Annual report of the research works with joint-use JAERI facilities for fiscal 1974

International Nuclear Information System (INIS)

1975-01-01

Results of the research works by national universities with JAERI's (Japan Atomic Energy Research Institute) joint-use facilities for fiscal 1974 are described. Facilities are research reactors, Co-60, Linac, etc. Research results are presented in individual summaries, covering radiation damage and solid state physics, activation analysis and nuclear chemistry, irradiation effects, etc. Results of the joint works with JAERI are also presented similarly. (Mori, K.)

Review of research institute library activity through the contributed papers. The case of the Japan Atomic Energy Research Institute Library

International Nuclear Information System (INIS)

Ikeda, Kiyoshi; Habara, Tadashi; Ishikawa, Masashi; Itabashi, Keizo; Yonezawa, Minoru

2007-03-01

The Japan Atomic Energy Research Institute (JAERI) Library had contributed 312 papers through the library activities in half-century. We made the bibliography of these papers as well as categorized them into general', 'library functions', 'management and promotion of research results' and 'international exchange of information' and explained them under the four categories. A subject index, an author index of these papers and chronology of JAERI library activities were also compiled for reference. (author)

Proceedings of the third JAERI-KAERI joint seminar on post irradiation examination technology

International Nuclear Information System (INIS)

1999-09-01

Between the Department of JMTR of the Japan Atomic Energy Research Institute (JAERI) and the Nuclear Fuel Cycle Research Group of the Korea Atomic Energy Research Institute (KAERI), it has been periodically carried out the collaboration on technical information exchange by specialists and scientists, under the Arrangement of the Implementation of Cooperative Research Program in the Field of Peaceful Uses of Nuclear between JAERI and KAERI. And JAERI-KAERI joint seminar has been held every three years. The 1st and 2nd JAERI-KAERI Joint Seminars were held in November 1992 at JAERI and in September 1995 at KAERI, respectively. The 3rd JAERI-KAERI Joint Seminar was held on 25 and 26 March, 1999 at the Oarai Research Establishment of JAERI. In this seminar, total participants of 84 were joined from JAERI, KAERI, Hanyang University, Japan Nuclear Cycle Development Institute, Oarai Branch of Institute for Materials Research (IMR) of Tohoku University, Nippon Nuclear Fuel Development Co., Ltd., Nuclear Development Corporation and others. Contributed presentations were in three sessions; Current status and future perspectives on PIE, PIE techniques and Evaluation of PIE data. Re-assembling technique for JOYO fuel, Nd-YAG laser welding technique, grain boundary analysis using FEG-TEM, lift time estimation of PWR Rod Cluster Control Assembly (RCCA) rodlet and failure analysis of Korea Nuclear Power Plant (KNP) fuel have been widely noticed as topic items on PIE. And some comments from PIE user, were pointed out that the nano-PIE technique, the flexibility to ad-hoc demands on testing space or utilization, and the international collaboration were very important for the next generation's PIE. The 34 of the present papers are indexed individually. (J.P.N.)

Proceedings of the third JAERI-KAERI joint seminar on post irradiation examination technology

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-09-01

Between the Department of JMTR of the Japan Atomic Energy Research Institute (JAERI) and the Nuclear Fuel Cycle Research Group of the Korea Atomic Energy Research Institute (KAERI), it has been periodically carried out the collaboration on technical information exchange by specialists and scientists, under the Arrangement of the Implementation of Cooperative Research Program in the Field of Peaceful Uses of Nuclear between JAERI and KAERI. And JAERI-KAERI joint seminar has been held every three years. The 1st and 2nd JAERI-KAERI Joint Seminars were held in November 1992 at JAERI and in September 1995 at KAERI, respectively. The 3rd JAERI-KAERI Joint Seminar was held on 25 and 26 March, 1999 at the Oarai Research Establishment of JAERI. In this seminar, total participants of 84 were joined from JAERI, KAERI, Hanyang University, Japan Nuclear Cycle Development Institute, Oarai Branch of Institute for Materials Research (IMR) of Tohoku University, Nippon Nuclear Fuel Development Co., Ltd., Nuclear Development Corporation and others. Contributed presentations were in three sessions; Current status and future perspectives on PIE, PIE techniques and Evaluation of PIE data. Re-assembling technique for JOYO fuel, Nd-YAG laser welding technique, grain boundary analysis using FEG-TEM, lift time estimation of PWR Rod Cluster Control Assembly (RCCA) rodlet and failure analysis of Korea Nuclear Power Plant (KNP) fuel have been widely noticed as topic items on PIE. And some comments from PIE user, were pointed out that the nano-PIE technique, the flexibility to ad-hoc demands on testing space or utilization, and the international collaboration were very important for the next generation's PIE. The 34 of the present papers are indexed individually. (J.P.N.)

TIT reactor laboratory course using JAERI and PNC large experimental facilities

International Nuclear Information System (INIS)

Sekimoto, Hiroshi; Obara, Toru; Ohtani, Nobuo.

1995-01-01

This report is presented on a reactor laboratory course for graduate students using large facilities in national laboratories in Japan. A reactor laboratory course is offered every summer since 1990 for all graduate students in the Nuclear Engineering Course in Tokyo Institute of Technology (TIT), where the students can choose one of the experiments prepared at Japan Atomic Energy Research Institute (JAERI), Power Reactor and Nuclear Fuel Development Corporation (PNC) and Research Reactor Institute, Kyoto University (KUR). Both JAERI and PNC belong to Science and Technology Agency (STA). This is the first university curriculum of nuclear engineering using the facilities owned by the STA laboratories. This type of collaboration is promoted in the new Long-Term Program for Research, Development and Utilization of Nuclear Energy adopted by Atomic Energy Commission. Most students taking this course reported that they could learn so much about reactor physics and engineering in this course and the experiment done in large laboratory was a very good experience for them. (author)

Present status of spallation target development. JAERI/KEK Joint Project

International Nuclear Information System (INIS)

Hino, R.; Kaminaga, M.; Haga, K.

2001-01-01

The Japan Atomic Energy Research Institute (JAERI) and the High Energy Accelerator Research Organization (KEK) are promoting a plan to construct a neutron scattering facility under the JAERI/KEK Joint Project. Design and R and D works are being carried out vigorously for realizing the mercury target system consisting of the mercury target, moderators and reflectors working as a spallation neutron source, as well as a remote handling system for exchanging such components which will be highly irradiated. This report introduces an outline of the present status of design and development activities on the spallation target system. (author)

Summaries of research and development activities by using JAERI computer system in FY2003. April 1, 2003 - March 31, 2004

International Nuclear Information System (INIS)

2005-03-01

Center for Promotion of Computational Science and Engineering (CCSE) of Japan Atomic Energy Research Institute (JAERI) installed large computer system included super-computers in order to support research and development activities in JAERI. CCSE operates and manages the computer system and network system. This report presents usage records of the JAERI computer system and big user's research and development activities by using the computer system in FY2003 (April 1, 2003 - March 31, 2004). (author)

Development of superconducting pulsed poloidal coil in JAERI

International Nuclear Information System (INIS)

Shimamoto, S.; Okuno, K.; Ando, T.; Tsuji, H.

1990-01-01

In the Japan Atomic Energy Research Institute, (JAERI), development work on pulsed superconductors and coils started in 1979, aiming at the demonstration of the applicability of superconducting technologies to pulsed poloidal coils in a fusion reactor. Initially our effort was concentrated mainly on the development of pool-cooled large-current pulsed conductors. Over the past ten years, superconducting technology has made great progress and the forced-flow cooled coil has assumed great importance in the development work. Now the Demo Poloidal Coil Project is in progress in JAERI, and three large forced-flow cooled coils have so far been fabricated and tested. Many improvements have been achieved in ac-loss performance and mechanical characteristics. (author)

Workshop of Advanced Science Research Center, JAERI. Nuclear physics and nuclear chemistry of superheavy elements

International Nuclear Information System (INIS)

Nishio, Katsuhisa; Nishinaka, Ichiro; Ikezoe, Hiroshi; Nagame, Yuichiro

2004-03-01

A liquid drop model predicts that the fission barrier of a nucleus whose atomic number (Z) is larger than 106 disappears, so that such heavier nuclei as Z > 106 cannot exist. The shell effect, however, drastically changes structure of the fission barrier and stabilizes nucleus against fission, predicting the presence of super heavy element (SHE, Z=114-126) with measurable half-life. In the SHE region, a wave function of outermost electron of an atom, which controls chemical properties of an elements, is disturbed or changed by relativistic effects compared to the one from the non-relativistic model. This suggests that the SHEs have different chemical properties from those of lighter elements belonging to the same family. The chemistry of SHEs requires event by event analysis to reveal their chemical properties, thus is called 'atom-at-a-time chemistry'. Japan Atomic Energy Research Institute (JAERI) has been investigating fusion mechanism between heavy nuclei to find out favorable reactions to produce SHE by using JAERI-tandem and booster accelerator. In the JAERI-tandem facility, isotopes of Rf and Db are produced by using actinide targets such as 248 Cm in order to investigate their chemical properties. The present workshop was held in Advanced Science Research Center of JAERI at February 27-28 (2003) in order to discuss current status and future plans for the heavy element research. The workshop also included topics of the radioactive nuclear beam project forwarded by the JAERI-KEK cooperation and the nuclear transmutation facility of J-PARC. Also included is the nuclear fission process as a decay characteristic of heavy elements. There were sixty participants in the workshop including graduate and undergraduate eleven students. We had guests from Germany and Hungary. Through the workshop, we had a common knowledge that researches on SHE in Japan should fill an important role in the world. (author)

Summaries of research and development activities by using JAERI computer system in FY2004 (April 1, 2004 - March 31, 2005)

International Nuclear Information System (INIS)

2005-08-01

Center for Promotion of Computational Science and Engineering (CCSE) of Japan Atomic Energy Research Institute (JAERI) installed large computer systems including super-computers in order to support research and development activities in JAERI. CCSE operates and manages the computer system and network system. This report presents usage records of the JAERI computer system and the big users' research and development activities by using the computer system in FY2004 (April 1, 2004 - March 31, 2005). (author)

Decommissioning project feedback experience in the Japan Atomic Energy Research Institut

International Nuclear Information System (INIS)

Yanagihara, S.; Tachibana, M.; Miyajima, K.

2003-01-01

Since starting the research and development program for peaceful use of nuclear energy in 1950's, various research and demonstration facilities have been constructed in research organizations, universities and commercial sectors in Japan. Some of the nuclear facilities constructed in the early stage of research and development have been retired to be decommissioned because of completion of the initial objectives in the Japan Atomic Energy Research Institute (JAERI). On the other hand, since the first commercial operation of nuclear power plant (1968), the number of nuclear power plants has increased up to 52 plants operating as of August 2003 in Japan. The shear of nuclear energy accounts approximately for 35% of electricity generation in total at present time. However, several nuclear power plants have been operated for more than 25 years and two nuclear power plants are expected to be finally shutdown by 2010 to be eventually decommissioned. The Tokai Power Station, the oldest Japanese nuclear power plant operated by the Japan Atomic Power Company, was permanently shutdown from March 1998 and it is in decommissioning stage at this time. The Fugen, which is advanced thermal reactor operated by the Japan Nuclear Cycle Development Institute (JNC), was finally shutdown on March, 2003 after 25 years operation to be decommissioned. In addition, relating to planned unification between JAERI and JNC in 2005, the studies have been in progress on decommissioning and radioactive waste treatment and disposal; the cost was estimated to be 10 to 30 billion Japanese yens per year during 80 years for decommissioning of nearly 200 nuclear facilities. Decommissioning of nuclear facilities is thus getting to be one of important issues in Japan. Decommissioning of nuclear facilities might be possible using conventional and/or partially improved technology. However, reviewing project feedback experience on decommissioning and decontamination might contribute to solve various issues

Report of the research results with JAERI's facilities in fiscal 1975

International Nuclear Information System (INIS)

1976-07-01

Results of the research works by educational institutions using facilities of the Japan Atomic Energy Research Institute in fiscal 1975 are reported in individual summaries. Facilities utilized are research reactors, Co-60 irradiation facilities, hot laboratory, Linac and electron accelerators. Fields of research are the following: nuclear physics, radiation damage/solid-state physics, positron annihilation, activation analysis/nuclear chemistry, hot atom chemistry, irradiation effects, biology, and neutron diffraction; and, cooperative works to JAERI. (Mori, K.)

Evaluation of socio-economic effects of R and D results at Japan Atomic Energy Research Institute. 2. Socio-economic evaluation of the basic research at JAERI

International Nuclear Information System (INIS)

2003-11-01

The Japan Atomic Energy Research Institute (JAERI), as a core organization devoted to comprehensive nuclear energy research, has steadily promoted various types of research and development (R and D) studies since its establishment in June 1956. Research activities are aimed at performing (1) R and D for nuclear energy, (2) the utilization and application of radiation-based technologies, and (3) the establishment of basic and fundamental research in the nuclear field. Last year, the socio-economic effects on items (1) and (2) were qualitatively and quantitatively evaluated. The quantitative evaluation of item (3) from the viewpoint of a socio-economic effect, however, calls for a different concept and methodology than previously used cost-benefit approach. Achievements obtained from the activities conducted over the last 10 years implied that socio-economics in basic research funded by the public could contribute to the (1) increase in useful intellectual stocks, (2) upbringing of highly skilled college graduates, (3) construction of new scientific facilities and creation of methodologies, (4) stimulation and promotion of social interrelations by networking, (5) increase of one's ability to solve scientific problems, and (6) establishment of venture companies. In this study, we focused on item (4) for the analysis because it assumed that the external economic effect has a link with the socio-economic effects accompanying the networking formation. For the criteria of socio-economic effects we assume that the external effect becomes significant in proportion to the width of networking and/or the magnitude of cooperation measured by numbers of co-writing studies between JAERI and the research bodies, namely private and governmental sectors and universities. Taking these criteria into consideration, the subsequent four items are prepared for quantitative study. They are (1) to clarify the basic research fields where JAERI has been established a significant effort to

LOCA and RIA studies at JAERI

International Nuclear Information System (INIS)

Sugiyama, Tomoyuki; Nagase, Fumihisa; Nakamura, Jinichi; Fuketa, Toyoshi

2004-01-01

To provide a data base for the regulatory guide of light water reactors, behavior of reactor fuels during off-normal and postulated accident conditions such as loss-of-coolant accident (LOCA) and reactivity-initiated accident (RIA) is being studied at the Japan Atomic Energy Research Institute (JAERI). The LOCA program consists of integral thermal shock tests and other separate tests for oxidation rate and mechanical property of fuel claddings. Prior to the tests on irradiated claddings, the tests have been conducted on non-irradiated claddings to examine separate effects of corrosion and hydrogen absorption during reactor operation. The tests on irradiated claddings have recently been started and results have been obtained. As for an RIA study, a series of experiments with high burnup fuel rods is being performed by using pulse irradiation capability of the NSRR. This paper presents recent results obtained from the LOCA and RIA studies at JAERI. (Author)

Waste management for JAERI fusion reactors

International Nuclear Information System (INIS)

Tobita, K.; Nishio, S.; Konishi, S.; Jitsukawa, S.

2004-01-01

In the fusion reactor design study at Japan Atomic Energy Institute (JAERI), several waste management strategies were assessed. The assessed strategies are: (1) reinforced neutron shield to clear the massive ex-shielding components from regulatory control; (2) low aspect ratio tokamak to reduce the total waste; (3) reuse of liquid metal breeding material and neutron shield. Combining these strategies, the weight of disposal waste from a low aspect ratio reactor VECTOR is expected to be comparable with the metal radwaste from a light water reactor (∼4000 t)

Status of the HTGR development program in Japan

International Nuclear Information System (INIS)

Saito, S.

1991-01-01

According to the revision of the Long-Term Program for Development and Utilization of Nuclear Energy issued by the Japanese Atomic Energy Commission, High Temperature Engineering Test Reactor (HTTR), which is the first HTGR in Japan, will be constructed by the Japan Atomic Energy Research Institute (JAERI) in order to establish and upgrade the technology basis for an HTGR, serving at the same time as a potential tool for new and innovative basic research. The budget for the construction of the HTTR was approved by the Government and JAERI is now proceeding with the construction design of the HTTR, focussing the first criticality in the end of FY 1995. In order to establish and upgrade HTGR technology basis systematically and efficiently, and also to carry out innovative basic research on high temperature technologies, Japan will perform necessary R and D mainly at JAERI, which is a leading organization of the R and D. In addition, in order to promote the R and D on HTGRs more efficiently, Japan will promote the existing international cooperation with the research organizations in foreign countries. (author). 5 figs, 3 tabs

Next generation neutron scattering at Neutron Science Center project in JAERI

International Nuclear Information System (INIS)

Yamada, Yasusada; Watanabe, Noboru; Niimura, Nobuo; Morii, Yukio; Katano, Susumu; Aizawa, Kazuya; Suzuki, Jun-ichi; Koizumi, Satoshi; Osakabe, Toyotaka.

1997-01-01

Japan Atomic Energy Research Institute (JAERI) has promoted neutron scattering researches by means of research reactors in Tokai Research Establishment, and proposes 'Neutron Science Research Center' to develop the future prospect of the Tokai Research Establishment. The scientific fields which will be expected to progress by the neutron scattering experiments carried out at the proposed facility in the Center are surveyed. (author)

Production of radioisotopic gamma radiation sources in JAERI

International Nuclear Information System (INIS)

Katoh, Hisashi; Kogure, Hiroto; Suzuki, Kyohei

1980-04-01

The present state of production of gamma radiation sources in Japan Atomic Energy Research Institute (JAERI) is described. Sources of 192 Ir, 60 Co and 170 Tm for industrial and 198 Au and 192 Ir for medical applications are produced and delivered routinely by JAERI. Prefabricated assembly targets are irradiated in JRR-2, JRR-3, JRR-4 or JMTR. The irradiated targets are disassembled in a heavy density concrete cave or a lead-shielded cell, depending on the level of radioactivity. The yield of radioactivity in each target is measured with the aid of an ionization chamber. Where necessary, irradiated targets are encapsulated hermetically in capsules of aluminium, stainless steel or other material. The yield of radioactivity is estimated in relation with the burn-up of target nuclide and product nuclide. (author)

Investigation regarding the amount of disused components and the radioactive inventory at Mutsu Establishment, JAERI

International Nuclear Information System (INIS)

Hatanaka, Kazuo; Ooeda, Etsurou; Watanabe, Masaaki

2003-01-01

About 200 tons of the disused components, which were used for fuel removal, are stored in Mutsu Establishment, Japan Atomic Energy Research Institute (JAERI). In order to settle the decommissioning plan, RANDEC made an investigation regarding the amount of disused components and the radioactive inventory in Mutsu Establishment under a contract with JAERI. This report describes the estimation results of radioactive inventory and weight of radioactive wastes regarding the disused equipment such as an ion-exchange resin tank, a injection pump and equipment for fuel removal. (author)

Manpower development and international cooperation in Nuclear Technology and Education Center, JAERI

International Nuclear Information System (INIS)

Shiba, Koreyuki; Tojo, Takao; Takada, Kazuo; Nomura, Masayuki

1996-01-01

Nuclear Technology and Education Center was founded in 1958 and now has two branches, Tokyo Education Center at Bunkyo-ku, Tokyo and Tokai Education Center at Tokai, Ibaraki-ken. The objective was to educate and train nuclear engineers and scientists for implementing the nation's program of atomic energy research, development and utilization. A variety of training courses have been prepared and carried out to meet the requirements of the nuclear community. In recent years, activities of getting the public acceptance have become important for nuclear energy deployment in Japan. Many short courses have been implemented at JAERI sites and cities for providing the public including high school teachers with basic knowledge on nuclear energy. International training programs of the center were started with the cooperation of the Japan International Cooperation Agency (JICA) in 1985 and of the International Atomic Energy Agency (IAEA) in 1987. International seminars were implemented for improving nuclear safety by inviting participants from the former Soviet Union, central/east European countries and the neighboring countries of Japan under the direction of the Science and Technology Agency (STA) in 1992. STA and JAERI are starting new programs of helping Asian and Pacific countries to develop nuclear manpower. (author)

Current and anticipated uses of thermal hydraulic codes at the Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Akimoto, Hajime; Kukita; Ohnuki, Akira

1997-01-01

The Japan Atomic Energy Research Institute (JAERI) is conducting several research programs related to thermal-hydraulic and neutronic behavior of light water reactors (LWRs). These include LWR safety research projects, which are conducted in accordance with the Nuclear Safety Commission's research plan, and reactor engineering projects for the development of innovative reactor designs or core/fuel designs. Thermal-hydraulic and neutronic codes are used for various purposes including experimental analysis, nuclear power plant (NPP) safety analysis, and design assessment

Japan: 45 Years of INIS

International Nuclear Information System (INIS)

Yonezawa, Minoru

2015-01-01

I would like to congratulate INIS on its 45th anniversary. Japan is a founding member of this international cooperation program, and the Japan Atomic Energy Agency (formerly, Japan Atomic Energy Research Institute — JAERI) was appointed as the national center of INIS by the Japanese government. We have contributed to the collection, classification, indexing, abstracting and submission of nuclear literature published in our country, as well as promoted the INIS database within our country. I have been engaged in INIS activities for many years and have a lot of experience with INIS. On the occasion of INIS’ 45th anniversary, I would like to look back on this experience. I started my career at JAERI in 1984. The first regional training seminar for the Far East was held in Tokyo in October 1984. I was assigned to the Library Division of JAERI, but I worked as support staff for the regional training seminar. During the seminar, I had an opportunity to attend the technical tour with the seminar participants to the University of Library and Information Science, research laboratories, etc., in Tsukuba Science City. This was my first involvement with INIS. It was a very impressive and interesting experience

Modular programming method at JAERI

International Nuclear Information System (INIS)

Asai, Kiyoshi; Katsuragi, Satoru

1982-02-01

In this report the histories, concepts and a method for the construction and maintenance of nuclear code systems of Japan Atomic Energy Research Institute (JAERI) are presented. The method is mainly consisted of novel computer features. The development process of the features and experiences with them which required many man-months and efforts of scientists and engineers of JAERI and a computer manufacturer are also described. One of the features is a file handling program named datapool. The program is being used in code systems which are under development at JAERI. The others are computer features such as dynamic linking, reentrant coding of Fortran programs, interactive programming facility, document editor, quick system output viewer and editor, flexible man-machine interactive Fortran executor, and selective use of time-sharing or batch oriented computer in an interactive porgramming environment. In 1980 JAERI has replaced its two old computer systems by three FACOM M-200 computer systems and they have such features as mentioned above. Since 1981 most code systems, or even big single codes can be changed to modular code systems even if the developers or users of the systems will not recognize the fact that they are using modular code systems. The purpose of this report is to describe our methodology of modular programming from aspects of computer features and some of their applications to nuclear codes to get sympathetic understanding of it from persons of organizations who are concerned with the effective use of computers, especially, in nuclear research fields. (author)

Development and operation of nuclear material accounting system of JAERI

International Nuclear Information System (INIS)

Obata, Takashi; Numata, Kazuyoshi; Namiki, Shinji; Yamauchi, Takahiro

2003-01-01

For the nuclear material accounting system, the mainframe computer had been used in Japan Atomic Energy Research Institute (JAERI). For the purpose of more flexible use and easy operation, the PC base accounting system has been developed since 1999, and operation started from October, 2002. This system consists of the server with the database software and the client PC with original application software. The functions of this system are the input and edit of data, the creation of inspection correspondence data, and creation of a report to the states. Furthermore, it is also possible to create the Web application which used accounting data on a user level by using the programming language. Now, this system is being specialized in JAERI, but it is during a plan to develop as a system which can be also used at other institutions and organization. In the paper, the outline and operating situation of the nuclear material accounting system of JAERI are presented. (author)

Neutron Science Project at JAERI

International Nuclear Information System (INIS)

Oyama, Yukio

1998-01-01

Japan Atomic Energy Research Institute, JAERI, is proposing the Neutron Science Project which aims at bringing about scientific and technological innovation in the fields of basic science and nuclear technology for the 21st century, using high intense spallation neutron source. The research areas to be promoted by the project are neutron structural biology, material science, nuclear physics and various technology developments for accelerator-driven transmutation of long-lived radionuclides which are associated with nuclear power generation. JAERI has been carrying out a R and D program for the partitioning and transmutation with the intention to solve the problem of nuclear fuel cycle backend. The accelerator-driven transmutation study is also covered with this program. In the present stage of the project, a conceptual design is being prepared for a research complex utilizing spallation neutrons, including a high intensity pulsed and steady spallation neutron source with 1.5 GeV and 8 MW superconducting proton linac. The idea and facility plan of the project is described, including the status of technological development of the accelerator, target and facilities. (author)

Neutron Science Project at JAERI

Energy Technology Data Exchange (ETDEWEB)

Oyama, Yukio [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1998-03-01

Japan Atomic Energy Research Institute, JAERI, is proposing the Neutron Science Project which aims at bringing about scientific and technological innovation in the fields of basic science and nuclear technology for the 21st century, using high intense spallation neutron source. The research areas to be promoted by the project are neutron structural biology, material science, nuclear physics and various technology developments for accelerator-driven transmutation of long-lived radionuclides which are associated with nuclear power generation. JAERI has been carrying out a R and D program for the partitioning and transmutation with the intention to solve the problem of nuclear fuel cycle backend. The accelerator-driven transmutation study is also covered with this program. In the present stage of the project, a conceptual design is being prepared for a research complex utilizing spallation neutrons, including a high intensity pulsed and steady spallation neutron source with 1.5 GeV and 8 MW superconducting proton linac. The idea and facility plan of the project is described, including the status of technological development of the accelerator, target and facilities. (author)

Current and anticipated uses of thermal hydraulic codes at the Japan Atomic Energy Research Institute

Energy Technology Data Exchange (ETDEWEB)

Akimoto, Hajime; Kukita; Ohnuki, Akira [Japan Atomic Energy Research Institute, Ibaraki (Japan)

1997-07-01

The Japan Atomic Energy Research Institute (JAERI) is conducting several research programs related to thermal-hydraulic and neutronic behavior of light water reactors (LWRs). These include LWR safety research projects, which are conducted in accordance with the Nuclear Safety Commission`s research plan, and reactor engineering projects for the development of innovative reactor designs or core/fuel designs. Thermal-hydraulic and neutronic codes are used for various purposes including experimental analysis, nuclear power plant (NPP) safety analysis, and design assessment.

Summary and statistical analysis of environmental monitoring data in the Oarai Research Establishment, Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Tamura, Katsuhiro; Kitano, Kyoshiro; Sibanuma, Yukio; Takasaki, Koichi; Ohhata, Tsutomu

1998-03-01

In the Oarai Research Establishment, Japan Atomic Energy Research Institute (JAERI), the environmental monitoring has been conducted for about 29 years since April 1968. The results are discussed for evaluation of long-term and short-term fluctuation in the radiological conditions in the Oarai area. This report summarises the data of the environmental monitoring in Oarai, and statistical analyses were made of the data collected from 1985 through 1994. (author)

Present status and future perspective of research and test reactors in JAERI

International Nuclear Information System (INIS)

Baba, Osamu; Kaieda, Keisuke

1999-01-01

Since 1957, Japan Atomic Energy Research Institute (JAERI) has constructed several research and test reactors to fulfil a major role in the study of nuclear energy and fundamental research. At present, four reactors, the Japan Research Reactor No. 3 and No. 4 (JRR-3M and JRR-4 respectively), the Japan Materials Testing Reactor (JMTR) and the Nuclear Safety Research Reactor (NSRR), are in operation, and a new High Temperature Engineering Test Reactor (HTTR) has reached first criticality and is waiting for the power-up test. This paper introduce these reactors and describe their present operational status. The recent tendency of utilization and future perspectives are also reported. (author)

Present status and future perspective of research and test reactors in JAERI

Energy Technology Data Exchange (ETDEWEB)

Baba, Osamu [Japan Atomic Energy Research Inst., Oarai, Ibaraki (Japan). Oarai Research Establishment; Kaieda, Keisuke

1999-08-01

Since 1957, Japan Atomic Energy Research Institute (JAERI) has constructed several research and test reactors to fulfil a major role in the study of nuclear energy and fundamental research. At present, four reactors, the Japan Research Reactor No. 3 and No. 4 (JRR-3M and JRR-4 respectively), the Japan Materials Testing Reactor (JMTR) and the Nuclear Safety Research Reactor (NSRR), are in operation, and a new High Temperature Engineering Test Reactor (HTTR) has reached first criticality and is waiting for the power-up test. This paper introduce these reactors and describe their present operational status. The recent tendency of utilization and future perspectives are also reported. (author)

Verification of the computational dosimetry system in JAERI (JCDS) for boron neutron capture therapy

International Nuclear Information System (INIS)

Kumada, H; Yamamoto, K; Matsumura, A; Yamamoto, T; Nakagawa, Y; Nakai, K; Kageji, T

2004-01-01

Clinical trials for boron neutron capture therapy (BNCT) by using the medical irradiation facility installed in Japan Research Reactor No. 4 (JRR-4) at Japan Atomic Energy Research Institute (JAERI) have been performed since 1999. To carry out the BNCT procedure based on proper treatment planning and its precise implementation, the JAERI computational dosimetry system (JCDS) which is applicable to dose planning has been developed in JAERI. The aim of this study was to verify the performance of JCDS. The experimental data with a cylindrical water phantom were compared with the calculation results using JCDS. Data of measurements obtained from IOBNCT cases at JRR-4 were also compared with retrospective evaluation data with JCDS. In comparison with phantom experiments, the calculations and the measurements for thermal neutron flux and gamma-ray dose were in a good agreement, except at the surface of the phantom. Against the measurements of clinical cases, the discrepancy of JCDS's calculations was approximately 10%. These basic and clinical verifications demonstrated that JCDS has enough performance for the BNCT dosimetry. Further investigations are recommended for precise dose distribution and faster calculation environment

Proceedings of the fifth Australia-Japan workshop on plasma diagnostics

Energy Technology Data Exchange (ETDEWEB)

NONE

2000-03-01

The fifth Australia-Japan Workshop on Plasma Diagnostics was held at Japan Atomic Energy Research Institute (JAERI), Naka, Japan, from December 15 to 17 in 1999. The first workshop was held at JAERI, Naka in 1989, and the workshops have been held almost every two years in Australia and Japan under the Agreement between the Government of Japan and the Government of Australia on cooperation in the field of Science and Technology. In the workshops, latest research works for plasma diagnostics and plasma experiment have been presented and discussed. The research works of both countries have been developed, and the mutual understanding became deeper through the workshops. In the fifth workshop, the statuses of JT-60U (JAERI), LHD (National Institute for Fusion Science) and H-1NF (Australian National University) were introduced, and the latest research works for plasma diagnostics were also presented. The active and deeper discussions were performed. This report contains twenty-eight papers presented at the workshop. The 25 of the presented papers are indexed individually. (J.P.N.)

Environmental monitoring activities in JAERI at JCO accident

International Nuclear Information System (INIS)

Yamaguchi, Takenori

2001-01-01

The Japan Atomic Energy Research Institute (JAERI) was involved in a various environmental monitoring activities, such as environmental radiation monitoring by monitoring post and monitoring car, air dust, soil, green vegetables and water sampling and measurements, neutron and gamma radiation dose rate survey around the JCO site for emergency response actions to the JCO accident on September 30, 1999. These activities were performed from Sep. 30 to Oct. 2, and were the initial and first stage activities in the emergency environmental monitoring activities. JAERI has been assigned to the public organization to support the government by Disaster Prevention Fundamental Law. These activities were performed to ensure the public safety to avoid the effluent of the accident. Through the environmental monitoring activities, I recognized that the importance of the accident information to make the best use for the initial environmental monitoring, and the monitoring information exchange is important to perform the effective monitoring activities for taking the early countermeasures such as evacuation to the public. (author)

An outcome of nuclear safety research in JAERI. Predominance of research

International Nuclear Information System (INIS)

Yanagisawa, Kazuaki; Kawashima, Kei; Ito, Keishiro; Katsuki, Chisato

2010-02-01

Bibliometric study by means of research papers revealed the followings; (1) Nuclear Safety Research (NSR) performed in Japan is the 2nd highest in the world followed by USA. The share of JAERI for safety paper publication is about 25% in Japan (2) During past 25 years, JAERI is predominant at 39 safety fields out of 97, that is, 40% to the total. This is the fact revealed from comparison of published number of research papers with those of other organizations. (3) JAERI is recently changing its stress point from reactor-oriented accidents to the down stream of nuclear fuel cycling. There existed impact of TMI-2 accident on NSR-JAERI, especially in the field of thermal hydraulics, LOCA, severe accident and risk analysis. (author)

Report of the International Review Committee of the joint proposal of the Japan Hadron Facility (KEK) and the Neutron Science Project (JAERI)

International Nuclear Information System (INIS)

1999-08-01

The International Review Committee composed of twelve Japanese and foreign experts was set up under the Research Evaluation Committee of JAERI, and has reviewed the proposed joint project combining JAERI's Neutron Science Project and KEK's Japan Hadron Facility into one major facility. The review meeting took place on April 26-27, 1999, at JAERI Head quarters, Tokyo. According to the points of review given in advance, the review was implemented based on the joint project report submitted and presentations of both institutions. The Research Evaluation Committee received the review report and its explanations from the Review Committee on July 5. The Research Evaluation Committee has acknowledged appropriateness of the review results. This report describes the review results. (author)

Subcriticality of accelerator driven system by AESJ/JAERI working party

International Nuclear Information System (INIS)

Iwasaki, Tomohiko

2002-01-01

Under Atomic Energy Society of Japan (AESJ) and Japan Atomic Energy Research Institute (JAERI), a Working Party on Reactor Physics of Accelerator-Driven System (ADS-WP) has been set since March 1999 to review and investigate special subjects related to reactor physics research of Accelerator-Driven System (ADS). In the ADS-WP, the extensive and aggressive activity is being made by 25 professional members in the field of reactor physics in Japan. The ADS is now studying three subjects related to subcriticality of ADS; (1) calculation accuracy of subcriticality on ADS, (2) critical safety issues of ADS, and (3) theoretical review of subcriticality and its measurement methods. This paper describes two topics related to the subjects (1) and (2); one is an analysis of maximum reactivity potentially inserted to a subcritical core and the other is a benchmark proposal for checking calculation accuracy of subcriticality on ADS. The full specification of the calculation benchmark will be supplied by June 2002. Researchers from overseas, especially from Korea, are welcome to join this benchmark

R and D thermochemical I-S process at JAERI

International Nuclear Information System (INIS)

Onuki, K.; Kubo, S.; Nakajima, H.; Higashi, S.; Kasahara, S.; Ishiyama, S.; Okuda, H.

2004-01-01

The Japan Atomic Energy Research Institute (JAERI) has conducted a study on the thermochemical water-splitting process of the iodine-sulfur family (IS process). In the IS process, water will react with iodine and sulfur dioxide to produce hydrogen iodide and sulfuric acid, which are then decomposed thermally to produce hydrogen and oxygen. High temperature nuclear heat, mainly supplied by a High Temperature Gas-cooled Reactor (HTGR), is used to drive the endothermic decomposition of sulfuric acid. JAERI has demonstrated the feasibility of the water-splitting hydrogen production process by carrying out laboratory-scale experiments in which combined operation of fundamental reactions and separations using the IS process was performed continuously. At present, the hydrogen production test is continuing, using a scaled-up glass apparatus. Corrosion-resistant materials for constructing a large-scale plant and process improvements by introducing advanced separation techniques, such as membrane separation, are under study. Future R and D items are discussed based on the present activities. (author)

Analyses of superradiance and spiking-mode lasing observed at JAERI-FEL

CERN Document Server

Hajima, R; Nagai, R; Minehara, E J

2001-01-01

Japan Atomic Energy Research Institute (JAERI)-FEL has achieved quasi-CW lasing with an average power of 1.7 kW, the initial goal of the R and D program. The FEL extraction efficiency obtained completely exceeds the well-known limit for non-bunched beam, which is determined by the number of undulator periods. We have conducted numerical studies to characterize lasing dynamics observed at JAERI-FEL. Cavity-length detuning curves numerically obtained show good agreement with experimental results. Lasing behavior numerically obtained exhibits chaotic spiking-mode and superradiance as the cavity-length detuning approaches zero. Broadening of lasing spectrum observed in the experiments is explained by these lasing dynamics. The extraction efficiency becomes maximal at the perfect synchronization of the cavity length, where the lasing is quasi-stationary superradiance. We also compare these results with analytical theory previously reported.

Annual report of the Japan Atomic Energy Research Institute for fiscal 2003

International Nuclear Information System (INIS)

2004-01-01

The Japan Atomic Energy Research Institute (JAERI) is comprehensively promoting the research and development (R and D) activities to make the best use of variety of potentials of atomic energy. In the field of nuclear energy, researches on advanced nuclear engineering systems, high-temperature engineering experimentation and nuclear fusion are forwarded to realize long-range stable supply of energy. Researches on safety of nuclear facilities, nuclear fuel cycles, radioactive waste processing/management and environmental radioactivities have been conducted in the safety category according to 'Annual Plan for Safety Research'. And researches on health physics have been implemented to establish the fundamentals of scientific and rational radiation protection. As a diversification of nuclear science and technology, various radiation application activities such as neutron science, advanced photon science and synchrotron radiation science and application research of charged particles and radioisotopes have been promoted, which contribute to drastic advance in the fields of materials and life science etc. and to establishment of new industries. Along with these activities, basic and fundamental researches including advanced basic research, materials science research, nuclear environmental science research and advanced computational science and engineering are in progress. In addition, operation management of JMTR, JRR-3 and JRR-4 were performed. And JAERI also implemented safety management and research information management activities etc. in the peaceful use of nuclear energy. The research activities for FY 2003 are reviewed in this issue. (J.P.N.)

Development of seismic risk analysis methodologies at JAERI

International Nuclear Information System (INIS)

Tanaka, T.; Abe, K.; Ebisawa, K.; Oikawa, T.

1988-01-01

The usefulness of probabilistic safety assessment (PSA) is recognized worldwidely for balanced design and regulation of nuclear power plants. In Japan, the Japan Atomic Energy Research Institute (JAERI) has been engaged in developing methodologies necessary for carrying out PSA. The research and development program was started in 1980. In those days the effort was only for internal initiator PSA. In 1985 the program was expanded so as to include external event analysis. Although this expanded program is to cover various external initiators, the current effort is dedicated for seismic risk analysis. There are three levels of seismic PSA, similarly to internal initiator PSA: Level 1: Evaluation of core damage frequency, Level 2: Evaluation of radioactive release frequency and source terms, and Level 3: Evaluation of environmental consequence. In the JAERI's program, only the methodologies for level 1 seismic PSA are under development. The methodology development for seismic risk analysis is divided into two phases. The Phase I study is to establish a whole set of simple methodologies based on currently available data. In the Phase II, Sensitivity study will be carried out to identify the parameters whose uncertainty may result in lage uncertainty in seismic risk, and For such parameters, the methodology will be upgraded. Now the Phase I study has almost been completed. In this report, outlines of the study and some of its outcomes are described

Transactinide nuclear chemistry at JAERI

International Nuclear Information System (INIS)

Nagame, Y.; Haba, H.; Tsukada, K.

