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JAEA Reports

Analytical data on contaminated water, rubble and other collected at the Fukushima Daiichi Nuclear Power Station

Asami, Makoto*; Takahatake, Yoko; Myodo, Masato; Tobita, Takeshi; Kobayashi, Kiwami; Hayakawa, Misa; Usui, Yuka; Watahiki, Hiromi; Shibata, Atsuhiro; Nomura, Kazunori; et al.

JAEA-Data/Code 2017-001, 78 Pages, 2017/03

JAEA-Data-Code-2017-001.pdf:4.92MB
JAEA-Data-Code-2017-001-appendix(DVD-ROM).zip:818.06MB

At Fukushima Daiichi Nuclear Power Station owned by Tokyo Electric Power Company Holdings, Incorporated (TEPCO), contaminated water (accumulated, treated) secondary waste from water treatment, rubble and soil were collected and analyzed. The data already opened to public was collected as this report. The analytical data reported by TEPCO, Japan Atomic Energy Agency and International Research Institute for Nuclear Decommissioning until the end of March, 2016, was collected. Information on the samples and values of radioactive nuclide concentration and others were tabulated, besides figures, which show change in radioactive nuclide concentration for major nuclides, are contained. And, English translation and the collected data are provided as electric data.

Journal Articles

The Recent improvements on circulation of research results at the Japan Atomic Energy Agency (JAEA)

Inagaki, Satomi; Hayakawa, Misa; Ebisawa, Naomi; Gonda, Mayuki; Nozawa, Takashi; Itabashi, Keizo

Proceedings of 18th International Conference on Grey Literature (GL-18), p.24 - 31, 2017/02

Sharing information of scientific research results on the Internet have developed in the global advancement of the open science today, such as archiving and disseminating scientific papers on institutional repositories, facilitating access to and use of research data etc. Accessibility to those contents in large volumes of information on the Internet is very important issue. Those contents might be grey literature without solving this accessibility issue. This presentation introduces the case study of the Japan Atomic Energy Agency (JAEA) Library as an example of efforts to improve circulation of research results in terms of grey literature. JAEA has disseminate information of our research results through the JAEA Originated Papers Searching System (JOPSS) on the Internet over decade, but we have three main issues to solve aiming at improving the accessibility of grey literature in the open science era; (1) to ensure accessibility of our Internet contents, (2) to consider how our target users find our contents, (3) to improve user interface of contents. We will continue to improve the system aiming to distribute various information of JAEA R&D results.

Journal Articles

The Recent improvements on circulation of research results at the Japan Atomic Energy Agency

Inagaki, Satomi; Hayakawa, Misa; Ebisawa, Naomi; Gonda, Mayuki; Nozawa, Takashi; Itabashi, Keizo

The Grey Journal; An International Journal on Grey Literature, 13(2), p.123 - 129, 2017/00

Sharing information of scientific research results on the Internet have developed in the global advancement of the open science today, such as archiving and disseminating scientific papers on institutional repositories, facilitating access to and use of research data etc. Accessibility to those contents in large volumes of information on the Internet is very important issue. Those contents might be grey literature without solving this accessibility issue. This presentation introduces the case study of the Japan Atomic Energy Agency (JAEA) Library as an example of efforts to improve circulation of research results in terms of grey literature. JAEA has disseminate information of our research results through the JAEA Originated Papers Searching System (JOPSS) on the Internet over decade, but we have three main issues to solve aiming at improving the accessibility of grey literature in the open science era; (1) to ensure accessibility of our Internet contents, (2) to consider how our target users find our contents, (3) to improve user interface of contents. We continue to disseminate research results by paying attention to the global trend of open science.

Journal Articles

Activities for preserving information resources of Fukushima Daiichi Nuclear Power Station accident; Constructing, operating the archive and its future prospect

Hayakawa, Misa; Kumazaki, Yui; Nakajima, Hidemitsu; Yonezawa, Minoru

Nihon Genshiryoku Gakkai-Shi ATOMO$$Sigma$$, 58(8), p.509 - 513, 2016/08

AA2016-0050.pdf:0.82MB

no abstracts in English

Journal Articles

Archiving of relating information of the Fukushima Daiichi Nuclear Power Station Accident and its future prospect

Hayakawa, Misa; Yonezawa, Minoru; Mineo, Yukinobu; Kunii, Katsuhiko; Nagaya, Shun

