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Department of Decommissioning and Waste Management
JAEA-Review 2024-004, 124 Pages, 2024/07
JAEA-Review-2024-004.pdf:3.39MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2022 to March 31, 2023. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM. In FY2022 radioactive wastes generated from R&D activities in NSRI were treated safely. They were about 262 m
of combustible solid wastes and 113 m
of noncombustible solid wastes and 203 m of liquid wastes. After adequate treatment, 527 waste packages (in 200 L-drum equivalent) were generated. The total amounts of accumulated waste packages were 122,925 as of the end of FY2022 due to efforts of the restitution of waste packages to the Japan Radioisotope Association and volume reduction treatments of the stored waste packages. Decommissioning activities were carried out for the JAEA's Reprocessing Test Facility (JRTF). As for the R&D activities, studies on radiochemical analyses of wastes for disposal were continued. In order to pass the conformity review on the New Regulatory Requirements for waste management facilities, the Approval of the design and construction method was applied sequentially for the Nuclear Regulation Authority. The ministry of the Environment and Tokai-mura office requested JAEA to dispose of the contaminated soil generated by the accident of the Fukushima Daiichi Nuclear Power Station. The monitoring work at the playground was conducted during this period.
Department of Decommissioning and Waste Management
JAEA-Review 2023-001, 136 Pages, 2023/06
JAEA-Review-2023-001.pdf:10.65MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2021 to March 31, 2022. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM. In FY2021 radioactive wastes generated from R&D activities in NSRI were treated safely. They were about 206 m of combustible solid wastes and 155 m of noncombustible solid wastes and 113 m of liquid wastes. After adequate treatment, 760 waste packages (in 200 L-drum equivalent) were generated. The total amounts of accumulated waste packages were 126,827 as of the end of FY2021 due to efforts of the restitution of waste packages to the Japan Radioisotope Association and volume reduction treatments of the stored waste packages. Decommissioning activities were carried out for the JAEA's Reprocessing Test Facility (JRTF), the Liquid Waste Treatment Facilities, the Compaction Facilities, and Fusion Neutronics Source (FNS) facilities. As for the R&D activities, studies on radiochemical analyses of wastes for disposal were continued. In order to pass the conformity review on the New Regulatory Requirements for waste management facilities, the Approval of the design and construction method was applied sequentially for the Nuclear Regulation Authority. The ministry of the Environment and Tokai-mura office requested JAEA to dispose of the contaminated soil generated by the accident of the Fukushima Daiichi Nuclear Power Station. The monitoring work at the playground was conducted during this period.
Department of Decommissioning and Waste Management
JAEA-Review 2022-001, 112 Pages, 2022/06
JAEA-Review-2022-001.pdf:6.51MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2020 to March 31, 2021. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM. In FY2020 radioactive wastes generated from R&D activities in NSRI were treated safely. They were about 267 m of combustible solid wastes and 233 m of noncombustible solid wastes and 78 m of liquid wastes. After adequate treatment, 1,448 waste packages (in 200 L-drum equivalent) were generated. The total amounts of accumulated waste packages were 130,604 as of the end of FY2020 due to efforts of the restitution of waste packages to the Japan Radioisotope Association and volume reduction treatments of the stored waste packages. Decommissioning activities were carried out for the JAEA's Reprocessing Test Facility (JRTF), the Liquid Waste Treatment Facilities, the Compaction Facilities, and Fusion Neutronics Source (FNS) facilities. As for the R&D activities, studies on radiochemical analyses of wastes for disposal were continued. In order to pass the conformity review on the New Regulatory Requirements for waste management facilities, the Approval of the design and construction method was applied sequentially for the Nuclear Regulation Authority. The ministry of the Environment and Tokai-mura office requested JAEA to dispose of the contaminated soil generated by the accident of the Fukushima Daiichi Nuclear Power Station. The monitoring work at the playground was conducted during this period.