2002-01-01

Nuclear chemistry study of trans actinide elements in Japan is currently being in progress at JAERI (Japan Atomic Energy Research Institute). We have developed new experimental apparatuses: a beam-line safety system for the usage of the gas-jet coupled radioactive 248 Cm target chamber, a rotating wheel catcher apparatus for the measurement of α and spontaneous fission decay of the transactinides, MANON (Measurement system for Alpha particles and spontaneous fission events ON line), and an automated rapid chemical separation apparatus based on the high performance liquid chromatography, AIDA (Automated Ion exchange separation system coupled with the Detection apparatus for Alpha spectroscopy). The transactinide nuclei, 261 Rf and 262 Db, have been successfully produced via the reactions of 248 Cm( 18 O,5n) and 248 Cm( 19 F,5n), respectively, and the excitation functions for each reaction have been measured to evaluate the optimum irradiation condition for the production of these nuclei. The maximum cross sections in each reaction were 13 nb at the 18 O beam energy of 94-MeV and 1.5 Nb at the 103-MeV 19 F beam energy. On-line ion exchange experiments of Rf together with the lighter homologues Zr and Hf in the HCl, HNO 3 and HF solutions with AIDA have been carried out, and the results clearly show that the behavior of Rf is typical of the group-4 element. Relativistic molecular orbital calculations of the chloride and nitrate complexes of tetravalent Rf are also being performed to gain an understanding of the complex chemistry. Prospects and some recent experimental results for the nuclear chemistry study of the transactinide elements at JAERI are discussed. (author)

Construction of new critical experiment facilities in JAERI

International Nuclear Information System (INIS)

Takeshita, Isao; Itahashi, Takayuki; Ogawa, Kazuhiko; Tonoike, Kotaro; Matsumura, Tatsuro; Miyoshi, Yoshinori; Nakajima, Ken; Izawa, Naoki

1995-01-01

Japan Atomic Energy Research Institute (JAERI) has promoted the experiment research program on criticality safety since early in 1980s and two types of new critical facilities, Static Experiment Critical Facility (STACY) and Transient Experiment Critical Facility (TRACY) were completed on 1994 in Nuclear Fuel Cycle Safety Engineering Research Facility (NUCEF) of JAERI Tokai Research Establishment. STACY was designed so as to obtain critical mass data of low enriched uranium and plutonium solution which is extensively handled in LWR fuel reprocessing plant. TRACY is the critical facility where critical accident phenomenon is demonstrated with low enriched uranium nitrate solution. For criticality safety experiments with both facilities, the Fuel Treatment System is attached to them, where composition and concentration of uranium and plutonium nitrate solutions are widely varied so as to obtain experiments data covering fuel solution conditions in reprocessing plant. Design performances of both critical facilities were confirmed through mock-up tests of important components and cold function tests. Hot function test has started since January of 1995 and some of the results on STACY are to be reported. (author)

Ex-post evaluation. Research independency of the basic science study of JAERI

International Nuclear Information System (INIS)

Yanagisawa, Kazuaki; Takahashi, Shoji

2010-06-01

A research independency was defined here as the continuity and the development of a corresponding research field with an evolution of history. The authors took three fields as research parameters for the ex-post evaluation. They were all belonged to the basic science field studied in the Japan Atomic Energy Research Institute (JAERI). The first parameter was actinides, which was situated in the center of research networking from the viewpoint of socio-economy. The second parameter was positron, which was situated in the periphery of research networking and the third one was neutron, which had competition with other research organizations in Japan. The three were supported and promoted financially by the JAERI. The target year was covered from 1978 to 2002, a 25-years. INIS (International Nuclear Information Systems) operated by the International Atomic Energy Agency (IAEA) was used as the tool for the present bibliometric study. It was revealed that important factors that led the sustainable success of the research independency were the constant efforts to accomplish their mission, the education of their successors to instructing the explicit and tacit research findings and the construction of intellectual networking with learned circles and industries, those were in good collaboration with JAERI. These were quantitatively clarified. Conversely, main factors that impeded the development of the research independency were discontinuance of research caused by a retirement, a change of post or that of occupation, and an unexpected accident (death) of the core researchers. Among three parameters, the authors confirmed that there occurred the time-dependent stage of germination, development and declination of the research independency attributing to the interaction between the succession factors and impeded factors. For this kind of ex-post evaluation, the support of field research laboratory was inevitable. (author)

Annual report of the Japan Atomic Energy Research Institute, for fiscal 1988

International Nuclear Information System (INIS)

1989-01-01

At present, a half century has elapsed since the discovery of nuclear fission, and atomic energy has taken the position of basic energy already, accordingly the development and utilization of atomic energy is very important as the energy source which can supply energy for long term economically and stably. Along the long term plan of atomic energy development and utilization decided in 1987, Japan Atomic Energy Research Institute (JAERI) advanced the research and development, thus it has borne the role as the nucleus general research institute in atomic energy fields. It has exerted efforts to obtain the understanding and trust of the nation on atomic energy, and has promoted the pioneering project research, such as safety research, high temperature engineering test and research, the research and development of nuclear fusion, the research on radiation utilization and the research and development of nuclear-powered ships. In the safety research, in order to contribute to the further rooting of LWRs and the establishment of nuclear fuel cycle, the research on the engineering safety of nuclear facilities and environmental safety has been advanced. The activities in respective research fields are summarized. Also the international cooperation with USA, FRG, China and others were carried out smoothly. (K.I.)

JNC-JAERI united research report. A study on degradation of structural materials under irradiation environment in nuclear reactors

International Nuclear Information System (INIS)

Hoshiya, Taiji; Takaya, Shigeru; Nagae, Yuji; Aoto, Kazumi; Abe, Yasuhiro; Nakamura, Yasuo; Ueno, Fumiyoshi; Nemoto, Yoshiyuki; Miwa, Yukio; Tsukada, Takashi; Ohmi, Masao; Saito, Junichi; Shimizu, Michio

2004-10-01

Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Energy Research Institute (JAERI) have started a JNC-JAERI united research program cooperatively in fiscal year 2003, which has been aimed for efficient progress and synergistic effect on the research activities of both Institutes in order to lead the facing task of unification between JNC and JAERI. This study has been chosen one of the united research themes because it has been common objective for both Institutes in the research field of structural materials such as Fast Breeder Reactor and Light Water Reactors components. The purpose of the study is to clarify damage mechanism of structural materials under irradiation, and then to develop the methods for damage evaluation and detection in earlier stage of progressing process of damage along grain boundaries. In fiscal year 2003, magnetic flux density distribution (JNC) and micro-corrosion (JAERI) measurement apparatus were newly developed and equipped in Hot Facilities in two Institutes, respectively. The former apparatus, supersensitive Flux Gate sensor was installed, could detector leaked magnetic flux from material damaged by neutron irradiation. The latter one, Atomic Force Microscope was installed, could detect grain boundary corrosion loss after an electrochemical corrosion test of irradiated material. These apparatus were designed and produced in consideration of radiation resistance and remote-controlled operation to equip in hot cells. As the results of preliminary studies using Ni ion irradiated specimen, damage detection by corrosion property in grain boundary was possible but magnetic property change could not detect. We will start the study on neutron irradiation damage by employing the two apparatus as the next step. (author)

Users manual on database of the Piping Reliability Proving Tests at the Japan Atomic Energy Research Institute

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-09-01

Japan Atomic Energy Research Institute(JAERI) conducted Piping Reliability Proving Tests from 1975 to 1992 based upon the contracts between JAERI and Science and Technology Agency of Japan under the auspices of the special account law for electric power development promotion. The purposes of those tests are to prove the structural reliability of the primary cooling piping constituting a part of the pressure boundary in the water reactor power plants. The tests with large experimental facilities had ended already in 1990. After that piping reliability analysis by the probabilistic method followed until 1992. This report describes the users manual on databases about the test results using the large experimental facilities. Objectives of the piping reliability proving tests are to prove that the primary piping of the water reactor (1) be reliable throughout the service period, (2) have no possibility of rupture, (3) bring no detrimental influence on the surrounding instrumentations or equipments near the break location. The research activities using large scale piping test facilities are described. The present report does the database about the test results pairing the former report. With these two reports, all the feature of Piping Reliability Proving Tests is made clear. Briefings of the tests are described also written in Japanese or English. (author)

Annual report of the Japan Atomic Energy Research Institute for fiscal 2002

International Nuclear Information System (INIS)

2003-01-01

The Japan Atomic Energy Research Institute (JAERI) is comprehensively promoting the research and development (R and D) activities to make the best use of variety of potentials of atomic energy. In the field of nuclear energy, researches on advanced nuclear engineering systems, high-temperature engineering experimentation and nuclear fusion are forwarded to realize long-range stable supply of energy. Researches on safety of nuclear facilities, health physics and science and technology for society have been conducted in the safety category mainly according to 'Annual Plan for Safety Research' to play and important part in long-range utilization of power generation by LWRs and to meet the expectations of people by maintaining reliability and openness associated with 'safety and confidence'. As a diversification of nuclear science and technology, various radiation application activities such as neutron science, advanced photon science and synchrotron radiation science and application research of charged particles and radioisotopes have been promoted, which contribute to drastic advance in the fields of materials and life science etc. and to establishment of new industries. Along with these activities, basic and fundamental researches including advanced basic research, materials science research, nuclear environmental science research and advanced computational science and engineering are in progress. In addition, JAERI is devoted to the technology development in radioactive waste management and nuclear facility dismantling and also to international cooperation and training activities etc. in the peaceful use of nuclear energy. The research activities for FY 2002 are reviewed in this issue. (J.P.N.)

Sludge pasteurization and upgrading by radiation. Bilateral research cooperation between OAEP and JAERI

International Nuclear Information System (INIS)

1995-07-01

The research cooperation between office of Atomic Energy for Peace, Thailand (OAEP) and Japan Atomic Energy Research Institute (JAERI) on 'Sludge Pasteurization and Upgrading by Radiation' was carried out for 4 years starting from March 1990. This cooperation was performed through information exchange meetings (Steering Committee Meeting), held in Takasaki and Bangkok, and experiments and discussions by scientist exchange, Many useful results were obtained on radiation inactivation effect of pathogen and parasites, upgrading of irradiated sludges to fertilizer, animal feeds and biological pesticides. This report includes the main results of the research cooperation reported at the First to Fifth Steering Committee Meetings as the progress reports. (author)

Research and development for high temperature gas cooled reactor in Japan

International Nuclear Information System (INIS)

Taketani, K.

1978-01-01

The paper describes the current status of High Temperature Gas Cooled Reactor research and development work in Japan, with emphasis on the Experimental Very High Temperature Reactor (Exp. VHTR) to be built by Japan Atomic Energy Research Institute (JAERI) before the end of 1985. The necessity of construction of Exp. VHTR was explained from the points of Japanese energy problems and resources

Overview of HTGR heat utilization system development at JAERI

International Nuclear Information System (INIS)

Miyamoto, Y.; Shiozawa, S.; Ogawa, M.; Akino, N.; Shimizu, S.; Hada, K.; Inagaki, Y.; Onuki, K.; Takeda, T.; Nishihara, T.

1998-01-01

The Japan Atomic Energy Research Institute (JAERI) has conducted research and development of nuclear heat utilization systems of a High Temperature Gas cooled Reactor (HTGR), which are capable to meet a large amount of energy demand without significant CO 2 emission to relax the global warming issue. The High Temperature engineering Test Reactor (HTTR) with thermal output of 30 MW and outlet coolant temperature of 950 deg C, the first HTGR in Japan, is under construction on the JAERI site, and its first criticality is scheduled for mid-1998. After the reactor performance and safety demonstration tests for several years, a hydrogen production system will be connected to the HTTR. A demonstration program on hydrogen production started in January 1997, in JAERI, as a study consigned by the Science and Technology Agency. A hydrogen production system connected to the HTTR is designed to be able to produce hydrogen by steam reforming of natural gas, using nuclear heat of 10 MW from the HTTR. The safety principle and standard are investigated for the HTTR hydrogen production system. In order to confirm safety, controllability and performance of key components in the HTTR hydrogen production system, an out-of-pile test facility on the scale of approximately 1/30 of the HTTR hydrogen production system is installed. It is equipped with an electric heater as a heat source instead of the HTTR. The out-of-pile test will be performed for four years after 2001. The HTTR hydrogen production system will be demonstratively operated after 2005 at its earliest plan. Other basic studies on the hydrogen production system using thermochemical water splitting, an iodine sulphur (IS) process, and technology of distant heat transport with microencapsulated phase change material have been carried out for more effective and various uses of nuclear heat. (author)

Technical report on the Piping Reliability Proving Tests at the Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

1993-05-01

Japan Atomic Energy Research Institute (JAERI) conducts Piping Reliability Proving Tests from 1975 to 1992 based upon the contracts between JAERI and Science and Technology Agency of Japan (STA) under the auspices of the special account law for electric power development promotion. The purpose of these tests are to prove the structural reliability of the primary cooling piping constituting a part of the pressure boundary in the light water reactor power plants. The tests with large experimental facilities had ended already in 1990. Presently piping reliability analysis by the probabilistic fracture mechanics method is being done. Until now annual reports concerning the proving tests were produced and submitted to STA, whereas this report summarizes the test results done during these 16 years. Objectives of the piping reliability proving tests are to prove that the primary piping of the light water reactor (1) be reliable throughout the service period, (2) have no possibility of rupture, (3) bring no detrimental influence on the surrounding instrumentations or equipments near the break location even if it ruptured suddenly. To attain these objectives (i) pipe fatigue tests, (ii) unstable pipe fracture tests, (iii) pipe rupture tests and also the analyses by computer codes were done. After carrying out these tests, it is verified that the piping is reliable throughout the service period. The authors of this report are T. Isozaki, K. Shibata, S. Ueda, R. Kurihara, K. Onizawa and A. Kohsaka. The parts they wrote are shown in contents. (author)

Annual report of the Japan Atomic Energy Research Institute, Apr. 1987 - Mar. 1988

International Nuclear Information System (INIS)

1988-01-01

In fiscal 1987, the Atomic Energy Commission of Japan revised the 'Long term program for development and utilization of nuclear energy', which is done every five years. It determined the future direction of the research and development in JAERI. Three basic objectives are indicated in it, that is, to qualitatively upgrade nuclear technology, to tackle the frontiers of the technology, and to promote international collaboration. The new 'Long term task plan' of JAERI based on the 'Long term program' was established in August, 1987. The integral experiment on loss of coolant accident, the test on reactivity-initiated accident, the irradiation and post-irradiation examination of fuel, the development of safety analysis codes, the design and safety analysis of the Nuclear Fuel Cycle Safety Engineering Research Facility, the treatment and disposal of radioactive wastes, the preparatory work for constructing the High Temperature Engineering Test Reactor, the full scale plasma heating experiment with JT-60, the study on high efficiency confinement mode and current drive, the construction of the new home port for the nuclear ship 'Mutsu', the design of an advanced marine reactor, the reactor physics of FBRs and ATRs and other fundamental studies, and the operation of JRR-2, JRR-4 and JMTR are reported. (K.I.)

Handling of spent fuel from research reactors in Japan

International Nuclear Information System (INIS)

Kanda, K.

1997-01-01

In Japan eleven research reactors are in operation. After the 19th International Meeting on Reduced Enrichment for Research Reactors and Test Reactors (RERTR) on October 6-10, 1996, Seoul, Korea, the Five Agency Committee on Highly Enriched Uranium, which consists of Science and Technology Agency, the Ministry of Education, Science and Culture, the Ministry of Foreign Affairs, Japan Atomic Energy Research Institute (JAERI) and Kyoto University Research Reactor Institute (KURRI) met on November 7,1996, to discuss the handling of spent fuel from research reactors in Japan. Advantages and disadvantages to return spent fuel to the USA in comparison to Europe were discussed. So far, a number of spent fuel elements in JAERI and KURRI are to be returned to the US. The first shipment to the US is planned for 60 HEU elements from JMTR in 1997. The shipment from KURRI is planned to start in 1999. (author)

Intraoperative boron neutron capture therapy for malignant gliomas. First clinical results of Tsukuba phase I/II trial using JAERI mixed thermal-epithermal beam

International Nuclear Information System (INIS)

Matsumura, A.; Yamamoto, T.; Shibata, Y.

2000-01-01

Since October 1999, a clinical trial of intraoperative boron neutron capture therapy (IOBNCT) is in progress at JRR-4 (Japan Research Reactor-4) in Japan Atomic Energy Research Institute (JAERI) using mixed thermal-epithermal beam (thermal neutron beam I: TNB-I). Compared to pure thermal beam (thermal neutron beam II: TNB-II), TNB-I has an improved neutron delivery into the deep region than TNB-II. The clinical protocol and the preliminary results will be discussed. (author)

Cost benefit effect of application of radiation in JAERI

International Nuclear Information System (INIS)

Kazuaki Yanagisawa

2009-01-01

It is important for us to show accountability and transparency of nuclear funds invested to Japan Atomic Energy Research Institute (JAERI, now JAEA). We have not only to simply present the R and D outputs to tax payers by the bibliometric methods as measurable as possible but also to carry out a cost benefit analysis to show quantitatively the effect of economic representation which enables to make efficient allotment of resources. The task is heavy but unavoidable. In the present work, a cost benefit effect (CBE) of application of radiation known as one of big R and D project conducted in JAERI-Takasaki Branch is focused on. After defining CBE as Market Creation Effect (MCE) / Total amounts of investment, one tried to reveal the long-term CBE as long as 44 years. It is found that 31 research items, such as radial tires, cross-linking of wires, sterilization, and sterile of melon flies were succeeded to create markets in industrial and agricultural fields. Estimated MCE of those was totaled to 1,125 million dollars (M$). On the other hand, investment was 396 M$ for personnel (4,092 man/year) and 509 M$ for research costs. It totaled as 905 M$. Therefore, CBE for application of radiation in Takasaki Branch shall be 1,125/905=1.2. The mission dictated by the Long-Range Research Plan for Nuclear settled by the Atomic Energy Commission involves a lot of R and D tasks including partly the technical difficulties as well as partly the deep uncertainties for future prospects. JAERI is a national research institute and this figure may be regarded as reasonably acceptable because of many high risk and complex tasks were conducted successfully resulting in the creation of 31 new markets. It contributed to the increase of GDP. (Author)

Electron beam flue gas treatment. Research cooperation among JAERI, IAEA and INCT

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-10-01

The research co-operation is conducted among Japan Atomic Energy Research Institute (JAERI), International Atomic Energy Agency (IAEA) and Institute of Nuclear Chemistry and Technology in Poland (INCT) on Electron Beam Flue Gas Treatment from January 1993 to March 1997. The first phase of the cooperation was carried out for 3 years from January 1993 to March 1995. This cooperation was performed through information exchange meetings (Coordination Meetings), held in Takasaki and Warsaw, and experiments and discussions by exchange scientists. Many useful results were obtained on electron beam treatment of flue gas from coal-combustion heat generation plant in Kaweczyn within the frame work of the research co-operation. This report includes the main results of the tripartite research cooperation. (author)

Burnup credit implementation plan and preparation work at JAERI

International Nuclear Information System (INIS)

Nomura, Y.; Itahara, K.

2001-01-01

Application of the burnup credit concept is considered to be very effective to the design of spent fuel transport and storage facilities. This technology is all the more important when considering construction of the intermediate spent fuel storage facility, which is to be commissioned by 2010 due to increasing amount of accumulated spent fuel in Japan. Until reprocessing and recycling all the spent fuel arising, they will be stored as an energy stockpile until such time as they can be reprocessed. On the other hand, the burnup credit has been partly taken into account for the spent fuel management at Rokkasho Reprocessing Plant, which is to be commissioned in 2005. They have just finished the calibration tests for their burnup monitor with initially accepted several spent fuel assemblies. Because this monitoring system is employed with highly conservative safety margin, it is considered necessary to develop the more rational and simplified method to confirm burnup of spent fuel. A research program has been instituted to improve the present method employed at the spent fuel management system for the Spent Fuel Receiving and Storage Pool of Rokkasho Reprocessing Plant. This program is jointly performed by Japan Nuclear Fuel Limited (JNFL) and JAERI.This presentation describes the current status of spent fuel accumulation discharged from PWR and BWR in Japan and the recent incentive to introduce burnup credit into design of spent fuel storage and transport facilities. This also includes the content of the joint research program initiated by JNFL and JAERI. The relevant study has been continued at JAERI. The results by these research programs will be included in the Burnup Credit Guide Original Version compiled by JAERI. (author)

A review of fast reactor programme in Japan

International Nuclear Information System (INIS)

1998-01-01

This report describes the development and activities on fast reactor in Japan for the period of April 1996 - March 1997. During this period, the 30th duty cycle operation has been started in the Experimental Fast Reactor ''''Joyo''''. The cause investigation on the sodium leak incident has completed and the safety examination are being performed in the Prototype Fast Breeder Reactor ''''Monju''''. The three years design study since FY1994 on the plant optimization of the Demonstration FBR has been completed by the Japan Atomic Power Company (JAPC). Related research and development works are underway at several organizations under the discussion and coordination of the Japanese FBR R and D Steering Committee, which is composed of Power Reactor and Nuclear Fuel Development Corporation (PNC), JAPC, Japan Atomic Energy Research Institute (JAERI) and Central Research Institute of Electric Power Industry (CRIEPI). In November 1996, the Japan Atomic Energy Commission (JAEC) established a Social Gathering Meeting to discuss generally the significance of FBR development in Japan for the future. (author)

Recent research and development activities on partitioning and transmutation of radioactive nuclides in Japan

International Nuclear Information System (INIS)

Minato, K.; Ikegami, T.; Inoue, T.

2005-01-01

In Japan, research and development activities for partitioning and transmutation (P and T) have been promoted under the OMEGA programme for more than 15 years. These activities were reviewed by the Atomic Energy Commission in Japan in 2000. In accordance with the results of the review, three institutes, the Japan Atomic Energy Research Institute (JAERI), the Japan Nuclear Cycle Development Institute (JNC) and the Central Research Institute of Electric Power Industry (CRIEPI), are continuing the research and development on the P and T technology. This report summarises the recent activities in Japan by these institutes. JAERI is engaging in the research and development on the Double-strata Fuel Cycle concept consisting of the partitioning process of the high-level waste and the dedicated transmutation cycle using the accelerator driven system (ADS) fuelled with the minor actinide (MA) nitride fuel. JNC and CRIEPI are engaging in the research and development on the P and T technology using commercialized fast reactors (FR), where JNC is mainly in charge of the MOX fuel and the aqueous reprocessing, while CRIEPI is mainly in charge of the metallic fuel and the dry reprocessing. The research and development activities on FR are organised under the Feasibility Study on Commercialized Fast Reactor Cycle Systems. (authors)

Status of fusion reactor concept development in Japan

International Nuclear Information System (INIS)

Tsuji-Iio, Shunji

1996-01-01

Fusion power reactor studies in Japan based on magnetic confinement schemes are reviewed. As D-T fusion reactors, a steady-state tokamak reactor (SSTR) was proposed and extensively studied at the Japan Atomic Energy Research Institute (JAERI) and an inductively operated day-long tokamak reactor (IDLT) was proposed by a group at the University of Tokyo. The concept of a drastically easy maintenance (DREAM) tokamak reactor is being developed at JAERI. A high-field tokamak reactor with force-balanced coils as a volumetric neutron source is being studied by our group at Tokyo Institute of Technology. The conceptual design of a force-free helical reactor (FFHR) is under way at the National Institute for Fusion Science. A design study of a D- 3 He field-reversed configuration (FRC) fusion reactor called ARTEMIS was conducted by the FRC fusion working group of research committee of lunar base an lunar resources. (author)

Implementation of the Additional Protocol in Japan

International Nuclear Information System (INIS)

Ogawa, T.

2001-01-01

The Additional Protocol between Japan and the IAEA entered into force in December 1999. To come into force a series of implementation trials of Additional Protocol was carried out at two Japanese representative nuclear research centers, i.e. Tokai Research Establishment of Japan Atomic Energy Research Institute (JAERI) and Oarai Engineering Center of Japan Nuclear Fuel Cycle Development Institute (JNC). These trials were proposed by Japan and were conducted in cooperation with the IAEA Secretariat. In addition, Japan amended 'the Law for the Regulation of Reactors etc.', to collect adequate information to submit to the IAEA, to arrange the surrounding for the complementary access, etc. In addition, Japan Submitted the Initial Declaration of the Additional Protocol within 180 days of the entry into force of the Protocol, in the middle of June, 2000

Current studies on the decommissioning materials recycling at Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Fujiki, K.; Nakamura, H.

1993-01-01

Rational treatment of a large volume of solid wastes resulting from the reactor dismantling is a key to success to carry out the decommissioning smoothly. From this viewpoint, the Japan Atomic Energy Research Institute (JAERI) has been conducting development of the recycling technology for metal waste and an investigation study on the rational recycling system for the dismantling wastes recycling. With respect to the development of the recycling technology, series of melting tests using non-contaminated metals, metal waste dismantled from JPDR or imitated waste using radioisotopes have been conducted. The basic characteristics of the radionuclides transport behavior during the melting have been understood. In the investigation study on the rational recycling system, a scenario of recycling the wastes was developed based on the amount of waste arising from decommissioning nuclear power plants, and necessary processing facilities were examined, and safety and economy of the process were evaluated

Status report of shielding investigation in Japan

International Nuclear Information System (INIS)

Shindo, M.

1964-01-01

The Japan Atomic Energy Research Institute (JAERI) was established in 1954, and immediately proceeded with the construction of a research reactor. The first symposium in Japan on nuclear energy was held in 1957. Most of the papers presented in the field of reactor shielding were limited to shielding materials and their fabrication. In the first stage of our investigations, our efforts were devoted to practical design studies of reactor shielding. As a result of these studies, it was found that the formulae at hand for calculations were inadequate, but at that time no electronic computer was available in Japan nor were theoretical calculations very actively undertaken. Problems on nuclear ship shielding had been investigated at the Ship Research Institute, since 1956 and many fruitful results had been obtained. About that time the Japan Atomic Industry Forum started activities and took the initiative in organizing shielding research. Research workers in the shipbuilding industry in particular have been seriously studying shielding problems. Few years after the first symposium, problems concerning more fundamental studies were treated by many research workers. Shielding experiments using radioisotopes were carried out and many fruitful results were obtained. They are described in the this paper. Medium size electronic computers became available in Japan, permitting a theoretical study group to make an active contribution. They produced some codes, and their results are also described in the following sections. This constituted the second stage of our investigations. A swimming-pool reactor, JRR-4 (Japan Research Reactor-4), has been under construction at JAERI since 1962 and will become critical in autumn 1964. After characteristic tests it will be a very powerful tool for the shielding investigations. This id the beginning of the third stage of investigations

Research and development of radiation utilizations in 1981 at JAERI

International Nuclear Information System (INIS)

1981-01-01

There is the field of radiation utilization such as the application of the effect of radiation on matters and the techniques of measurement and analysis utilizing the properties of radiation, in addition to the use of atomic energy as heat or electric power. The fields of application of radiation utilization are very wide, and are closely related to the health and daily life of people. The Japan Atomic Energy Research Institute has performed the research and development on radiation utilization regarding radiochemistry, the application of irradiation, and the production and industrial utilization of radioisotopes. Also, the research of the radiation resistance of organic materials used for nuclear facilities, the development of organic materials, and the production of tritium have become necessary. In this booklet, the recent results of radiation utilization in the JAERI are summarized. The research and development of ion exchange membranes, organic glasses, the fixation of living body activators and water paints, the techniques of utilizing irradiation, the techniques of radioisotope productions and utilization, and the techniques related to the development of atomic energy are reported. (Kako, I.)

Present status of decommissioning materials reuse research at JAERI

International Nuclear Information System (INIS)

Fujiki, Kazuo; Nakamura, Hisashi; Kanazawa, Katsuo

1991-01-01

Rational treatment and disposal of a large volume of the dismantling wastes resulting from the reactor dismantling are the key to success to carry out the decommissioning smoothly. From this viewpoint, the Japan Atomic Energy Research Institute (JAERI) has been conducting development of the recycling technology for metal waste and a investigation study on the rational recycling system for the dismantling wastes recycling. With respect to the development of the recycling technology, melting tests using non-contaminated metals have been conducted and the basic characteristics of experimental facility and material balances understood. In the investigation study on the rational recycling system, review and discussion were made on the amount of waste arising from decommissioning a nuclear power plant, a scenario of recycling the wastes, and the necessary processing facilities. (author)

Present Status of HTGR Utilization System Development in Japan

International Nuclear Information System (INIS)

Miyamoto, Yoshiaki

2000-01-01

Efforts are to be continuously devoted to establish and upgrade HTGR technology in the world. Japan Atomic Energy Research Institute (JAERI) has conducted the R and D of HTGRs since the 1960's in Japan, focusing on mainly the construction of High Temperature engineering Test Reactor (HTTR) which is an HTGR with a maximum helium gas temperature of 950 o C at the reactor outlet and HTGR utilization systems. The HTTR achieved first criticality on November 10, 1998 and will restart from January in 2001. In the R and D program of HTGR utilization systems, JAERI has conducted hydrogen production systems with HTGR to demonstrate the applicability of nuclear heat for extensive energy demands besides the electric power generation. JAERI has developed a hydrogen production system by steam reforming process of natural gas using nuclear heat supplied from the HTTR. Prior to the demonstration test of HTTR hydrogen production system, a 1/30-scale out-of-pile test facility is under construction for safety review and detailed design of the system. The out-of-pile test facility will be started in 2001 and will be continued about 4 years. The hydrogen permeation and corrosion tests have been carried out since 1997. Check and review for the demonstration program in the HTTR hydrogen production system will be made in 2001. Then the HTTR hydrogen production system is scheduled to be constructed from 2003 and demonstratively operated from around 2006. In parallel with the R and D of the HTTR hydrogen production system, hydrogen production method by thermochemical water splitting, so-called IS process, has been studied in JAERI. The IS process is placed as one of future candidates of the heat utilization systems of the HTTR following the steam reforming system. Continuous and stoichiometric production of hydrogen and oxygen for 48 hours was successfully achieved with a laboratory-scale apparatus mainly made of glass. Following this achievement, the study has been continued with a larger

Long-term nuclear knowledge management (NKM) of innovative nuclear energy systems (INES). A case study of the Japan Atomic Energy Research Institute (JAERI)

International Nuclear Information System (INIS)

Yanagisawa, Kazuaki; Bezdek, Roger H.; Sawada, Tetsuo

2008-01-01

Within JAERI, funds invested in a 45-year study of LWR totaled 4.2b$ for research and 3.4b$ (34,718 man years) for personnel. The benefits to taxpayers from this JAERI work were estimated to be about 6.3b$ , resulting in a favorable cost-benefit ratio of 1.5 (6.3/4.2). JAERI is a national research institute and this figure may be regarded as sufficiently high, and many high risk and complex tasks were completed successfully. Funds invested in the 32-year study of HTGR were 1.5b$ for R and D and 0.3b$ (2966 man years) for personnel. Commercialized HTGR will result in a cost reduction of electricity during power generation. Retail cost is 0.36b$/year and the share of JAERI (MCP) is 0.018b$/year. Funds invested in the 32-year study of FR were 5.4b$ for R and D and 0.6b$ (6331 man years) for personnel. Estimate is that after commercialization in 2050, a FR will generate revenue from electricity as high as 1687b$ during the period 2050-2100, or 34b$/year - which is greater than that of LWR. However, there is substantial uncertainty in these estimates. To achieve long-term INES, it is necessary to develop the sustainable scenarios and the long-term robust NKM, as shown in the present study. (author)

Development of authentication system for the fast critical assembly (FCA) portal monitor (P/M) and penetration monitor (PN/M) systems of JAERI

International Nuclear Information System (INIS)

Ogawa, Hironobu; Mukaiyama, Takehiko

1999-05-01

The advanced comprehensive containment and surveillance system for the Fast Critical Assembly facility (FCA) of the Japan Atomic Energy Research Institute (JAERI) consists of a Portal monitor (P/M) and a Penetration Monitor (PN/M) systems. The development of these systems was completed in 1988 for alleviating the burdens of manpower and radiation problems in the frequent NDA inspections. After the completion of the field trial test (Phase III), in 1990, the International Atomic Energy Agency (IAEA) accepted the system on condition that an independent IAEA authentication equipment would be provided. The development of the authentication measures was carried out jointly by both the Japan Support Programme for Agency Safeguards (JASPAS) and the U.S. Program of Technical Assistance to IAEA Safeguards (POTAS), and also under the research agreement for the safeguards research and development between JAERI and the US Department of Energy (USDOE). The concept and design requirements of the authentication system were developed by IAEA, but the design and development of the authentication equipment were jointly funded both by JASPAS and POTAS, and also the fund of JAERI was provided for the Sandia National Laboratories (SNL) through USDOE. SNL developed and constructed the authentication system in two phase as Phase I and Phase II. JAERI financed the development of the Phase I and Phase II hardware and software, and the installation of the authentication equipment at the FCA facility, and also carried out the modification of the circuitry and devices for both the P/M and the PN/M systems as well as the reconstruction of the PN/M Junction Unit for compatibility with the implementation of the authentication measures. After the completion of consecutive field trial test of the P/M, the PN/M and the authentication system, IAEA accepted the entire system as an effective and efficient routine inspection measures in 1996. This report describes the modification and reconstruction of

Ultralow temperature helium compressor for Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Asakura, Hiroshi

1988-01-01

Ishikawajima Harima Heavy Industries Co., Ltd. started the development of an ultralow temperature helium compressor for helium liquefaction in 1984 jointly with Japan Atomic Energy Research Institute, and has delivered the first practical machine to the Superconductive Magnet Laboratory of JAERI. For a large superconductive magnet to be used in the stable state for a fusion reactor, conventional superconductive materials (NbTi, NbTi 3 Sn, etc.) must be used, being cooled forcibly with supercritical helium. The supercritical helium which is compressed above the critical pressure of 228 kPa has a stable cooling effect since the thermal conductivity does not change due to the evaporation of liquid helium. In order to maintain the temperature of the supercritical helium below 4 K before it enters a magnet, a heat exchanger is used. The compressor that IHI has developed has the ability to reduce the vapor pressure of liquid helium from atmospheric pressure to 50.7 kPa, and can attain the temperature of 3.5 K. The specification of this single stage centrifugal compressor is: mass flow rate 25 - 64 g/s, speed 80,000 rpm, adiabatic efficiency 62 - 69 %. The structure and the performance are reported. (K.I.)

Options for a next generation neutron source for neutron scattering based on the projected linac facility at JAERI

International Nuclear Information System (INIS)

Mezei, F.; Watanabe, Noboru; Niimura, Nobuo; Morii, Yukio; Aizawa, Kazuya; Suzuki, Jun-ichi.

1997-03-01

Japan Atomic Energy Research Institute (JAERI) has a project to construct a high intensity proton accelerator to promote wide basic science using neutrons and nuclear power technologies such as radioactive nuclide transmutation. One of the most important field for utilization of neutron beam is neutron scattering. The energy and the averaged current obtained by the proton accelerator are 1.5 GeV and 4-5.3 mA, respectively and these provide 6-8 MW power. The repetition frequency is 50-60 Hz. Evaluation of options for the use of accelerators for neutron production for neutron scattering research and investigation of the neutron research opportunities offered by sharing the superconducting linac planned at JAERI were discussed. There are two ways of the utilization of proton beams for neutron scattering experiment. One is for long pulse spallation source (LPSS) and the other is for short pulse spallation source (SPSS). Quantitative evaluation of instrument performance with LPSS and SPSS was examined in the intensive discussion, calculations, workshop on this topics with Prof. F. Mezei who stayed at JAERI from October 24 to November 6, 1996. A report of the collaborative workshop will be also published separately. (author)

JAERI 20 MV tandem accelerator

International Nuclear Information System (INIS)

Tsukada, Kineo; Harada, Kichinosuke

1977-01-01

Accelerators have been developed as the experimental apparatuses for the studies on nuclei and elementary particles. One direction of the development is the acceleration of protons and electrons to more and more high energy, and another direction is the acceleration of heavy ions up to uranium to several MeV up to several hundreds MeV. However recently, accelerators are used as the useful tools for the studies in wider fields. There are electrostatic acceleration and high frequency acceleration in ion acceleration, and at present, super-large accelerators are high frequency acceleration type. In Japan Atomic Energy Research Institute, it was decided in 1975 to construct an electrostatic accelerator of tandem type in order to accelerate heavy ions. In case of the electrostatic acceleration, the construction is relatively simple, the acceleration of heavy ions is easy, the property of the ion beam is very good, and the energy is stable. Especially, the tandem type is convenient for obtaining high energy. The tandem accelerator of 20 MV terminal voltage was ordered from the National Electrostatics Corp., USA, and is expected to be completed in 1978. The significance of heavy ion acceleration in the development and research of atomic energy, tandem van de Graaff accelerators, the JAERI 20MV tandem accelerator, and the research project with this accelerator are described. (Kako, I.)

Outline of application plans of accelerator beams in JAERI

Energy Technology Data Exchange (ETDEWEB)

Suzuki, Yasuo [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1997-03-01

Japan Atomic Energy Research Institute (JAERI) has various application plans of accelerators such as; Neutron Science Research Complex (NSRC), Positron Factory, International Fusion Material Irradiation Facility (IFMIF), and Spring-8 Project. Each application plan has its own research program and its own core accelerator. The NSRC is a multi-purpose research complex composed of seven research facilities: slow neutron scattering facility for material science, the nuclear energy research facility like nuclear transmutation and so on. The Positron Factory will be applied to the research of precise analysis of material structure by novel method of positron probing. The IFMIF aims at simulating the wall loading of a demo fusion reactor by producing high intense neutron flux. The SPring-8 is the largest synchrotron radiation source in the world. More than 60 X-ray beam lines will be equipped for the various researches. (author)

Japan and atomic co-operation

International Nuclear Information System (INIS)

1965-01-01

Japan, which is host country for the Ninth Regular Session of the Agency General Conference, has an important programme of nuclear power development to meet future needs. In addition, Japan is active in other applications of atomic energy and is building up a domestic nuclear engineering industry. Japan has profited by the Agency as a channel of international cooperation, and was a party to the first bilateral agreement in which the responsibility for administering safeguards against the diversion of materials to military purposes, was transferred to the Agency. Japan has also lent support to Agency programmes by gifts, training courses, research, and the loan of experts. In 1961, the Japan Atomic Energy Commission (AEC) formulated the 'Long-Range Programme for Development and Utilization of Atomic Energy', on the basis of the economic prospects of nuclear power generation, and the conditions necessary to meet the ever-increasing domestic energy demands. According to this programme, in the light of power reactor development trends overseas, it is expected that nuclear power costs will compete with those of oil burning stations by 1970. On this basis, total nuclear power generating capacity of 1000 MW(e) will be attained by 1970, and 7000 - 9 500M(e) by 1980. As a prelude to the above programme the Japan Atomic Power Company (JAPCO) began construction in 1959 of a graphite-moderated gas-cooled nuclear power station (Improved Calder Hall type) of 165 MW(e) gross capacity. This is now progressing smoothly, and reached criticality in May 1965; it is expected to supply commercial power by the end of this year. The second nuclear power station will be built by the same company on the coast of the Japan Sea, with a light water-moderated reactor of 250 - 300 MW(e) capacity. The construction plan i s currently being pushed forward for completion in 1970. Thereafter three private utility companies - Tokyo, Kansai and Chubu Electric Companies - are doing preparatory work for

Overview of current research and development programmes for fuel in Japan

International Nuclear Information System (INIS)

Shiozawa, S.

1991-01-01

The Research and Development (R and D) programmes for HTGR fuel have been performed since 1969 by Japan Atomic Energy Research Institute (JAERI) as a leading organization in Japan. The R and D covers all fields necessary for the construction of the High Temperature Engineering Test Reactor (HTTR), which is the first HTGR in Japan. This R and D includes fuel fabrication, fuel property data, irradiation performance under normal operating conditions, safety-related research and fuel inspection technology. The R and D for the HTTR has been completed from a licensing point of view. Some R and D including future advanced fuel development continue. 2 figs, 3 tabs

Investigation of environmental radioactivity in waste dumping areas of the far eastern seas. JAERI`s activities in the 1st Japanese-Korean-Russian joint expedition 1994

Energy Technology Data Exchange (ETDEWEB)

Amano, Hikaru; Matsunaga, Takeshi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Yabuuchi, Noriaki

1996-10-01

Large quantities of radioactive waste have been dumped in the Far Eastern Sea by the former USSR and Russia. In order to survey marine radioactive contamination in the Far Eastern Sea, the first Japanese-Korean-Russian joint expedition was conducted according to the governmental agreement. The joint expedition was conducted at the areas of the Russian radioactive waste dumping site from March 18 1994 to April 6, 1994. JAERI participated in this expedition according to the request from STA Japan, and conducted mainly on-board measurement of marine radioactivities. The results showed that the radionuclides concentrations in seawater and seabed sediment samples from the study site were not different from those in the western North Pacific. This report summarises JAERI`s activities in the expedition. Final report by Japanese-Korean-Russian government and IAEA is annexed. (author)

Status of the HTTR project in Japan

International Nuclear Information System (INIS)

Sanokawa, K.