Dai-12-Kai Joho Purofesshonaru Shimpojiumu (INFOPRO 2015) Happyo Yokoshu, p.129 - 134, 2015/12

no abstracts in English

Journal Articles

Improving the metadata of bibliographic information to enhance its access

Hayakawa, Misa

Senmon Toshokan, (274), p.2 - 5, 2015/11

no abstracts in English

Journal Articles

Improving the metadata of bibliographic information to enhance its access

Hayakawa, Misa; Nagaya, Shun; Ebisawa, Naomi; Inagaki, Satomi; Nozawa, Takashi; Itabashi, Keizo

Proceedings of 4th International Conference of Asian Special Libraries (ICoASL 2015) (USB Flash Drive), 8 Pages, 2015/04

Recently, a large quantity of digital contents is distributed on the Internet. Therefore, it is important for us to consider how we can add the value and increase the access to our library bibliographic information metadata. Availability from multiple channels and providing link to the full text may become a solution. This paper describes the case of Japan Atomic Energy Agency Library, as an example to improve our library database that is providing the R&D information (academic papers, oral presentation, and technical reports) of our institute. JAEA library provides this information through JAEA Originated Papers Searching System (JOPSS). This system was improved by providing access channels for the metadata and link to full text. In addition, user interface was constructed based on the information seeking behavior.

Journal Articles

Enhancement of the functions of the Japan Atomic Energy Agency Library's Fukushima Nuclear Accident Archive using a novel data flagging system that improves the utilization of numerical data on the internet

Ikeda, Kiyoshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Kunii, Katsuhiko; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

Proceedings of 16th International Conference on Grey Literature (GL-16), p.139 - 145, 2015/03

The Japan Atomic Energy Agency (JAEA) Library has collected Internet information related the Fukushima Accident. We previously reported the development of the Fukushima Accident Archive using the DSpace in 15th International Conference on Grey Literature. We have encountered a new challenging issue grey literature. In many cases, Internet information contains valuable numerical data. However, it is difficult to identify the existence of numerical data in the Internet sites because numerical data is not often organized in a systematic manner on the web sites. We considered such method as to identify numerical data and attempted to introduce "data flagging" system, which was previously used in the International Atomic Energy Agency's International Nuclear Information System (INIS). In this presentation, we will introduce our "data flagging" system for numerical data on the Internet and how we apply the system to our Fukushima Accident Archive.

Journal Articles

Contribution to the improvement of dissemination of grey literature; JAEA Library's efforts for collecting, organizing and disseminating information on nuclear accidents

Ikeda, Kiyoshi; Oshima, Takeshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

Proceedings of 15th International Conference on Grey Literature (GL-15), p.41 - 47, 2014/03

The Japan Atomic Energy Agency (JAEA) Library has collected information on the 3.11 accident from various sources and websites and then disseminated it over the Internet. However, there are some unresolved issues in terms of permanent accessibility to information and the lack of bibliographical control. We contribute to the improvement of the dissemination of grey literature by creating the metadata and organizing it with classification. We have created more than 4,000 metadata of the website's information concerning TEPCO's "photo and video collection", and more than 3,000 metadata of the Ministry of Economy, Trade and Industry (METI) of Japan's "press release". We have also created metadata of presentations at the meetings of the Atomic Energy Society of Japan (AESJ), held in September 2012 and March 2013.

Journal Articles

Contribution to the improvement of dissemination of grey literature; JAEA Library's efforts for collecting, organizing and disseminating information on nuclear accidents

Ikeda, Kiyoshi; Oshima, Takeshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

The Grey Journal; An International Journal on Grey Literature, 10(1), p.7 - 13, 2014/00

In March 2011, the Fukushima Daiichi Nuclear Power Station Accident occurred in Japan. After the accident, parts of information on the accident has been distributed as grey literature and they cause some issues in terms of permanent accessibility to the information. This paper introduces the activity of the Japan Atomic Energy Agency Library as an example of efforts to improve access of Internet information using the DSpace. Consequently, we contributed to the improvement of the dissemination of grey literature at the following three points; (1)to ensure permanent access to Internet information by cooperating with the National Diet Library's Web archiving project, (2) to develop standardized metadata schema and classification system, (3)to develop prototype system using DSpace and compile about 36,000 metadata.