Department of Decommissioning and Waste Management
JAEA-Review 2021-002, 105 Pages, 2021/05
JAEA-Review-2021-002.pdf:9.68MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2019 to March 31, 2020. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM. In FY2019 radioactive wastes generated from R&D activities in NSRI were treated safely. They were about 323 m of noncombustible solid wastes and 111 m of liquid wastes. After adequate treatment, 2,588 waste packages (in 200 L-drum equivalent) were generated. The total amounts of accumulated waste packages were 130,223 as of the end of FY2019 due to efforts of the restitution of waste packages to the Japan Radioisotope Association and volume reduction treatments of the stored waste packages. Decommissioning activities were carried out for the JAEA's Reprocessing Test Facility (JRTF), the Liquid Waste Treatment Facilities, the Decontamination Facilities, and Fusion Neutronics Source (FNS) facilities. As for the R&D activities, studies on radiochemical analyses of wastes for disposal were continued. In order to pass the conformity review on the New Regulatory Requirements for waste management facilities, the Approval of the design and construction method was applied sequentially for the Nuclear Regulation Authority. The ministry of the Environment and Tokai-mura office requested JAEA to dispose of the contaminated soil generated by the accident of the Fukushima Daiichi Nuclear Power Plant. The monitoring work at the playground was conducted during this period.
Department of Decommissioning and Waste Management
JAEA-Review 2020-012, 103 Pages, 2020/08
JAEA-Review-2020-012.pdf:8.17MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2018 to March 31, 2019. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2019-011, 91 Pages, 2019/10
JAEA-Review-2019-011.pdf:5.25MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2017 to March 31, 2018. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2018-008, 87 Pages, 2018/07
JAEA-Review-2018-008.pdf:2.67MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2016 to March 31, 2017. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2016-029, 90 Pages, 2017/02
JAEA-Review-2016-029.pdf:8.54MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2015 to March 31, 2016. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Construction Department; Tono Geoscience Center, Sector of Decommissioning and Radioactive Waste Management; Horonobe Underground Research Center, Sector of Decommissioning and Radioactive Waste Management
JAEA-Technology 2015-034, 411 Pages, 2016/03
JAEA-Technology-2015-034.pdf:103.07MB
This report presents the results of shaft and gallery excavation performed focusing on crystalline rock (Mizunami) and sedimentary rock (Horonobe) from the point of view of construction technologies applied and the information obtained at respective construction stages, which is required for construction designing Facility construction in general, its goal is to build the facilities and the general and accrual designs are made based on the specific construction plan, while the construction of shafts and research galleries is being conducted based on the research plan. This construction is performed in the deep underground where significant uncertainties exit, for instance, it is difficult to obtain the precision information from preliminary investigation, construction work is inextricability liked to the stepwise research, and this very long-term construction period is likely to be receiving restrictions concerning environmental and social interests. Therefore, there are a number of conditions can not to be predicted at the initial design stage. Timely and appropriate actions will be taken to deal with these particular conditions, such as changing on design due to the revision of the research and construction plan while conducting excavation construction. In the series of construction activities: from input (i.e. construction conditions) to completion of the construction under the particular conditions, we summarize the experiences obtained at respective construction stages as the important information to transfer the technology to the similar construction in the future. This report describes the general consideration and summary of chapters at the beginning, and introduces the construction activities performed at each rock series.
Department of Decommissioning and Waste Management
JAEA-Review 2015-036, 87 Pages, 2016/03
JAEA-Review-2015-036.pdf:4.02MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2014 to March 31, 2015. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2015-004, 90 Pages, 2015/03
JAEA-Review-2015-004.pdf:17.29MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2013 to March 31, 2014. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2013-061, 98 Pages, 2014/03
JAEA-Review-2013-061.pdf:29.91MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2012 to March 31, 2013. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM. Repair works for the damages of the facilities caused by the Great East Japan Earthquake were carried out. Supporting activities against the severe contamination of lands caused by the Fukushima Daiichi accident were also performed.
Department of Decommissioning and Waste Management
JAEA-Review 2013-031, 114 Pages, 2013/12
JAEA-Review-2013-031.pdf:49.57MB
This reports described the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2011 to March 31, 2012. The report covers organization and missions of DDWM, outline and operation/maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted in DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2013-029, 105 Pages, 2013/11
JAEA-Review-2013-029.pdf:10.51MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2010 to March 31, 2011. The report covers organization and missions of DDWM, operation and maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted by DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2013-010, 107 Pages, 2013/06
JAEA-Review-2013-010.pdf:4.43MB
This report describes the activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) in the period from April 1, 2009 to March 31, 2010. The report covers organization and missions of DDWM, operation and maintenance of facilities which belong to DDWM, treatment and management of radioactive wastes, decommissioning activities, and related research and development activities which were conducted by DDWM.