1989-01-01

In June 1987, the Japanese Atomic Energy Commission issued the revision of the Long-Term Program for Development and Utilization of Nuclear Energy, recommending that Japan should proceed with the development of more advanced new technologies for the future, parallel to the existing nuclear systems. It also emphasizes that the HTGR is one of the most promising reactors with high efficiency and inherent safety, therefore it should be explored for the broader use of nuclear energy, not only for power production. Then the early construction of a High-Temperature engineering Test Reactor (HTTR) by JAERI was proposed. Based on this program, JAERI has changed the ''VHTR program'' for ''HTTR program'' to establish the HTGR technology basis and upgrade them. The permission of the HTTR construction was made by the Science and Technology Agency (STA) in February 1989. 3 figs, 2 tabs

JAERI tandem-accelerator and tandem-booster

Energy Technology Data Exchange (ETDEWEB)

Yoshida, Tadashi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1998-03-01

In 1982, aiming at the new development of atomic energy research, the tandem accelerator of Japan Atomic Energy Research Institute (JAERI) was installed. In fiscal year 1993, the superconducting boosters which can increase the ion energy by up to 4 times were added, and the research in the region below 1000 MeV became possible. Those are electrostatic type accelerators which are easy to be used especially in basic research field, and are useful for future research. The tandem accelerator has been operated while maintaining the first class performance as the accelerator for various kinds of heavy ion beam. It has the special shape among electrostatic type accelerators, and is excellent in the easiness of control and stability. The main particulars of the tandem accelerator are shown. As for the ion sources of the tandem accelerator, three cesium sputter type ion sources are installed on two high voltage stands. The kinds of the ions which can be accelerated are mainly negative ions. As the improvement, electron cyclotron resonance (ECR) ion sources are expected to be adopted. As for the tandem boosters, the 1/4 wavelength type resonance hollow cylinder was adopted. The constitution of the tandem boosters is explained. The way of utilizing the tandem accelerator system and the aim for hereafter are reported. (K.I.)

General activities of JAERI nuclear data center and Japanese nuclear data committee

International Nuclear Information System (INIS)

Fukahori, Tokio

1999-01-01

The nuclear data center of Japan Atomic Energy Research Institute (JAERI/NDC) is playing the role of Japanese domestic nuclear data center and gateway to foreign data centers. As the domestic nuclear data center, activities of JAERI/NDC are 1) compiling the Japanese Evaluated Nuclear Data Library (JENDL) for both general and special purposes, 2) importing and exporting nuclear data, 3) nuclear data services for the domestic users, and 4) organizing japanese Nuclear Data Committee (JNDC) as a secretariat. Compiled JENDL General Purpose Files up to now are JENDL-1, 2, 3, 3.1 and 3.2. The data for 340 nuclei in the energy range from 10 -5 eV to 20 MeV are available in JENDL-3.2. JENDL Special Purpose Files were also prepared in order to meet the requests from the specified application fields. JNDC has about 140 members. JNDC consists of Main Committee, Steering Committee, Subcommittee on Nuclear Data, Subcommittee on Reactor Constants, Subcommittee on Nuclear Fuel Cycle and Standing Groups. Above subcommittees are performing essential evaluation for the files described above, checking the JENDL files through the benchmark and integral testing as well as considering the standard group constant, and considering about evaluation of decay heat and nuclide generation/depletion and fission product yields. (author)

JAERI thermal reactor standard code system for reactor design and analysis SRAC

International Nuclear Information System (INIS)

Tsuchihashi, Keichiro

1985-01-01

SRAC, JAERI thermal reactor standard code system for reactor design and analysis, developed in Japan Atomic Energy Research Institute, is for all types of thermal neutron nuclear design and analysis. The code system has undergone extensive verifications to confirm its functions, and has been used in core modification of the research reactor, detailed design of the multi-purpose high temperature gas reactor and analysis of the experiment with a critical assembly. In nuclear calculation with the code system, multi-group lattice calculation is first made with the libraries. Then, with the resultant homogeneous equivalent group constants, reactor core calculation is made. Described are the following: purpose and development of the code system, functions of the SRAC system, bench mark tests and usage state and future development. (Mori, K.)

Waste inventory, waste characteristics and waste repositories in Japan

International Nuclear Information System (INIS)

Shimooka, K.

1997-01-01

There are two types of repositories for the low level radioactive wastes in Japan. One is a trench type repository only for concrete debris generated from the dismantling of the research reactor. According to the safety assurance system, Japan Atomic Energy Research Institute (JAERI) has disposed of the concrete debris arose from the dismantling of the Japan Power Demonstration Reactor (JPDR). The other type is the concreted pit with engineered barriers. Rokkasho Low Level Radioactive Waste Disposal Center has this type of repository mainly for the power plant wastes. Japan Nuclear Fuel Ltd. (JNFL) established by electric power companies is the operator of the LLW disposal project. JNFL began the storage operation in 1992 and buried approximately 60,000 drums there. Two hundred thousand drums of uniformly solidified, waste may be buried ultimately. 4 refs, 3 tabs

A review of research and development on accelerator-driven system for transmutation of long-lived nuclear waste at JAERI

International Nuclear Information System (INIS)

Oigawa, H.

2004-01-01

The dedicated transmutation system using the accelerator driven subcritical system (ADS) has been studied in the Japan Atomic Energy Research Institute (JAERI) to reduce the burden of the final disposal of the nuclear waste. A subcritical reactor with the thermal power of 800 MW is proposed, where 250 kg of minor actinide (MA) can be transmuted annually. A superconducting linear accelerator (LINAC) with the beam power of 20-30 MW is necessary for this ADS. Lead-bismuth eutectic (LBE) is used for both the spallation target and the core coolant. Many research and development activities including the design study are under way and planned at JAERI to examine the feasibility of the ADS. In the design study, optimization of the ADS design is under way in terms of neutronics and structural feasibility. In the field of the proton accelerator, a superconducting LINAC is being developed. In the field of the LBE technology, material compatibility, thermal-hydraulics and polonium behavior are being studied. The irradiation effect of structural material to be used for the beam window is also being studied. In the field of the reactor physics of the subcritical core fueled with MA, the reliability of nuclear data is examined and the subcriticality monitoring technique is being investigated. Moreover, in the framework of J-PARC project (Japan Proton Accelerator Research Complex), JAERI plans to construct the Transmutation Experimental Facility (TEF) to demonstrate the feasibility of the ADS with using high-energy proton beam, to accumulate valuable knowledge about reactor physics and operation of ADS, and to establish a database for LBE spallation target and relevant materials. (author)

Cylindrical core reflood test facility (CCTF) and slab core reflood test facility (SCTF) for Japan Atomic Energy Research Institute (JAERI)

International Nuclear Information System (INIS)

1981-01-01

IHI has designed and constructed the CCTF at JAERI to be used in the safety analysis research on the loss of coolant accident in a PWR plant. This test facility is planned so that reflood phenomenon in the PWR plant (a phenomenon is that the bared and overheated core is reflooded by the emergency core cooling system when the coolant loss accident occurred) is simulated under various test conditions. The CCTF is the largest-scale test plant in the world, composed of approximately 2000 simulated fuel rods (electric heaters), 1 simulated pressure vessel, 4 primary cooling loops, 2 simulated steam generators, emergency core cooling system, and so on. The test conditions are controlled, and the test steps are sequentially progressed by the computing system, and test data are collected by the data acquisition system. Furthermore, IHI is now designing and constructing the SCTF in accordance with the JAERI research plan. The SCTF is similar to the CCTF in scale. Main feature of the SCTF is the form of the simulated core and the simulated pressure vessel, which is of slab construction to be representative of the radial section of the PWR reactor. Reliable and various data for safety analysis are expected by the CCTF and the SCTF. (author)

Research activities at JAERI on core material behaviour under severe accident conditions

International Nuclear Information System (INIS)

Uetsuka, H.; Katanashi, S.; Ishijima, K.

1996-01-01

At the Japan Atomic Energy Research Institute (JAERI), experimental studies on physical phenomena under the condition of a severe accident have been conducted. This paper presents the progress of the experimental studies on fuel and core materials behaviour such as the thermal shock fracture of fuel cladding due to quenching, the chemical interaction of core materials at high temperatures and the examination of TMI-2 debris. The mechanical behaviour of fuel rod with heavily embrittled cladding tube due to the thermal shock during delayed reflooding have been investigated at the Nuclear Safety Research Reactor (NSSR) of JAERI. A test fuel rod was heated in steam atmosphere by both electric and nuclear heating using the NSSR, then the rod was quenched by reflooding at the test section. Melting of core component materials having relatively low melting points and their eutectic reaction with other materials significantly influence on the degradation and melt down of fuel bundles during severe accidents. Therefore basic information on the reaction of core materials is necessary to understand and analyze the progress of core melting and relocation. Chemical interactions have been widely investigated at high temperatures for various binary systems of core component materials including absorber materials such as Zircaloy/Inconel, Zircaloy/stainless steel, Zircaloy/(Ag-In-Cd), stainless steel B 4 C and Zircaloy/B 4 C. It was found that the reaction generally obeyed a parabolic rate law and the reaction rate was determined for each reaction system. Many debris samples obtained from the degraded core of TMI-2 were transported to JAERI for numerous examinations and analyses. The microstructural examination revealed that the most part of debris was ceramic and it was not homogeneous in a microscopic sense. The thermal diffusivity data was also obtained for the temperature range up to about 1800K. The data from the large scale integral experiments were also obtained through the

Status of fusion technology development in JAERI stressing steady-state operation for future reactors

International Nuclear Information System (INIS)

Matsuda, Shinzaburo

2000-01-01

This paper reports on the progress of the fusion reactor technologies developed at the Japan Atomic Energy Research Institute (JAERI) and expected to lead to a future steady state operation reactor. In particular, superconducting coil technology for plasma confinement, NBI and RF systems technology for plasma control and current drive, fueling and pumping systems technology for particle control, heat removal technology, and development of long life materials are highlighted as the important key elements for the future steady state operation. It will be discussed how these key technologies have already been developed by the ITER (International Thermonuclear Experimental Reactor) technology R and D as well as by the Japanese domestic program, and which technologies are planned for the near future

The Advisory Committee of International Nuclear Information System (INIS) for Japan

International Nuclear Information System (INIS)

Kunii, Katsuhiko; Itabashi, Keizo

2016-10-01

Under the International Atomic Energy Agency (IAEA), the International Nuclear Information System (INIS) Programme commenced in 1970 and ever since INIS has been acting as a database system available worldwide through information networks each time providing bibliographic information then full text documents of literature, technical reports, etc. on peaceful use of nuclear science and technology, thoroughly supported and maintained by INIS Secretariat in Vienna, on the other hand the inputs for INIS are provided by Member States and Organizations in their own boundaries. As for the INIS activity in Japan, while, the Japan Atomic Energy Research Institute (JAERI), then succeeded as the Japan Atomic Energy Agency (JAEA) as of today, the both have been responsible with the INIS activity in Japan as the INIS National Centre for Japan based on the request of the “former” Science and Technology Agency of the Japanese Government, an advisory committee had have a very important role for the INIS activity in Japan by enthusiastically advising the whole related to the activity from advanced and comprehensive viewpoints of expertise. This report describes about it, the Advisory Committee of International Nuclear Information System (INIS) for Japan, successfully been held 34 times from Oct. 1970 to Mar. 2005. Included are the history and its records, change of the member and topics of the Advisory Committee, and the minutes. (author)

Measurement of thermal neutron spectra using LINAC in Japan Atomic Energy Research Institute (JAERI)

International Nuclear Information System (INIS)

Akino, Fujiyoshi

1982-01-01

The exact grasp of thermal neutron spectra in a core region is very important for obtaining accurate thermal neutron group constants in the calculation for the nuclear design of a reactor core. For the accurate grasp of thermal neutron spectra, the capability of thermal neutron spectra to describe the moderator cross-sections for thermal neutron scattering is a key factor. Accordingly, 0 deg angular thermal neutron spectra were measured by the time of flight (TOF) method using the JAERI LINAC as a pulsed neutron source, for light water system added with Cd and In, high temperature graphite system added with boron, and light water-natural uranium heterogeneous multiplication system among the reactor moderators of light water or graphite systems. First, the equations to give the time of flight and neutron flux by TOF method were analyzed, and several corrections were investigated, such as those for detector efficiency, background, the transmission coefficient of air and the Al window of a flight tube, mean emission time of neutrons, and the distortion effect of re-entrant hole on thermal neutron spectra. Then, the experimental system, results and calculation were reported for the experiments on the above three moderator systems. Finally, the measurement of fast neutron spectra in natural uranium system and that of the efficiency of a 6 Li glass scintillator detector are described. (Wakatsuki, Y.)

Proceeding of the workshop on the results of the cooperative research between JAERI and CHESCIR concerning the study on assessment and analysis of environmental radiological consequences and verification of an assessment system

Energy Technology Data Exchange (ETDEWEB)

Amano, Hikaru; Saito, Kimiaki (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2001-03-01

This workshop was organized and sponsored by the Japan Atomic Energy Research Institute (JAERI) and Chernobyl Science and Technology Center for International Research (CHESCIR). JAERI and CHESCIR have conducted 8 years research cooperation from 1992 to 1999 concerning the study on assessment and analysis of environmental radiological consequences and verification of an assessment system, focusing on the Chernobyl contaminated area. It contained 3 research subjects. Subject-1 initiated at 1992 and focused the study on measurements and evaluation of environmental external exposure after nuclear accident. Subject-2 initiated at 1992 and focused the study on the validation of assessment models in an environmental consequence assessment methodology for nuclear accidents. Subject-3 initiated at 1995 and focused on the study on migration of radionuclides released into terrestrial and aquatic environment after nuclear accidents. This workshop was held to summarize the research cooperation between JAERI and CHESCIR, and to discuss future research needs in this field. (author)

Proceedings of the 7th symposium on JAERI's Reimei Research Program

International Nuclear Information System (INIS)

Shibata, Takemasa

2004-02-01

The Reimei (Dawn) Research Program is a research project based on public application to be conducted within the framework of the Reimei Research Promotion Project of Japan Atomic Energy Research Institute. The objective of the system is to encourage often vague or unique ideas in the field of fundamental nuclear science and nuclear energy. The symposium on JAERI's Reimei Research Program carried out at the 2002 fiscal year was held at Tokai Research Establishment on 1st and 2nd of July 2003. Each report of 51 papers was carried out by short presentation and poster, and the active discussion was carried out by about 120 attendees. Those presented papers are compiled in the proceedings. We hope that many new researches grow and develop by the help of Reimei Research Promotion Project. The 36 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the 8th symposium on JAERI's Reimei research program

International Nuclear Information System (INIS)

Shibata, Takemasa

2004-12-01

The Reimei (Dawn) Research Program is a research project based on public application to be conducted within the framework of the Reimei Research Promotion Project of the Japan Atomic Energy Research Institute. The objective of the system is to encourage often vague and/or unique ideas in the field of fundamental nuclear science and nuclear energy. The symposium on JAERI's Reimei Research Program carried out in the 2003 fiscal year was held at Tokai Research Establishment on 29th and 30th of June 2004. 42 papers were reported through the short presentation followed by the poster presentation, and the active discussions was carried out by about 120 attendees. Those presented papers are compiled in the proceedings. We hope that new researches will be grown and developed by the help of Reimei Research Promotion Project. The 40 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the 9th symposium on JAERI's Reimei Research Program

International Nuclear Information System (INIS)

Yamashita, Toshiyuki

2005-09-01

The Reimei (Dawn) Research Program is a research project based on public application to be conducted within the framework of the Reimei Research Promotion project of the Japan Atomic Energy Research Institute. The objective of the program is to encourage original and/or unique ideas in the field of fundamental nuclear science and nuclear energy. The Symposium on JAERI's Reimei Research Program carried out in the 2004 fiscal year was held at Tokai Research Establishment on 28th and 29th of June 2005. 38 papers were reported through the short presentation followed by the poster presentation, and animated discussions were carried out by about 120 attendees. These presented papers were compiled in the proceedings. We hope that new researches will be grown and developed by the help of Reimei Research Promotion project. The 37 of the presented papers are indexed individually. (J.P.N.)

Extended abstracts of the 12th JAERI workshop on high-Tc superconductors

Energy Technology Data Exchange (ETDEWEB)

Hojou, Kiichi; Okayasu, Satoru; Sasase, Masato [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Ishida, Takekazu [Osaka Prefectual Univ., Sakai (JP)] (eds.)

2001-03-01

This workshop was held on December 7-8, 2000 at JAERI (Tokai). The research group at JAERI shares a responsibility for material modification of high-Tc superconductors by irradiation in 'the multi-core project II of the high temperature superconducting material research' organized by STA (Science and Technology Agency) of Japan. This report contains the extended abstracts of workshop presentations covering basic theories, various experimental results and material improvement studies of the superconductivity by high energy ion irradiation. The twelve presentations of the workshop were devoted to a mini symposium where the direct observations of vortices were discussed in view of the various sophisticated techniques. (author)

Extended abstracts of the 12th JAERI workshop on high-Tc superconductors

International Nuclear Information System (INIS)

Hojou, Kiichi; Okayasu, Satoru; Sasase, Masato

2001-03-01

This workshop was held on December 7-8, 2000 at JAERI (Tokai). The research group at JAERI shares a responsibility for material modification of high-Tc superconductors by irradiation in 'the multi-core project II of the high temperature superconducting material research' organized by STA (Science and Technology Agency) of Japan. This report contains the extended abstracts of workshop presentations covering basic theories, various experimental results and material improvement studies of the superconductivity by high energy ion irradiation. The twelve presentations of the workshop were devoted to a mini symposium where the direct observations of vortices were discussed in view of the various sophisticated techniques. (author)

Data list of nuclear power plants in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Nakamura, Jinichi

1982-10-01

This report has collected and compiled the data by December in 1981 concerning performances, equipments and installations of the nuclear power plants in Japan. The data have been modified according to the changes produced after previous publication of 1979 edition including BWR and PWR (JAERI-M 8947) and 1980 edition including PWR (JAERI-M 9629), and extended to cover the new plants developed thereafter. All data have been processed and tabulated with a data processing computer program FREP. Besides this report, user also can refer to 'Data List of Nuclear Power Plant in Japan' through terminals equipped at various places in JAERI using TSS (Time Shearing System) network of FACOM M-200, and the explanation of the usage is given in the Appendix. (author)

Outline of developing projects of atomic bomb in Japan and USA

International Nuclear Information System (INIS)

Fukui, Shuji

2007-01-01

The content of the title connecting with the World War II is described hoping that younger researchers of nuclear physics could know some of the facts that scientists and the military of Japan and USA, respectively, had have developing projects of atomic bomb by fission reaction, although there are no official documents of those in Japan, even if there are some unofficial documents that are uncertain partly in Japan. Described are a chronological table, the content of research and development of atomic bombs, Japan's experiments by Kikuchi Laboratory of Osaka Imperial University and Nishina Laboratory of RIKEN, as well as the USA's action such as production of fissile nuclide, Pu-239 and U-235, selection of the site to fabricate atomic bomb, investigation the state of research and development of atomic bombs in Germany, Italy and Japan. (S.Y.)

Database structure and file layout of Nuclear Power Plant Database. Database for design information on Light Water Reactors in Japan

International Nuclear Information System (INIS)

Yamamoto, Nobuo; Izumi, Fumio.

1995-12-01

The Nuclear Power Plant Database (PPD) has been developed at the Japan Atomic Energy Research Institute (JAERI) to provide plant design information on domestic Light Water Reactors (LWRs) to be used for nuclear safety research and so forth. This database can run on the main frame computer in the JAERI Tokai Establishment. The PPD contains the information on the plant design concepts, the numbers, capacities, materials, structures and types of equipment and components, etc, based on the safety analysis reports of the domestic LWRs. This report describes the details of the PPD focusing on the database structure and layout of data files so that the users can utilize it efficiently. (author)

The management of radioactive wastes produced by medical institutions in Japan

International Nuclear Information System (INIS)

Kikuchi, Akira

1981-01-01

The use of radiopharmaceuticals is faced with rather dark prospects. The reason is that the management of radioactive wastes does not work smoothly. In the present management system for low level radioactive wastes in Japan, the Japan Radioisotope Association (JRIA) plays the part of collecting them and the Japan Atomic Energy Research Institute (JAERI) plays that of treating them. The volume of radioactive wastes collected, however, is far greater than that treated. Correspondingly, JRIA has to store the excessive radioactive wastes. The construction of a new treatment facility is urgently needed and the search for a building lot goes on. All those concerned, the users and suppliers of radiopharmaceuticals, and so on, should be aware of the situation and cooperate to resolve the various problems concerning the management of radioactive wastes generated by themselves. (author)

Results from the Argonne, Los Alamos, JAERI collaboration

Energy Technology Data Exchange (ETDEWEB)

Meadows, J.; Smith, D.; Greenwood, L. [Argonne National Lab., IL (United States); Haight, R. [Los Alamos National Lab., NM (United States); Ikeda, Y.; Konno, C. [Japan Atomic Energy Research Inst., Ibaraki (Japan)

1993-07-01

Four sample packets containing elemental Ti, Fe, Ni, Cu, Nb, Ag, Eu, Tb and Hf have been irradiated in three distinct accelerator neutron fields, at Argonne National Laboratory and Los Alamos National Laboratory, USA, and Japan Atomic Energy Research Institute, Tokai, Japan. The acquired experimental data include differential cross sections and integral cross sections for the continuum neutron spectrum produced by 7-MeV deuterons incident on thick Be-metal target. The U-238(n,f) cross section was also measured at 10.3 MeV as a consistency check on the experimental technique. This the third progress report on a project which has been carried out under the auspices of an IAEA Coordinated Research Program entitled ``Activation Cross Sections for the Generation Of Long-lived Radionuclides of Importance in Fusion Reactor Technology``. The present report provides the latest results from this work. Comparison is made between the 14.7-MeV cross-section values obtained from the separate investigations at Argonne and JAERI. Generally, good agreement observed within the experimental errors when consistent sample parameters, radioactivity decay data and reference cross values are employed. A comparison is also made between the experimental results and those derived from calculations using a nuclear model. Experimental neutron information on the Be(d,n) neutron spectrum was incorporated in the comparisons for the integral results. The agreement is satisfactory considering the various uncertainties that are involved.

Development of control and data processing system for JAERI ERL-FEL

International Nuclear Information System (INIS)

Kikuzawa, Nobuhiro

2005-03-01

A personal computer (PC) based distributed control system has been developed for Free Electron Laser (FEL) at Japan Atomic Energy Research Institute (JAERI) and operated since 1992. The control system was implemented on Ethernet LAN of PCs, Nippon Electric Company (NEC Corp.) PC-9800 series 32 bit personal computers. It became troublesome to maintain the control system, because many application programs did not work on outdated hardware interfaces and operating system. Furthermore, since security updates of the operating system (OS) were no longer provided, the problem was in network security when many PCs were connected with the LAN. We have to solve these problems and to improve the reliability and the safety of the control system, an ITRON-based controller was developed. In Japan, the ITRON is very popular and embedded in many products such as industrial instruments or household appliances that are demanded of its high reliability. When the local controller was installed, a new control program was developed by Java language which had high compatibility on many platforms so that replacement of the computer for consoles might become easy in future. High reliability and interchangeability have been successfully realized by them, and the control system made long continuous operation possible. (author)

Medical set-up of boron neutron capture therapy (BNCT) for malignant glioma at the Japan research reactor (JRR)-4

International Nuclear Information System (INIS)

Yamamoto, T.; Matsumura, A.; Nose, T.; Shibata, Y.; Nakai, K.; Sakurai, F.; Kishi, T.; Kumada, H.; Yamamoto, K.; Torii, Y.

2001-01-01

The University of Tsukuba project for boron neutron capture therapy (BNCT) was initiated at the Japan Atomic Energy Research Institute (JAERI) in 1992. The clinical study for BNCT began at the Japan Research Reactor (JRR)-2 of the JAERI in November 1995. By the end of 1998, a new medical irradiation facility had been installed in JRR-4 of that included a new medical treatment room and patient-monitoring area adjacent to the irradiation room. The medical treatment room was built to reflect a hospital-type operation room that includes an operating table with a carbon head frame, anesthesia apparatus with several cardiopulmonary monitors, etc. Following craniotomy in the treatment room, a patient under anesthesia is transported into the irradiation room for BNCT. The boron concentration in tissue is measured with prompt gamma ray analysis (PGA) and simultaneously by inductively coupled plasma atomic emission spectroscopy (ICP-AES) methods. For the immediate pre- and post-BNCT care, a collaborating neurosurgical department of the University of Tsukuba was prepared in the vicinity of the JAERI. The long term follow-up is done at the University of Tsukuba Hospital. Epithermal neutron beam also became available at the new JRR-4. By changing the thickness and/or the configuration of heavy water, a cadmium plate, and a graphite reflector, the JRR-4 provides a variety of neutron beams, including three typical beams (Epithermal mode and Thermal modes I and II). Intraoperative BNCT using the thermal beam is planned to study at the beginning of the clinical trial. The ongoing development of the JAERI Computational Dosimetry System (JCDS) and radiobiological studies have focused in the application of the epithermal beam for BNCT. After obtaining these basic data, we are planning to use the epithermal beam for intraoperative BNCT. (author)

Selection of JAERI'S HTGR-GT concept

International Nuclear Information System (INIS)

Muto, Y.; Ishiyama, S.; Shiozawa, S.

2001-01-01

In JAERI, a feasibility study of HTGR-GT has been conducted as an assigned work from STA in Japan since January 1996. So far, the conceptual or preliminary designs of 600, 400 and 300 MW(t) power plants have been completed. The block type core and pebble-bed core have been selected in 600 MW(t) and 400/300 MW(t), respectively. The gas-turbine system adopts a horizontal single shaft rotor and then the power conversion vessel is separated into a turbine vessel and a heat exchanger vessel. In this paper, the issues related to the selection of these concepts are technically discussed. (author)

Environmental monitoring data around the Chernobyl nuclear power plant used in the cooperative research project between JAERI and CHESCIR (Ukraine). Cooperative research

International Nuclear Information System (INIS)

Ueno, Takashi; Matsunaga, Takeshi; Amano, Hikaru

2003-01-01

This report is a compilation of the shared data derived from the environmental monitoring by RADEK (The state Enterprise for Region Monitoring of Environment and Dosimetric Control of Ukraine) and the record of environmental characteristics derived from field observations during a research project (1992-1999) between JAERI (Japan Atomic Energy Research Institute) and CHESCIR (Chernobyl Science and Technology Centre for International Research). The compiled data in this report are especially related to one particular research subject (Subject-3) of the project on the migration of radionuclides released into the terrestrial and aquatic environments after a nuclear accident. The present report shows the basis of published works concerning Subject-3. (author)

Present status of reactor physics in the United States and Japan-I. 5. Development of the MVP Monte Carlo Code at JAERI

International Nuclear Information System (INIS)

Mori, T.; Okumura, K.; Nagaya, Y.

2001-01-01

The MVP general-purpose continuous-energy Monte Carlo code for neutron and photon transport calculations, together with its multigroup version GMVP, has been developed since the late 1980's at Japan Atomic Energy Research Institute (JAERI). These two codes were designed for vector supercomputers at the first stage, and then a parallel processing capability was added for several computers including workstation clusters. The first versions of the codes were released for domestic use in 1994, with cross-section libraries based on JENDL, ENDF/B, etc. Since then, many functions have been added for production use. Special features and main capabilities are as follows: 1. vectorization and parallelization; 2. combinatorial geometry with multiple-lattice capability and the statistical geometry model; 3. the probability table method for unresolved resonance; 4. realistic calculations of power reactors at arbitrary temperatures; 5. depletion calculations; 6. perturbation calculations for an eigenvalue (k eff ) problem; 7. useful tallies for improvement of the multigroup method such as effective macroscopic and/or microscopic cross sections, and so on. The MVP code is widely used in Japan, especially in the field of reactor physics analyses. Recently, the development work has concentrated on capabilities of applying the code to accelerator-driven subcritical reactors. For this purpose, we have been adding functions for the high-energy particle transport capability and simulations of the Feynman-α experiment (noise analysis). As a first step of extension of energy range and particles treated in MVP, the physics model of neutron reactions was modified to treat the (z, anything) reaction (MT = 5) in the ENDF-6 format. For a benchmark test of the modified MVP code, the TIARA shielding experiment on iron with quasi-mono-energetic p- 7 Li neutrons for E p 5 68 MeV was analyzed by using the LA- 150 cross-section library. In all the calculations, the measured spectrum of the source

Design of a lattice for JAERI storage ring (JSR)

International Nuclear Information System (INIS)

Harada, Shunji; Yokomizo, Hideaki; Yanagida, Kenichi

1990-08-01

The new 8GeV synchrotron radiation facility (SPring-8) is planned to be constructed in Japan, and our institute (JAERI) are involved in this project with RIKEN. A compact electron storage ring JSR has been constructed in JAERI in order to study various kind of accelerator technologies, to test some devices such as the insertion devices and the beam monitors, and to train young researchers. The ring size is limited by the available space of a linac building, so that the circumference of JSR becomes 20.546 m. However, even in this small ring, one straight section with the length of ∼1.5 m, where the dispersion is free, is provided for the insertion device study. JSR takes Chasman-Green lattice with a superperiodicity of three. JSR is possible not only to suppress the dispersion but also to leave it on the long straight section. An electron beam from a linac is accepted into JSR in any operating modes. (author)

Annual report of the Japan Atomic Energy Research Institute for fiscal 1999

International Nuclear Information System (INIS)

2000-01-01

The Japan Atomic Energy Research Institute (JAERI) has promoted some researches for contributing to general development of science and technology based on nuclear research and development such as neutron science research, light quantum and radiation beam science research, radiation application research, high level computational science research, advanced basic research, and so forth, along the 'Long-term plan on nuclear research, development and application' established on June, 1994. And, researches and developments on leading energy system bringing breakthrough of nuclear technology such as study on future type energy system, research and development of nuclear fusion, and high temperature engineering test research. In addition, as a research containing both fields of general nuclear science and nuclear energy, safety research and health and physics research were also promoted. Furthermore, together with not only inland co-operation with industry, university and institute, but also promotion of diverse international co-operation, effective research and development has been carried out by various research assistant business. Here were described in details on researches on neutron science, light quantum and radiation beam science, radiation application, material science, environmental science, advanced basic research, high level computational science, nuclear fusion, future type energy system, high-temperature engineering test, safety, and relative research, and on operation and safety management, relative technology and outsider operation, and construction arrangement. (G.K.)

Design and safety data of commercial nuclear power plants in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Harayama, Yasuo; Nakazima, Tetuo

1979-02-01

Following the previous JAERI-M 6732(1976) and JAERI-M 7261(1977), the 1978 edition as of the December is presented, which contains the data of design parameters, performance, components and equipments in nuclear power plants of Japan. Data are given in tables by computer processing. (author)

Present status and future perspectives of research and test reactor in Japan

International Nuclear Information System (INIS)

Kaneko, Yoshihiko; Kaieda, Keisuke

2000-01-01

Since 1957, Japan Atomic Energy Research Institute (JAERI) has constructed several research and test reactors to fulfill a major role in the study of nuclear energy and fundamental research. At present four reactors, the Japan Research Reactor No. 3 and No. 4 (JRR-3M and JRR-4 respectively), the Japan Materials Testing Reactor (JMTR) and the Nuclear Safety Research Reactor (NSRR) are in operation, and a new High Temperature Engineering Test Reactor (HTTR) has recently reached first criticality and now in the power up test. In 1966, the Kyoto University built the Kyoto University Reactor (KUR) and started its operation for joint use program of the Japanese universities. This paper introduces these reactors and describes their present operational status and also efforts for aging management. The recent tendency of utilization and future perspectives is also reported. (author)

Present status and future perspectives of research and test reactor in Japan

Energy Technology Data Exchange (ETDEWEB)

Kaneko, Yoshihiko [Atomic Energy Research Laboratory, Musashi Institute of Technology, Kawasaki, Kanagawa (Japan); Kaieda, Keisuke [Department of Research Reactor, Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)

2000-10-01

Since 1957, Japan Atomic Energy Research Institute (JAERI) has constructed several research and test reactors to fulfill a major role in the study of nuclear energy and fundamental research. At present four reactors, the Japan Research Reactor No. 3 and No. 4 (JRR-3M and JRR-4 respectively), the Japan Materials Testing Reactor (JMTR) and the Nuclear Safety Research Reactor (NSRR) are in operation, and a new High Temperature Engineering Test Reactor (HTTR) has recently reached first criticality and now in the power up test. In 1966, the Kyoto University built the Kyoto University Reactor (KUR) and started its operation for joint use program of the Japanese universities. This paper introduces these reactors and describes their present operational status and also efforts for aging management. The recent tendency of utilization and future perspectives is also reported. (author)

Establishment of the observing system for boron in steels by alpha-particle track etching method using JAERI reactor

International Nuclear Information System (INIS)

Asakura, Kentaro; Shibata, Koji; Sawahata, Hiroyuki; Kawate, Minoru; Harasawa, Susumu

2003-01-01

Alpha-particle track etching (ATE) method is most effective in observing boron distribution in steels. Previously, in Japan, neutron irradiation for this method was carried out in the reactor at the Institute of Atomic Energy, Rikkyo University. This reactor, however, was shut down in 1999. Therefore, the establishment of a new system for ATE method has been required and experimental research was performed using the reactor at the Japan Atomic Energy Research Institute (JAERI). It was clarified that the irradiation equipment for medical treatment of the reactor JRR-4 was most suitable for ATE method. The specimen trestle for low radioactive exposure was newly-developed. ATE image obtained by 12h irradiation using this trestle showed a good quality similar to that obtained using Rikkyo's reactor and that obtained using the trestle of the old model. Using this new trestle, the amount of neutron which the worker suffers during the operation at the irradiation equipment decreases from 4μSv/h to 0-1 μSv/h compared with the trestle of the old model. The total amount of thermal neutron after 12 h irradiation was almost same as that under the recommended condition of the reactor at Rikkyo University, 6.5 x 10 14 n cm -2 . (author)

Report of results of joint research using facilities in Japan Atomic Energy Research Institute in fiscal year 1987

International Nuclear Information System (INIS)

1988-06-01

The total themes of the joint research in fiscal year 1987 were 127. These are shown being classified into the general joint research in Tokai and Takasaki, neutron diffraction research and cooperative research. The general joint research is the standard utilization form using research reactors JRR-2 and JRR-4, Co-60 gamma irradiation facilities in Tokai and Takasaki, an electron beam irradiation facility in Takasaki, an electron beam linear accelator and hot laboratories, which are opened for common utilization by Japan Atomic Energy Research Institute. The cooperative research is carried out by concluding research cooperation contracts between the researchers of universities and JAERI. In the general joint research, radioactivation analysis, radiation chemistry, irradiation effect, neutron diffraction and so on are the main themes, and in the cooperative research, reactor technology, reactor materials, nuclear physics measurement and others are the main themes. The total number of visitors was 2629 man-day, and decreased due to the stop of JRR-2. Also other activities are reported. The abstracts of respective reports are collected in this book. (Kako, I.)

Acoustic emission measurement on large scale coils at JAERI

International Nuclear Information System (INIS)

Yoshida, K.; Hattori, Y.; Nishi, M.F.; Shimamoto, S.; Tsuji, H.

1986-01-01

The objective of acoustic emission measurement at Japan Atomic Energy Research Institute (JAERI) is an establishment of a general diagnostic method for superconducting magnet systems. Output of strain and displacement gages can not cover a whole system in monitoring premonitory phenomena of a magnet system s failure, because these sensors are mounted on points and therefore localized. Acoustic emissions can be transmitted to sensors through structural materials without electrical noise. Monitoring of acoustic emission will be one of the methods to predict a serious failure of magnet systems in a vacuum vessel. For this purpose, several sensors were installed on the Japanese LCT coil and the Test Module Coil (TMC). Some of acoustic activity was similar as seen in these coils. The correlation between voltage spikes and acoustic events is excellent during single coil charging mode, but poorer during out of plane force mode. There are no indicative acoustical phenomena before a magnet quench or during normal zone generation. The conditioning of acoustic events and voltage spikes can be seen after any cooling down. The localization of electrical insulation damage with the acoustic emission technique is one of its most useful applications

The joint project for high-intensity proton accelerators

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-08-01

Japan Atomic Energy Research Institute (JAERI) and the High Energy Accelerator Research Organization (KEK) agreed to promote the joint project integrating both the Neutron Science Project (NSP) of JAERI and the Japan Hadron Facility Project (JHF) of KEK for comprehensive studies on basic science and technology using high-intensity proton accelerator. This document describes the joint proposal prepared by the Joint Project Team of JAERI and KEK to construct accelerators and research facilities necessary both for the NSP and the JHF at the site of JAERI Tokai Establishment. (author)

System of the advanced volume reduction facilities for LLW at JAERI

International Nuclear Information System (INIS)

Higuchi, Hidekazu; Monma, Toshiyuki; Nakashio, Nobuyuki; Kozawa, Kazushige; Touhei, Toshio; Sudou, Tomoyuki; Mitsuda, Motoyuki; Kurosawa, Shigenobu; Henmi, Kou; Ishikawa, Joji; Kato, Mitsugu; Sato, Motoaki

2005-01-01

The Japan Atomic Energy Research Institute (JAERI) constructed the Advanced Volume Reduction Facilities (AVRF), in which volume reduction techniques are applied and achieved high volume reduction ratio, homogenization and stabilization by means of melting or super compaction processes for low level solid wastes. It will be able to produce waste packages for final disposal and to reduce the amount of the wastes by operating the AVRF. The AVRF consist of the Waste Size Reduction and Storage Facilities (WSRSF) and the Waste Volume Reduction Facilities (WVRF); the former have cutting installations for large size wastes and the latter have melting units and a super compactor. Cutting installations in the WSRSF have been operating since June 1999. Radioactive wastes treated so far amount to 600 m 3 and the volume reduction ratio is from 1/2 to 1/3. The WVRF have been operating with non-radioactive wastes since February 2003 for the training and the homogeneity investigation in the melting processes. The operation with radioactive wastes will start in FY2005. (author)

Study on burnup credit evaluation method at JAERI towards securing criticality safety rationale for management of spent fuel

International Nuclear Information System (INIS)

Nomura, Y.

1998-01-01

Lately, due to massive accumulation of spent fuel discharged from light water reactors in Japan, it is gradually demanded to introduce the so-called burnup credit methodology into criticality safety design for nuclear fuel cycle facilities, such as spent fuel storage pools and transport casks. In order to save space in the spent fuel storage pool of the Rokkasho Reprocessing Plant, the burnup credit design has been firstly implemented for its criticality safety evaluation. Here, its design conditions and operational control procedures are briefly shown and research using burned fuel at JAERI is explained to support its licensing safety review, focusing on the relevant content of the Nuclear Criticality Safety Handbook of Japan, which has been prepared so far and planned in the near future. Finally, international co-operation for study on burnup credit issues practiced by JAERI is addressed. (author)

The second eddy current testing of zircaloy tube samples from the OECD Halden reactor project at Reactor Fuel Examination Facility, Tokai, JAERI

International Nuclear Information System (INIS)

Ohwada, Isao; Nishino, Yasuharu

1986-07-01

The Reactor Fuel Examination Facility in Tokai/JAERI (Japan Atomic Energy Research Institute) joined to the second round robin programme on eddy current test of the Halden/IFE. In the programme, two zircaloy tube samples with some artificial defects were provided for measurements. To clarify the locations in axial and azimuthal directions, types and dimensions of the provided artificial defects, measured signals from eddy current test were analysed in comparison with the known defects on the calibration tube. As a result, fourteen defects were determined from the measurements. Then, the location, the type and the relative dimension of them were also revealed. The results of those eddy current test are described in this paper. (author)

Construction plan of ion irradiation facility in JAERI

International Nuclear Information System (INIS)

Tanaka, Ryuichi

1987-01-01

The Takasaki Radiation Chemistry Research Establishment of Japan Atomic Energy Research Institute (JAERI) started the construction of an ion irradiation facility to apply ion beam to the research and development of radiation resistant materials for severe environment, the research on biotechnology and new functional materials. This project was planned as ion beam irradiation becomes an effective means for the research on fundamental physics and advanced technology, and the national guideline recently emphasizes the basic and pioneering field in research and development. This facility comprises an AVF cyclotron with an ECR ion source (maximum proton energy: 90 MeV), a 3 MV tandem accelerator, a 3 MV single end type Van de Graaf accelerator and a 400 kV ion implanter. In this report, the present status of planning the accelerators and the facility to be constructed, the outline of research plan, the features of the accelerators, and the beam characteristics are described. In this project, the research items are divided into the materials for space environment, the materials for nuclear fusion reactors, biotechnology, new functional materials, and ion beam technology. The ion beams required for the facility are microbeam, pulsed beam, multiple beam, neutron beam and an expanded irradiation field. (Kako, I.)

