as follows: (1) Natural circulation cooling is secured in the reactor after station blackout (SBO) as far as flow path exist. Therefore, the reactor core will never melt because of the decay heat removal as far as the natural circulation is reserved after the reactor shutdown; (2) Spent fuels will never melt due to temperature rise in the ex-vessel fuel storage system, since natural circulation cooling can be expected even after SBO; (3) It is possible to take sufficient countermeasures such as water supply against the spent fuel pool because it takes approximately two month before the top of the spent fuel cans which contain spent fuels are exposed by evaporation of the water.
Policy Planning and Administration Department
Denki Hyoron, 95(2), p.68 - 86, 2010/02
no abstracts in English
Policy Planning and Administration Department
Denki Hyoron, 93(2), p.73 - 91, 2008/02
Japan Atomic Energy Agency (JAEA) was established as the result of the integration of Japan Atomic Energy Research Institute (JAERI) and Japan Nuclear Cycle Development Institute (JNC) on Oct. 1, 2005. This paper introduces the current status of research and development in FY2007.
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".