Journal Articles

My Bookshelf; Change of Kanji, Koji-Seigo and information distribution

Hayakawa, Misa

Joho Kanri, 55(12), p.935 - 938, 2013/03

no abstracts in English

Journal Articles

Collection of conference proceedings and improvement of access to the full text of proceedings

Hayakawa, Misa; Nagaya, Shun; Gonda, Mayuki; Fukazawa, Takeyasu; Yonezawa, Minoru; Itabashi, Keizo

The Grey Journal; An International Journal on Grey Literature, 9(3), p.139 - 144, 2013/00

Conference Proceedings are "grey literature" due to the fact that they are not made commercially available frequently. While many Proceedings are published on the Internet, there are specific issues that can affect access, such as changes in the URLs. This paper introduces the case of the Japan Atomic Energy Agency (JAEA) library as an example of efforts to improve access of Proceedings using the Internet.

Journal Articles

Collection of conference proceedings and improving access to the full text of proceedings

Hayakawa, Misa; Nagaya, Shun; Gonda, Mayuki; Fukazawa, Takeyasu; Yonezawa, Minoru; Itabashi, Keizo

Proceedings of 14th International Conference on Grey Literature (GL-14), p.143 - 148, 2012/11

In this presentation, we would like to introduce the present status of the collection of conference proceedings (proceedings) in the JAEA Library and the improvement of access to the full text of proceedings. Conference Proceedings have been published mainly in conventional book form from. But, in recent years, their publication form has been changing. Nowadays, they have been publishing in the form of a CD-ROM, or Internet. They become typical gray literature, because many of them are not commercially available. Accessibility to the full text of conference proceedings on the Internet seems improved. But, conference proceedings on the Internet have a specific problem of information on the Internet. For example, there is a possibility that access URL is changed. As a good practice for the improvement of accessibility to the full text of proceedings, we would like to introduce the case of the JAEA library. So, we would like to examine the problems of the availability of proceedings as a whole.

Journal Articles

Classifing terms used in Taoist charms appearing in "Dao-fa Hui-yuan"

Hayakawa, Misa; Matsumoto, Koichi*; Uda, Norihiko*

Toshokan Joho Media Kenkyu, 8(1), p.57 - 69, 2010/09

The database of the image and related text of Taoist charms (Fu), which appear in the Taoist ritual book "Dao-fa Hui-yuan", has been built to help researchers in this college. And many analysis tool has been built up, for example, analysis system of "Parts", which is component of "Fu". However, if researchers want to use these tools, they are not useful unless the relation of the forms and the meanings of "Parts", which is given to each "Parts" in analysis style are definitly. The former database didn't contain all "Fu" and "Parts" of "Dao-fa Hui-yuan". Therefore, analysis tools couldn't use for research of "Dao-fa hui-yuan". In this study, we created "Fu" and "Parts" data which appear in "Dao-fa Hui-yuan" after volume 56, and created a classified list of "Parts". We analyzed about the tendency of distributions of "Parts", taking the relations of "Parts" and their meanings into consideration, and considered the relations of the tendency of distributions to Taoist sects.

JAEA Reports

Performance-based improvement of the leakage rate test program for the reactor containment of HTTR; Adoption of revised test program containing "Type A, Type B and Type C tests"

Kondo, Masaaki; Kimishima, Satoru*; Emori, Koichi; Sekita, Kenji; Furusawa, Takayuki; Hayakawa, Masato; Kozawa, Takayuki; Aono, Tetsuya; Kuroha, Misao; Ouchi, Hiroshi

JAEA-Technology 2008-062, 46 Pages, 2008/10

JAEA-Technology-2008-062.pdf:11.62MB

The reactor containment of HTTR is tested to confirm leak-tight integrity of itself. "Type A test" has been conducted in accordance with the standard testing method in JEAC4203 since the preoperational verification of the containment was made. Type A tests are identified as basic one for measuring containment leakage rate, it costs much, however. Therefore, the test program for HTTR was revised to adopt an efficient and economical alternatives including "Type B and Type C tests". In JEAC4203-2004, following requirements are specified for adopting alternatives: upward trend of leakage rate by Type A test due to aging should not be recognized; criterion of combined leakage rate with Type B and Type C tests should be established; the criteria for Type A test and combined leakage rate test should be satisfied; correlation between the leakage rates by Type A test and combined leakage rate test should be recognized. Considering the performances of the tests, the policies of corresponding to the requirements were developed, which were accepted by the regulatory agency. This report presents an outline of the tests, identifies issues on the conventional test and summarizes the policies of corresponding to the requirements and of implementing the tests based on the revised program.