Development program on HTTR heat application systems at JAERI

International Nuclear Information System (INIS)

Ogawa, M.; Inagaki, Y.; Nishihara, T.; Shimizu, S.; Shiozawa, S.; Miyamoto, Y.

2000-01-01

The High Temperature Engineering Test Reactor (HTTR), which is a Japanese High Temperature Gas-cooled Reactor (HTGR) with 30 MW thermal output at 950 deg. C of the coolant outlet temperature, was constructed at Oarai Research Establishment of Japan Atomic Energy Research Institute (JAERI). The HTTR has attained the first criticality on November 1998. In JAERI, a hydrogen production system was selected as a heat utilization system of the HTTR. The development program on the HTTR hydrogen production system consists of two parts: one is to establish technologies connecting the hydrogen production system with the HTTR, the other is to establish technologies producing hydrogen from water by using nuclear heat. Finally, hydrogen can be produced from water by using nuclear heat supplied by the HTTR. In the hydrogen production system connected to the HTTR at first, JAERI selected a steam reforming process because its technology had matured. The HTTR hydrogen production system adopting the steam reforming process is being designed to produce hydrogen of about 3800 Nm 3 /hr by using nuclear heat (10MW, 905 deg. C) supplied from the HTTR. The safety principle and criteria are also being investigated for the HTTR hydrogen production system. A facility for an out-of-pile test prior to the demonstration test with the HTTR hydrogen production system is under manufacturing to carry out tests of safety, controllability and performance. The out-of-pile test facility simulates key components downstream an intermediate heat exchanger of the HTTR hydrogen production system on a scale of 1 to 30. The tests will be started in 2001 and continued for 4 years or longer. In parallel to the tests, a hydrogen/tritium permeation test and a corrosion test of a catalyst tube of a steam reformer are being carried out to obtain data necessary for the design of the HTTR hydrogen production system. A kind of thermochemical method called IS process is under studying to produce hydrogen from water by

Neck of public acceptance of atomic energy in Japan

International Nuclear Information System (INIS)

Tawara, Soichiro.

1978-01-01

Discussion is lacking concerning the public acceptance of atomic energy in Japan. In case of the atomic powered ship Mutsu, an opponent says that the ship carries an atomic bomb, but a member of a support group says that the ship emits soft radiation like a hot spring. This is an example of discussion, and most of discussions are made under the political interest, instead of on the scientific base. In Japan, preparatory negotiations are required in advance to the decision making meeting in most cases. Therefore, most of substantial discussions are not public. Engineers in the nuclear industry can hardly express their opinion concerning the development of atomic energy. Most of the data for discussions are not original, but foreign data. Reasons for the development of atomic energy change case by case. It is necessary to consider that people will decide their opinion according to whether the responsible person is reliable or not. Some people oppose to atomic energy to find a new sense of value. Now, all people are requested to think and discuss the problem of atomic energy calmly. (Kato, T.)

Present state of control system of tandem accelerator in JAERI. Accidents frequently occurred in 1995 fiscal year

Energy Technology Data Exchange (ETDEWEB)

Hanashima, Susumu [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1996-12-01

Tandem accelerator in JAERI (Japan Atomic Energy Research Institute) has been controlled by parallel processing control system using plural microprocessors and parallel processing programming since 1992. As the control system has been smoothly operated since beginning of its usage, many system downs have been experienced at later half of 1995. After each system down, original damage has not been found and it has been recovered by usual restarting operation. Some found remarkable defects were corrected by correction of electric circuit. As a result, frequency of the system down was decreased remarkably but its level could not be reduced to a level before occurring this phenomenon. As operation of the accelerator is preferable without control line for urgent measure, fundamental determination method is planned by controlling humidity of the control room and replacing serial highway driver with a new type producing now. (G.K.)

Proceeding of the second steering conference relating to the 'agreement on the Implementation of Research at the Chernobyl Center for International Research' between CHECIR and JAERI

International Nuclear Information System (INIS)

Nagaoka, Toshi; Togawa, Orihiko; Moriuchi, Shigeru; Rybalko, S.I.; Sukhoruchkin, A.K.; Kazakov, S.V.

1994-11-01

On June, 1992, JAERI and CHECIR concluded an agreement on the Implementation of Research at the Chernobyl Center for International Research (CHECIR). Based on the agreement, JAERI started 'Study on Assessment and Analysis of Environmental Radiological Consequences and Verification of an Assessment System.' CHECIR and JAERI make it a rule to hold steering conference twice a year in order to ensure mutual understanding and exchange of opinion because it its indispensable for smooth and effective implementation of this project. The first steering conference in Japan was held in February of 1994, and three research leaders of CHECIR side were invited from Ukraine. At that time, they gave lectures concerning the environmental Headquarter of JAERI. Progress reports on subject-1 and subject-2 were given from JAERI side at the steering conference. The 5 of presented papers are indexed individually. (author)

Minutes of the IFMIF technical meetings, May 17-20, 2005, Tokyo, Japan

International Nuclear Information System (INIS)

Ida, Mizuho; Nakamura, Hiroo; Yutani, Toshiaki; Maebara, Sunao; Umetsu, Tomotake; Sugimoto, Masayoshi

2005-08-01

The International Fusion Materials Irradiation Facility (IFMIF) Technical Meetings were held on May 17-20, 2005 at Japan Atomic Energy Research Institute (JAERI) Tokyo. The main objectives were 1) to review technical status of the subsystems; accelerator, target and test facilities, 2) to technically discuss interface issues between target and test facilities, 3) to review results of peer-reviews performed in the EU and Japan, 4) to harmonize design/experimental activities among the subsystems, 5) to review and discuss the Engineering Validation and Engineering Design Activity (EVEDA) tasks, and 6) to make a report of 1) - 5) to the IFMIF Executive Subcommittee. This report presents a brief summary of the Target Technical, Meeting, Test Facilities Technical Meeting, Target/Test Facilities Interface Meeting, Accelerator Technical Meeting and the Technical Integration Meeting. (author)

Environmental performance data in 'Japan Atomic Energy Agency Report 2016'

International Nuclear Information System (INIS)

Suzuki, Yurina; Kanai, Katsuta; Sato, Sadayuki; Tatebe, Kazuaki

2017-03-01

In September, 2016 Japan Atomic Energy Agency (JAEA) published results of environmental activity as a part of 'Japan Atomic Energy Agency Report 2016' concerning the activities of FY 2015 under 'Law Concerning the Promotion of Business Activities with Environmental Consideration by Specified Corporations, etc., by Facilitating Access to Environmental Information, and Other Measures'. This report has been edited to show detailed environmental performance data in FY 2015 as the base of the 'Japan Atomic Energy Agency Report 2016'. This report would not only ensure traceability of the data in order to enhance the reliability of the environmental report, but also make useful measures for promoting activities of environmental considerations in JAEA. (author)

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

Author Affiliations. I Tanaka1 2. Neutron Science Research Center, Japan Atomic Energy Research Institute (JAERI), Tokai, Ibaraki 319-1195, Japan; Faculty of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, Japan ...

A review of fast reactor program in Japan. April 1997 - March 1998

International Nuclear Information System (INIS)

1998-01-01

This report describes the development and activities on fast reactor in Japan for the period of April 1997 - March 1998. During this period, two important results were drawn by the Special Committee on Fast Breeder Reactors (FBRs) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) Reform Committee, respectively. The Special Committee on FBRs discussed on the future FBR development in Japan including the Prototype FBR 'Monju' operation, and proposed its conclusion as the final report to the Japan Atomic Energy Commission (JAEC) on December 1, 1997. The PNC Reform Committee reviewed PNC's management and safety assurance system, and recommended to reform PNC to a new organization. Each committee result is outlined in this report. The Experimental Fast Reactor 'Joyo' operated 30th - 32nd cycle. In parallel with the operation, the Joyo Upgrading Program (MK-III program) is in progress. Five MK-III driver fuel subassemblies were loaded to the core in the 32nd cycle. Monju comprehensive safety review, which was started in December 1996, was continued through 1997, and was completed in March 1998. The DFBR Plant Optimization (phase 2) design study was launched by the Japan Atomic Power Company (JAPC) with goal of constructing FBR plant that achieves both reliability and economy from FY 1997 for three years. Research and development works are underway under the discussion and coordination of the Japanese FBR R and D Steering Committee, which is composed of PNC, JAPC, Japan Atomic Energy Research Institute (JAERI) and Central Research Institute of Electric Power Industry (CRIEPI). (author)

Dose intercomparison study involving Fricke, ethanol chlorobenzene, PMMA and alanine dosimeters

International Nuclear Information System (INIS)

Lanuza, L.G.; Cabalfin, E.G.; Kojima, T.; Tachibana, H.

1999-01-01

A dose intercomparison study was carried out between the Philippine Nuclear Research Institute (PNRI) and Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute (JAERI) to determine reliability of the dosimetry systems being used by PNRI employing ethanol chlorobenzene (ECB), Fricke and alanine dosimeters. The Fricke and ECB dosimeters were prepared at PNRI while the alanine-polystyrene dosimeter was provided by JAERI. Fricke or ECB dosimeters were irradiated together with alanine at PNRI gamma irradiation facilities. Analyses of the Fricke and ECB dosimeters were performed at PNRI while alanine dosimeters were analyzed at JAERI. A comparison study between alanine and polymethylmethacrylate (PMMA, Radix RN15) dosimeters was also undertaken at JAERI. The dosimeters were irradiated together under different irradiation conditions using the gamma irradiation facilities of JAERI and Radia Industry Co. Ltd. (Japan). Evaluations of PMMA and alanine dosimeters were both performed at JAERI. Result of the dose intercomparison of PNRI with the International Atomic Energy Agency through the International Dose Assurance Service (IDAS) is also presented. (author)

Dose intercomparison study involving Fricke, ethanol chlorobenzene, PMMA and alanine dosimeters

Energy Technology Data Exchange (ETDEWEB)

Lanuza, L G; Cabalfin, E G [Philippine Nuclear Research Institute, Quezon City (Philippines); Kojima, T; Tachibana, H [Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research institute, Takasaki (Japan)

1999-03-01

A dose intercomparison study was carried out between the Philippine Nuclear Research Institute (PNRI) and Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute (JAERI) to determine reliability of the dosimetry systems being used by PNRI employing ethanol chlorobenzene (ECB), Fricke and alanine dosimeters. The Fricke and ECB dosimeters were prepared at PNRI while the alanine-polystyrene dosimeter was provided by JAERI. Fricke or ECB dosimeters were irradiated together with alanine at PNRI gamma irradiation facilities. Analyses of the Fricke and ECB dosimeters were performed at PNRI while alanine dosimeters were analyzed at JAERI. A comparison study between alanine and polymethylmethacrylate (PMMA, Radix RN15) dosimeters was also undertaken at JAERI. The dosimeters were irradiated together under different irradiation conditions using the gamma irradiation facilities of JAERI and Radia Industry Co. Ltd. (Japan). Evaluations of PMMA and alanine dosimeters were both performed at JAERI. Result of the dose intercomparison of PNRI with the International Atomic Energy Agency through the International Dose Assurance Service (IDAS) is also presented. (author) 8 refs, 3 figs, 4 tabs

Training of instructors on nuclear safety in Asian Countries

International Nuclear Information System (INIS)

Ikuta, Yuko; Shitomi, Hajimu; Saeki, Masakatsu

2002-01-01

Japan Atomic Energy Research Institute (JAERI)is conducting the international cooperation's of training of the foreign instructors and sending the Japanese teacher to the countries of Indonesia, Thailand (both from 1996) and Vietnam (2000). The training is performed in the JAERI for the future instructors of the concerned country for the period of essentially 2 months and is mainly on nuclear safety principles and safety handling of unsealed radioactive sources. Until 2001, 22 instructors from those countries have been trained in 142 courses. The sent Japanese teacher together with the trained instructor conduct the education of mainly radiation protection and measurement for personnel in ETC of BATAN (Education and Training Center, Indonesia atomic energy agency), radiation protection and atomic energy technology/application in OAEP (Office of Atomic Energy for Peace, Thailand) and the same subjects as BATAN in VAEC (Vietnam Atomic Energy Commission). Instruments for radiation measurement are essentially from Japan. This JAERI international cooperation will be open to other Asian countries. (K.H.)

Training of instructors on nuclear safety in Asian Countries

Energy Technology Data Exchange (ETDEWEB)

Ikuta, Yuko; Shitomi, Hajimu; Saeki, Masakatsu [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Nuclear Technology and Education Center

2002-11-01

Japan Atomic Energy Research Institute (JAERI)is conducting the international cooperation's of training of the foreign instructors and sending the Japanese teacher to the countries of Indonesia, Thailand (both from 1996) and Vietnam (2000). The training is performed in the JAERI for the future instructors of the concerned country for the period of essentially 2 months and is mainly on nuclear safety principles and safety handling of unsealed radioactive sources. Until 2001, 22 instructors from those countries have been trained in 142 courses. The sent Japanese teacher together with the trained instructor conduct the education of mainly radiation protection and measurement for personnel in ETC of BATAN (Education and Training Center, Indonesia atomic energy agency), radiation protection and atomic energy technology/application in OAEP (Office of Atomic Energy for Peace, Thailand) and the same subjects as BATAN in VAEC (Vietnam Atomic Energy Commission). Instruments for radiation measurement are essentially from Japan. This JAERI international cooperation will be open to other Asian countries. (K.H.)

Design of the JAERI Fuel Cleanup System for the Tritium Systems Test Assembly

International Nuclear Information System (INIS)

Konishi, Satoshi; Hayashi, Takumi; Naruse, Yuji; Okuno, Kenji; Carlson, R.V.; Anderson, J.L.

1993-03-01

TSTA is operated under the US-Japan collaboration program for the study of fusion fuel cycle technology. A plasma exhaust processing subsystem, JAERI Fuel Cleanup (JFCU) was fabricated in Japan, and installed at the TSTA as a major subsystem of the TSTA loop under the agreement. This process is based on some Japanese developed components, and designed to meet TSTA requirements by both parties. This document describes all the technical and safety features in accordance with the LANL QA format. The process has a capability to process simulated plasma exhaust at the flow rate of 15 mol/h, that is 1/5 for ITER. (author)

Helical-type device and laser fusion. Rivals for tokamak-type device at n-fusion development in Japan

International Nuclear Information System (INIS)

Anon.

1994-01-01

Under the current policy on the research and development of nuclear fusion in Japan, as enunciated by the Atomic Energy Commission of Japan, the type of a prototype fusion reactor will be chosen after 2020 from tokamak, helical or some other type including the inertial confinement fusion using lasers. A prototype fusion reactor is the next step following the tokamak type International Thermonuclear Experimental Reactor (ITER). With the prototype reactor, the feasibility as a power plant will be examined. At present the main research and development of nuclear fusion in Japan are on tokamak type, which have been promoted by Japan Atomic Energy Research Institute (JAERI). As for the other types of nuclear fusion, researches have been carried out on the helical type in Kyoto University and National Institute for Fusion Science (NIFS), the mirror type in Tsukuba University, the tokamak type using superconductive coils in Kyushu University, and the laser fusion in Osaka University. The features and the present state of research and development of the Large Helical Device and the laser fusion which is one step away from the break-even condition are reported. (K.I.)

Fuel irradiation research of Japan at Halden reactor. Achievement of cooperative researches between JAERI and several organizations in the period from 2000 to 2002 (Joint research)

International Nuclear Information System (INIS)

2004-03-01

JAERI has performed cooperative researches with several Japanese organizations utilizing the Halden Boiling Heavy Water Reactor(HBWR) which is located at Halden in Norway. These researches are carried out based on the contracts of the cooperative researches, which are revised every three years, in accordance with the renewal of the participation of JAERI to the OECD Halden Reactor Project. This report summarizes the objectives, contents and outlines of the achievements of the cooperative researches during the three years from 2000 January to 2002 December. During the period, seven cooperative researches had been carried out. Two of them had been completed and other five researches have been continued to the next three-year period. Most of them are irradiation test researches of advanced fuel and cladding in order to prepare the higher burnup utilization and introduction of LWR fuel and MOX fuel in LWRs of Japan. As the researches of fuel irradiation usually take long time for preparing test and irradiation, three years are usually not enough to obtain some achievements from the irradiation tests. Therefore, five cooperative researches have been continued to the next three-year period. In this report, the achievements of the researches continued to the next period are not final one but a kind of progress report. (author)

Experiences in monitoring airborne radioactive contamination in JAERI

International Nuclear Information System (INIS)

Ikezawa, Y.; Okamoto, T.; Yabe, A.

1980-01-01

The following results were obtained at the Japan Atomic Energy Research Institute (JAERI) from experience in air monitoring at the hot cells for handling highly radioactive materials, the glove box containing plutonium and the cell for producing 99 Mo. (1) The ratios of activities of airborne dust to those of whole dust were of the order of 10 -2 for the semi-volatile form of 125 Sb, and 10 -3 to 10 -4 for the particulate form of 137 Cs, 144 Ce and 144 Pr, when irradiated fuels were cut in the hot cells. (2) The activity median aerodynamic diameter (AMAD) of airborne particle size distributions varied from O.4 to 15 μm with changing geometric standard deviation (sigmasub(g)) 1.7 to 7, depending on types of metallurgical treatment of fuels and on kinds of work in the cells. (3) A resuspension factor (the ratio of the concentration of airborne contamination to the surface contamination) was found to be 4x10 -8 to approximately 2x10 -7 cm -1 for plutonium oxide deposited on the floor surface. (4) The collection efficiency of the charcoal-loaded filter paper for airborne radioiodine, consisting of 60% inorganic and 40% organic iodide, was over 95% under conditions of relative humidity 40 to approximately 80% and face velocity 50 cm/sec, during the production of 99 Mo. (H.K.)

Annual report of the Japan Atomic Energy Research Institute, for fiscal 1987

International Nuclear Information System (INIS)

1988-01-01

Fiscal year 1987 fell on the year to revise the long term program every five years, and the new long term program was decided, and the course that JAERI takes hereafter was shown. In this new program, the safety research and the upgrading research in the development from LWRs to FBRs, the promotion of the research and development of high temperature engineering, nuclear fusion, the utilization of radiation and nuclear-powered ships, the basic research and the development of base technology for opening up atomic energy frontier, and the expansion of international cooperation were emphasized as the role of JAERI. The research on engineering safety, the development of high temperature gas-cooled reactors, the research and development of nuclear fusion, and the research and development of nuclear-powered ships are reported. In the fields of the related research, basic research and the utilization of radiation, the research on the reactor physics of FBRs and thermal neutron reactors, the research on nuclear fuel and reactor materials, the research on reactor dismantling techniques, the development of tritium production technology and many others were advanced. The operation for utilizing JRR 2, JRR 4 and JMTR was carried out, and JRR 3 was under reconstruction. (K.I.)

Summary of the progress of reactor physics in Japan reviewing the activities related to NEA Committee on Reactor Physics

International Nuclear Information System (INIS)

Hirota, Jitsuya

1984-09-01

The progress of fast and thermal reactor physics, fusion neutronics and shielding researches in these twenty years can be clearly recognized in the reviews of reactor physics activities in Japan which had been perpared by the Special Committee on Reactor Physics: the joint committee under Atomic Energy Society of Japan and JAERI. Many topics of those discussed at the NEACRP meetings concerned fast reactor physics. Information exchange on the topics such as adjustment of group cross sections by integral data, central worth discrepancy, sodium void effect and heterogeneous core stimulated the researches in Japan. And achievements in Japan including those in the JAERI Fast Critical Facility FCA were reported and contributed largely to the international co-operation. In addition, the contribution from Japan was also made concerning a study of fusion blanket. Among various specialists' meetings recommended by NEACRP, those on nuclear data and benchmarks for reactor shielding were often held since 1973 and helpful to the progress of shielding researches in Japan. The Third Specialists' Meeting on Reactor Noise (SMORN-III) was held in Tokyo in 1981, indicating the recent progress in safety-related applications of reactor noise analysis. The NEACRP benchmark tests were quite useful to the progress of reactor physics in Japan, which included the benchmark calculations of BWR lattice cell, key parameters and burn-up characteristics of a large LMFBR, FBR and PWR shielding, and so on. It may be noted that the benchmark test on reactor noise analysis methods was successfully conducted by Japan in connection with SMORN-III. In addition, the co-operation was positively made to the compilation of light water lattice data, and the preparation of reviews on actinide production and burn-up, and blanket physics. (J.P.N.)

Centralized environmental radiation monitoring system in JAERI

International Nuclear Information System (INIS)

Katagiri, Hiroshi; Kobayashi, Hideo

1993-03-01

Japan Atomic Energy Research Institute (JAERI) has continued the radiation background survey and environmental radiation monitoring to ensure the safety of the residents around the Institute. For the monitoring of β and γ radiations and α and β radioactivities in air, the centralized automatic environmental radiation monitoring system (EMS) applying a computer with monitoring stations (MS) was established. The system has been renewed twice in 1973 and 1988. In 1962, a new concept emergency environmental γ-ray monitoring system (MP) was begun to construct and completed in 1965 independent of EMS. The first renewal of the EMS was carried out by focusing on the rapid and synthetic judgement and estimation of the environmental impacts caused by radiation and radioactive materials due to the operation of nuclear facilities by centralizing the data measured at MS, MP, a meteorological station, stack monitors and drainage monitoring stations under the control of computer. Present system renewed in 1988 was designed to prevent the interruption of monitoring due to computer troubles, communication troubles and power failures especially an instant voltage drop caused by thunder by reflecting the experiences through the operation and maintenance of the former system. Dual telemeters whose power is constantly supplied via batteries (capable of 10 min. monitoring after power failure) are equipped in the monitoring center to cope with telemeter troubles, which has operated successfully without any suspension being attributable to the power failures and telemeter troubles. (J.P.N.)

Studies on groundwater flow and radionuclide migration at underground environments. Final report of collaboration research between JAERI and AECL

International Nuclear Information System (INIS)

Ogawa, Hiromichi; Nagao, Seiya; Yamaguchi, Tetsuji

2001-01-01

The Japan Atomic Energy Research Institute (JAERI) conducted a collaboration program Phase II with the Atomic Energy of Canada Limited (AECL) from 1994 to 1998. The program was started to contribute the establishment of safety assessment methodology for the geological disposal of high-level radioactive wastes on the basis of the results from the Phase I program (1987-1993). The Phase II program consisted of following experimental items: (1) radionuclide migration experiments for quarried blocks (1m x 1m x 1m) of granite with natural fracture under in-situ geochemical conditions at 240 m level of Underground Research Laboratory of AECL; (2) study on the effects of dissolved organic materials extracted from natural groundwaters on radionuclide migration; (3) study on groundwater flow using environmental isotopes at two different geologic environments; (4) development of groundwater flow and radionuclide transport model for heterogeneous geological media. The mobility of radionuclides was retarded in the fracture by the deep geological conditions and the fracture paths. The groundwater humic substances with high molecular size were enhanced for the mobility of radionuclides in the sand and granitic media due to the complexation. The application of 36 Cl and 129 I for the analysis on the long-term groundwater flow can be validated on the basis of investigation at the URL site. Moreover, the geostatistical model for the analysis on groundwater flow and radionuclide migration was developed, and was able to describe the groundwater flow and the migration of environmental tracers at AECL sites. This report summaries the results of the Phase II program between JAERI and AECL. (author)

Studies on groundwater flow and radionuclide migration at underground environments. Final report of collaboration research between JAERI and AECL

Energy Technology Data Exchange (ETDEWEB)

Ogawa, Hiromichi; Nagao, Seiya; Yamaguchi, Tetsuji [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment] [and others

2001-01-01

The Japan Atomic Energy Research Institute (JAERI) conducted a collaboration program Phase II with the Atomic Energy of Canada Limited (AECL) from 1994 to 1998. The program was started to contribute the establishment of safety assessment methodology for the geological disposal of high-level radioactive wastes on the basis of the results from the Phase I program (1987-1993). The Phase II program consisted of following experimental items: (1) radionuclide migration experiments for quarried blocks (1m x 1m x 1m) of granite with natural fracture under in-situ geochemical conditions at 240 m level of Underground Research Laboratory of AECL; (2) study on the effects of dissolved organic materials extracted from natural groundwaters on radionuclide migration; (3) study on groundwater flow using environmental isotopes at two different geologic environments; (4) development of groundwater flow and radionuclide transport model for heterogeneous geological media. The mobility of radionuclides was retarded in the fracture by the deep geological conditions and the fracture paths. The groundwater humic substances with high molecular size were enhanced for the mobility of radionuclides in the sand and granitic media due to the complexation. The application of {sup 36}Cl and {sup 129}I for the analysis on the long-term groundwater flow can be validated on the basis of investigation at the URL site. Moreover, the geostatistical model for the analysis on groundwater flow and radionuclide migration was developed, and was able to describe the groundwater flow and the migration of environmental tracers at AECL sites. This report summaries the results of the Phase II program between JAERI and AECL. (author)

Conceptual design report on advanced marine reactor MRX of Japan

International Nuclear Information System (INIS)

Wang Shengguo

1995-01-01

Design studies on the advanced marine reactors have been done continuously since 1983 at Japan Atomic Energy Institute (JAERI) in order to develop attractive marine reactors for the next generation. At present, two concepts of marine reactor are being formulated. One is 100 MWt MRX (marine Reactor X) for the marine reactor and the other is 150 kWe DRX (Deep Sea-Reactor X) for a deep-sea research vessel. They are characterized by an integral type PWR, built-type control rod drive mechanisms, a water-filled container and a passive decay heat removal system, which realize highly passive safe and compact reactors. The paper is a report about all major results of the MRX design study

Progress of neutral beam R and D for plasma heating and current drive at JAERI

International Nuclear Information System (INIS)

Ohara, Y.

1995-01-01

Recent progress and future plans regarding development of a high power negative ion source at the Japan Atomic Energy Research Institute (JAERI) are described. The neutral beam injection system, which is expected to play an important role not only in plasma heating but also in the plasma current drive in the fusion reactor, requires a high power negative ion source which can produce negative deuterium ion beams with current of order 20A at energy above 1MeV. In order to realize such a high power negative ion beam, intensive research and development has been carried out at JAERI since 1984. The negative hydrogen ion beam current of 10A achieved in recent years almost equals the value required for the fusion reactor. With regard to the negative ion acceleration, a high current negative ion beam of 0.2A has been accelerated up to 350keV electrostatically. On the basis of this recent progress, two development plans have been initiated as an intermediate step towards the fusion reactor. One is to develop a 500keV, 10MW negative ion based neutral beam injection system for JT-60U to demonstrate the neutral beam current drive in a high density plasma. The other is to develop a 1MeV, 1A ion source to demonstrate high current negative ion acceleration up to 1MeV. On the basis of this research and development, an efficient and reactor relevant neutral beam injection system will be developed for an experimental fusion reactor such as the International Thermonuclear Experimental Reactor. ((orig.))

Annual report of the Japan Atomic Energy Research Institute, for fiscal 1989

International Nuclear Information System (INIS)

1990-01-01

Japan Atomic Energy Research Institute has promoted the research on nuclear safety, the research and development of high temperature engineering and nuclear fusion which are the leading projects bringing about the breakthrough in atomic energy technology, the research on radiation utilization and the research and development of nuclear-powered ships, following the 'Plan of development and long term utilization of atomic energy' decided in 1987, as the central, general research institute in atomic energy field in Japan. Also the advanced basic research for opening atomic energy frontier and various international cooperation as well as the cooperation in Japan have been promoted. The engineering safety of nuclear facilities and environmental safety, the construction of the Nuclear Fuel Cycle Safety Engineering Research Facility, the design of the High Temperature Engineering Test Reactor and the various tests related to it, the reconstruction of JT-60 for increasing the current, the design of a nuclear fusion reactor, the high utilization of radiation using ion beam, the construction of Sekinehama Port for the nuclear-powered ship 'Mutsu', the power increasing test of the reactor of the Mutsu, the reconstruction of JRR-3 and others are reported. (K.I.)

Nuclear calculation for employing medium enrichment in reactors of Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Miyasaka, Yasuhiko

1979-01-01

The fuel used for the research reactors of Japan Atomic Energy Research Institute (JAERI) is presently highly enriched uranium of 93%. However, the U.S. government (the supplier of fuel) is claiming to utilize low or medium enriched uranium from the viewpoint of resistivity to nuclear proliferation, and the availability of highly enriched uranium is becoming hard owing to the required procedure. This report is described on the results of nuclear calculation which is the basis of fuel design in the countermeasures to the reduction of enrichment. The basic conception in the reduction of enrichment is three-fold: to lower the latent potential of nuclear proliferation as far as possible, to hold the present reactor performance as far as possible, and to limit the reduction in the range which is not accompanied by the modification of reactor core construction and cooling system. This time, the increase of the density and thickness of fuel plates and the effect of enrichment change to 45% on reactivity and neutron flux were investigated. The fuel of UAl sub(x) - Al system was assumed, which was produced by powder metallurgical method. The results of investigations on JRR-2 and JMTR reactors revealed that 45% enriched fuel does not affect the performances much. However, deterioration of the performances is not neglegible if further reduction is needed. In future, the influence of the burn-up effect of fuel on the life of reactor cores must be investigated. (Wakatsuki, Y.)

Research and development plan of fusion technologies in JAERI toward DEMO reactors

International Nuclear Information System (INIS)

Nishitani, Takeo; Hayashi, Takumi; Abe, Tetsuya; Akiba, Masato; Isono, Takaaki; Inoue, Takashi; Enoeda, Mikio; Okuno, Kiyoshi; Koizumi, Norikiyo; Sakamoto, Keishi; Sato, Satoshi; Jitsukawa, Shiro; Sugimoto, Masayoshi; Suzuki, Satoshi; Seki, Shogo; Takatsu, Hideyuki; Tanzawa, Sadamitsu; Tsuchiya, Kunihiko; Nishi, Masataka; Hayashi, Kimio; Matsui, Hideki; Yamanishi, Toshihiko; Watanabe, Kazuhiro

2005-03-01

In accordance with the 'Third Phase Basic Program on Fusion Research and Development' established by the Fusion Council of the Japan Atomic Energy Commission, research and development (R and D) of fusion technologies aim at realization of two elements: development of ITER key components and their improvement for higher performances; and construction of sound technical basis of fusion nuclear technologies essential for fusion energy utilization. JAERI has been assigned in the Third Phase Basic Program as a responsible institute for developing the above two elements, and accordingly has been implementing technology R and Ds categorized in the following three areas: R and D for ITER construction and operation; R and D for ITER utilization (blanket testing in ITER) and toward DEMO; and R and D on basic fusion technologies. The present report reviews the status and the plan of fusion technology R and Ds in the latter two areas, and presents the technical objectives, technical issues, status of R and D and near-term R and D plans for: breeding blankets; structural materials; the IFMIF program; improvements of the key ITER components for higher performances toward DEMO; and basic fusion technologies. (author)

Proceedings of the seminar on the joint research project between JAERI and Universities. 'Actinide researches for 21st century - fusion between chemistry and engineering'. August 20-21, 1999, Japan Atomic Energy Research Inst., Tokai, Japan

International Nuclear Information System (INIS)

2000-06-01

The Seminar on the Joint Research Project between JAERI and Universities was held in Tokai, August 20-21, 1999, to discuss future perspectives of the actinide researches for the nuclear fuel cycle. The papers related to the Joint Research Project on the Backend Chemistry were presented and discussed. The present report complies the papers contributed to the Seminar. (author)

Inquiry relating to safety due to modification of usage of nuclear fuel material (establishment of waste safety testing facility) in Tokai Laboratory, Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

1979-01-01

Application was made to the director of the Science and Technology Agency (STA) for the license relating to the modification of usage of nuclear fuel material (the establishment of waste safety testing facility) from the director of the Japan Atomic Energy Research Institute on November 30, 1978. After passing through the safety evaluation in the Nuclear Safety Bureau of STA, inquiry was conducted to the head of the Atomic Energy Safety Commission (AESC) on June 6, 1979, from the director of the STA. The head of AESC directed to conduct the safety examination to the head of the Nuclear Fuel Safety Examination Specialist Committee on June 7, 1979. The content of the modification of usage of nuclear fuel material is the establishment of waste safety testing facility to study and test the safety relating to the treatment and disposal of high level radioactive liquid wastes due to the reprocessing of spent fuel. As for the results of the safety examination, the siting of the waste safety testing facility which is located in the Tokai Laboratory, Japan Atomic Energy Research Institute (JAERI), and the test plan of the glass solidification of high level radioactive liquid are presented as the outline of the study plan. The building, main equipments including six cells, the isolation room and the glove box, the storage, and the disposal facilities for gas, liquid and solid wastes are explained as the outline of the facilities. Concerning the items from the viewpoint of safety, aseismatic design, slightly vacuum operation, shielding, decay heat removal, fire protection, explosion protection, criticality management, radiation management and environmental effect were evaluated, and the safety was confirmed. (Nakai, Y.)

Summary report of the 7th reduced-moderation water reactor workshop

International Nuclear Information System (INIS)

Akie, Hiroshi; Nabeshima, Kunihiko; Uchikawa, Sadao

2005-08-01

As a research on the future innovative water reactor, the development of Reduced-Moderation Water Reactors (RMWRs) has been performed in Japan Atomic Energy Research Institute (JAERI). The workshop on RMWRs is aiming at information exchange between JAERI and other organizations such as universities, laboratories, utilities and vendors, and has been held every year since 1998. The 7th workshop was held on March 5, 2004 under the joint auspices of JAERI and North Kanto branch of Atomic Energy Society of Japan. The program of the workshop was composed of 5 lectures and an overall discussion time. The workshop started with the lecture by JAERI on the status and future program of PMWR research and development, followed by the two presentations by JAERI and Japan Nuclear Cycle Development Institute, respectively, on the investigation and evaluation of water cooled reactor in Feasibility Study Program on Commercialized Fast Reactor Systems. The lectures were also made on the Japan's nuclear fuel cycle and scenarios for RMWRs deployment by JAERI, and on the next generation reactor development activity by Hitachi, Ltd. The main subjects of the overall discussion time were Na cooled fast reactor, deployment effects of RMWRs and the future plan of the RMWR research and development. This report includes the original papers presented at the workshop and summaries of the questions and answers for each lecture, as well as of the discussion time. In addition in the Appendices, there are included presentation handouts of each lecture, program of the workshop and the participants list. (author)

Outline of new Japan-U.S. atomic energy cooperation agreement

International Nuclear Information System (INIS)

Oki, Naotaka

1988-01-01

The former agreement was revised into the new Agreement between the Japanese Government and the U.S. Government for Cooperation Relating to Peaceful Utilization of Atomic Energy (simply referred as the new Japan-U.S. Atomic Energy Cooperation Agreement). The Implementation Convention between the Japanese Government and the U.S. Government Based on Article 11 of the Agreement between the Japanese Government and the U.S. Government for Cooperation Relating to Peaceful Utilization of Atomic Energy was also concluded. The new Agreement is intended to serve for long-term stabilization of the cooperative relationship for atomic energy between Japan and the U.S., strengthening of nuclear non-proliferation efforts, and improvement in the parity, regulation rights and bilateralism between the two countries. The Agreement states that the countries should cooperate in exchanging experts and information and supplying radioactive substance, that the specified nuclear substances can be stored, reprocessed, etc. after an agreement is made between the governments, that proper protection activities should be performed for the specified substances, that the cooperation under the Agreement is limited to peaceful purposes, etc. (Nogami, K.)

Research in JAERI on the backend of nuclear fuel cycle

International Nuclear Information System (INIS)

Maeda, Mitsuru; Takeshita, Isao

1999-01-01

Japan's policy of the backend of nuclear fuel cycle is to reprocess spent fuels and recycle recovered plutonium and uranium, under the principle of no surplus plutonium. High-level radioactive waste separated during reprocessing will be disposed of after solidification in vitrified form, followed by the storage for 30 to 50 years and finally by ultimate disposal in a deep geological formation. The role of JAERI and the effective utilization of NUCEF would become more important. The current status of JAERI's research on backend cycle is reviewed together with the future research direction with emphases on NUCEF utilization. (1) Major objectives of safety research is to develop safety criteria and establish technical bases for licensing, to improve the safety of current or near future technology and to clarify the safety margin of licensed technology. (2) The present goal of fundamental research is to show or clarify the chemical or scientific feasibility of advanced system such as for recycling minor actinides or for incinerating long-lived nuclides. (3) Supporting research for nuclear material control is also conducted mainly for international contribution to strengthened safeguards by IAEA and to frame working of international monitoring system for CTBT. (J.P.N.)

Report of the third seminar on nuclear physics at the energy region of the JAERI tandem-booster accelerator February 27-28, 1992, Tokai, Japan

International Nuclear Information System (INIS)

Iwamoto, Akira; Oshima, Masumi; Ikezoe, Hiroshi; Nagame, Yuichiro; Shinohara, Nobuo

1992-09-01

A seminar on new experiments to be studied and new experimental apparatus suitable for the JAERI tandem-booster accelerator being under construction was held at Tokai Research Establishment of JAERI in the period from February 27 to 28, 1992. Sixty eight participants from universities and from JAERI attended to discuss the following items: 1. Physics at low temperature, 2. Nuclear structure at high spin and at high excitation energy, 3. Application of unstable beam and their spectroscopy, 4. Nuclear reaction at intermediate energy, 5. New facilities. (author)

Radioisotope waste processing systems

International Nuclear Information System (INIS)

Machida, Tadashi

1978-01-01

The Atomic Energy Safety Bureau established the policy entitled ''On Common Processing System of Radioactive Wastes'' consulting with the Liaison Committee of Radioactive Waste Processing. Japan Atomic Energy Research Institute (JAERI) and Japan Radioisotope Association (JRIA) had been discussing the problems required for the establishment of the common disposal facilities based on the above policy, and they started the organization in spring, 1978. It is a foundation borrowing equipments from JAERI though installing newly some of them not available from JAERI, and depending the fund on JRIA. The operation expenses will be borne by those who want to dispose the wastes produced. The staffs are sent out from JAERI and JRIA. For animal wastes contaminated with RI, formaldehyde dipping should be abolished, but drying and freezing procedures will be taken before they are burnt up in a newly planned exclusive furnace with disposing capacity of 50 kg/hour. To settle the problems of other wastes, enough understanding and cooperation of users are to be requested. (Kobatake, H.)

Present status of nuclear power safety studies in JAERI, 1996; Genshiryoku anzensei kenkyu no genjo, heisei-8-nen

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-10-01

Japan Atomic Energy Research Institute has promoted the research on the engineering safety for nuclear reactors and nuclear fuel cycle facilities, the research on environmental safety for the objects of environmental radiation and radioactivity and the treatment and disposal of radioactive waste, and the development of the future technology related to the heightening of safety, according to the long term plan on the research, development and utilization of atomic energy that the state decided and the annual plan of various safety researches. It is an internationally important responsibility to ensure the safety, and JAERI has positively promoted bilateral and multilateral international cooperation and the exchange of information. In fiscal year 1995, the criticality experiment facility, the back end research facility, the waste disposal research facility and so on started the operation, and the researches on the soundness of high burnup fuel, the severe accidents of LERs, the abnormal chemical reaction in a fuel reprocessing plant, and the evaluation of environment radioactivity around Chernobyl were carried out. In this book, the results of the research on the safety carried out in fiscal year 1995 are reported synthetically. (K.I.)

Superconducting magnet development in Japan

International Nuclear Information System (INIS)

Yasukochi, K.