Department of Decommissioning and Waste Management
JAEA-Review 2010-020, 93 Pages, 2010/06
JAEA-Review-2010-020.pdf:3.78MB
This reports described the activities of Department of Decommissioning and Waste Management in Nuclear Science Research Institute in the period from April 1, 2008 to March 31, 2009. In this period, 519 m of solid wastes and 314 m of liquid wastes were treated. Then 2,391 waste packages were generated and total accumulated waste packages amounted to 136,971. Development of record keeping system for land burial and design of new management system for mid-level waste packages were conducted. Decommissioning plan for the JAEA's Reprocessing Test Facility (JRFT), the Ceramic Fuel Laboratory, the Plutonium Laboratory No.2, the Metallurgical Laboratory, Isotope Separation Laboratory and Reprocessing Test Laboratory were carried out. Studies were conducted on radiochemical analyses of wastes, JRFT decommissioning technologies and waste volume reduction. The method of nuclide measuring for the clearance was approved. And removing of liquid waste pipeline was started.
Department of Decommissioning and Waste Management
JAEA-Review 2009-007, 99 Pages, 2009/06
JAEA-Review-2009-007.pdf:12.4MB
This reports described the activities of Department of Decommissioning and Waste Management (DDWM) in the period from April 1, 2007 to March 31, 2008. In FY2007 radioactive wastes generated from R&D activities were about 371 m of combustible solid wastes, 152 m of noncombustible solid wastes and 510 m of liquid wastes. After adequate treatment 2,111 waste packages were generated. Two new approaches were conducted for radioactive waste management: development of record keeping system for land burial and a new management system for mid-level radioactive waste packages. Decommissioning activities were carried out as planned for the JAEA's Reprocessing Test Facility, the Ceramic Fuel Laboratory, the Plutonium Laboratory No.2 and the Metallurgical Laboratory. As for the R&D activities, studies were conducted on radiochemical analyses of wastes for land burial, and decommissioning. As for the clearance was applied for approval of nuclide measureing.
Department of Decommissioning and Waste Management
JAEA-Review 2007-056, 179 Pages, 2008/03
JAEA-Review-2007-056.pdf:26.77MB
This reports described activities of Department of Decommissioning and Waste Management (DDWM) in Nuclear Science Research Institute (NSRI) from October 1, 2006 to March 31, 2007. The report covers outline of facilities, treatment and management of radioactive wastes, decommissioning activities, and related R&D activities. In FY2006 radioactive wastes generated mainly from R&D activities in NSRI were treated safely. They were 393m of combustible solid wastes, 152m of noncombustible solid wastes and 493m of liquid wastes. 1,596 waste packages (in 200L-drum equivalent) were generated and totally 134,466 drums were stored as of the end of FY2006. Decommissioning activities were carried out for the JAEA's Reprocessing Test Facility and the Ceramic Fuel Laboratory. As for the R&D activities, studies were conducted on radiochemical waste analyses, clearance, decommissioning technologies and waste management.
JAERI's Internal Investigation Group on the Ruptured Glove; Department of Decommissioning and Waste Management
JAERI-Review 2002-017, 121 Pages, 2002/09
JAERI-Review-2002-017.pdf:13.36MB
On November 21st, 2001, the glove rupture arose at an incinerator of Waste Treatment Building No.1 in JAERI Tokai Research Establishment. In order to examine the cause and recurrence prevention measure of the rupture, JAERI's Internal Investigation Group on the Ruptured Glove investigated the conditions of the incinerator including ash removing equipment and the glove, types and properties of waste which was incinerated on that day, and background factor of the trouble in cooperation with Department of Decommissioning and Waste Management.As the result, the causes of the rupture were that the solidification of liquid scintillator waste was insufficient, that the protective cover of the glove does not have pressure resistance and the degraded glove was used. For preventing the recurrence of the trouble, the direct confirmation of the solidification condition, the installation of protective cover for the glove, the improvement of the management of the glove, review of manuals and education and training were carried out.
Department of Decommissioning and Waste Management
JAERI-Review 2000-013, 49 Pages, 2000/09
JAERI-Review-2000-013.pdf:3.26MB
no abstracts in English