JAEA Reports

Water chemistry control in HTTR

Sekita, Kenji; Furusawa, Takayuki; Emori, Koichi; Ishii, Taro*; Kuroha, Misao; Hayakawa, Masato; Ouchi, Hiroshi

JAEA-Technology 2008-057, 45 Pages, 2008/08

JAEA-Technology-2008-057.pdf:12.0MB

A carbon steel used is used for the main material for the components and pipings of the pressurized water cooling system etc. that are the reactor cooling system of the HTTR. Water quality is managed by using the hydrazine in the coolant of the water cooling system to prevent corrosion of the components and deoxidize the coolant. Also, regular analysis is carried out for the confirmation of the water quality. The following results were obtained through the water quality analysis. (1) In the pressurized water cooling system, the coolant temperature rises higher due to the heat removal of the primary coolant. So, the ammonia was formed in the thermal decomposition of the hydrazine. The electric conductivity increased, while the concentration of the hydrazine decreased, there was no problem as the plan it. (2) Thermal decomposition of the hydrazine was not occurred in the auxiliary water cooling system and vessel cooling system because of the coolant temperature was low. (3) An indistinct procedure is clarified and procedure of water quality analysis was established in the HTTR. (4) It is assumed that the corrosion of the components in these water cooling system hardly occurred from measurement results of dissolved oxide and chloride ion. Thus, the water quality was managed enough.

JAEA Reports

Leakage rate test for reactor containment vessel of HTTR

Kondo, Masaaki; Sekita, Kenji; Emori, Koichi; Sakaba, Nariaki; Kimishima, Satoru; Kuroha, Misao; Noji, Kiyoshi; Aono, Tetsuya; Hayakawa, Masato

JAEA-Testing 2006-002, 55 Pages, 2006/07

JAEA-Testing-2006-002.pdf:6.36MB

The leakage rate test for the reactor containment vessel of HTTR is conducted in accordance with the absolute pressure method provided in Japan Electric Association Code(JEAC4203). Although leakage test of a reactor containment vessel is, in general, performed in condition of reactor coolant pressure boundary to be opened in order to simulate an accident, the peculiar test method to HTTR which use the helium gas as reactor coolant has been established, in which the pressure boundary is closed to avoid the release of fission products into the environment of the reactor containment vessel. The system for measuring and calculating the data for evaluating the leakage rate for containment vessel of HTTR was developed followed by any modifications. Recently, the system has been improved for more accurate and reliable one with any useful functions including real time monitoring any conditions related to the test. In addition, the configuration of containment vessel boundary for the test and the calibration method for the detectors for measuring temperature in containment vessel have been modified by reflecting the revision of the Code mentioned above. This report describes the method, system configuration, and procedures for the leakage rate test for reactor containment vessel of HTTR.

JAEA Reports

Report of investigation on malfunction of reserved shutdown system in HTTR

Hamamoto, Shimpei; Iigaki, Kazuhiko; Shimizu, Atsushi; Sawahata, Hiroaki; Kondo, Makoto; Oyama, Sunao; Kawano, Shuichi; Kobayashi, Shoichi; Kawamoto, Taiki; Suzuki, Hisashi; et al.

JAEA-Technology 2006-030, 58 Pages, 2006/03

JAEA-Technology-2006-030.pdf:10.69MB

During normal operation of High Temperature engineering Test Reactor (HTTR) in Japan Atomic Energy Agency (JAEA), the reactivity is controlled by the Control Rods (CRs) system which consists of 32 CRs (16 pairs) and 16 Control Rod Drive Mechanisms (CRDMs). The CR system is located in stand-pipes accompanied by the Reserved Shutdown System (RSS). In the unlikely event that the CRs fail to be inserted, the RSS is provided to insert B$$_{4}$$C/C pellets into the core. The RSS shall be designed so that the reactor should be held subcriticality from any operation condition by dropping in the pellets. The RSS consists of B$$_{4}$$C/C pellets, hoppers which contain the pellets, electric plug, driving mechanisms, guide tubes and so on. In accidents when the CRs cannot be inserted, an electric plug is pulled out by a motor and the absorber pellets fall into the core by gravity. A trouble, malfunction of one RSS out of sixteen, occurred during a series of the pre-start up checks of HTTR on February 21, 2005. We investigated the cause of the RSS trouble and took countermeasures to prevent the issue. As the result of investigation, the cause of the trouble was attributed to the following reason: In the motor inside, The Oil of grease of the multiplying gear flowed down from a gap of the oil seal which has been deformed and was mixed with abrasion powder of brake disk. Therefore the adhesive mixture prevented a motor from rotating.

Oral presentation

Consolidated management of research result and publication fee payment

Hayakawa, Misa; Nakajima, Hidemitsu

no journal, , 

no abstracts in English

23 (Records 1-20 displayed on this page)