1983-01-01

The present state of R and D works on the superconducting magnet and its applications in Japan are presented. On electrical rotating machines, 30 MVA superconducting synchronous rotary condenser (Mitsubishi and Fuji) and 50 MVA generator are under construction. Two ways of ship propulsion by superconducting magnets are developing. A superconducting magnetically levitated and linear motor propelled train ''MAGLEV'' was developed by the Japan National Railways (JNR). The superconducting magnet development for fusion is the most active field in Japan. The Cluster Test program has been demonstrated on a 10 T Nb 3 Sn coil and the first coil of Large Coil Task in IEA collaboration has been constructed and the domestic test was completed in JAERI. These works are for the development of toroidal coils of the next generation tokamak machine. R and D works on superconducting ohmic heating coil are in progress in JAERI and ETL. The latter group has constructed 3.8 MJ pulsed coil. A high ramp rate of changing field in pulsed magnet, 200 T/s, has been tested successfully. High Energy Physics Laboratory (KEK) are conducting active works. The superconducting μ meson channel and π meson channel have been constructed and are operating successfully. KEK has also a project of big accelerator named ''TRISTAN'', which is similar to ISABELLE project of BNL. Superconducting synchrotron magnets are developed for this project. The development of superconducting three thin wall solenoid has been started. One of them, CDF, is progressing under USA-Japan collaboration

Summary report for IAEA CRP on lifetime prediction for the first wall of a fusion machine (JAERI contribution)

International Nuclear Information System (INIS)

Suzuki, Satoshi; Araki, Masanori; Akiba, Masato

1993-03-01

IAEA Coordinated Research Program (CRP) on 'Lifetime Prediction for the First Wall of a Fusion Machine' was started in 1989. Five participants, Joint Research Centre (JRC-Ispra), The NET team, Kernforschungszentrum Karlsruhe (KfK), Russian Research Center and Japan Atomic Energy Research Institute, contributed in this activity. The purpose of the CRP is to evaluate the thermal fatigue behavior of the first wall of a next generation fusion machine by means of numerical methods and also to contribute the design activities for ITER (International Thermonuclear Experimental Reactor). Thermal fatigue experiments of a first wall mock-up which were carried out in JRC-Ispra were selected as a first benchmark exercise model. All participants performed finite element analyses with various analytical codes to predict the lifetime of the simulated first wall. The first benchmark exercise has successfully been finished in 1992. This report summarizes a JAERI's contribution for this first benchmark exercise. (author)

Technical publications by JAERI staff in 1992, vol. 26

International Nuclear Information System (INIS)

1993-05-01

This list contains 969 references published as technical reports by JAERI and selected from JAERI personnel's papers in journals and other publications in 1992. A bibliographic description for each entry consists of title, carrier language, author(s) and source. The references fall into three groups. While JAERI report and JAERI-M report groups are sorted by report number, Papers-in-Journals group is arranged by the first author. The indexes are both by personal author and corporate entry. (author) 969 refs

Technical publications by JAERI staff in 1991, Vol. 25

International Nuclear Information System (INIS)

1992-05-01

This list contains 843 references published as technical reports by JAERI and selected from JAERI personnel's papers in journals and other publications in 1991. A bibliographic description for each entry consists of title, carrier language, author(s) and source. The references fall into three groups. While JAERI report and JAERI-M report groups are sorted by report number, Papers-in-Journals group is arranged by the first author. The indexes are both by personal author and corporate entry. (author) 843 refs

Technical publications by JAERI staff in 1990, Vol. 24

International Nuclear Information System (INIS)

1991-05-01

This list contains 752 references published as technical reports by JAERI and selected from JAERI personnel's papers in journals and other publications in 1990. A bibliographic description for each entry consists of title, carrier language, author(s) and source. The references fall into three groups. While JAERI report and JAERI-M report groups are sorted by report number, Papers-in-Journals group is arranged by the first author. The indexes are both by personal author and corporate entry. (author) 752 refs

Technical publications by JAERI staff in 1989, Vol. 23

International Nuclear Information System (INIS)

1990-05-01

This list contains 801 references published as technical reports by JAERI and selected from JAERI personnel's papers in journals and other publications in 1989. A bibliographic description for each entry consists of title, carrier language, author(s) and source. The references fall into three groups. While JAERI report and JAERI-M report groups are sorted by report number, Papers-in-Journals group is arranged by the first author. The indexes are both by personal author and corporate entry. (author) 801 refs

Progress report on neutron science. April 1, 2004 - March 31, 2005

International Nuclear Information System (INIS)

Kurihara, Kazuo; Moriai, Atsushi; Matsuda, Masaaki

2005-09-01

This issue summarizes research progress in neutron science at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor JRR-3 during the period between April 1, 2004 and March 31, 2005. This report contains highlights in research by 13 neutron research groups at JAERI and 91 summary articles. (author)

Annual report of Kansai Research Establishment 2004. April 1, 2004 - March 31, 2005

International Nuclear Information System (INIS)

Harami, Taikan; Mizuki, Jun'ichiro; Aoki, Katsutoshi; Baba, Yuji; Murakami, Yoichi; Kobayashi, Keisuke; Sakai, Toru; Nagashima, Akira; Yamakawa, Koichi; Nagashima, Keisuke; Daido, Hiroyuki; Koike, Masato; Yamagiwa, Mituru; Bulanov, Sergei V.; Minehara, Eisuke

2006-01-01

This report is the sixth issue of the annual report of Kansai Research Establishment, Japan Atomic Energy Research Institute. It covers status report of R and D and results of experiments conducted at the Advanced Photon Research Center and Synchrotron Radiation Research Center during the period from April 1, 2004 to March 31, 2005. The JAERI (Japan Atomic Energy Research Institute) have been unified with JNC (Japan Nuclear Cycle Development Institute) and became JAEA (Japan Atomic Energy Agency) on October 1st, 2005. (author)

Progress report on neutron science. April 1, 2003 - March 31, 2004

International Nuclear Information System (INIS)

Matsuda, Masaaki; Kurihara, Kazuo; Moriai, Atsushi

2005-03-01

This issue summarizes research progress in neutron science at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor JRR-3 during the period between April 1, 2003 and March 31, 2004. This report contains highlights in research from 10 neutron research groups at JAERI and summary reports of 82 papers. (author)

Progress of nuclear safety research - 2005

International Nuclear Information System (INIS)

Anoda, Yoshinari; Amaya, Masaki; Saito, Junichi; Sato, Atsushi; Sono, Hiroki; Tamaki, Hitoshi; Tonoike, Kotaro; Nemoto, Yoshiyuki; Motoki, Yasuo; Moriyama, Kiyofumi; Yamaguchi, Tetsuji; Araya, Fumimasa

2006-03-01

The Japan Atomic Energy Research Institute (JAERI), one of the predecessors of the Japan Atomic Energy Agency (JAEA), had conducted nuclear safety research primarily at the Nuclear Safety Research Center in close cooperation with the related departments in accordance with the Long Term Plan for Development and Utilization of Nuclear Energy and Five-Years Program for Safety Research issued by the Japanese government. The fields of conducting safety research at JAERI were the engineering safety of nuclear power plants and nuclear fuel cycle facilities, and radioactive waste management as well as advanced technology for safety improvement or assessment. Also, JAERI had conducted international collaboration to share the information on common global issues of nuclear safety and to supplement own research. Moreover, when accidents occurred at nuclear facilities, JAERI had taken a responsible role by providing experts in assistance to conducting accident investigations or emergency responses by the government or local government. These nuclear safety research and technical assistance to the government have been taken over as an important role by JAEA. This report summarizes the nuclear safety research activities of JAERI from April 2003 through September 2005 and utilized facilities. (author)

Plan and progress of a cooperative research program on field migration test between CIRP and JAERI

International Nuclear Information System (INIS)

Li Shushen; Wang Zhiming; Li Zhentang

1999-01-01

As the main parts of a cooperative research project on safety assessment method for shallow land disposal of low level radioactive wastes between the China Institute for radiation Protection (CIRP) and the Japan Atomic Energy Research Institute (JAERI), field migration tests investigating the migration of radionuclides 90 Sr, 237 Np and 238 Pu and stable elements Sr, Ce, and Nd in both aerated zone and aquifer are carried out. 3 H and Br are used as tracers to obtain the water flow velocity in the aquifer and the movement of moisture water in the aerated zone for radioactive and non-radioactive tests, respectively. The aerated zone migration tests are carried out with media including soil, bentonite, cement block and mortar in both natural rainfall condition and artificial rainfall condition. The aquifer migration tests are carried out with assemblies (Type I), experimental frame (Type II) and injection tube (Type III), respectively, in and Underground Research Facility (URF). The aerated zone migration tests were started in May, 1997, while the aquifer migration tests started in August 1997. (author)

Proceedings of the seminar on the joint research project between JAERI and Universities. 'Actinide researches for 21st century - fusion between chemistry and engineering'. August 20-21, 1999, Japan Atomic Energy Research Inst., Tokai, Japan

Energy Technology Data Exchange (ETDEWEB)

NONE

2000-06-01

The Seminar on the Joint Research Project between JAERI and Universities was held in Tokai, August 20-21, 1999, to discuss future perspectives of the actinide researches for the nuclear fuel cycle. The papers related to the Joint Research Project on the Backend Chemistry were presented and discussed. The present report complies the papers contributed to the Seminar. (author)

Establishment of Japan Atomic Energy Agency and strategy for nuclear non-proliferation studies

International Nuclear Information System (INIS)

Senzaki, Masao; Kurasaki, Takaaki; Inoue, Naoko

2005-01-01

Japan Atomic Energy Agency (JAEA) was established on October 1, 2005, after the merger of Japan Atomic Energy Research Institute and Japan Nuclear Cycle Development Institute. JAEA is the only governmental nuclear research and development institute in Japan. It will engage in research activities ranging from basic research to practical applications in the nuclear field and will operate research laboratories, reactors, a reprocessing plant and a fuel fabrication plant. At the same time, the Nuclear Nonproliferation Science and Technology Center (NPSTC) was also established inside of JAEA to conduct the studies on the strategy for nuclear nonproliferation studies. Five roles that JAEA should play for nuclear nonproliferation were identified and four offices were established in the center to carry out those five roles effectively. To conduct the research and development for nuclear nonproliferation efficiently, the center aims to be a 'Research Hub' based on Partnership' with other organizations. (author)

Thermal-hydraulic design of cross-flow type mercury target for JAERI/KEK joint project

International Nuclear Information System (INIS)

Kaminaga, Masanori; Terada, Atsuhiko; Haga, Katsuhiro; Kinoshita, Hidetaka; Hino, Ryutaro

2001-01-01

The Japan Atomic Energy Research Institute (JAERI) and the High Energy Accelerator Research Organization (KEK) are promoting a plan to construct a neutron scattering facility. In the facility, 1 MW pulsed proton beam from a high-intensity proton accelerator will be injected into a mercury target in order to produce high-intensity neutrons for use in the fields of life and material sciences. In the spallation mercury target system design, an integrated structure of target vessel with a safety hull was proposed to ensure the safety and to collect mercury in case of mercury leakage caused by the target beam window failure. The inner structure arrangement of the mercury target vessel was determined based on the thermal hydraulic analytical results of 3 GeV, 1 MW proton beam injection. The safety hull consists of vessels for helium and heavy water. The vessels for mercury target, helium and heavy water will be connected each other by reinforcement ribs mounted on the surface of each vessel. From the structural analyses, the structural integrity of the safety hull would be maintained under the static pressure of 0.5 MPa. (author)

Present state of tandem superconductive booster of JAERI

Energy Technology Data Exchange (ETDEWEB)

Takeuchi, Suehiro; Matsuda, Makoto; Kanazawa, Shuhei; Yoshida, Tadashi; Ouchi, Isao; Shoji, Tokio [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1996-12-01

The superconductive booster constructed rear-stage accelerator of the tandem accelerator of the Tokai Research Establishment, JAERI (Japan Atomic Energy Research Institute), was completed in construction of its whole system on October, 1993, and through its beam accelerating test and remodulation its design characteristics were established on September, 1994. From November, 1994 to April, 1995 a repulsion-forming nuclear isolation apparatus was installed to modulate at target room, and was begun to use on June, 1995. The beam reaccelerated at the booster was used mainly for nuclear spectroscopy experiment, a collaborative research was developed using mini-crystal balls made by collecting from University of Tsukuba and so forth. The accelerating part of the booster is a phase independent setting type Linac consisting of 40 niobium superconducting holes with 1/4 wave-length type and 130 MHz in frequency, in which a hole can form 5 MV/m of accelerating electric field for 4 W of radio frequency spent power of 0.75 MV of accelerating voltage per hole, to form 30 MV of voltage in a whole. 4 holes are contained into each 10 cryostats, respectively. In accelerating tests, Si, Cl, Ni, Ge, Ag, I and Au ions are accelerated to establish 30 mV of total accelerating voltage in its design value, which reaches to their expected energy characteristics. Its used days in this year are 25 days after beginning of its use, and operating days of the cooling apparatus was 135 days in total. (G.K.)

US-Japan Workshop on atomic-collision data for fusion

International Nuclear Information System (INIS)

Crandall, D.H.; Hafford, P.M.; Itikawa, Y.

1981-04-01

This report, containing abstracts of each of the presentations and discussions, includes: brief talks on the applications of atomic data in tokamaks and in inertial confinement; reviews of the specific atomic collisions projects for fusion in Japan and the United States; discussions of how the data centers operate and manner of exchanging data; brief reviews of the status of electron-ion scattering and ion-atom scattering; discussions of criteria to be used in evaluating and selecting both experimental and theoretical data in these two areas; comparisons of data selected for each of six specific collision reactions which were evaluated by both groups prior to the workshop; brief reviews of activities in the related areas of atomic structure and plasma wall interactions; and a decision to pursue a joint or collaborative compilation of recommended cross sections for oxygen ions for electron impact excitation and electron capture from atomic hydrogen

Technical publications by JAERI staff in 1999, vol. 33

International Nuclear Information System (INIS)

2000-06-01

This list contains 1399 references of JAERI technical reports and JAERI personnel's papers in journals and other publications in 1999. A bibliographic description for each entry consists of title, language, author(s) and source. While JAERI technical reports are sorted by report number, papers-in-journals are arranged by the first author. The personal author index, corporate author index and report number index are included. (author)

Technical publications by JAERI staff in 2000, vol. 34

International Nuclear Information System (INIS)

2001-04-01

This list contains 830 references of JAERI technical reports and JAERI personnel's papers in journals and other publications in 2000. A bibliographic description for each entry consists of title, language, author(s) and source. While JAERI technical reports are sorted by report number, papers-in-journals are arranged by the first author. The personal author index, corporate author index and report number index are included. (author)

Treatment of radioactive wastes

International Nuclear Information System (INIS)

Machida, Chuji

1976-01-01

Japan Atomic Energy Research Institute (JAERI) is equipped with such atomic energy facilities as a power test reactor, four research reactors, a hot laboratory, and radioisotope-producing factory. All the radioactive wastes but gas generated from these facilities are treated by the waste treatment facilities established in JAERI. The wastes carried into JAERI through Japan Radioisotope Association are also treated there. Low level water solution is treated with an evaporating apparatus, an ion-exchange apparatus, and a cohesive precipitating apparatus, while medium level solution is treated with an evaporating apparatus, and low level combustible solid is treated with an incinerating apparatus. These treated wastes and sludges are mixed with Portland cement in drum cans to solidify, and stored in a concrete pit. The correct classification and its indication as well as the proper packing for the wastes are earnestly demanded by the treatment facilities. (Kobatake, H.)

On the merger between Toshiba Corporation and Japan Atomic Energy Operation Co., Ltd. (reply report)

International Nuclear Information System (INIS)

1990-01-01

The Nuclear Safety Commission made a careful examination regarding the merger between Toshiba Corporation and Japan Atomic Energy Operation Co., Ltd., (an issue submitted on August 16, 1989, for deliberation), and submitted a report to the prime minister. A study was carried out to determine whether the technical expertise possessed by Japan Atomic Energy Operation Co. would taken over properly by Toshiba Corporation, which would continue to exist after the merger. Results of the study revealed that the organization and technical experts existing at Japan Atomic Energy Operation Co. before the merger would properly incorporated into the existing system in Toshiba Corporation. Thus, it was confirmed that Toshiba Corporation after the merger would have technical capabilities required to install and operate nuclear reactors. The Atomic Nuclear Safety Commission started the above-mentioned study on the subject matter at the 32nd meeting, which was held on August 24, 1989, and reached the conclusion at the 34th meeting held on August 31, 1989. (N.K.)

Manual on JSSL (JAERI scientific subroutine library)

International Nuclear Information System (INIS)

Fujimura, Toichiro; Nishida, Takahiko; Asai, Kiyoshi

1977-05-01

A manual on the revised JAERI scientific subroutine library is presented. The library is a collection of subroutines developed or modified in JAERI which complements the library installed for FACOM 230-75 computer. It is subject to further extension in the future, since the present one is still insufficient for scientific calculations. (auth.)

Technical publications by JAERI staff in 1997, vol. 31

International Nuclear Information System (INIS)

1998-06-01

This list contains 998 references published as JAERI technical reports and selected from JAERI personnel's paper in journals and other publications in 1997. A bibliographic description for each entry consists of title, language, author(s) and source. While JAERI technical reports are sorted by report number, papers-in-journals are arranged by the first author. The personal author index, corporate author index and report number index are included. (author). 998 refs

Technical publications by JAERI staff in 1998, vol. 32

International Nuclear Information System (INIS)

1999-06-01

This list contains 1074 references of JAERI technical reports and JAERI personnel's papers in journals and other publications in 1998. A bibliographic description for each entry consists of title, language, author(s) and source. While JAERI technical reports are sorted by report number, papers-in-journals are arranged by the first author. The personal author index, corporate author index and report number index are included. (author). 1074 refs

White paper on atomic energy, for 1974 and 1975. [Japan

Energy Technology Data Exchange (ETDEWEB)

1975-09-01

Nearly 20 years have passed since the initiation of peaceful uses of atomic energy in Japan. Close to the end of this period, there occurred the so-called oil crisis, which emphasized the need for nuclear power development. Meanwhile, voices of the people in Japan are varied concerning nuclear power, as in siting of the power plants and the n.s. (nuclear ship) Mutsu. The paper describes the following: safety, environmental protection, nuclear power generation, nuclear fuel cycle, fission reactor and fusion reactor development, nuclear-powered ships, and radiation utilization.

Methodology of safety assessment for radioactive waste disposal

International Nuclear Information System (INIS)

Matsuzuru, Hideo; Kimura, Hideo

1991-01-01

The Japan Atomic Energy Research Institute (JAERI) is conducting an extensive R and D program to develop a safety assessment methodology to evaluate environmental consequences associated with geological disposal of a high-level radioactive waste, and also to elucidate a generic feasibility of the geological disposal in Japan. The paper describes the current R and D activities in the JAERI to develop an interim version of the methodology based on a normal evolution scenario, and also to validate models used in the methodology. (author)

Manual on JSSL (JAERI scientific subroutine library)

International Nuclear Information System (INIS)

Fujimura, Toichiro; Nishida, Takahiko; Asai, Kiyoshi

1979-11-01

A manual on the revised version of JAERI scientific subroutine library is presented. The library is a collection of subroutines developed or modified in JAERI. They are classified into fifteen fields. It is subject to further extension in the future, since there are some fields still insufficient for scientific calculations in the present library. (author)

Development of Cyclotron Beam Technology for Applications in Materials Science and Biotechnology at JAERI-TIARA

International Nuclear Information System (INIS)

Ohara, Y.; Arakawa, K.; Fukuda, M.; Kamiya, T.; Kurashima, S.; Nakamura, Y.; Okumura, S.; Saidoh, M.; Tajima, S.

2003-01-01

Recent progress of cyclotron ion beam development for applications in materials science and biotechnology at the ion-irradiation research facility TIARA of the Japan Atomic Energy Research Institute(JAERI) is overviewed. The AVF cyclotron in TIARA can accelerate protons and heavy ions up to 90 MeV and 27.5 MeV/n, respectively. In order to conform to the requirement of a reliable tuning of microbeam formation, the cyclotron beam current has been stabilized by controlling the temperature of the magnet yoke and pole within +/-0.5 deg. and hence by decreasing the variation of the magnetic field ΔB/B below 10-5. A heavy ion microbeam with energy of hundreds MeV is a significantly useful probe for researches on biofunctional elucidation in biotechnology. Production of the microbeam with spot size as small as 1μm by quadrupole lenses requires the energy spread of the beam ΔE/E < 2 x 10-4. In order to minimize the energy spread of the cyclotron beam, the fifth-harmonic voltage waveform has been successfully superposed on the fundamental one to make energy gain uniform

The Japan white book about nuclear energy

International Nuclear Information System (INIS)

1997-01-01

We find here a partial translation of the white book on nuclear energy published by Japan. In this document are the following themes: the safety of nuclear energy, research and development (JAERI), international cooperation, financing distribution, administrative chart of principal authorities and state agencies, budget for 1996 of nuclear energy and situation of the Japanese nuclear park. (N.C.)

Japan Sea expeditions for studies on water circulation and transport processes of radionuclides

International Nuclear Information System (INIS)

Togawa, Orihiko; Ito, Toshimichi; Kobayashi, Takuya; Otosaka, Shigeyoshi; Suzuki, Takashi

2006-02-01

The Japan Sea expeditions at the Japan Atomic Energy Agency (JAEA from October 1, 2005, former JAERI: Japan Atomic Energy Research Institute until September 30, 2005) were started on its participation in the first and second Japanese-Korean-Russian joint expeditions in 1994 and 1995 to investigate the situation on marine pollution due to radioactive wastes dumped in the Japan Sea and other seas around Japan. After the joint expeditions, JAEA continued to conduct the Japan Sea expeditions not only to monitor the impacts of radioactive wastes dumped in the Japan Sea, but also to investigate water circulation and the migration behavior of radionuclides in the Japan Sea. Taking account of some difficulties and constraints due to the political boundaries in the Japan Sea, the expeditions were carried out, separating the sea into two regions; one is the Japanese exclusive economical zone (EEZ) and the other is the Russian EEZ. The data of observations and measurements obtained in the two regions were analyzed together. The program of the Japan Sea expeditions included large-volume seawater sampling at different depths and seabed sediment sampling for measurements of representative anthropogenic radionuclides. To investigate the migration behavior of the radionuclides more in detail, associated oceanographic observations were also implemented; CTD/MBS (conductivity-temperature-depth meter with multi-bottle sampler) casts, analysis of dissolved oxygen and nutrients, deployment and recovery of mooring systems with current meters and sediment traps, and so on. Additional seawater samples were taken with CTD/MBS for further analysis on land. This report summarizes the results of the Japan Sea expeditions (Phase 1) conducted and/or jointed by JAEA from 1994 to 2002. First the report explains oceanographic features of the Japan Sea, main expeditions in the past and the summarized results of the Japanese-Korean-Russian joint expeditions. Then the report gives an outline of the

Status of reduced enrichment program for research reactors in Japan

International Nuclear Information System (INIS)

Kaieda, Keisuke; Baba, Osamu; Nagaoka, Yoshiharu; Kanda, Keiji; Nakagome, Yoshihiro

1999-01-01

The reduced enrichment programs for the JRR-3M, JRR-4 and JMTR of Japan Atomic Energy Research Institute (JAERI) have been completed. The KUR of Kyoto University Research Reactor Institute (KURRI) has been partially completed and is still in progress under the Joint Study Program with Argonne National Laboratory (ANL). The JRR-3M commenced using LEU silicide fuel elements instead of LEU aluminide fuel elements in September, 1999. The Japanese Government approved a cancellation of the KUHFR Project in February 1991, and April 1994 the U.S. Government gave an approval to utilize HEU fuel in the KUR instead of the KUHFR. Therefore, the KUR will be operated with HEU fuel until March 2004, then the full core conversion with LEU silicide will be done. The first shipment of spent fuels since 1974 was done in August, 1999. (author)

Activities of the nuclear emergency assistance and training center. Strengthening co-operation with parties in normal circumstances

International Nuclear Information System (INIS)

Watanabe, Fumitaka; Matsui, Tomoaki; Nomura, Tamotsu

2005-01-01

The Japan Nuclear Cycle Development Institute (JNC) and the Japan Atomic Energy Research Institute (JAERI) established the Nuclear Emergency Assistance and Training Center (NEAT) in March 2002. The center aims to provide various support nuclear safety regulatory bodies, local governments and nuclear facility licenses as specialists about nuclear and radiological issues according to the role shown in the Basic Disaster Management Plan. Upon a nuclear and/or radiological disaster occurring in Japan, NEAT will send specialists to the disaster scene, and offer the use of special equipments. NEAT maintains frequent contact with related organizations in normal circumstance. NEAT also participates in nuclear emergency exercises instructed by the parties concerned, which has contributed to the brewing of mutual trust with related organizations. In October 2005, JNC and JAERI merged into a new organization named the Japan Atomic Energy Agency (JAEA). NEAT, as a section of the organization, continuously deals with nuclear emergencies. (author)

Design and safety features of commercial nuclear power plants in Japan, 1976 edition

International Nuclear Information System (INIS)

Izumi, Fumio; Harayama, Yasuo

1976-10-01

The December 1975 edition (JAERI-M 5959) contained design particulars and safety features of 20 commercial nuclear power plants in Japan as of December 1974. Subsequently new plants have been put into operation and some plants under construction have undergone design modifications. The present edition presents similar data of the commercial nuclear power plants in Japan up to June 1976, compiled by computer processing. (auth.)

History of the JAERI linac facility for 33 years

International Nuclear Information System (INIS)

Ohkubo, Makio; Mizumoto, Motoharu; Nakajima, Yutaka; Mashiko, Katsuo

1994-01-01

The JAERI electron linear accelerator will be shutdown and disassembled at the end of 1993. At the JAERI, a prototype 20 MeV linac was constructed at 1960, and was used for the neutron time-of-flight experiments and for the isotope productions. An upgraded 120 MeV linac was constructed at 1972, and was used for many fields of research works until 1993. History of the JAERI Linac and the results of the works made using these facilities are reviewed, and also R/D on the accelerator engineering are described briefly. (author)

Proceedings of the workshop on molten salts technology and computer simulation

Energy Technology Data Exchange (ETDEWEB)

Hayashi, Hirokazu; Minato, Kazuo [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2001-12-01

Applications of molten salts technology to separation and synthesis of materials have been studied eagerly, which would develop new fields of materials science. Research Group for Actinides Science, Department of Materials Science, Japan Atomic Energy Research Institute (JAERI), together with Reprocessing and Recycle Technology Division, Atomic Energy Society of Japan, organized the Workshop on Molten Salts Technology and Computer Simulation at Tokai Research Establishment, JAERI on July 18, 2001. In the workshop eleven lectures were made and lively discussions were there on the fundamentals and applications of the molten salts technology that covered the structure and basic properties of molten salts, the pyrochemical reprocessing technology and the relevant computer simulation. The 10 of the presented papers are indexed individually. (J.P.N.)

Forty years of nuclear manpower development activities in JAERI

International Nuclear Information System (INIS)

1998-01-01

The training institute which was founded in 1958 for training researchers and engineers in atomic energy field attained to 40 years in January, 1998. During this period, it has accomplished the main role of training atomic energy engineers in Japan, but meeting the needs of the age, international training has been held, and also internally, the seminars for general public were carried out. So far, more than 45,000 persons who have finished the training have taken active parts in various atomic energy fields in Japan and abroad. The change of the training institute from initial Radioisotope Training Institute and Nuclear Reactor Training Institute to present International Atomic Energy General Technical Center is briefed. As to the training in Japan, the training of radioisotope and radiation technicians is reported about the basic course, the special course and the designated short course. As to the training of atomic energy engineers, the courses related to nuclear reactor engineering, the special courses on health physics, radiation protection, nuclear fuel and radioactive waste management, and the development of training techniques are described. As to the training of general public, the lecture on disaster prevention and atomic energy experiment seminar are performed. International training and the technical interchange in Asia and Pacific regions are reported. (K.I.)

Design and fabrication of water control unit for IASCC irradiation test

International Nuclear Information System (INIS)

Mori, Yuichiro; Takeuchi, Yutaka; Matsunami, Kiyotaka; Kosaki, Kazuhiko; Suzuki, Tomio; Hayashi, Motomitsu; Ide, Kiyoshi

2004-01-01

In relation to the aging of LWR, the Irradiation Assisted Stress Corrosion Cracking (IASCC) has been regarded as a significant and urgent issue for the reliability of in-core components of LWR, therefore the irradiation research project which was planned by Nuclear and Industrial Safety Agency is now being done under the cooperation of Industry-Government-Academia such as Japan Nuclear Energy Safety Organization, Institute of Research and Innovation (IRI), Central Research Institute of Electric Power Industry, Japan Atomic Energy Research Institute (JAERI), power companies, makers of LWR, and universities. Then at Japan Material Testing Reactor (JMTR) of JAERI, the irradiation test of the material for BWR is being carried out. This paper describes the introduction about the Water Control Unit (WCU) for IASCC irradiation test. The WCU was designed and installed into JMTR by Kawasaki Heavy Industries, LTD, based on the order from JAERI, IRI, and so on. (author)

Commissioning of the JAERI free electron laser

International Nuclear Information System (INIS)

Minehara, E.J.; Nagai, R.; Sawamura, M.

1993-01-01

We have developed, and constructed a prototype for a quasi-cw, and high-average power free electron laser driven by a 15MeV superconducting rf linac at Tokai, JAERI. In designing a high power FEL, there are many available design options to generate the required power output. By applying the superconducting rf linac driver, some of the options relating to the FEL itself may be relaxed by transferring design difficulties to the driver. Because wall losses become minimal in the superconducting accelerator cavity, very long pulse or quasi-cw, and resultant high average power may be readily attained at the JAERI superconducting rf linac FEL. In 1992 Japanese fiscal year, we have successfully demonstrated better cryogenic (stand-by loss<3.5W at 4.5K) and accelerating fields' performances (Eacc=7-9.4MV/m and Q=1-2x10+9) of four JAERI superconducting accelerator modules, and installed them in the FEL accelerator vault. In 1993, Optical resonators and beam transport systems, which have been already assembled, are now under commissioning. A description and the latest results of the JAERI super-conducting rf linac FEL will be discussed in comparison with a normal-conducting one, and reported in the symposium. (author)

Research, development and experience of radioactive waste management in Japan

International Nuclear Information System (INIS)

Miyanaga, I.; Imai, K.; Araki, K.

1983-01-01

Research, development and experience of radioactive wastes are presented in this paper. A total of about 330,000 drums of conditioned radioactive wastes arising from nuclear power plants such as low- and intermediate-level wastes (LLW) have been stored on-site. LLW from research activities and alpha-contaminated wastes (α-wastes) from the PNC Post-Irradiation Examination Facility for Experimental FBR Spent Fuel and Material have also been conditioned and stored in JAERI. Pilot-scale plants have been developed by JAERI and Tokyo Electric Co. for both plastic immobilization and wet oxidation of organic wastes with Fe(II) - H 2 O 2 . For the treatment of α-wastes, techniques such as incineration, acid digestion, electroslag melting and solidification into ceramics have been developed and will be demonstrated in the PNC Pu-contaminated Waste Treatment Facility in 1983. The safety evaluation of LLW for ocean dumping has been carried out with high pressure leaching test apparatus by JAERI and in sea site tests including the recovery of cold samples. A test facility for shallow-land disposal will be constructed by 1983. About 120 tonnes of LWR spent fuels have been reprocessed at the PNC Reprocessing Plant at Tokai since 1977 and, as a result, approximately 110 m 3 of HLW have been generated and stored in tanks. R and D efforts on HLW management have been performed on the basis of the policy established by the Japan Atomic Energy Commission. Vitrification technology has been developed since 1976 in a combination of cold laboratory tests, cold engineering tests and hot laboratory tests. The Vitrification Pilot Plant is planned for construction in the late 1980s. Surveys of potential geological formations for disposal and the development of engineered barriers and of repository systems are under way in PNC

Report of the JAERI's Institution Evaluation Committee on general organizational managements

International Nuclear Information System (INIS)

1999-11-01

In accordance with the National Guidelines on the Method of Evaluation for Government R and D, the Institution Evaluation Committee of JAERI conducted the extensive review on overall aspects in the JAERI's organizational management, starting with the Committee Meeting held in December 1998. This report describes the results of the review on 'JAERI's organizational management in view of the National Guidelines', 'Summary of evaluation of R and D themes' and 'Recommendations by the Committee and its Members', The contents, reported to news agencies in March 1999, are also available in the JAERI's internet home page. (author)

Structural change of Japan's nuclear R and D organization

International Nuclear Information System (INIS)

Yoon, S. W.; Jeong, H. S.; Lee, T. Z.

2002-01-01

Recently Japanese government is performing a reform work in order to solve the problem involved the existing Special Public Institutions. As results to, JAERI and JNC will be merged into a new independent administrative institution which will be expected to Japan's nuclear policy effectively. Henceforth, government of Japan will establish the legislation and organizational structure until 2005. From the finding of this case study, we should make an effort in order to carry out Korea's nuclear R and D effectively for the strengthening of national competitive

Centralized environmental radiation monitoring system in JAERI

International Nuclear Information System (INIS)

Katagiri, H.; Kobalyashi, H.

1993-01-01

JAERI has continued the environmental radiation background survey and monitoring to ensure the safety of the peoples around the institute since one year before the first criticality of JRR-1 (Japan Research Reactor No.1) in August 1957. Air absorbed doses from β and γ radiation, α and β radioactivity in air and the radioactivities in environmental samples were the monitoring items. For the monitoring of β and γ radiation and α and β radioactivity in air, monitoring station and the centralized automatic environmental radiation monitoring system applying a computer were established as a new challenging monitoring system for nuclear facility, which was the first one not only in Japan but also in the would in 1960 and since then the system has been renewed two times (in 1973 and 1988) by introducing the latest technology in the fields of radiation detection and computer control at each stage. Present system renewed in 1988 was designed to prevent the interruption of monitoring due to computer troubles, communication troubles and power failures especially an instant voltage drop arisen from thunder by reflecting the experiences through the operation and maintenance of the former system. Dual telemeters whose power is constantly supplied via batteries (capable of 10 min monitoring after power failure) are equipped in the monitoring center to cope with telemeter troubles, which has operated successfully without any suspension being attributable to the power failures and telemeter troubles

Report on the progress of researches using JAERI facilities in common, fiscal 1979

International Nuclear Information System (INIS)

1980-01-01

The utilization of the facilities in the Japan Atomic Energy Research Institute in common in 1979 has finished in active state, and the results of the researches have reached the stage of publication. The subjects of the researches spread over wide fields, and in 1979 also, extremely diversified researches were carried out. In this report, these results were collected in one book, and it is desirable to utilize it actively. It is expected that the research activities using the JAERI facilities in common will be promoted more and more widely and powerfully, but there are many problems in the manpower, equipment, space and so on required for maintaining and promoting such activities, and it is necessary to improve and strengthen the environment of researches. The number of the research themes is 125. In the field of general researches, the researches on radio-chemistry, the utilization of radiation and the effects of irradiation were mostly carried out, while in cooperative researches, the researches were mainly concerned with nuclear reactor engineering and nuclear reactor materials. The total number of visitors was 3863. The facilities offered to the common utilization were JRR-2, JRR-3, JRR-4, Co-60 irradiation facility, hot laboratory, linear accelerator, No. 1 and No. 2 electron accelerators. The abstracts of the papers are reported. (Kako, I.)

Information Exchange of the Atomic Energy Society of Japan with Nuclear Societies Worldwide

International Nuclear Information System (INIS)

Masao Hori; Yasushi Tomita

2000-01-01

This paper describes committees of the Atomic Energy Society of Japan (AESJ) related to information exchange, AESJ publications, AESJ Internet applications, and means for future information exchange between nuclear societies

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

1982-12-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1981 through March 31, 1982. The latest report, for 1981, is JAERI-M 9856. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide, hydrogen and methane; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

The law for the Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

1977-01-01

The law establishes the Japan Atomic Energy Research Institute in accordance with the Basic Act on Atomic Energy as a government corporation for the purpose of promoting R and D and utilizations of atomic energy (first chapter). The second chapter concerns the directors, advisers and personnel of the institute, namely a chairman of the board of directors, a vice-chairman, directors not more than seven persons, and auditors not more than two persons. The chairman represents and supervises the intitute, whom the prime minister appoints with the agreement of Atomic Energy Commission. The vice-chairman and other directors are nominated by the chairman with the approval of the prime minister, while the auditors are appointed by the prime minister with the advice of the Atomic Energy Commission. Their terms of office are 4 years for directors and 2 years for auditors. The third chapter defines the scope of activities of the institute as follows: basic and applied researches on atomic energy; design, construction and operation of nuclear reactors; training of researchers and technicians; and import, production and distribution of radioisotopes. Those activities should be done in accordance with the basic development and utilization plans of atomic energy established by the prime minister with the determination of Atomic Energy Commission. The fourth chapter provides for the finance and accounting of the institute, and the fifth chapter requires the supervision of the institute by the prime minister. (Matsushima, A.)

Progress report on neutron scattering research. April 1, 2002 - March 31, 2003

International Nuclear Information System (INIS)

Koizumi, Satoshi; Matsuda, Masaaki; Kurihara, Kazuo

2004-03-01

This issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor JRR-3 during the period between April 1, 2002 and March 31, 2003. (author)

Activities of the research committee on thorium cycle in atomic energy society of Japan

International Nuclear Information System (INIS)

Hohki, Shiro

1985-01-01

In 1978 the Research Committee on Thorium Cycle was established as one of committees of the Atomic Energy Society of Japan, and the Committee published a report titled 'The Thorium Cycle - Present Status and Future Prospect' in October 1980 as a result of investigations on the status of the thoirum cycle in Japan as well as that in overseas. Based on this investigation, the Committee is intending to evaluate synthetically the thorium utilization in Japan under the prospect for the middle and long term by intensifying the activities of the Committee. Furthermore, from this viewpoint, the author supplements comments on following three points: (1) Reasons why the thorium utilization has not received positive evaluation in Japan; (2) Reasons why Japan has to pay attention to thorium; (3) How the technology on thorium should be developed in Japan. (author)

Progress report on neutron scattering research. April 1, 1999 - March 31, 2000

Energy Technology Data Exchange (ETDEWEB)

Fujiwara, Satoru; Aizawa, Kazuya; Katano, Susumu (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2001-03-01

This issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor (JRR-3M) during the period between April 1, 1999 and March 31, 2000. (author)

Progress report on neutron scattering research. April 1, 2000 - March 31, 2001

International Nuclear Information System (INIS)

Aizawa, Kazuya; Katano, Susumu; Koizumi, Satoshi

2002-03-01

This issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor (JRR-3M) during the period between April 1, 2000 and March 31, 2001. (author)

Progress report on neutron scattering research. April 1, 2001 - March 31, 2002

Energy Technology Data Exchange (ETDEWEB)

Katano, Susumu; Koizumi, Satoshi; Matsuda, Masaaki (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2002-11-01

This issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor JRR-3M during the period between April 1, 2001 and March 31, 2002. (author)

Application of fiber optic grating strain sensor for measurement of strain under irradiation environment

International Nuclear Information System (INIS)

Kaji, Y.; Matsui, Y.; Kita, S.; Ide, H.; Tsukada, T.; Tsuji, H.

2001-01-01

In Japan Atomic Energy Research Institute (JAERI), in-pile strain measurement techniques have been developed using Japan Materials Testing Reactor (JMTR). In order to evaluate the performance of fiber optic grating sensor under irradiation environment, heat-up and performance tests at elevated temperature before irradiation and in-pile tests were performed in JMTR. (author)

Progress of nuclear safety research, 1990

International Nuclear Information System (INIS)

1990-07-01

Since the Japan Atomic Energy Research Institute (JAERI) was founded as a nonprofit, general research and development organization for the peaceful use of nuclear energy, it has actively pursued the research and development of nuclear energy. Nuclear energy is the primary source of energy in Japan where energy resources are scarce. The safety research is recognized at JAERI as one of the important issues to be clarified, and the safety research on nuclear power generation, nuclear fuel cycle, waste management and environmental safety has been conducted systematically since 1973. As of the end of 1989, 38 reactors were in operation in Japan, and the nuclear electric power generated in 1988 reached 29 % of the total electric power generated. 50 years have passed since nuclear fission was discovered in 1939. The objective of the safety research at JAERI is to earn public support and trust for the use of nuclear energy. The overview of the safety research at JAERI, fuel behavior, reliability of reactor structures and components, reactor thermal-hydraulics during LOCA, safety assessment of nuclear power plants and nuclear fuel cycle facilities, radioactive waste management and environmental radioactivity are reported. (K.I.)

Proceedings of the 1st workshop on ion beam applied biology

International Nuclear Information System (INIS)

Shikazono, Naoya; Hase, Yoshihiro; Sakamoto, Ayako; Oono, Yutaka; Tanaka, Atsushi

2003-03-01

Application of ion beam-irradiation to biology has been undertaken in JAERI. To establish further development of the research by strengthening the industrial, governmental, and academic cooperation, to share the knowledge of the present status of the field with researchers outside JAERI, and to find out future plans, the 1st workshop on ion beam-applied biology was held. The theme of the workshop was on 'Development of breeding techniques using ion beam-irradiation'. This workshop was held by JAERI on November 19, 2002 under the joint auspices of Kanto·Kouetsu branch of Atomic Energy Society of Japan, Breeding Science Society of Japan, and Genetics Society of Japan. One hundred and thirty people participated in the workshop. Highly qualified presentations were given on irradiation techniques, on outcomes of research, and on novel varieties that had been put to practical use, which were the results obtained at the irradiation facilities of JAERI, RIKEN, and WERC. Many new plant resources are expected to be produced by ion beam irradiation, and application of new irradiation techniques, such as microbeams, would be useful in the near future. The 8 of the presented papers are indexed individually. (J.P.N)

Progress report on neutron scattering research (April 1, 1998 - March 31, 1999)

Energy Technology Data Exchange (ETDEWEB)

Suzuki, Jun-ichi; Fujiwara, Satoru; Aizawa, Kazuya [eds.] [Advanced Science Research Center (Tokai Site), Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)

2000-03-01

The present issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor (JRR-3M) during the period between April 1, 1998 and March 31, 1999. (author)

Few atom chemistry of the trans actinide element rutherfordium (Rf)

International Nuclear Information System (INIS)

Nagame, Y.

2002-01-01

Studies of chemical properties of the trans actinide elements - starting with element 104 (Rf) - offer the unique opportunity to obtain information about trends in the Periodic Table at the limits of nuclear stability and to assess the magnitude of the influence of relativistic effects on chemical properties. To explore experimentally the influence of relativistic effects of electron shell structure, we study the chemical properties of the trans actinide elements. So far, we have developed some experimental apparatuses for the study of chemical properties of the trans actinide elements: a beam-line safety system for the usage of the gas-jet coupled radioactive 248 Cm target chamber for the production of trans actinides, a rotating wheel catcher apparatus for the measurement of α particles and spontaneous fission decay of trans actinides and an automated rapid chemical separation apparatus based on high performance liquid chromatography. The trans actinide nuclide, the element 104, 261 Rf (t 1/2 = 78 s) has been successfully produced via the reactions of 248 Cm( 18 O,5n) at the JAERI (Japan Atomic Energy Research Institute) tandem accelerator. The evaluated production cross section was about 10 nb, indicating that the production rate was approximately 2 atoms per min. Because of the short half-life and the low production rate of Rf, each atom produced decays before a new atom is synthesized. It means that any chemistry to be performed must be done on an 'atom-at-a-time' basis. Therefore rapid, very efficient and selective chemical procedures are indispensable to isolate the desired trans actinide 261 Rf. To perform fast and repetitive ion-exchange separation of Rf, we have developed the apparatus AIDA (Automated Ion exchange separation system coupled with the Detection apparatus for Alpha spectroscopy). Recently, ion-exchange behavior of Rf in acidic solutions has been studied with AIDA, and the results indicate that anion-exchange behavior of Rf is quite similar

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, (17)

International Nuclear Information System (INIS)

1985-01-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1983 through March 31, 1984. The latest report, for 1983, is JAERI-M 83-199. Detailed descriptions of the activities are presented in the following subjects: studies on surface phenomena under electron and ion irradiations; polymerization under the irradiation of electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, (9)

International Nuclear Information System (INIS)

1976-09-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1975 through March 31, 1976. The latest report, for 1975, is JAERI-M 6260. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide and hydrogen; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and drafting. (auth.)

Development of superconducting cavities at JAERI

International Nuclear Information System (INIS)

Ouchi, N.

2001-01-01

Development of superconducting (SC) cavities is continued for the high intensity proton accelerator in JAERI. In FY-1999, we carried out R and D work; (1) 2nd vertical test of β=0.886 single-cell cavity, (2) vertical test for observation of Q-disease without heat treatment after electropolishing, (3) vertical test of β=0.5 5-cell cavity, (4) pretuning, surface treatment and vertical test of β=0.886 5-cell cavity, (5) pulsed operation of β=0.886 single-cell cavity in the vertical test to confirm the validity of a new model calculation. This paper describes the present status of the R and D work for the SC cavities in JAERI. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, (13)

International Nuclear Information System (INIS)

1980-11-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1979 through March 31, 1980. The latest report, for 1979, is JAERI-M 8569. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide, hydrogen and methane; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, 14

International Nuclear Information System (INIS)

1981-12-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1980 through March 31, 1981. The latest report, for 1980, is JAERI-M 9214. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide, hydrogen and methane; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

A system of nuclear material accountancy in the JAERI

International Nuclear Information System (INIS)

Kase, Toshio; Nishizawa, Satoshi; Takahashi, Yoshindo

1983-05-01

Pursuant to the domestic law and regulations revised in 1978 as to be conformed to the requirements specified in the Safeguards Agreement under the Non-Proliferation Treaty (NPT), the JAERI's system of nuclear material accountancy has been effectively developed. The system of accountancy in the JAERI is based on the information treatment by the computer. The data of nuclear material are retained batchwisely together with their complicate history reflected the inventory changes and other transactions. The reports represented these data are prepared and submitted to the IAEA through the Government every month. The inspections are frequently conducted to the JAERI to verify the material appeared in the reports. Item counting, item identification and non-destructive assay technique are brought to the verification. In some cases, seals of the Government and the IAEA are applied to the nuclear material at the inspections, as their containment measures. The surveillance camera is also installed in the facility to look whole view of reactor room and spent fuel pond. In this paper, the general safeguards application and its corresponding accountancy system on JAERI's nuclear facility are described. (author)

Information exchange of the Atomic Energy Society of Japan with nuclear societies worldwide

International Nuclear Information System (INIS)

Hori, Masao; Tomita, Yasushi

2000-01-01

The Atomic Energy Society of Japan (AESJ) exchanges information with nuclear societies worldwide by intersocietal communication through international councils of nuclear societies and through bilateral agreements between foreign societies and by such media as international meetings, publications, and Internet applications

Manual for JSSL (JAERI Scientific Subroutine Library)

International Nuclear Information System (INIS)

Fujimura, Toichiro; Tsutsui, Tsuneo

1991-09-01

JSSL (JAERI Scientific Subroutine Library) is a library of scientific subroutines developed or modified in JAERI. They are classified into sixteen fields (Special Functions, Linear Problems, Eigenvalue and Eigenvector Problems, Non Linear Problems, Mathematical Programming, Extreme Value Problems, Transformations, Functional Approximation Methods, Numerical Differential and Integral Methods, Numerical Differential and Integral Equations, Statistical Functions, Physical Problems, I/O Routines, Plotter Routines, Computer System Functions and Others). This report is the user manual for the revised version of JSSL which involves evaluated subroutines selected from the previous compilation of JSSL, applied in almost all the fields. (author)

JAERI Tandem annual report 1983

International Nuclear Information System (INIS)

Harada, Kichinosuke; Maruyama, Michio; Okashita, Hiroshi; Ozawa, Kunio; Shikazono, Naomoto; Tanaka, Shigeya

1984-07-01

This annual report describes research activities which have been performed with JAERI tandem accelerator from April 1, 1983 to March 31, 1984. Summary reports of 32 papers, publications, personnel and a list of co-operative reserches with universities are contained. (author)

JAERI tandem annual report, 1982

International Nuclear Information System (INIS)

Harada, Kichinosuke; Maruyama, Michio; Ozawa, Kunio; Shikazono, Naomoto; Tamura, Tsutomu; Tanaka, Shigeya

1983-06-01

This annual report describes research activities which have been performed with JAERI tandem accelerator from September 1, 1981 to March 31, 1983. Summary reports of 38 papers, publications, personnel and a list of co-operative researches with universities are contained. (author)

Data list of nuclear power plants in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Ito, Noboru; Higuchi, Suminori; Kobayashi, Kensuke; Tobioka, Toshiaki

1987-03-01

The PPD (Nuclear Power Plant Data Base) has been under development in JAERI since 1983 as a six-year program to provide useful information for reactor safety regulation and reactor safety research. Information source of the PPD is mainly based on SAR's (Safety Analysis Reports) of 35 nuclear power plants which are operating, under construction or under licensing review in Japan. The report BWR edition consists of several data lists stored in the PPD, concerning safety design such as performances, equipments and installations of 18 BWR plants in Japan. The informations are based on SAR Attachment Chapter 8 ''Nuclear Reactor Facility Safety Design''. (author)

Data list of nuclear power plants in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Horikami, Kunihiko; Kobayashi, Kensuke; Namatame, Ken.

1993-01-01

The development of the database called PPD (Nuclear Power Plant Database) has started in 1983 at JAERI as a six-year program to provide useful information for reactor safety regulation and reactor safety research. In 1988 the program has been accomplished, and since then the data in the database has been updating and adding. Information source of the PPD is based on SAR's (Safety Analysis Report) of 47 nuclear power plants which are operating, under construction or under licensing review in Japan. The report, BWR edition, consists of lists of major data stored in the PPD, relating to safety design of 25 BWR plants in Japan. (author)

Design activity of IHI on the experimental multipurpose high temperature gas-cooled reactor

International Nuclear Information System (INIS)

1978-01-01

With conspicuous interest and attention paid by iron and steel manufacturing industries, the development of the multipurpose high temperature gas-cooled reactor, namely the process heat reactor has been energetically discussed in Japan. The experimental multipurpose high temperature gas-cooled reactor, planned by JAERI (the Japan Atomic Energy Research Institute), is now at the end of the adjustment design stage and about to enter the system synthesizing design stage. The design of the JAERI reactor as a pilot plant for process heat reactors that make possible the direct use of the heat, produced in the reactor, for other industrial uses was started in 1969, and has undergone several revisions up to now. The criticality of the JAERI reactor is expected to be realized before 1985 according to the presently published program. IHI has engaged in the developing work of HTGR (high temperature gas-cooled reactor) including VHTR (very high temperature gas-cooled reactor) for over seven years, producing several achievements. IHI has also participated in the JAERI project since 1973 with some other companies concerned in this field. The design activity of IHI in the development of the JAERI reactor is briefly presented in this paper. (auth.)

LWR-plants. Their evolutionary progress in the last half-century. (4) The start of the nuclear power generation in Japan

International Nuclear Information System (INIS)

Ishikawa, Hiroshi

2008-01-01

Evolutionary progress of the LWR plants in the last half-century was reviewed in series. The start of the nuclear power generation in Japan was reviewed in this article. The Japan Atomic Energy Research Institute (JAERI) promoted nuclear power research and development and introduced the Japan Power Demonstration Reactor (JPDR)-a 12.5 MWe natural circulation BWR, which began operation in 1965. In 1969 its power uprate modifications to a forced circulation BWR (JPDR-II) began and attained operation in 1972. During 50% power test, primary coolant leakage was observed at reactor core spray pipes in 1972. In 1975 the operation resumed and faults observed at condenser tubes in 1976. Primary coolant leakage from in-core flux monitor guide tubes at the bottom of reactor pressure vessel in 1979 led to its permanent shutdown. The nuclear ship Mutsu was put into service in 1970 and during rising power test radiation leakage due to fast neutron streaming was observed in 1974. After modifications of shielding experimental voyage was made in 1991. The first commercial nuclear power reactor, Tokai-1-a 166 MWe gas-cooled (Magnox) reactor, began operation in 1966 and continued until 1998. The LWR plants became the mainstay in Japan. (T. Tanaka)

Status of JAERI tandem accelerator

Energy Technology Data Exchange (ETDEWEB)

Yoshida, Tadashi; Kanda, Susumu; Takeuchi, Suehiro [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment] (and others)

2001-02-01

JAERI Tandem Accelerator had been operated approximately 230 days in fiscal year of 1999. Meanwhile, we had three times of maintenance period with vent. Total operation-times were 5273 hours. We could not carry out the experiment using rare gas, due to malfunction of the RF power supply for the ECR ion source. The type of the RF power supply is peculiar and it is impossible to get spare parts for repair. We are now investigating the backup RF power supply. The power supply for the magnet became unstable due to degradation of insulation in the shunt resistance, which is used for feedback stabilization. Stability was recovered after cleaning. The acrylic resin shaft was cracked. This cracks have a potential for severe accidents. So far bearing of the shaft has no problem. The reason of cracks may be self-destruction by charge accumulation in the shaft. JAERI Tandem Accelerator is approximately 20 years old. There appear requirements on the higher ion currents for additional ion species. Therefore, authors are investigating cost effective improvement plans of RFQ (Radio Frequency Quadra-pole) and IH type accelerator based on KEK (High Energy Accelerator Research Organization) R and D. As a whole, maintenance services for the control system are increasing due to some changes of computer programs. There are some difficulties to keep skilled personnel for facilities operation. Authors are gradually increasing hired personnel with contract from 1993. However, loads for JAERI permanent staffs are still heavy. It takes much longer time to educate skilled persons especially for safety. (Y. Tanaka)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute (no.19)

International Nuclear Information System (INIS)

1987-03-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1985 through March 31, 1986. The latest report, for 1984, is JAERI-M 86-051. Detailed descriptions of the activities are presented in the following subjects: studies on surface phenomena under electron and ion irradiations; polymerization under the irradiation of electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, (no. 20)

International Nuclear Information System (INIS)

1989-01-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1986 through March 31, 1987. The latest report, for 1985, is JAERI-M 87-046. Detailed descriptions of the activities are presented in the following subjects: studies on surface phenomena under electron and ion irradiations; polymerization under the irradiation of electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute (no. 18)

International Nuclear Information System (INIS)

1986-03-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1984 through March 31, 1985. The latest report, for 1984, is JAERI-M 84-239. Detailed descriptions of the activities are presented in the following subjects: studies on surface phenomena under electron and ion irradiations; polymerization under the irradiation of electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, (no. 11)

International Nuclear Information System (INIS)

1978-10-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1977 through March 31, 1978. The latest report, for 1977, is JAERI-M 7355. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide and hydrogen; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, No. 10

International Nuclear Information System (INIS)

1977-10-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1976 through March 31, 1977. The latest report, for 1976, is JAERI-M 6702. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide and hydrogen; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (auth.)

An outcome of nuclear safety research in JAERI. Case study for LOCA, FP, criticality and reprocessing

International Nuclear Information System (INIS)

Yanagisawa, Kazuaki; Ito, Keishiro; Kawashima, Kei; Katsuki, Chisato; Shirabe, Masashi

2009-09-01

An outcome of nuclear safety research done by JAERI was case studied by the bibliometric method. (1) For LOCA (loss-of-coolant accident) a domestic share of JAERI in monoclinic research paper was 63% at the past (20) 1978-1982 but was decreased to 40% at the present 1998-2002. For co-authored papers a domestic share between JAERI and PS (public sectors) is almost zero at past (20) but increased to 4% at the present. Research cooperation is active between Tokyo University and JAERI or between JAERI and Nagoya University. (2) Project-type research is to have a large monopolization in papers and that of basic-type research is to have a large development of research networking (DRN). (3) For FP, a share of co-authored paper is high due to an enhanced cooperation among JAERI-PO (Public Organization)-PS. For criticality, research activity was enhanced after JCO accident, especially at NUCEF. (4) For reprocessing, PS had a monopolistic position with a domestic share of 71% and a share of JAERI was about 20%. (5) LOCA and RIA outputs born by NSR-JAERI coincided partly to those of the Safety Licensing Guidelines but a share of contribution done by JAERI was ambiguous due to the lack of necessary information. (author)

The 33 years of research reactors in JAERI

International Nuclear Information System (INIS)

1990-11-01

The development and utilization of atomic energy in Japan began with the installation of JRR-1 reactor which attained the criticality in August, 1957, thus the third fire was lighted for the first time in Japan. JRR-2 was constructed as a full scale versatile research reactor, which attained the criticality in October, 1960, and since 1962, it has accomplished the role of the reactor for joint utilization. JRR-3 is the first reactor made in Japan by concentrating Japanese technologies in it, to develop and improve Japanese atomic energy technology. It attained the criticality in September, 1962, and has been used as a versatile research reactor. In 1960, Research Reactor Management Department was founded. JRR-4 was constructed as the research reactor for shielding for developing a nuclear-powered ship, which attained the criticality in January, 1965. The first hot laboratory in Japan for carrying out the post-irradiation test on the fuel and materials irradiated in these research reactors was installed in 1961. The JRR-1 was stopped in September, 1968, and is used as the commemorative exhibition hall. The JRR-3 was reconstructed, and attained the criticality in March, 1990, using 20 % enriched uranium fuel. The course of the research reactors for 33 years is reported. (K.I.)

Conceptual design of SC magnet system for ITER, (5)

International Nuclear Information System (INIS)

Nakajima, Hideo; Nishi, Masataka; Yoshida, Kiyoshi; Tsuji, Hiroshi; Egusa, Shigenori; Seguchi, Tadao; Hagiwara, Miyuki; Kirk, M.A.; Birtcher, R.C.

1991-08-01

Japan Atomic Energy Research Institute (JAERI) has been developing a superconducting magnet system for a fusion reactor. One of the key items in developing the superconducting magnets is material development and evaluation. The data of superconducting materials, structural alloys, and non-metallic materials are generated to establish a material data base at JAERI. This report is prepared to provide available data generated by JAERI to designers of superconducting magnets throughout the world. The following review papers written for the International Thermonuclear Experimental Reactor (ITER) report on conceptual design of magnet system are combined here. I. Superconducting Material Data II. Mechanical Properties of the Japanese Cryogenic Steels (JCS) at Cryogenic Temperature III. Review of Radiation Degradation Studies at JAERI on Composite Organic Insulators Used in Fusion Magnets (author)

Manual for JSSL (JAERI scientific subroutine library)

International Nuclear Information System (INIS)

Inoue, Shuji; Fujimura, Toichiro; Tsutsui, Tsuneo; Nishida, Takahiko

1982-09-01

A manual on revised version of JAERI scientific subroutine library, which is a collection of scientific subroutines developed or modified in JAERI. They are classified into fifteen fields (Special Functions, Linear Problems, Eigenvalue and Eigen vector Problems, Non linear Problems, Mathematical Programming, Extreme Value Problems, Transformations, Functional Approximation Methods, Numerical Differential and Integral Methods, Numerical Differential and Integral Equations, Statistical Functions, Physical Problems, I/O Routines, Plotter Routines, Computer System Functions and Others). Main expansion of this version is in the fields of mathematical programming and statistical functions. The present library may be said to be a comprehensive compilation of scientific subroutines covering almost all the important fields. (author)

Annual report on major results and progress of Naka Fusion Research Establishment of JAERI from April 1 to September 30, 2005 and Fusion Research and Development Directorate of JAEA from October 1, 2005 to March 31, 2006

International Nuclear Information System (INIS)

Yoshida, Hidetoshi; Oasa, Kazumi; Hayashi, Takao; Nakamura, Hiroo; Ogawa, Hiroaki

2006-09-01

This annual report provides an overview of major results and progress on research and development (R and D) activities at Naka Fusion Research Establishment of Japan Atomic Energy Research Institute (JAERI) during the period from April 1 to September 30, 2005 and at Fusion Research and Development Directorate of Japan Atomic Energy Agency (JAEA) from October 1, 2005 to March 31, 2006, including those performed in collaboration with other research establishments of JAERI, research institutes, and universities. In JT-60, ferritic steel tiles (FSTs) were installed inside the vacuum vessel of JT-60U to reduce the toroidal field ripple. After the installation of FSTs, a high normalized beta plasma at β N ∼2.3 was sustained for 28.6s with ELMy H-mode confinement as required for an ITER hybrid operation scenario. National Centralized Tokamak was placed as the ITER satellite tokamak in collaboration with the EU fusion community, and the facility design was modified strongly in support of ITER. In theoretical and analytical researches, studies on H-mode confinement, ITB in reversed shear plasmas, aspect ratio effects on external MHD modes and magnetic island evolution in a rotating plasma were progressed. Progress was also made in the NEXT project in which the behaviors of collisionless MHD modes and the dynamics of zonal flows were simulated. In fusion reactor technologies, R and Ds for ITER and fusion DEMO plants have been carried out. For ITER, a steady state operation of the 170GHz gyrotron up to 1000 s with 0.2 MW was demonstrated. Also current density of the neutral beam injector has been extended to 134A/m 2 at 0.75MeV. In the ITER Test Blanket Module (TBM), designs of Water and Helium Cooled Solid Breeder TBMs and R and Ds of tritium breeder/multiplier materials were progressed. Tritium processing technology for breeding blankets was also progressed. For the DEMO reactors, high temperature superconductor such as Bi2212 has been examined. In plasma facing

Progress of JAERI neutron science project

International Nuclear Information System (INIS)

Oyama, Yukio

1999-01-01

Neutron Science Project was started at Japan Atomic Energy Research Institute since 1996 for promoting futuristic basic science and nuclear technology utilizing neutrons. For this purpose, research and developments of intense proton accelerator and spallation neutron target were initiated. The present paper describes the current status of such research and developments. (author)

Japanese contributions to the Japan-US workshop on blanket design/technology

International Nuclear Information System (INIS)

Tone, Tatsuzo; Seki, Yasushi; Minato, Akio; Kobayashi, Takeshi; Mori, Seiji; Kawasaki, Hiromitsu; Sumita, Kenji.

1983-02-01

This report describes Japanese papers presented at the Japan-US Workshop on Blanket Design/Technology which was held at Argonne National Laboratory, November 10 - 11, 1982. Overview of Fusion Experimental Reactor (FER), JAERI's activities related to first wall/blanket/shield, summary of FER blanket and its technology development issues and summary of activities at universities on fusion reactor blanket engineering are covered. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, No. 12

International Nuclear Information System (INIS)

1979-11-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1978 through March 31, 1979. The latest report, for 1978, is JAERI-M 7949. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide, hydrogen and methane; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute (no. 16)

International Nuclear Information System (INIS)

1983-11-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1982 through March 31, 1983. The latest report, for 1982, is JAERI-M 82-192. Detailed descriptions of the activities are presented in the following subjects: studies on reactions of carbon monoxide, water and methane; polymerization under the irradiation of high dose rate electron beams; modification of polymers, degradation, cross-linking, and grafting. (author)

Investigation of environmental radioactivity in waste dumping areas of the far eastern seas. JAERI's activities in the 1st Japanese-Korean-Russian joint expedition 1994

International Nuclear Information System (INIS)

Amano, Hikaru; Matsunaga, Takeshi; Yabuuchi, Noriaki.

1996-10-01

Large quantities of radioactive waste have been dumped in the Far Eastern Sea by the former USSR and Russia. In order to survey marine radioactive contamination in the Far Eastern Sea, the first Japanese-Korean-Russian joint expedition was conducted according to the governmental agreement. The joint expedition was conducted at the areas of the Russian radioactive waste dumping site from March 18 1994 to April 6, 1994. JAERI participated in this expedition according to the request from STA Japan, and conducted mainly on-board measurement of marine radioactivities. The results showed that the radionuclides concentrations in seawater and seabed sediment samples from the study site were not different from those in the western North Pacific. This report summarises JAERI's activities in the expedition. Final report by Japanese-Korean-Russian government and IAEA is annexed. (author)

An upgraded version of the nucleon meson transport code: NMTC/JAERI97

Energy Technology Data Exchange (ETDEWEB)

Takada, Hiroshi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Yoshizawa, Nobuaki; Kosako, Kazuaki; Ishibashi, Kenji

1998-02-01

The nucleon-meson transport code NMTC/JAERI is upgraded to NMTC/JAERI97 which has new features not only in physics model and nuclear data but also in computational procedure. NMTC/JAERI97 implements the following two new physics models: an intranuclear cascade model taking account of the in-medium nuclear effects and the preequilibrium calculation model based on the exciton one. For treating the nucleon transport process more accurately, the nucleon-nucleus cross sections are revised to those derived by the systematics of Pearlstein. Moreover, the level density parameter derived by Ignatyuk is included as a new option for particle evaporation calculation. Other than those physical aspects, a new geometry package based on the Combinatorial Geometry with multi-array system and the importance sampling technique are implemented in the code. Tally function is also employed for obtaining such physical quantities as neutron energy spectra, heat deposition and nuclide yield without editing a history file. The resultant NMTC/JAERI97 is tuned to be executed on the UNIX system. This paper explains about the function, physics models and geometry model adopted in NMTC/JAERI97 and guides how to use the code. (author)

Proceedings of the 8th topical meeting on nuclear code development

International Nuclear Information System (INIS)

1993-03-01

The 8th Topical Meeting on Nuclear Code Development, organized by Committee on Reactor Physics and Nuclear Codes Committee of Japan Atomic Energy Research Institute (JAERI), was held at Tokai Research Establishment of JAERI, on 11th and 12th of November, 1992. In the meeting, 14 papers were presented on the topics of (1) the next generation nuclear reactor design system and (2) advances of the nuclear fuel reprocessing safety analysis codes. These papers are compiled in this proceedings. (author)

US/JAERI calculational benchmarks for nuclear data and codes intercomparison. Article 8

International Nuclear Information System (INIS)

Youssef, M.Z.; Jung, J.; Sawan, M.E.; Nakagawa, M.; Mori, T.; Kosako, K.

1986-01-01

Prior to analyzing the integral experiments performed at the FNS facility at JAERI, both US and JAERI's analysts have agreed upon four calculational benchmark problems proposed by JAERI to intercompare results based on various codes and data base used independently by both countries. To compare codes the same data base is used (ENDF/B-IV). To compare nuclear data libraries, common codes were applied. Some of the benchmarks chosen were geometrically simple and consisted of a single material to clearly identify sources of discrepancies and thus help in analysing the integral experiments

Proceedings of the joint meeting of ultrafast pulse high intensity laser research collaboration and JAEA-KPSI 7th symposium on advanced photon research

International Nuclear Information System (INIS)

2007-03-01

The Joint Meeting of Ultrafast Pulse High Intensity Laser Research Collaboration and JAEA-KPSI 7th Symposium on Advanced Photon Research was jointly held at Kansai Photon Research Institute, Japan Atomic Energy Agency (JAEA-KPSI) in Kizu, Kyoto on May 10-12, 2006. This report consists of contributed papers for the speeches and poster presentations including joint research and cooperative research performed in FY2004 and FY2005 with Japan Atomic Energy Research Institute (JAERI). The 47 of the presented papers are indexed individually. (J.P.N.)

RIKEN-JAERI 8-GeV synchrotron radiation project - SPring-8

International Nuclear Information System (INIS)

Awaya, Yohko

1990-01-01

The plan of an 8-GeV synchrotron radiation facility, which is called SPring-8 (Super Photon Ring-8GeV), had been proposed by Science and Technology Agency (STA) in Japan and it was decided that its construction would be started from April 1990. An atomic physics group in Japan had the first meeting in December 1988 to discuss the future studies of atomic physics and related problems at SPring-8 and plans of research and development (R and D) for them. Their report was published in May 1990. In this report, an outline of SPring-8 is described. Results of the discussions of Japanese working group of atomic physics and the present status of R and D of this group will be presented by M. Kimura in this workshop

The JAERI superconducting RF linac-based FELS and THEIR cryogenics

International Nuclear Information System (INIS)

Minehara, Eisuke J.

2003-01-01

In the 21st century, we need a powerful and efficient free-electron laser (FEL) for academic and industrial uses in almost all fields. In order to realize such a tunable, highly-efficient, high average power, high peak power and ultra-short pulse FEL, the JAERI FEL group and I have developed an industrial FEL driven by a compact, stand-alone and zero-boil off super-conducting rf linac with an energy-recovery geometry. Our discussions on the JAERI FEL and cryogenics will cover market-requirements for the industrial FELs, some answers from the JAERI compact, stand-alone and zero-boil off cryostat concept and operational experiences over these 9 years, our discovery of the new, highly-efficient, high-power, and ultra-short pulse lasing mode, and the energy-recovery geometry. (author)

Ending the War against Japan: Science, Morality, and the Atomic Bomb. Choices for the 21st Century.

Science.gov (United States)

Bakker, Don

This unit presents students with dilemmas faced by U.S. policymakers with three distinct options for U.S. policy toward Japan. Background readings provide students with information on the U.S. decision to drop the atomic bomb on Japan in 1945. By exploring a spectrum of alternatives, students gain a deeper understanding of the values underlying…

Preparation and certification of a uranium isotope certified reference material JAERI-U5

International Nuclear Information System (INIS)

Tamura, Shuzo; Hashitani, Hiroshi

1982-06-01

The Committee on Analytical Chemistry of Nuclear Fuels and Reactor Materials, JAERI had planned to prepare a new reference material, JAERI-U5 for uranium isotopic measurement since 1978. The reference material is composed of 6 samples of different enrichment in the range of 0.2 to 4.5 wt. percents of 235 U. The preparation includes dissolution of raw materials, blending of solutions, precipitation of ammonium diuranate, drying and ignition to U 3 O 8 . A mass-spectrometric collaborative analysis was carried out by well-trained two laboratories in this country, JAERI and PNC. The certified values were decided from the result of the collaborative work. As the measurements were based on NBS SRM's, JAERI-U5 should be called tertiary standard. The materials are packed in bottles of low-potassium-content glass for a possible use in non-destructive gamma-rays spectrometry. The reference material has been distributing from JAERI with a price of yen 140,000 per set (6 samples of 2 g of each) since 1979. (author)

Human resource development in the beginning phase of nuclear technology development in Japan

International Nuclear Information System (INIS)

Yamashita, Kiyonobu

2015-01-01

Japan Research Reactor No.1 (JRR-1) was constructed as the first nuclear reactor in Japan and reached the first criticality in 1957. The construction of both the first BWR and the first PWR were started in the same year 1967 and they started power operation in the same year 1970. Engineers of electrical utilities and vendors gave efforts to have knowledge for reactor engineering mainly on the job training with high self-motivation to contribute for nuclear technology development. A part of them participated in the reactor engineering training course of the JAERI. (author)

Nuclear regulatory guides for LWR (PWR) fuel in Japan and some related safety research

International Nuclear Information System (INIS)

Ichikawa, M.

1994-01-01

The general aspects of licensing procedure for NPPs in Japan and regulatory guides are described. The expert committee reports closely related to PWR fuel are reviewed. Some major results of reactor safety research experiments at NSPR (Nuclear Safety Research Reactor of JAERI) used for establishment of related guide, are discussed. It is pointed out that the reactor safety research in Japan supports the regularity activities by establishing and revising guides and preparing the necessary regulatory data as well as improving nuclear safety. 10 figs., 4 refs

Nuclear regulatory guides for LWR (PWR) fuel in Japan and some related safety research

Energy Technology Data Exchange (ETDEWEB)

Ichikawa, M [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)

1994-12-31

The general aspects of licensing procedure for NPPs in Japan and regulatory guides are described. The expert committee reports closely related to PWR fuel are reviewed. Some major results of reactor safety research experiments at NSPR (Nuclear Safety Research Reactor of JAERI) used for establishment of related guide, are discussed. It is pointed out that the reactor safety research in Japan supports the regularity activities by establishing and revising guides and preparing the necessary regulatory data as well as improving nuclear safety. 10 figs., 4 refs.

Progress report on neutron scattering research (April 1, 1997 - March 31, 1998)

Energy Technology Data Exchange (ETDEWEB)

Suzuki, Jun-ichi; Fujiwara, Satoru; Aizawa, Kazuya [eds.

1999-02-01

The present issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor (JRR-3M) during the period between April 1, 1997 and March 31, 1998. The 76 papers are indexed individually. (J.P.N.)

Report of the summative evaluation by the advisory committee on fusion research and development

International Nuclear Information System (INIS)

2005-03-01

The Research Evaluation Committee of the Japan Atomic Energy Research Institute (JAERI) set up an Advisory Committee on Fusion Research and Development in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations. The Advisory Committee on Fusion Research and Development evaluated the adequacy of the plans of fusion research and development to be succeeded from JAERI to a new research institute which will be established by integration of JAERI and the Japan Nuclear Cycle Development Institute (JNC). The Advisory Committee consisted of eight specialists from outside the JAERI conducted its activities from June 2004 to August 2004. The evaluation was performed on the basis of the materials submitted in advance and of the oral presentations made at the Advisory Committee meeting which was held on July 23, 2004, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Advisory Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on December 1, 2004. This report describes the result of the evaluation by the Advisory Committee on Fusion Research and Development. (author)

Report of the summative evaluation by the advisory committee on research and development of nuclear energy technology

International Nuclear Information System (INIS)

2005-03-01

The Research Evaluation Committee of the Japan Atomic Energy Research Institute (JAERI) set up an advisory Committee on Research and Development of Nuclear Energy Technology in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations. The Advisory Committee on Research and Development of Nuclear Energy Technology evaluated the adequacy of the plans of safety research to be succeeded from JAERI to a new research institute which will be established by integration of JAERI and the Japan Nuclear Cycle Development Institute (JNC). The Advisory Committee consisted of nine specialists from outside the JAERI conducted its activities from July 2004 to August 2004. The evaluation was performed on the basis of the materials submitted in advance and of the oral presentations made at the Advisory Committee meeting which was held on August 10, 2004, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Advisory Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on December 1, 2004. This report describes the result of the evaluation by the Advisory Committee on Research and Development on Nuclear Energy Technology. (author)

Report of the summative evaluation by the advisory committee on nuclear safety research

International Nuclear Information System (INIS)

2005-03-01

The Research Evaluation Committee of the Japan Atomic Energy Research Institute (JAERI) set up an Advisory Committee on Nuclear Safety Research in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations. The Advisory Committee on Nuclear Safety Research evaluated the adequacy of the plans of nuclear safety research to be succeeded from JAERI to a new research institute which will be established by integration of JAERI and the Japan Nuclear Cycle Development Institute (JNC). The Advisory Committee consisted of eight specialists from outside the JAERI conducted its activities from June 2004 to August 2004. The evaluation was performed on the basis of the materials submitted in advanced and of the oral presentations made at the Advisory Committee meeting which was held on July 27, 2004, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Advisory Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on December 1, 2004. This report describes the result of the evaluation by the Advisory Committee on Safety Research. (author)

Report of the summative evaluation by the advisory committee on research support and collaborative activities

International Nuclear Information System (INIS)

2005-03-01

The Research Evaluation Committee of the Japan Atomic Energy Research Institute (JAERI) set up an Advisory Committee on Research Support and Collaborative Activities in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations. The Advisory Committee on Research Support and Collaborative Activities evaluated the adequacy of the plans of research support and collaborative activities to be succeeded from JAERI to a new research institute which will be established by integration of JAERI and the Japan Nuclear Cycle Development Institute (JNC). The Advisory Committee consisted of nine specialists from outside the JAERI conducted its activities from June 2004 to August 2004. The evaluation was performed on the basis of the materials submitted in advance and of the oral presentations made at the Advisory Committee meeting which was held on July 21, 2004, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Advisory Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on December 1, 2004. This report describes the result of the evaluation by the Advisory Committee on Research Support and Collaborative Activities. (author)

Report of the summative evaluation by the advisory committee on research for radiation applications

International Nuclear Information System (INIS)

2005-03-01

The Research Evaluation Committee of the Japan Atomic Energy Research Institute (JAERI) set up an Advisory Committee on Research for Radiation Applications in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations. The Advisory Committee on Research for Radiation Applications evaluated the adequacy of the plans of research for radiation applications to be succeeded from JAERI to a new research institute which will be established by integration of JAERI and the Japan Nuclear Cycle Development Institute (JNC). The Advisory Committee consisted of nine specialists from outside the JAERI conducted its activities from June 2004 to August 2004. The evaluation was performed on the basis of the materials submitted in advanced and of the oral presentations made at the Advisory Committee meeting which was held on July 29, 2004, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Advisory Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on December 1, 2004. This report describes the result of the evaluation by the Advisory Committee on Research for Radiation Applications. (author)

Standards for transport and storage components established by The Atomic Energy Society of Japan and The Japan Society of Mechanical Engineers

International Nuclear Information System (INIS)

Hirose, M.; Aritomi, M.; Saegusa, T.; Hayashi, T.; Takeda, T.; Onishi, K.; Kawakami, K.

2004-01-01

Since June 1997 the standards/specifications and inspection/certification of various products in Japan have been reviewed by Ministries and Agencies, with the aim of reducing direct government intervention to a necessary minimum and creating a free and fair socio-economic system that is fully opened to the international community and based on the rules of self-responsibility and market principles. Reflecting this policy the administrative regulations which prescribe technical standards as specific requirements have been revised by degrees into performance prescriptions. Detailed provisions in ordinances and notices have been abolished gradually to utilize voluntary standards and rules. In the nuclear energy field voluntary standards are being developed to make up statutory performance requirements by the Atomic Energy Society of Japan (AESJ) and the Japan Society of Mechanical Engineers (JSME) together with other organizations such as the Japan Electric Association, the Thermal and Nuclear Power Engineering Society. These voluntary standards and rules by these organizations have been established in order to maintain openness, transparency, fairness, professionalism and promptness and to promote development and globalization

Proceedings of 2012 JAEA/KAERI joint seminar on advanced irradiation and PIE technologies

International Nuclear Information System (INIS)

Ishihara, Masahiro; Ishitsuka, Etsuo; Suzuki, Masahide

2012-12-01

Under the 'Arrangement for Corporation in the field of peaceful uses of Nuclear Energy between the Japan Atomic Energy Agency (JAEA) and the Korean Atomic Energy Research Institute (KAERI)', the 2012 JAEA/KAERI Joint Seminar on Advanced Irradiation and PIE (post-irradiation examination) Technologies has been held at Mito, Japan from March 28 to 30, 2012. This triennial seminar is the seventh in series of bilateral exchange of irradiation and PIE technologies and research reactor management. Since the first joint seminar on the PIE Technology between JAERI (Japan Atomic Energy Research Institute, former agency of JAEA) and KAERI was held at JAERI Oarai Research Institute, Japan in 1992, the international cooperation program between JAEA and KAERI has been actively carried out in the field of neutron irradiation. At the fifth seminar in 2005 and sixth in 2008, the irradiation technology and the research reactor management fields were included, respectively, to the joint seminar, and it covers whole areas of irradiation using research reactors. In this seminar total 37 presentations were made in three technical sessions, which are 'research reactor management', 'advanced irradiation technology' and 'post-irradiation examination technology', and active information exchange was done among participants. Papers or manuscripts presented in the 2012 JAEA/KAERI Joint Seminar on Advanced Irradiation and PIE Technologies are contained in the proceedings. (author)

Experiences with a Japanese-American fusion fuel processing hardware project

International Nuclear Information System (INIS)

Barnes, J.W.; Anderson, J.L.; Bartlit, J.R.; Carlson, R.V.; Konishi, S.; Inoue, M.; Naruse, Y.

1992-01-01

This paper reports that the United States Department of Energy (USDOE) and the Japan Atomic Energy Research Institute (JAERI) have installed a full-sale fuel cleanup system (JFCU) for testing at Los Alamos. The JFCU was designed by JAERI and built by Mitsubishi Heavy Industries (MHI) in Kobe, Japan. Experience gained by Japanese working at Los Alamos facilitated development of a system consistent with Los Alamos operations and standards. US or equivalent Japanese standards were generally used for design resulting in minor problems at electrical interfaces. Frequent written interchanges were essential to project success, as spoken communications can be misunderstood. Differing work styles required detailed pre-planning, separation of responsibilities, and daily scheduling meetings. Safety and operational documentation drafted by JAERI personnel was revised at Los Alamos to assure conformance with USDOE and Los Alamos standards. The project was successful because both Japanese and American participants worked hard to overcome potential problems. These experiences will be valuable in conducting future international fusion projects

Progress report on neutron scattering research (April 1, 1996 - March 31, 1997)

Energy Technology Data Exchange (ETDEWEB)

Ishii, Yoshinobu; Suzuki, Jun-ichi; Fujiwara, Satoru [eds.

1997-10-01

This issue summarizes research progress in neutron scattering at Japan Atomic Energy Research Institute (JAERI) by utilizing the research reactor (JRR-3M) mainly during the period between April 1, 1996 and March 31, 1997. The 57 of the presented papers are indexed individually. (J.P.N.)

Safety philosophy of gas turbine high temperature reactor (GTHTR300)

International Nuclear Information System (INIS)

Shoji Katanishi; Kazuhiko Kunitomi; Shusaku Shiozawa

2002-01-01

Japan Atomic Energy Research Institute (JAERI) has undertaken the study of an original design concept of gas turbine high temperature reactor, the GTHTR300. The general concept of this study is development of a greatly simplified design that leads to substantially reduced technical and cost requirements. Newly proposed design features enable the GTHTR300 to be an efficient and economically competitive reactor in 2010's. Also, the GTHTR300 fully takes advantage of its inherent safety characteristics. The safety philosophy of the GTHTR300 is developed based on the HTTR (High Temperature Engineering Test Reactor) of JAERI which is the first HTGR in Japan. Major features of the newly proposed safety philosophy for the GTHTR300 are described in this article. (authors)

Annual reports of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, (No. 23, 24, 25)

International Nuclear Information System (INIS)

1992-09-01

Research activities of Osaka Laboratory for Radiation Chemistry, JAERI during three year period from April 1, 1989 through March 31, 1992 are described. The latest report. for 1988, is JAERI-M 91-054. Detailed descriptions of the activities are presented in the following subjects: laser-induced organic synthesis, modification of polymer surface by laser irradiation, polymerization and modification of polymers by electron beam, and electron beam dosimetry. (author) 77 refs

A concept of JAERI passive safety light water reactor system (JPSR)

Energy Technology Data Exchange (ETDEWEB)

Murao, Y.; Araya, F.; Iwamura, T. [Japan Atomic Energy Research Institute, Tokai-mura (Japan)

1995-09-01

The Japan Atomic Energy Research Institute (JAERI) proposed a passive safety reactor system concept, JPSR, which was developed for reducing manpower in operation and maintenance and influence of human errors on reactor safety. In the concept the system was extremely simplified. The inherent matching nature of core generation and heat removal rate within a small volume change of the primary coolant is introduced by eliminating chemical shim and adopting in-vessel control rod drive mechanism units, a low power density core and once-through steam generators. In order to simplify the system, a large pressurizer, canned pumps, passive engineered-safety-features-system (residual heat removal system and coolant injection system) are adopted and the total system can be significantly simplified. The residual heat removal system is completely passively actuated in non-LOCAs and is also used for depressurization of the primary coolant system to actuate accumulators in small break LOCAs and reactor shutdown cooling system in normal operation. All of systems for nuclear steam supply system are built in the containment except for the air coolers as a the final heat sink of the passive residual heat removal system. Accordingly the reliability of the safety system and the normal operation system is improved, since most of residual heat removal system is always working and a heat sink for normal operation system is {open_quotes}safety class{close_quotes}. In the passive coolant injection system, depressurization of the primary cooling system by residual heat removal system initiates injection from accumulators designed for the MS-600 in medium pressure and initiates injection from the gravity driven coolant injection pool at low pressure. Analysis with RETRAN-02/MOD3 code demonstrated the capability of passive load-following, self-power-controllability, cooling and depressurization.

Current status of international cooperation on nuclear safety research

International Nuclear Information System (INIS)

Katsuragi, Satoru

1984-01-01

JAERI (Japan Atomic Energy Research Institute), as a representative organization in Japan, has been participating in many international cooperations on nuclear safety research. This report reviews the recent achievement and evolution of the international cooperative safety studies. Twelve projects that are based on the agreements between JAERI and foreign organizations are reviewed. As the fuel irradiation studies, the recent achievement of the OECD Halden Reactor Project and the agreement between Pacific Northwest Laboratories, Battelle Memorial Institute, and JAERI are explained. As for the study of reactivity accident, the cooperation of the NSRR (Nuclear Safety Research Reactor) project in Japan with PBF, PNS and PHEBUS projects in the U.S., West Germany and France, respectively, are now in progress. The fuel performance in abnormal transient and the experiment and analysis of severe fuel damage are the new areas of international interest. The OECD/LOFT project and ROSA-4 projects are also explained in connection with the FP source term problem and the analysis codes such as RELAP-5 and TRAC. As the safety studies associated with the downstream of the nuclear fuel cycle, the BEFAST project of IAEA and the ISIRS project of OECD/NEA are shortly reviewed. (Aoki, K.)

Analytical method and result of radiation exposure for depressurization accident of HTTR

International Nuclear Information System (INIS)

Sawa, K.; Shiozawa, S.; Mikami, H.

1990-01-01

The Japan Atomic Energy Research Institute (JAERI) is now proceeding with the construction design of the High Temperature Engineering Test Reactor (HTTR). Since the HTTR has some characteristics different from LWRs, analytical method of radiation exposure in accidents provided for LWRs can not be applied directly. This paper describes the analytical method of radiation exposure developed by JAERI for the depressurization accident, which is the severest accident in respect to radiation exposure among the design basis accidents of the HTTR. The result is also described in this paper

Inter-laboratory project q calibration of SANS instruments using silver behenate

International Nuclear Information System (INIS)

Ikram, Abarrul; Gunawan; Edy Giri, Putra; Suzuki, Jun-ichi; Knott, Robert

2000-01-01

The inter-laboratory project for q-calibration of SANS (small angle neutron scattering) using silver behenate was carried out among Indonesia National Nuclear Energy Agency (BATAN), Japan Atomic Energy Research Institute (JAERI) and Australian Nuclear Science and Technology Organization (ANSTO). The standard sample of silver behenate, [CH 3 (CH 2 ) 20 COOAg](AgBE), has been assessed as an international standard for the calibration of both x-ray and neutron scattering instruments. The results indicate excellent agreement for q calibration obtained among the three laboratories, BATAN, JAERI and ANSTO. (Y. Kazumata)

Evaluation of nuclear knowledge management: An outcome in JAERI

International Nuclear Information System (INIS)

Yanagisawa, K.

2006-01-01

The author performed an ex post evaluation on the nuclear research of JAERI and revealed that the national funds invested in this field were 4 b$. With aid of NKM, it was revealed that the total outcome was 6 b$, where the creation of nuclear markets for electricity and nuclear facilities was the main stream. This implies that the cost benefit effect is 6 b$/4 b$ = 1.5 (>1). From this, it can be concluded that JAERI contributes not only to technological promotion of nuclear activity but also to the increase of gross domestic product (GDP). (author)

Annual report of the Japan Atomic Energy Research Institute for fiscal 1992

International Nuclear Information System (INIS)

1993-01-01

Japan Atomic Energy Research Institute has promoted the research on high temperature engineering, the research and development of nuclear fusion, the research on radiation utilization and the research and development of nuclear powered ships as the advanced project researches which bring about the breakthrough of atomic energy technology as well as the research on the safety, following the long term plan of atomic energy development and utilization which was decided in 1987, as the general research institute in Japanese atomic energy field. The progress of the above mentioned researches in fiscal 1992 is reported. The operation of JRR-2, JRR-3M, JRR-4 and JMTR was carried out as scheduled. 9 cases of the medical irradiation on brain tumors were performed at JRR-2. As to the practical test of the disassembling of JPDR, the machinery and equipment in the reactor containment vessel were removed, and the development of a high performance decontamination testing device and others was advanced. The efficient operation of the large computer system, the production and sales of radioisotopes and radioactive waste business were continued. (K.I.)

Expectations of JAERI on INIS from a viewpoint of socio-economic evaluation

International Nuclear Information System (INIS)

Yanagisawa, K.; Takahashi, S.; Narita, O.; Yonezawa, M.

2004-01-01

Because the taxpayers funded basic scientific researches in JAERI, a feedback of the results to the public is strongly requested by the Japanese government. By using the concept of socio-economic effect, that is, the stimulation and promotion of social interrelations through a formation of networking in basic research, the authors tried to show a kind of feedback. For this purpose, JAERI developed computer code SOCIOECO combined with INIS was used as a main tool and database. The case study was addressed to the Material Science (MS) field in JAERI. It is revealed from the study that a significant formation and development of socio-economic networking is occurring at the emphasized basic research fields (EBRF) of ion irradiation and actinides having a strong relation to nuclear. For actinides a total of 7,237 papers were written in basic research fields, where the share of JAERI over 25 years was 25%, while 52% by public sectors (PS, namely university (U) and governmental sectors (GS)) and 17% by private organizations (PO). Numbers of co-written papers defined as an index of socio-economic networking were increased with time. The growth rate, for example, between JAERI and PS was of order of 3-4% per 25 years, while 8% per recent 5 years. The socio-economic networking described here seems to be useful for showing the feedback occurring from basic research to the public. (author)

Progress in radiation application to industry and agriculture

International Nuclear Information System (INIS)

Kume, Tamikazu

2006-01-01

Utilization of radiation in Japan has been actively promoted by various agencies including the Takasaki Radiation Chemistry Research Establishment of JAERI (presently Japan Atomic Energy Agency: JAEA). The JAEA-Takasaki was established in April 1963 for the purpose of promoting research and development (R and D) activities with gamma rays and electron beams. The JAEA-Takasaki's activities were addressed principally to industry and agriculture. In Japan, purpose of utilization of radiation is aiming at increasing welfare and quality of life of our peoples. (author)

Present status of HTGR research and development

International Nuclear Information System (INIS)

1992-08-01

This report briefly describes the progress of the construction of the High Temperature Engineering Test Reactor (HTTR), Research and Development (R and D) on the advanced technologies for the High Temperature Gas-cooled Reactors (HTGRs) and international cooperation in the Japan Atomic Energy Research Institute (JAERI) in 1991. (J.P.N.)

Proceedings of the 1991 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Baba, Mamoru [Tokyo Univ. (Japan); Nakagawa, Tsuneo [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Japanese Nuclear Data Committee

1992-03-15

The 1991 Symposium on Nuclear data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 28th and 29th of November 1991. This symposium was organized by Japanese Nuclear Data Committee and Nuclear Data Center, JAERI. In the oral session, presented were 15 papers on nuclear data activities in Thailand, status reviews of JENDL-3 and its special purpose files, OMEGA program and ESNIT promoted by JAERI and related nuclear data, reviews of nuclear theories, nuclear data in the intermediate energy region, topics on knowledge technology and reactor physics. In the poster session, twenty-three papers were presented, which were related to nuclear data measurements, benchmark tests of evaluated data and evaluation. All of the 38 papers are compiled in the proceedings.

Fusion energy 1998. Proceedings. V. 1-4

International Nuclear Information System (INIS)

1999-01-01

The 17-th International Atomic Energy Agency (IAEA) Fusion Energy Conference was held in Yokohama, Japan, 19-24 October 1999. This 6-day conference, which was attended by 835 participants from over 30 countries and two international organizations was organized by the IAEA in co-operation with the Japan Atomic Energy Research Institute (JAERI). More than 360 papers plus 5 summary talks were presented in 23 oral and 8 poster sessions on magnetic confinement and experiments, inertial fusion energy, plasma heating and current drive, ITER engineering design activities, magnetic confinement theory, innovative concepts and fusion technology

BEATRIX-II Program, January 1989--December 1989: ANNEX-III to IEA implementing agreement for a programme of research and development on radiation damage in fusion materials

International Nuclear Information System (INIS)

Slagle, O.D.; Hollenberg, G.W.

1990-10-01

BEATRIX-II is an International Energy Agency (IEA) sponsored collaborative experiment among Japan, Canada, and the United States. The purpose of the experiment is to evaluate the performance of ceramic solid breeder materials in a fast neutron environment. To do this, an in-situ tritium recovery experiment is being conducted in the Fast Flux Test Facility (FFTF), located on the Hanford site near Richland, Washington, and operated by Westinghouse Hanford Company (WHC). The Pacific Northwest Laboratory (PNL), Richland, Washington, together with the Japan Atomic Energy Research Institute (JAERI) and Atomic Energy of Canada Limited (AECL) are responsible for conducting the experiment

Fusion energy 1998. Proceedings. V. 1-4

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-12-01

The 17-th International Atomic Energy Agency (IAEA) Fusion Energy Conference was held in Yokohama, Japan, 19-24 October 1999. This 6-day conference, which was attended by 835 participants from over 30 countries and two international organizations was organized by the IAEA in co-operation with the Japan Atomic Energy Research Institute (JAERI). More than 360 papers plus 5 summary talks were presented in 23 oral and 8 poster sessions on magnetic confinement and experiments, inertial fusion energy, plasma heating and current drive, ITER engineering design activities, magnetic confinement theory, innovative concepts and fusion technology.

Utilization of nuclear power in oceans and its perspective

International Nuclear Information System (INIS)

Yamaji, Akio

2000-01-01

Since 1959, Russia retains many nuclear icebreakers and has a plan to construct two new types of nuclear icebreakers. In Japan, research for advanced marine reactors and its fundamental studies are being conducted by the Japan Atomic Energy Research Institute (JAERI), the Ship Research Institute (SRI) and universities. The advanced marine reactor MRX designed by JAERI is a lightweight and compact integral PWR with a passive decay heat removal system. The Shipbuilding Research Association of Japan (JSRA) and the Japan Atomic Industrial Forum (JAIF) took a survey of the future nuclear ships and conducted an investigation of the total system related to the operation of nuclear ships, respectively, commissioned by JAERI. The committee of JSRA has recommended the displacement type of a large high-speed container ship promises to act as the next generation nuclear merchant ship. In the committee of JAIF, the cost evaluation has been made for a high-speed, large container ship equipped with two MRXs sailing the Pacific Ocean, and it is found that it could have an advantage economically over the diesel in some future conditions. The committee of JSRA has also recommended the deep-sea research vessel has been identified as a promising form for the next generation nuclear special-purpose ship, since the deep-sea represents a vast frontier in terms of basic scientific understanding of the earth. Many countries including Russia, Japan and U.S.A. are conducting a research of reactors for deep-sea vessels. The U.S. Navy made available nuclear powered submarines for civilian oceanographic research and the submarines were used in the Scientific Ice Expedition (SCICEX) program from 1995 to 1999. For floating nuclear power plant, the design of nuclear co-generation plant Pevek' for remote regions of Russia is completed using KLT-40C, based on a marine reactor. In Japan, fundamental studies of floating plants are being performed by private companies and JAERI. The designs of floating

Utilization of nuclear power in oceans and its perspective

Energy Technology Data Exchange (ETDEWEB)

Yamaji, Akio [Ship Research Institute, Ministry of Transport, Mitaka, Tokyo (Japan)

2000-03-01

Since 1959, Russia retains many nuclear icebreakers and has a plan to construct two new types of nuclear icebreakers. In Japan, research for advanced marine reactors and its fundamental studies are being conducted by the Japan Atomic Energy Research Institute (JAERI), the Ship Research Institute (SRI) and universities. The advanced marine reactor MRX designed by JAERI is a lightweight and compact integral PWR with a passive decay heat removal system. The Shipbuilding Research Association of Japan (JSRA) and the Japan Atomic Industrial Forum (JAIF) took a survey of the future nuclear ships and conducted an investigation of the total system related to the operation of nuclear ships, respectively, commissioned by JAERI. The committee of JSRA has recommended the displacement type of a large high-speed container ship promises to act as the next generation nuclear merchant ship. In the committee of JAIF, the cost evaluation has been made for a high-speed, large container ship equipped with two MRXs sailing the Pacific Ocean, and it is found that it could have an advantage economically over the diesel in some future conditions. The committee of JSRA has also recommended the deep-sea research vessel has been identified as a promising form for the next generation nuclear special-purpose ship, since the deep-sea represents a vast frontier in terms of basic scientific understanding of the earth. Many countries including Russia, Japan and U.S.A. are conducting a research of reactors for deep-sea vessels. The U.S. Navy made available nuclear powered submarines for civilian oceanographic research and the submarines were used in the Scientific Ice Expedition (SCICEX) program from 1995 to 1999. For floating nuclear power plant, the design of nuclear co-generation plant Pevek' for remote regions of Russia is completed using KLT-40C, based on a marine reactor. In Japan, fundamental studies of floating plants are being performed by private companies and JAERI. The designs of

Concurrent control system for the JAERI tandem accelerator

International Nuclear Information System (INIS)

Hanashima, Susumu; Shozi, Tokio; Shiozaki, Yasuo; Saito, Motoi; Oogane, Yasuo; Sekiguchi, Satoshi.

1994-01-01

A new control system for the JAERI tandem accelerator is constructed. The system utilizes concurrent processing technology with multiprocessor. Transputers are used both for central processor and I/O front end processors. (author)

Revised experimental program on the nuclear ship 'Mutsu'

International Nuclear Information System (INIS)

Mori, Yuichi

1985-01-01

The experimental program on the nuclear ship ''Mutsu'' has been revised by the Government. And, the responsible organization for n. s. Mutsu was turned to Japan Atomic Energy Research Institute (JAERI) from Japan Nuclear-ship Development Agency. The revised, new experimental program is as follows. (1) Experimental navigation of n. s. Mutsu is made with the already loaded 1st reactor core for about one year. (2) The mooring port for n. s. Mutsu is in a minimum scale. (3) Upon termination of the experimental navigation, n. s. Mutsu is immediately decommissioned. (4) Power-up test and experimental navigation of n. s. Mutsu are made in fiscal 1989 to 1990. The policy of research and development with n. s. Mutsu and the works assigned to JAERI with n. s. Mutsu are described. (Mori, K.)

Low-level radioactive wastes managements in universities, institutes and hospitals

International Nuclear Information System (INIS)

Kato, Sadatake

1979-01-01

Japan Radioisotope Association, which is distributing radioisotopes, also is collecting radioactive wastes from hospitals and other establishments using radioisotopes across the country. These wastes are then transferred to Japan Atomic Energy Research Institute for treatment. However, the capacity of JAERI is currently insufficient for the quantities transferred from JRA. A main cause for such difficulty as above is the increase in medical isotopes, i.e. radiopharmaceuticals, which are used in vivo and in vitro. From the RI consumptions thus far, the future demands and waste quantities are estimated for the purpose of establishing an overall joint treatment system. The following matters are described; the present situation of waste management in JRA and JAERI; current transitional phase; and radiopharmaceutical wastes (radiopharmaceuticals, their consumptions and future demands, and resultant waste RIs). (J.P.N.)

Present status and future directions of the JAERI superconducting RF linac-based FEL

International Nuclear Information System (INIS)

Minehara, EJ.; Yamauchi, T.; Sugimori, M.; Sawamura, M.; Hajima, R.; Nagai, R.; Kikuzawa, N.; Nishimori, N.; Shizuma, T.

2000-01-01

The JAERI superconducting rf linac based FEL has successfully been lased to produce a 2.34kW FEL light and l00kW electron beam output in quasi continuous wave operation in February 2000. Twice larger output than the present program goal of 1kW was achieved to improve the optical out coupling method in the FEL optical resonator, the electron gun, and the electron beam optics in the JAERI FEL driver. As our next 2 years program goal is the 100kW class FEL light and a few MW class electron beam output in average, quasi continuous wave operation of the light and electron beam will be planned in the JAERI superconducting rf linac based FEL facility. Conceptual and engineering design options needed for such a very high power operation will be discussed to improve and to upgrade the existing facility. Finally, several applications, table-top superconducting rf linac based FELs, and an X-ray FEL R and D will be discussed as a next-five years program at JAERI-FEL laboratory. (author)

JAERI R & D on accelerator-based transmutation under OMEGA program

Energy Technology Data Exchange (ETDEWEB)

Takizuka, T.; Nishida, T.; Mizumoto, M. [Japan Atomic Energy Research Institute, Ibaraki-ken (Japan)] [and others

1995-10-01

The overview of the Japanese long-term research and development program on nuclide partitioning and transmutation, called {open_quotes}OMEGA,{close_quotes} is presented. Under this national program, major R&D activities are being carried out at JAERI, PNC, and CRIEPI. Accelerator-based transmutation study at JAERI is focused on a dedicated transmutor with a subcritical actinide-fueled subcritical core coupled with a spallation target driven by a high intensity proton accelerator. Two types of system concept, solid system and molten-salt system, are discussed. The solid system consists of sodium-cooled tungsten target and metallic actinide fuel. The molten-salt system is fueled with molten actinide chloride that acts also as a target material. The proposed plant transmutes about 250 kg of minor actinide per year, and generates enough electricity to power its own accelerator. JAERI is proposing the development of an intense proton linear accelerator ETA with 1.5 GeV-10 mA beam for engineering tests of accelerator-based transmutation. Recent achievements in the accelerator development are described.

Technical publications by JAERI staff from January 1977 to December 1977

International Nuclear Information System (INIS)

1978-11-01

Approximately 430 journal articles, papers at meetings, reports and books are given, which have been published by personnel of JAERI from January 1977 to December 1977. The contents for each entry include the title, language in which it is written, author(s), and journal name or origin. They are presented in INIS subject categories. The indexes are both by authors and report number. A list of the patents, originating at JAERI, including both Japanese and other patents, is also given. (author)

Technical publications by JAERI staff from January 1976 to December 1976

International Nuclear Information System (INIS)

1977-11-01

Approximately 400 journal articles, papers at meetings, reports and books are given, which have been published by personnel of JAERI from January 1976 to December 1976. The contents for each entry include the title, language in which it is written, author(s), and journal name or origin. They are presented in INIS subject categories. The indexes are both by authors and report number. A list of the patents, originating at JAERI, including both Japanese and other patents, is also given. (auth.)

Technical publications by JAERI staff from January 1975 to December 1975

International Nuclear Information System (INIS)

1977-03-01

Approximately 400 journal articles, papers at meetings, reports and books are given, which have been published by personnel of JAERI from January 1975 to December 1975. The contents for each entry include the title, language in which it is written, author (s), and journal name or origin. They are presented in INIS subject categories. The indexes are both by authors and report number. A list of the patents, originating at JAERI, including both Japanese and other patents, is also given. (auth.)

Technical publications by JAERI staff from January 1974 to December 1974

International Nuclear Information System (INIS)

1975-03-01

Approximately 370 journal articles, papers at meetings, reports and books are given, which have been published by personnel of JAERI from January 1974 to December 1974. The contents for each entry include the title, language in which it is written, author(s), and journal name or origin. They are presented in INIS subject categories. The indexes are both by authors and report number. A list of the patents, originating at JAERI, including both Japanese and other patents, is also given. (auth.)

Citation analysis in JAERI

International Nuclear Information System (INIS)

Nakamoto, Hideshiro; Shimizu, Takehiro.

1982-01-01

For purposes of the acquisition strategy the citation statistics were investigated on the articles which were published by JAERI staff in 1976, '77 and '78. The citations of 14,769 listed in the off-prints of 1,300 were analized by types of Literature, publication year, scattering, and so on. The results show that the occupation of technical reports increased and the lifetime became longer compared with the results of fifteen years ago. The journal ranking list is the important material for the acquisition of journals in our library. (author)

Achievements of element technology development for breeding blanket

International Nuclear Information System (INIS)

Enoeda, Mikio

2005-03-01

Japan Atomic Energy Research Institute (JAERI) has been performing the development of breeding blanket for fusion power plant, as a leading institute of the development of solid breeder blankets, according to the long-term R and D program of the blanket development established by the Fusion Council of Japan in 1999. This report is an overview of development plan, achievements of element technology development and future prospect and plan of the development of the solid breeding blanket in JAERI. In this report, the mission of the blanket development activity in JAERI, key issues and roadmap of the blanket development have been clarified. Then, achievements of the element technology development were summarized and showed that the development has progressed to enter the engineering testing phase. The specific development target and plan were clarified with bright prospect. Realization of the engineering test phase R and D and completion of ITER test blanket module testing program, with universities/NIFS cooperation, are most important steps in the development of breeding blanket of fusion power demonstration plant. (author)

History of controlled nuclear fusion in Japan

International Nuclear Information System (INIS)

Uematsu, Eisui; Nishio, Shigeko; Takeda, Tatsuoki

2001-01-01

A research development of nuclear fusion was divided four periods: the first period as prehistory (until about 1955), the second period as begin of research (1955 to 1969), the third as the growth period (1970 to 1985) and the forth as the large tokamak age. In this paper I explained the second period, because general physicists and young plasma and controlled nuclear fusion researcher did not know about this period. The controlled nuclear fusion research was begun by the experiment of hydrogen bomb by USA and USSR in 1952 and 1953. In Japan, on the basis of many societies, 'The Controlled Nuclear Fusion Meeting' was established as an independent system and KAKEA (Journal of Fusion Research) was published in 1958. Japan government began to make the system by the Nuclear Commission in 1957. The main research devices in 1962 were linear pinch, mirror device, toroidal pinch, helical system, plasma gun and plasma measurement. USSR showed the excellent results of tokamak device in 1968. Ookawa spoke the effect of the average minimum-B, the best report in this period, at the second IAEA meeting, 1965. JAERI constructed JFT-1 and JFT-2, the latter was the first class device in the world and made the first step of Japanese research into the world, for examples, to attain the equilibrium of divertor plasma and to control impurity. Many research centers of controlled fusion were established in many universities in Japan from 1966 to 1980. Cooperation researchs between Japan and USA, USSR and many countries has been carried out after 1978: JIFT (Joint Institute for Fusion Theory) and FPPC (Fusion Power Coordinating Committee). The important results increased in this period. After 1985, the research activities are processing and data increased very fast depend on the larger devices and system, good measurement system and development of information system. JT-60 in JAERI opened to the large tokamak period. It led controlled fusion researchs in the world the same as TFTR (US

Report on progress of researches by common utilization of JAERI nuclear facilities, for fiscal 1988

International Nuclear Information System (INIS)

1989-01-01

In 1988, this system called 'Common utilization of JAERI facilities' so far was changed to 'Joint research utilizing JAERI facilities', and by evaluating more positively the function of the General Research Center for Nuclear Energy, it has been emphasized to promote and coordinate the joint research among universities centering around the utilization of JAERI facilities. The total number of the research subjects in fiscal year 1988 reached 138, but the results of 120 of them are collected in this book. General joint research is the standard form of the utilization of various facilities that JAERI has opened to common utilization. Cooperation research is to be carried out by concluding research cooperation contracts between university researchers and JAERI researchers, and the facilities which are not opened to common utilization can be used. In the general joint research, the utilization of irradiation such as activation analysis, radiochemistry, irradiation effect, neutron diffraction and so on and the research using beams are mostly carried out, but in the cooperation research, reactor engineering, reactor materials,, nuclear physics measurement and so on are the main subjects. The total number of visitors in one year was 3829 man-day. (K.I.)

Hematologic studies of irradiated survivors in Hiroshima, Japan. Refractory anemia occurring in survivors of the atomic bombing in Nagasaki, Japan

Energy Technology Data Exchange (ETDEWEB)

Yamasowa, Yoshimichi; Lange, R D; Wright, S W; Tomonaga, Masanobu; Kurasaki, Hirotami; Matsuoka, Shigeru; Matsunaga, Haruji

1959-01-01

This document contains 2 reports on the effects of radiation on the survivors of the atomic explosions in Hiroshima and Nagasaki. The first report is a hematologic survey conducted 33 to 44 months after the detonation of the atomic bomb in Hiroshima, Japan. The hematologic findings on a total of 824 survivors are compared with those on a control group of 1145 residents of Kure. Although statistical differences are apparent in the two groups, when one takes into account errors inherent in the hematologic methods themselves and differences in the possible incidence of parasitism and nutrition it would be unwarranted to attribute the slight changes found to radiation effect. The data presented here seem to indicate that radiation resulting from the explosion of the atomic bomb in Hiroshima, on August 6, 1945, has not significantly varied the hematologic values as analyzed in this report over a three-to four-year period. In the second report, the case histories of six Nagasaki atomic bomb survivors who developed refractory anemia are presented. Four of these individuals received undoubted radiation injury. The fact that refractory anemia may occur as a late manifestation of exposure to atomic radiation is pointed out. 15 references, 5 figures, 2 tables.

JAERI FEL applications in nuclear energy industries

International Nuclear Information System (INIS)

Minehara, Eisuke J.

2005-01-01

The JAERI FEL has first discovered the new FEL lasing of 255fs ultra fast pulse, 6-9% high efficiency, 1GW high peak power, a few kilowatts average power, and wide tunability of medium and far infrared wavelength regions at the same time. Using the new lasing and energy-recovery linac technology, we could extend a more powerful and more efficient free-electron laser (FEL) than 10kW and 25%, respectively, for nuclear energy industries, and others. In order to realize such a tunable, highly-efficient, high average power, high peak power and ultra-short pulse FEL, we need the efficient and powerful FEL driven by the JAERI compact, stand alone and zero boil-off super-conducting RF linac with an energy-recovery geometry. Our discussions on the FEL will cover the application of non-thermal peeling, cutting, and drilling to prevent cold-worked stress-corrosion cracking failures in nuclear energy and other heavy industries. (author)

JSPS-CAS Core University Program seminar. Proceedings of Japan-China joint seminar on atomic and molecular processes in plasma

Energy Technology Data Exchange (ETDEWEB)

Koike, Fumihiro [Kitasato Univ., Tokyo (Japan); Dong, Chenzhong [Northwest Normal Univ., Lanzhou (China)

2005-02-01

As one of the activities of JSPS-CAS Core University Program, Japan-China Joint Seminar on Atomic and Molecular Processes in Plasma was held on March 6 - 11, 2004 in Lanzhou, China. The total number of the officially registered participants was 29, in which 17 from Japan, 10 from China, and 2 from Germany. In the nuclear fusion plasma, there are quite a variety of atomic processes such as ionization, excitation, radiative recombination, non-radiative recombination (di-electronic recombination, collisional electron transfer), cascade radiation, and cascade Auger decay over the wide range of plasma temperature. The knowledge of such the processes is indispensable for the evaluation and improvement of the plasma properties, which is desirable to be investigated by international collaboration groups. The present Japan-China Joint Seminar constitutes one of such the activities to realize the above stated aim. The 21 of the presented papers are indexed individually. (J.P.N.)

Results of a survey on accident and safety analysis codes, benchmarks, verification and validation methods

International Nuclear Information System (INIS)

Lee, A.G.; Wilkin, G.B.

1996-03-01

During the 'Workshop on R and D needs' at the 3rd Meeting of the International Group on Research Reactors (IGORR-III), the participants agreed that it would be useful to compile a survey of the computer codes and nuclear data libraries used in accident and safety analyses for research reactors and the methods various organizations use to verify and validate their codes and libraries. Five organizations, Atomic Energy of Canada Limited (AECL, Canada), China Institute of Atomic Energy (CIAE, People's Republic of China), Japan Atomic Energy Research Institute (JAERI, Japan), Oak Ridge National Laboratories (ORNL, USA), and Siemens (Germany) responded to the survey. The results of the survey are compiled in this report. (author) 36 refs., 3 tabs

JAERI Material Performance Database (JMPD); outline of the system

International Nuclear Information System (INIS)

Yokoyama, Norio; Tsukada, Takashi; Nakajima, Hajime.

1991-01-01

JAERI Material Performance Database (JMPD) has been developed since 1986 in JAERI with a view to utilizing the various kinds of characteristic data of nuclear materials efficiently. Management system of relational database, PLANNER was employed and supporting systems for data retrieval and output were expanded. JMPD is currently serving the following data; (1) Data yielded from the research activities of JAERI including fatigue crack growth data of LWR pressure vessel materials as well as creep and fatigue data of the alloy developed for the High Temperature Gas-cooled Reactor (HTGR), Hastelloy XR. (2) Data of environmentally assisted cracking of LWR materials arranged by Electric power Research Institute (EPRI) including fatigue crack growth data (3000 tests), stress corrosion data (500 tests) and Slow Strain Rate Technique (SSRT) data (1000 tests). In order to improve user-friendliness of retrieval system, the menu selection type procedures have been developed where knowledge of system and data structures are not required for end-users. In addition a retrieval via database commands, Structured Query Language (SQL), is supported by the relational database management system. In JMPD the retrieved data can be processed readily through supporting systems for graphical and statistical analyses. The present report outlines JMPD and describes procedures for data retrieval and analyses by utilizing JMPD. (author)

Research and development of treatment techniques for LLW from decommissioning: Decontamination and volume reduction techniques

International Nuclear Information System (INIS)

Hirabayashi, T.; Kameo, Y.; Nakashio, N.

2001-01-01

For the purpose of reducing the amount and/or volume of low-level radioactive waste (LLW) arising from decommissioning of nuclear reactor, the Japan Atomic Energy Research Institute (JAERI) has been developing four decontamination techniques. They are: (a) Gas-carrying abrasive method, (b) In-situ remote electropolishing method for pipe system before dismantling, (c) Bead reaction - thermal shock method, and (d) Laser induced chemical method for components after dismantling. JAERI in developing techniques are also carrying out melting tests of metal and non-metal. Melting was confirmed to be effective in reducing the volume, homogenizing, and furthermore stabilizing non-metallic wastes. (author)

Proceedings of the 2002 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Ohsawa, Takaaki [Kinki Univ., Higashi-Osaka, Osaka (Japan); Fukahori, Tokio [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2003-06-01

The 2002 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 21st and 22nd of November 2002. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented were 18 papers on topics of release of JENDL-3.3, requests from users, status of FP nuclear data, international activities and other subjects. In the poster session, presented were 33 papers concerning experiments, evaluations, benchmark tests and on-line database on nuclear data. Those presented papers are compiled in the proceedings. (author)

Proceedings of the first internet symposium on nuclear data

International Nuclear Information System (INIS)

Fukahori, Tokio; Iwamoto, Osamu; Nakagawa, Tsuneo

1997-03-01

The First Internet Symposium on Nuclear Data (ISND-1) was held on the WWW home page of Nuclear Data Center at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), from April 8 to June 15, 1996. This symposium was organized by Japanese Nuclear Data Committee and Nuclear Data Center, JAERI and was the first trial to use 'Internet' for the symposium in a nuclear data field. In ISND-1, presented were 25 papers on various topics of nuclear data. Those presented papers are compiled in this proceedings as well as brief description about management of ISND-1. (author)

Proceedings of the first internet symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Fukahori, Tokio; Iwamoto, Osamu; Nakagawa, Tsuneo [eds.] [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1997-03-01

The First Internet Symposium on Nuclear Data (ISND-1) was held on the WWW home page of Nuclear Data Center at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), from April 8 to June 15, 1996. This symposium was organized by Japanese Nuclear Data Committee and Nuclear Data Center, JAERI and was the first trial to use `Internet` for the symposium in a nuclear data field. In ISND-1, presented were 25 papers on various topics of nuclear data. Those presented papers are compiled in this proceedings as well as brief description about management of ISND-1. (author)

Annual report on neutron scattering studies in JAERI

International Nuclear Information System (INIS)

Sato, Masatoshi; Nishi, Masakazu; Fujishita, Hideshi; Iizumi, Masashi

1982-07-01

Neutron scattering studies carried out from September 1979 to August 1981 by Division of Physics, JAERI, and universities with JRR-2 and -3 neutron beam facilities are described: 61 summary reports, and a list of publications. (author)

Analysis of Doppler effect with JAERI-Fast set

International Nuclear Information System (INIS)

Takano, Hideki; Matsui, Yasushi.

1977-07-01

Temperature dependence of group cross sections in the JAERI-Fast set versions I, IR, II and IIR has been tested from the analysis of Doppler experiments performed with two different methods. One is Doppler reactivity measurement for the whole core of SEFOR assembly, and the other sample Doppler reactivity measurement for natural UO 2 in FCA assemblies V-1, V-2, VI-1 and VI-2, ZPR-6-7, ZPR-3-47, and ZPPR-2 and 3. Doppler effects were calculated with one- and two-dimensional diffusion 1-st order perturbation code DOPP2D. The results calculated with the JAERI-Fast set versions II and IIR are in good agreement with the experimental ones. In these calculation, resonance heterogeneity effect, stainless-stell buffer effect and plate heterogeneity effect are considered, and these effects contribute significantly to Doppler effect. (auth.)

Control system for JAERI Free Electron Laser

International Nuclear Information System (INIS)

Sugimoto, Masayoshi

1992-01-01

A control system comprising of the personal computers network and the CAMAC stations for the JAERI Free Electron Laser is designed and is in the development stage. It controls the equipment and analyzes the electron and optical beam experiments. The concept and the prototype of the control system are described. (author)

Data list of nuclear power plants in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Morishima, Atsuyoshi; Suzuki, Motoe; Harayama, Yasuo

1980-07-01

this report has collected and compiled the data concerning performances, equipments and installations of the nuclear power plants constructed in Japan by December 1979. The data have been modified according to the changes produced after publication of 1978 edition (JAERI-M 8083), and extended to cover the new plants developed thereafter. All data have been processed and tabulated with a computer program FREP for the exclusive use of data processing. While this plant data list has been edited annually, there are increasing use of this in foreign countries; hence, a commentary in English on the usage has been presented in the Appendix. (author)

JAERI contribution to the 19th IAEA Fusion Energy Conference

International Nuclear Information System (INIS)

2003-03-01

This report compiles the contributed papers and presentation materials from JAERI to the 19th IAEA Fusion Energy Conference held at Lyon, France, from October 14th to 19th, 2002. The papers describe the recent progress in the experimental research in JT-60U and JFT-2M tokamaks, theoretical studies, fusion technology and R and D for ITER and fusion reactors. Total 32 papers consist of 1 overview talk, 14 oral and 17 poster presentations. Eight papers written by authors from other institutes and universities under collaboration with JAERI are also included. The 40 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the FNCA 2002 workshop on application of electron accelerator. Radiation system for liquid samples

International Nuclear Information System (INIS)

Yoshii, Fumio; Kume, Tamikazu

2003-10-01

'Forum for Nuclear Cooperation in Asia (FNCA) Workshop on Application of Electron Accelerator' was sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and hosted by Japan Atomic Energy Research Institute (JAERI) and Japan Atomic Industry Forum (JAIF). It was held at the Takasaki Radiation Chemistry Research Establishment (TRCRE), JAERI, Takasaki, Japan from 16 to 20 December 2002. The attendants at the workshop were consisted of 13 experts on application of electron accelerator from each of the participating countries, i.e., China, Indonesia, Korea, Malaysia, the Philippines, Thailand and Vietnam, and 40 participants from Japan. A total of 18 papers including invited papers on liquid waste treatment by electron beam, reviews of the radiation systems, and designing and cost analysis of EB irradiation system were presented. The major areas of interest of FNCA countries for cooperation were identified for application of low energy electron accelerator as liquid, thin film and granules. The gas and wastewater treatments were added to the above major areas. Based on the proposal from the participating countries, discussions were carried out to re-formulate the work plan of the project for three years until FY 2004. All manuscripts submitted by every speaker were included in the proceedings. The 17 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the FNCA workshop on application of electron accelerator

International Nuclear Information System (INIS)

Yoshii, Fumio; Kume, Tamikazu

2003-02-01

'Forum for Nuclear Cooperation in Asia (FNCA) Workshop on Application of Electron Accelerator' was sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and hosted by Japan Atomic Energy Research Institute (JAERI) and Japan Atomic Industry Forum (JAIF). It was held at the Takasaki Radiation Chemistry Research Establishment (TRCRE), JAERI, Takasaki, Japan from 28 January to 1 February, 2002. The Workshop was attended by experts on application of electron accelerator from each of the participating countries, i.e. China, Indonesia, Korea, Malaysia, The Philippines, Thailand and Vietnam and 16 participants from Japan. A total of 17 papers including invited papers on the current status of application of electron accelerator in the participating countries were presented. The characteristics of various kinds of electron accelerators were introduced. Current research and development on the utilization radiation processing for natural rubber latex, natural polymer solution, polymer films, sterilization of spices and seeds, radiation treatment of flue gases and dioxin in liquid, solid, and gases were reported. Based on the proposed needs from the participating countries, the work plan was discussed and agreed on application of electron accelerator for liquid and for solid (thin films and granules/powder). All manuscripts submitted by every speaker were included in the proceedings. The 16 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the FNCA workshop on application of electron accelerator

Energy Technology Data Exchange (ETDEWEB)

Yoshii, Fumio; Kume, Tamikazu (eds.) [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

2003-02-01

'Forum for Nuclear Cooperation in Asia (FNCA) Workshop on Application of Electron Accelerator' was sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and hosted by Japan Atomic Energy Research Institute (JAERI) and Japan Atomic Industry Forum (JAIF). It was held at the Takasaki Radiation Chemistry Research Establishment (TRCRE), JAERI, Takasaki, Japan from 28 January to 1 February, 2002. The Workshop was attended by experts on application of electron accelerator from each of the participating countries, i.e. China, Indonesia, Korea, Malaysia, The Philippines, Thailand and Vietnam and 16 participants from Japan. A total of 17 papers including invited papers on the current status of application of electron accelerator in the participating countries were presented. The characteristics of various kinds of electron accelerators were introduced. Current research and development on the utilization radiation processing for natural rubber latex, natural polymer solution, polymer films, sterilization of spices and seeds, radiation treatment of flue gases and dioxin in liquid, solid, and gases were reported. Based on the proposed needs from the participating countries, the work plan was discussed and agreed on application of electron accelerator for liquid and for solid (thin films and granules/powder). All manuscripts submitted by every speaker were included in the proceedings. The 16 of the presented papers are indexed individually. (J.P.N.)

The present status and development of the state's system of safeguards in Japan

International Nuclear Information System (INIS)

Kurihara, H.; Haginoya, T.; Natsume, H.; Hirata, M.

1977-01-01

This paper summarizes developmental activities aiming at improving, the status of the Japan's System of safeguards. The integral tests are described which are now being implemented by the Japanese Government to check the effectiveness of the State's System, which must be maintained by the Government under the Safeguards Agreement between Japan and the IAEA under the Treaty on Non-Proliferation of Nuclear Weapons, ratified by Japan in June 1976. A joint experiment has been now implemented by the Nuclear Safety Bureau and the NMCC for knowing and improving the precision and accuracy of analytical measurements used at the bulk-facilities. JAERI, is conducting various R and D work on its own, and through cooperation with NMCC, NSB etc. The authors describe the results of non-destructive γ-spectrometry for the development of isotopic correlation techniques, as well as for the identification, and also refer briefly to measurement methods using the Fast Critical Assembly in JAERI. Measurement methods used in the Pu-fabrication facility of the PNC, and the problem of spent fuels application of safeguards for the reprocessing plant are discussed. The accounting reports coming from Japanese facilities are processed by the computer at the NMCC, and converted into (a) the State's material balance, and (b) the formats to be sent to IAEA. The authors discuss the experience of such data-processing as well as the developmental works for analysing MUF. As a part of the integral test, the experiences concerning planning and performance of inspection are discussed. The present status and future plans of the system of national analytical laboratories are described

Modeling of fuel performance and fission product release behavior during HTTR normal operation. A comparative study of the FZJ and JAERI modeling approach

International Nuclear Information System (INIS)

Verfondern, Karl; Sumita, Junya; Ueta, Shohei; Sawa, Kazuhiro

2001-03-01

For the prediction of fuel performance and fission product release behavior in the High Temperature Engineering Test Reactor, HTTR of the Japan Atomic Energy Research Institute(JAERI), during its normal operation, calculation tools were applied as have been used at the Research Center Juelich (FZJ) in safety analyses for pebble-bed HTGR designs. Calculations were made assuming the HTTR operation with a nominal operation time of 660 efpd including a 110 efpd period with elevated fuel temperatures. Fuel performance calculations by the PANAMA code with given fuel temperature distribution in the core have shown that the additional failure level of about 5x10 -6 is expected which is about twice as much as the as-fabricated through-coatings failure level. Under the extreme safety design conditions, the predicted particle failure fraction in the core increases to about 1x10 -3 in maximum. The diffusive release of metallic fission products from the fuel primarily occurs in the core layer with the maximum fuel temperature (layer 3) whereas there is hardly any contribution from layer 1 except for the recoil fraction. Silver most easily escapes the fuel; the predicted release fractions from the fuel compacts are 10% (expected) and 50% (safety design). The figures for strontium (expected: 1.5x10 -3 ), safety design: 3.1x10 -2 ) and cesium (5.6x10 -4 , 2.9x10 -2 ) reveal as well a significant fraction to originate already from intact particles. Comparison with the calculation based on JAERI's diffusion model for cesium shows a good agreement for the release behavior from the particles. The differences in the results can be explained mainly by the different diffusion coefficients applied. The release into the coolant can not modelled because of the influence of the gap between compact and graphite sleeve lowering the release by a factor of 3 to 10. For the prediction of performance and fission product release behavior of advanced ZrC TRISO particles, more experimental work is

Proceedings of JAERI-JNC joint conference on nuclear safety research. March 7, 2003, Tokyo

International Nuclear Information System (INIS)

Sugimoto, Jun; Anoda, Yoshinari; Araya, Fumimasa; Yamaguchi, Toshio

2003-08-01

The JAERI-JNC Joint Conference on Nuclear Safety Research was held on March 7, 2003 in Tokyo with 188 participants, ahead of planned unification of JAERI and JNC in 2005. The objectives of the conference are to present recent results of safety research conducted in both institutes in accordance with the Five-Year Safety Research Plan by the Nuclear Safety Commission (NSC), and to reflect suggestions from the participants for future research program. Prof. Matsubara, Vice Chairperson of NSC, first presented a special lecture entitled 'Expectation on Future Nuclear Safety Research in Japan'. Twelve papers were then presented on the overview of research results and those of individual research activities in the fields of nuclear facilities, radioactive waste and environmental radioactivity. In the final session, a panel discussion was conducted with a title of 'Expectation on Future Nuclear Safety Research' chaired by Prof. Kimura, Chairperson of Special Committee on Nuclear Safety Research under NSC. Through the presentations and discussions, consensus has almost been obtained among participants for several key issues on safety research to be conducted by a unified new organization, such as giving priority to safety research as one of major missions, assurance of independence of safety research with the governmental funds, assurance of transparency of the planning process of safety research, separation and harmonization between safety research and developmental research, importance of maintaining fundamental research and research facilities, promotion of cooperation with relevant organizations considering the needs from industries, and importance of dissemination of research results and personnel training. The present report compiles the summaries of special lecture, papers, questions and comments, panel discussions, and OHPs presented in the conference. (author)

Present and future status of distributed database for nuclear materials (Data-Free-Way)

International Nuclear Information System (INIS)

Fujita, Mitsutane; Xu, Yibin; Kaji, Yoshiyuki; Tsukada, Takashi

2004-01-01

Data-Free-Way (DFW) is a distributed database for nuclear materials. DFW has been developed by three organizations such as National Institute for Materials Science (NIMS), Japan Atomic Energy Research Institute (JAERI) and Japan Nuclear Cycle Development Institute (JNC) since 1990. Each organization constructs each materials database in the strongest field and the member of three organizations can use these databases by internet. Construction of DFW, stored data, outline of knowledge data system, data manufacturing of knowledge note, activities of three organizations are described. On NIMS, nuclear reaction database for materials are explained. On JAERI, data analysis using IASCC data in JMPD is contained. Main database of JNC is experimental database of coexistence of engineering ceramics in liquid sodium at high temperature' and 'Tensile test database of irradiated 304 stainless steel' and 'Technical information database'. (S.Y.)

The first decade of INIS in Japan

International Nuclear Information System (INIS)

Ebinuma, Yukio; Narui, Shigeko; Yokoo, Hiroshi; Komatsubara, Yasutoshi; Hino, Shuji; Shimizu, Akio; Tsuda, Nobuyoshi

1981-06-01

Outlined are the operational developments of the JAERI acting as the INIS national center for Japan for ten years from the beginning of the project in 1970. These include preparation of main manuals, establishment of national network, expansion of coverage, improvement of quality, computerization and microfilming for the input as well as machine retrieval on INIS. Subjects of relatively common attention of secondary information societies are also selected from the many studies and examinations published in Japanese during the period. These efforts are summarized on analysis of input processing period, promotion of keyword assignment, search properties of the data base and their evaluation. (author)

Concurrent control system for the JAERI tandem accelerator

International Nuclear Information System (INIS)

Hanashima, S.; Shoji, T.; Horie, K.; Tsukihashi, Y.

1992-01-01

Concurrent processing with a multiprocessor system is introduced to the particle accelerator control system region. The control system is a good application in both logical and physical aspects. A renewal plan of the control system for the JAERI tandem accelerator is discussed. (author)

The JAERI program for development of safety assessment models and acquisition of data needed for assessment of geological disposal of high-level radioactive wastes

International Nuclear Information System (INIS)

Matsuzuru, H.

1991-01-01

The JAERI is conducting R and D program for the development of safety assessment methodologies and the acquisition of data needed for the assessment of geologic disposal of high-level radioactive wastes, aiming at the elucidation of feasibility of geologic disposal in Japan. The paper describes current R and D activities to develop interim versions of both a deterministic and a probabilistic methodologies based on a normal evolution scenario, to collect data concerning engineered barriers and geologic media through field and laboratory experiments, and to validate the models used in the methodologies. 2 figs., 2 refs

Repeating pneumatic pellet injector in JAERI

Energy Technology Data Exchange (ETDEWEB)

Kasai, Satoshi; Hasegawa, Kouichi; Suzuki, Sadaaki; Miura, Yukitoshi (Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment); Oda, Yasushi; Onozuka, Masanori; Tsujimura, Seiichi.

1992-09-01

A repeating pneumatic pellet injector has been developed and constructed at Japan Atomic Energy Research Institute. This injector can provide repetitive pellet injection to fuel tokamak plasmas for an extended period of time, aiming at the improvement of plasma performance. The pellets with nearly identical speed and mass can be repeatedly injected with a repetition rate of 2-3.3 Hz and a speed of up to 1.7 km/s by controlling the temperature of the cryogenic system, the piston speed and the pressure of the propellant gas. (author).

Repeating pneumatic pellet injector in JAERI

International Nuclear Information System (INIS)

Kasai, Satoshi; Hasegawa, Kouichi; Suzuki, Sadaaki; Miura, Yukitoshi; Oda, Yasushi; Onozuka, Masanori; Tsujimura, Seiichi.

1992-09-01

A repeating pneumatic pellet injector has been developed and constructed at Japan Atomic Energy Research Institute. This injector can provide repetitive pellet injection to fuel tokamak plasmas for an extended period of time, aiming at the improvement of plasma performance. The pellets with nearly identical speed and mass can be repeatedly injected with a repetition rate of 2-3.3 Hz and a speed of up to 1.7 km/s by controlling the temperature of the cryogenic system, the piston speed and the pressure of the propellant gas. (author)

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, 22. April 1, 1988 - March 31, 1989

International Nuclear Information System (INIS)

1991-03-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1988 through March 31, 1989. The latest report, for 1987, is JAERI-M 90-054. Detailed descriptions of the activities are presented in the following subjects : (i) studies on laser-induced organic chemical reactions and (ii) studies on radiation chemistry of high polymers and radiation dosimetry. (J.P.N.)

Production of heavy element and search for new isotopes at JAERI-RMS

Energy Technology Data Exchange (ETDEWEB)

Ikuta, Tomohiko [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1997-07-01

The new neutron deficient isotope {sup 209}Th and {sup 212}Pa have been produced in heavy ion induced fusion evaporation reactions. The evaporation residues were separated in-flight by the JAERI recoil mass separator (JAERI-RMS). The {alpha}-decay energy of {sup 209}Th and {sup 212}Pa are 8.080(50) MeV and 8.270(30) MeV, respectively. The corresponding half-lives are 3.8{sub -1.5}{sup +6.9} ms and 5.1{sub -1.9}{sup +6.1} ms. (author)

A review of fast reactor program in Japan

International Nuclear Information System (INIS)

1992-01-01

In accordance with the Long-term Program for Development and Utilization of Nuclear Energy defined by the Japan Atomic Energy Commission (JAEC), Power Reactor and Nuclear Fuel Development Corporation (PNC) is playing the key role in the development of a plutonium utilization system by fast breeder reactor (FBR), which is superior to the uranium utilization system by light water reactor, aiming to achieve future stable long-term energy supply and energy security of Japan. The experimental reactor Joyo, located in the O-arai Engineering Center (OEC) of PNC, has provided abundant experimental data and excellent operational records attaining 43,500 hours operation in total by the end of 1991, since its first criticality in 1977. On the prototype reactor Monju, 97.6% of construction works has already been completed and the function tests are in progress aiming at the initial criticality by the end of FY 1992. As for the demonstration fast breeder reactor (DFBR) of Japan, the Japan Atomic Power Company (JAPC) is promoting design study under the contracts with several leading Japanese fabricators, including Toshiba, Hitachi and Mitsubishi Heavy Industries, for selection of the basic specifications of DFBR. The related research and development (R and D) works are underway at several organizations under the discussion and coordination of the Japanese FBR R and D Steering Committee, which was established by the JAPAC, PNC, Japan Atomic Energy Research Institute (JAERI) and Central Research Institute of Electric Power Industry (CRIEPI). Progress of the design study and the related R and D are reported to the Subcommittee on FBR Development Program of JAEC. Recent major emphases on the PNC R and D are placed on the integrated feedback of all existing R and D results and experiences to the development of demonstration reactor. Furthermore, the overall functional and performance tests of Monju, is another important key role to attain further excellency of FBR technology, with

A review of fast reactor program in Japan

Energy Technology Data Exchange (ETDEWEB)

NONE

1992-07-01

In accordance with the Long-term Program for Development and Utilization of Nuclear Energy defined by the Japan Atomic Energy Commission (JAEC), Power Reactor and Nuclear Fuel Development Corporation (PNC) is playing the key role in the development of a plutonium utilization system by fast breeder reactor (FBR), which is superior to the uranium utilization system by light water reactor, aiming to achieve future stable long-term energy supply and energy security of Japan. The experimental reactor Joyo, located in the O-arai Engineering Center (OEC) of PNC, has provided abundant experimental data and excellent operational records attaining 43,500 hours operation in total by the end of 1991, since its first criticality in 1977. On the prototype reactor Monju, 97.6% of construction works has already been completed and the function tests are in progress aiming at the initial criticality by the end of FY 1992. As for the demonstration fast breeder reactor (DFBR) of Japan, the Japan Atomic Power Company (JAPC) is promoting design study under the contracts with several leading Japanese fabricators, including Toshiba, Hitachi and Mitsubishi Heavy Industries, for selection of the basic specifications of DFBR. The related research and development (R and D) works are underway at several organizations under the discussion and coordination of the Japanese FBR R and D Steering Committee, which was established by the JAPAC, PNC, Japan Atomic Energy Research Institute (JAERI) and Central Research Institute of Electric Power Industry (CRIEPI). Progress of the design study and the related R and D are reported to the Subcommittee on FBR Development Program of JAEC. Recent major emphases on the PNC R and D are placed on the integrated feedback of all existing R and D results and experiences to the development of demonstration reactor. Furthermore, the overall functional and performance tests of Monju, is another important key role to attain further excellency of FBR technology, with

How should the JAERI neutron source be designed?

International Nuclear Information System (INIS)

Watanabe, Noboru

1996-01-01

The importance of a next-generation neutron source in JAERI is discussed. The feasibility and the performances of three types of neutron sources, namely continuous wave spallation source (CWSS), long-pulse spallation source (LPSS) and short-pulse spallation source (SPSS), are compared based on a proposed JAERI accelerator, a superconducting (SC) proton linac (1-1.5 GeV, 25-16 mA in peak current, finally CW). How to realize one of the world's best neutron source using such a linac with a modest beam-current and what type of neutron source is the best for such a linac are the most important current problems. Since the accelerator is not favorable for LPSS due to a lower peak current and there exist serious technical problems for a CWSS target, a short-pulse spallation source would be the best candidate to realize a 5 MW-class SPSS like ESS, provided that the H - -injection to a compressor ring over a long pulse duration (>2 ms) is feasible. (author)

The present status of JAERI OCTOPUS

International Nuclear Information System (INIS)

Yokota, Watalu

1992-01-01

As the ECR ion source of the JAERI AVF Cyclotron, OCTOPUS was installed. An experimental operation was conducted to increase the capability of generating multi-charged ions and to ameliorate the efficiency of beam transport to the cyclotron. In this paper, the brief description of OCTOPUS is given. And the difference of ion generation characteristics depending on the position of the main gas introduction, and the result of emittance measurement are reported. (J.P.N.)

Proceedings of the 1999 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Yamano, Naoki; Fukahori, Tokio [eds.

2000-03-01

The 1999 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 18th and 19th of November 1999. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented papers were on keynote address, nuclear data measurement for long-lived RI and in medium energy region, status of JENDL, international session and other topics. In the poster session, presented papers were concerning experiments, evaluations, benchmark tests and on-line database on nuclear data. Those presented papers are compiled in the proceedings. The 64 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the 1998 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Yoshida, Tadashi; Fukahori, Tokio [eds.] [Japanese Nuclear Data Committee, Tokai, Ibaraki (Japan)

1999-03-01

The 1998 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 19th and 20th of November 1998. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented papers were on accelerator facilities, astrophysics and nuclear data, international session, radiation damage study and nuclear data, and integral test of nuclear data. In the poster session, presented papers were concerning experiments, evaluations, benchmark tests and on-line database on nuclear data. Those presented papers are compiled in this proceedings. The 50 of the presented papers are indexed individually. (J.P.N.)

Principle design and data of graphite components

International Nuclear Information System (INIS)

Ishihara, Masahiro; Sumita, Junya; Shibata, Taiju; Iyoku, Tatsuo; Oku, Tatsuo

2004-01-01

The High Temperature Engineering Test Reactor (HTTR) constructed by Japan Atomic Energy Research Institute (JAERI) is a graphite-moderated and helium-gas-cooled reactor with prismatic fuel elements of hexagonal blocks. The reactor internal structures of the HTTR are mainly made up of graphite components. As well known, the graphite is a brittle material and there were no available design criteria for brittle materials. Therefore, JAERI had to develop the design criteria taking account of the brittle fracture behavior. In this paper, concept and key specification of the developed graphite design criteria is described, and also an outline of the quality control specified in the design criteria is mentioned

Present and next steps of the JAERI superconducting rf linac based FEL program

International Nuclear Information System (INIS)

Minehara, E.J.; Yamauchi, T.; Sugimoto, M.

2000-01-01

The JAERI superconducting rf linac based FEL has successfully been lased to produce a 0.3 kW FEL light and 100 kW or larger electron beam output in quasi continuous wave operation in 1999. The 1 kW class output as our present program goal will be achieved to improve the optical out coupling method in the FEL optical resonator, the electron gun, and the electron beam optics in the JAERI FEL driver. As our next 5 year program goal is the 100 kW class FEL light and a few tens MW class electron beam output in average, quasi continuous wave operation of the light and electron beam will be planned in the JAERI superconducting rf linac based FEL facility. Conceptual design options needed for such a very high power operation and shorter wavelength light sources will be discussed to improve and to upgrade the exciting facility. (author)

Educating nuclear engineers of the 21st century. Introduction of the recent activities by the Atomic Energy Society of Japan

International Nuclear Information System (INIS)

Meshii, Toshiyuki

2008-01-01

Since the beginning of the 21st century, educating the next generation nuclear engineers have been an interest to groups, who were concerned of the recent decline in nuclear population in universities and industries. In June 2005, committee on education (CE) was established in AESJ (Atomic Energy Society of Japan), hoping to coordinate the groups related to nuclear education in Japan. The birth of CE was timely; because the importance of nuclear education was emphasized in 'Framework for Nuclear Energy Policy (Oct., 2005)' decided by the Atomic Energy Commission. In this paper, recent activities of CE, especially the proposals CE made related Framework for Nuclear Energy Policy, will be reported. The importance of the partnership with industries, government and academe will be emphasized. (author)

Publish literature on the research activities using the JMRT (II). Publication as JAERI research reports

Energy Technology Data Exchange (ETDEWEB)

Nagao, Yoshiharu; Ishii, Tadahiko; Niimi, Motoji; Fujiki, Kazuo; Takahashi, Hidetake (eds.) [Japan Atomic Energy Research Inst., Oarai, Ibaraki (Japan). Oarai Research Establishment

2002-11-01

The published reports on the research and development activities using the JMTR since 1971 to date have been surveyed by the search of literature database and questionnaire survey. This report compiles the title lists and abstracts of reports published by JAERI and survey the trend of the research and development in JAERI using the JMTR. (author)

Published literature on the research activities using the JMRT (II). Publication as JAERI research reports

International Nuclear Information System (INIS)

Nagao, Yoshiharu; Ishii, Tadahiko; Niimi, Motoji; Fujiki, Kazuo; Takahashi, Hidetake

2002-11-01

The published reports on the research and development activities using the JMTR since 1971 to date have been surveyed by the search of literature database and questionnaire survey. This report compiles the title lists and abstracts of reports published by JAERI and survey the trend of the research and development in JAERI using the JMTR. (author)

Field tests on migration of TRU-nuclide, (1). General introduction

International Nuclear Information System (INIS)

Ogawa, Hiromichi; Tanaka, Tadao; Mukai, Masayuki

2003-01-01

The field migration test using TRU nuclide was carried out as a cooperative research project between JAERI (Japan Atomic Energy Research Institute) and CIRP (China Institute for Radiation Protection). This report introduced the out-line of the field migration test and described the outline of the series of 'Field Test on Migration of TRU-nuclide' and main results as a summary report. (author)

Activity of the Atomic Energy Society of Japan for compiling the consensus standard on nuclear criticality safety control

International Nuclear Information System (INIS)

Yamane, Yoshihiro; Matsumoto, Tadakuni

2003-01-01

Activity of the Atomic Energy Society of Japan for compiling the consensus standard on nuclear criticality safety control is presented. The standard recommends an enhancement of nuclear criticality safety throughout a life cycle of facility in terms of a concept of 'barriers against criticality'. (author)

Proceedings of the first JAERI-Kansai international workshop on ultrashort-pulse ultrahigh-power lasers and simulation for laser-plasma interactions

International Nuclear Information System (INIS)

1998-03-01

Records of the First JAERI-Kansai International Workshop, which focused on the subject of 'Ultrashort-Pulse Ultrahigh-Power Lasers and Simulation for Laser-Plasma Interactions', are contained in this issue. The First JAERI-Kansai International Workshop was held as Joint ICFA/JAERI-Kansai International Workshop '97 with International Committee for Future Accelerators (ICFA). This report consists of 24 contributed papers. (J.P.N.)

Proceedings of the first JAERI-Kansai international workshop on ultrashort-pulse ultrahigh-power lasers and simulation for laser-plasma interactions

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-03-01

Records of the First JAERI-Kansai International Workshop, which focused on the subject of `Ultrashort-Pulse Ultrahigh-Power Lasers and Simulation for Laser-Plasma Interactions`, are contained in this issue. The First JAERI-Kansai International Workshop was held as Joint ICFA/JAERI-Kansai International Workshop `97 with International Committee for Future Accelerators (ICFA). This report consists of 24 contributed papers. (J.P.N.)

Application of EB in Japan

International Nuclear Information System (INIS)

Sunaga, Hiromi

2003-01-01

Radiation processing using electron beam (EB) facilities other than gamma-ray facilities in Japan is introduced. After briefly presented the features of EB compared with gamma ray, present status of EB application is described. Polymerized materials for use of wire, cable, radial tire, heat shrinkable tube, foam polyethylene, PTFE, battery separator, and adsorbent material are known to be resulting from cross-linking, decomposition, and graft polymerization reactions. Environmental preservation includes electron flue gas treatment in the coal- or oil-fired power plants, research for volatile organic compounds (VOC) and dioxins, as well as wastewater and sludge treatment. Finally activity of JAERI in the related fields is overviewed with the authors prospects for utilization of low energy EB with low cost for surface treatment and functional materials. (S. Ohno)

Application of EB in Japan

Energy Technology Data Exchange (ETDEWEB)

Sunaga, Hiromi [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

2003-02-01

Radiation processing using electron beam (EB) facilities other than gamma-ray facilities in Japan is introduced. After briefly presented the features of EB compared with gamma ray, present status of EB application is described. Polymerized materials for use of wire, cable, radial tire, heat shrinkable tube, foam polyethylene, PTFE, battery separator, and adsorbent material are known to be resulting from cross-linking, decomposition, and graft polymerization reactions. Environmental preservation includes electron flue gas treatment in the coal- or oil-fired power plants, research for volatile organic compounds (VOC) and dioxins, as well as wastewater and sludge treatment. Finally activity of JAERI in the related fields is overviewed with the authors prospects for utilization of low energy EB with low cost for surface treatment and functional materials. (S. Ohno)

Status of reduced enrichment programs for research reactors in Japan

International Nuclear Information System (INIS)

Kanda, Keiji; Nishihara, Hedeaki; Shirai, Eiji; Oyamada, Rokuro; Sanokawa, Konomo

1997-01-01

The reduced enrichment programs for the JRR-2, JRR-3, JRR-4 and JMTR of Japan Atomic Energy Research Institute (JAERI), and the KUR of Kyoto University Research Reactor Institute (KURRI) have been partially completed and are mostly still in progress under the Joint Study Programs with Argonne National Laboratory (ANL). The JMTR and JRR-2 have been already converted to use MEU aluminide fuels in 1986 and 1987, respectively. The operation of the upgraded JRR-3(JRR-3M) has started in March 1990 with the LEU aluminide fuels. Since May 1992, the two elements have been inserted in the KUR. The safety review application for the full core conversion to use LEU silicide in the JMTR was approved in February 1992 and the conversion has been done in January 1994. The Japanese Government approved a cancellation of the KUHFR Project in February 1991, and in April 1994 the U.S. Government gave an approval to utilize HEU in the KUR instead of the KUHFR. Therefore, the KUR will be operated with HEU fuel until 2001. Since March 1994, Kyoto University is continuing negotiation with UKAEA Dounreay on spent fuel reprocessing and blending down of recovered uranium, in addition to that with USDOE

Status of reduced enrichment programs for research reactors in Japan

Energy Technology Data Exchange (ETDEWEB)

Kanda, Keiji; Nishihara, Hedeaki [Kyoto Univ., Osaka (Japan); Shirai, Eiji; Oyamada, Rokuro; Sanokawa, Konomo [Japan Atomic Energy Research Institute, Tokyo (Japan)

1997-08-01

The reduced enrichment programs for the JRR-2, JRR-3, JRR-4 and JMTR of Japan Atomic Energy Research Institute (JAERI), and the KUR of Kyoto University Research Reactor Institute (KURRI) have been partially completed and are mostly still in progress under the Joint Study Programs with Argonne National Laboratory (ANL). The JMTR and JRR-2 have been already converted to use MEU aluminide fuels in 1986 and 1987, respectively. The operation of the upgraded JRR-3(JRR-3M) has started in March 1990 with the LEU aluminide fuels. Since May 1992, the two elements have been inserted in the KUR. The safety review application for the full core conversion to use LEU silicide in the JMTR was approved in February 1992 and the conversion has been done in January 1994. The Japanese Government approved a cancellation of the KUHFR Project in February 1991, and in April 1994 the U.S. Government gave an approval to utilize HEU in the KUR instead of the KUHFR. Therefore, the KUR will be operated with HEU fuel until 2001. Since March 1994, Kyoto University is continuing negotiation with UKAEA Dounreay on spent fuel reprocessing and blending down of recovered uranium, in addition to that with USDOE.

JAERI TIARA annual report vol. 2 (1992)

International Nuclear Information System (INIS)

Ishigaki, Isao; Tanaka, Ryuichi; Nashiyama, Isamu; Naramoto, Hirosi; Omichi, Hideki; Toraishi, Akio; Watanabe, Hiromasa; Watanabe, Hiroshi

1993-12-01

This annual report describes research activities which have been performed with the JAERI TIARA (Takasaki Ion Accelerators for Advanced Radiation Application) facilities from April 1, 1992 to March 31, 1993. Summary reports of 60 papers and brief descriptions on status of TIARA in the period are contained. A list of publications, the type of research collaborations and organization of TIARA are also given as appendices. (author)

International human cooperation in Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Shiba, Koreyuki; Kaieda, Keisuke; Makuuchi, Keizo; Takada, Kazuo; Nomura, Masayuki

1997-01-01

Rearing of talented persons in the area of nuclear energy is one of the important works in Japan Atomic Energy Research Institute. In this report, the present situations and future schedules of international human cooperation in this area wsere summarized. First, the recent activities of International Nuclear Technology Center were outlined in respect of international human cooperation. A study and training course which was started in cooperation with JICA and IAEA from the middle of eighties and the international nuclear safety seminar aiming at advancing the nuclear safety level of the world are now being put into practice. In addition, a study and training for rearing talented persons was started from 1996 to improve the nuclear safety level of the neighbouring countries. The activities of the nuclear research interchange system by Science and Technology Agency established in 1985 and Bilateral Co-operation Agreement from 1984 were explained and also various difficulties in the international cooperation were pointed out. (M.N.)

Application of JAERI research reactors to education

International Nuclear Information System (INIS)

Ogawa, Shigeru; Morozumi, Minoru

1987-01-01

At the dawning of the atomic age in Japan, training on reactor operation and reactor engineering experiments has been started in 1958 using JRR-1 (a 50 kW water boiler type reactor with liquid fuel), which was the first research reactor in Japan. The role of the training has been transferred to JRR-4 (a 3500 kW swimming pool type reactor with ETR type fuel) since 1969 due to the decommission of JRR-1. The training courses which have been held are: JRR-1 Short-Term Course for Operation (1958 ∼ 1963) General Course (1961 ∼ ) Reactor Engineering Course (1976 ∼ ) Training Course in Nuclear Technology (International course)(1986 ∼ ). And individual training concerning research reactors for the participants of scientist exchange program sponsored by Science and Technology Agency and of bilateral agreement have been initiated in 1985. The graduates of these courses work as staff members in various fields in nuclear industry. (author)

JAEA's actions and contributions to the strengthening of nuclear non-proliferation

Science.gov (United States)

Suda, Kazunori; Suzuki, Mitsutoshi; Michiji, Toshiro

2012-06-01

Japan, a non-nuclear weapons state, has established a commercial nuclear fuel cycle including LWRs, and now is developing a fast neutron reactor fuel cycle as part of the next generation nuclear energy system, with commercial operation targeted for 2050. Japan Atomic Energy Agency (JAEA) is the independent administrative agency for conducting comprehensive nuclear R&D in Japan after the merger of Japan Atomic Energy Research Institute (JAERI) and Japan Nuclear Cycle Development Institute (JNC). JAEA and its predecessors have extensive experience in R&D, facility operations, and safeguards development and implementation for new types of nuclear facilities for the peaceful use of nuclear energy. As the operator of various nuclear fuel cycle facilities and numerous nuclear materials, JAEA makes international contributions to strengthen nuclear non-proliferation. This paper provides an overview of JAEA's development of nuclear non-proliferation and safeguards technologies, including remote monitoring of nuclear facilities, environmental sample analysis methods and new efforts since the 2010 Nuclear Security Summit in Washington D.C.

Development of the new data transmission and processing equipment for radiation surveillance

International Nuclear Information System (INIS)

Suzuki, Shintaro; Takahashi, Kouichi; Suganami, Jun; Kawai, Toshiaki

2004-01-01

In the Mito Atomic Energy Office, which belongs to Ministry of Education, Culture, Sports, Science and Technology, as part of an environmental safety measures of the nuclear institutions in Ibaraki area, the regular surveillance of the environmental monitoring data measured in Japan Nuclear Cycle Development Institute (JNC) and Japan Atomic Energy Research Institute (JAERI) which are main facilities in Oarai and Tokai area is performed. For the purpose of strengthening environmental radiation surveillance in the fiscal year 2003, the data transmission and processing equipment for radiation surveillance is updated, and the new equipment is actually operated from March, 2004. In this paper, the features and functions of the new data transmission and processing equipment are introduced. (author)

Accomplishments of LOCA/ECCS experimental research at Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Tasaka, Kanji; Murao, Yoshio; Koizumi, Yasuo

1984-01-01

Japan Atomic Energy Research Institute has investigated loss-of-coolant accident (LOCA)/emergency core cooling system (ECCS) from 1970. Major results of the LOCA/ECCS research are summarized in this report. ROSA-II program was LOCA/ECCS research for a pressurized water reactor (PWR) and ROSA-III program was for a boiling water reactor (BWR). The both test facilities were scaled at approximately 1/400 of the respective reference PWR and BWR. Large scale reflood test is research on reflood phenomena during a large break LOCA of PWR. The test facility is scaled at approximately 1/20 of the reference PWR and the research is still being continued. (author)

Studies of glass waste form performance at Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Banba, Tsunetaka; Kamizono, Hiroshi; Nakayama, Shinichi; Tashiro, Shingo

1989-08-01

The recent studies of glass waste form performance at Japan Atomic Energy Research Institute can be classified into the following three categories; (1) Study on the volatilization of radionuclides from the waste glass, which is necessary to estimate the safety in relation to operation of a storage facility. (2) Study on the radiation (alpha-radiation) effects which have relation to the long-term stability of the waste glass. (3) Study on the leaching behavior of actinides under the repository conditions, which is necessary to predict the long-term release rate of radionuclides from the waste glass. In the present report, the recent results corresponding to the above categories are described. (author)

Present status of research activities conducted by research group for heavy elements microbiology in JAERI

International Nuclear Information System (INIS)

Ohnuki, Toshihiko; Ozaki, Takuo; Yoshida, Takahiro

2004-01-01

It has been recognized that microbial transformations of radionuclides and toxic metals could be significant in the environment, but there is a paucity of information on the mechanisms of biotransformation of radionuclides by the microorganisms. An understanding at the fundamental level the mechanisms of mobilization, immobilization and bioavailability of radioactive elements in particular the actinides is important from the standpoint of mobility of actinides in the environment, disposal of radioactive wastes in deep geological formation, remediation of contaminated soils and materials, and development of strategies for the long-term stewardship of the contaminated sites. The microbiology research group in Japan Atomic Energy Research Institute (JAERI) is conducting basic scientific research on microbial interactions with actinides. Fundamental research on microbial transformations of actinides include elucidation of the mechanisms of dissolution and precipitation of various chemical forms such as ionic, oxides, organic and inorganic complexes of actinides by aerobic or anaerobic microorganisms under relevant microbial process conditions. State-of-the-art analytical techniques are used to determine the interaction of actinides with microorganisms at the molecular level to understand the structure function relationship. These techniques include time-resolved laser fluorescence spectroscopy (TRLFS) to determine the coordination number, oxidation states and the nearest neighbor by X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) at the Synchrotron Light Source, identification of functional groups by nuclear magnetic resonance (NMR), determination of chemical forms by transmission electron microscopy (TEM), and genomic (DNA) manipulation by molecular techniques. We here report the present status of our research activities on accumulation of lanthanides(III) by microorganisms, application of micro-particle induced X

Proceedings of the international symposium NUCEF 2005

Energy Technology Data Exchange (ETDEWEB)

NONE

2005-08-01

Japan Atomic Energy Research Institute (JAERI) held the international symposium NUCEF 2005 at Techno Community Square RICOTTI in Tokai-mura on February 9 and 10, 2005. This symposium was co-organized by Japan Nuclear Cycle Development Institute (JNC), and Nuclear Fuel Cycle Safety Research Committee authorized the program. Two hundred thirty-nine participants from 11 countries presented fifty-nine papers, and discussed recent research activities and its outputs on waste disposal safety, fuel cycle facility safety including criticality safety, and separation process development. The presented papers are compiled in the proceedings. (author)

History of the research ad hoc committee on 'dissemination of information' and the special ad hoc committee on 'dissemination of information' of the Atomic Energy Society of Japan

Energy Technology Data Exchange (ETDEWEB)

Itabashi, Keizo [Japan Atomic Energy Agency, Intellectual Resources Department, Tokai, Ibaraki (Japan)

2010-06-15

The Research ad hoc committee on 'Dissemination of information' of the Atomic Energy Society of Japan was held 15 times from Oct. 1970 to Mar 1973. After that, The Special ad hoc committee on 'Dissemination of information' of the Atomic Energy Society of Japan was held 115 times from Apr. 1973 to Mar 2009. The history of these two committees is described. Activity report is arranged including the information on change of the member and topics of the meeting, and the minutes. Furthermore, the document list on International Nuclear Information System (INIS) from Japan is included. (author)

History of the research ad hoc committee on 'dissemination of information' and the special ad hoc committee on 'dissemination of information' of the Atomic Energy Society of Japan

International Nuclear Information System (INIS)

Itabashi, Keizo

2010-06-01

The Research ad hoc committee on 'Dissemination of information' of the Atomic Energy Society of Japan was held 15 times from Oct. 1970 to Mar 1973. After that, The Special ad hoc committee on 'Dissemination of information' of the Atomic Energy Society of Japan was held 115 times from Apr. 1973 to Mar 2009. The history of these two committees is described. Activity report is arranged including the information on change of the member and topics of the meeting, and the minutes. Furthermore, the document list on International Nuclear Information System (INIS) from Japan is included. (author)

The law for the Independent Administrative Institution Japan Atomic Energy Agency

International Nuclear Information System (INIS)

2005-07-01

The Law no.155 of 3 Dec. 2004(the latest revision, Law no.87 of 26 July 2005) is the law to define the objective, scope of activities, etc. of the independent administrative institution Japan Atomic Energy Agency. The agency is established under the atomic energy basic law to make comprehensive research and development associated with nuclear energy and establishment of nuclear fuel cycle and to contribute to promote research, development and utilization of it. The agency has its main office in Ibaraki prefecture and its capital is the amount of contributions by the government and persons other than the government. The officers are consisted of a president, an executive vice president, less than 7 executive directors and 2 auditors. The president is appointed by the Minister of Ministry of Education, Culture, Sports, Science and Technology with the consent of the atomic energy commission. The term of the president is from the day of the appointment to the end of midterm goal period and that of auditors is 2 years. Activities of the agency include basic and application research of nuclear energy, technical establishment of nuclear fuel cycle (R and D of Fast Breeder Reactor, nuclear fuel for FBR, reprocessing and treatment and disposal of HLW), promotion of application of R and D results of above areas, utilization sharing of facility and equipment, human resource development of nuclear energy field, collection, arrangement and dissemination of nuclear information and study and analysis requested by the government. (T. Tanaka)

The ion source development for neutral injection heating at JAERI

International Nuclear Information System (INIS)

Shirakata, H.; Itoh, T.; Kondoh, U.; Matsuda, S.; Ohara, Y.; Ohga, T.; Shibata, T.; Sugawara, T.; Tanaka, S.

1976-01-01

The neutral beam research and development effort at JAERI has been mainly concentrated on design, construction and testing of ion sources needed for present and planned heating experiments. Fundamental characteristics of the ion sources developed are described

Economical scale of radiation applications in Japan

International Nuclear Information System (INIS)

Yanagisawa, Kazuaki; Kume, Tamikazu; Makuuchi, Keizo; Takeshita, Hidefumi

2000-01-01

As a scale to quantify actual state of a thing, person, material and money are used in general, and money or economical scale has been frequently investigated on radiation application. As some investigations on annual sales (economical scale) of tire for car and germination protection of tomato had been tried to estimate in Japan, they were carried out only partially but not in general. On the other hand, in U.S.A. some general investigations were carried out, to report 421 billion dollars for nuclear energy application where its 80% was occupied by radiation application and remained 20 % was energy application (electricity). Therefore, JAERI established a special group (radiation frontier research group) aiming to investigate economical scale of radiation application in Japan to industrial, agricultural and medical field in general under cooperation of universities and private companies by receiving trust of the Science and Technology Agency. Here were described on basic concept on the investigation, its results, and total image on economical scale of radiation application and its comparison with that of energy application. (G.K.)

JAERI 200 kV electron gun with an NEA-GaAs photocathode

International Nuclear Information System (INIS)

Nishitani, Tomohiro; Minehara, Eisuke J.; Hajima, Ryoichi; Nagai, Ryoji; Sawamura, Masaru; Nishimori, Nobuyuki; Kikuzawa, Nobuhiro; Yamauchi, Toshihiko

2004-01-01

The photocathode DC-gun with high average current, low beam emittance and long operational lifetime is considered to be indispensable for ERL-FEL. We have started the development program of a 200 keV electron gun with the NEA-GaAs photocathode for the first time in JAERI. In order to long an NEA surface lifetime, the JAERI 200 kV electron gun system consists of a 200 kV DC-gun chamber on extreme high vacuum condition and an NEA activation chamber with load-lock system. We report the goal of photocathode DC-gun R and D and the schedule of a developmental program. (author)

Overview of the 3rd phase crossover research on migration of radionuclides in biosphere

International Nuclear Information System (INIS)

Uchida, Shigeo; Amano, Hikaru; Chiba, Masaru; Hisamatsu, Shun'ichi; Enomoto, Shuichi; Matsumoto, Shiro

2003-01-01

In 1991, we started a series of projects in Nuclear Energy Generic Crossover Research, which is known as ''Crossover Research (CR)''. This 1st phase was successfully finished with the active cooperation of five organizations: Japan Atomic Energy Research Institute (JAERI), Meteorological Research Institute (MRI), National Institute of Radiological Sciences (NIRS), the Institute of Physical and Chemical Research (RIKEN) and Power Reactor and Nuclear Fuel Development Corporation (PNC). Subsequently we carried out the 2nd phase of CR (1996-1998). A new member, Institute for Environmental Sciences (IES) participated from this phase. In the 3rd phase CR, a project on ''Development of a dynamic transfer model of radionuclides in the soil ecosphere'', is currently being promoted (1999-2003). The following five researches are carried out in this project. (1) Research into the forms of existence of nuclide and their change in the soil (NIRS and JAERI), (2) Research into the transition behavior of radionuclides in plants (IES, RIKEN and NIRS), (3) Research into the relation to the microorganism and on environmental remediation (RIKEN, JAERI and NIRS), (4) Research on the migration of radionuclides from atmosphere to soil and plant (MRI and JAERI), and (5) Database construction on transfer parameters (JAERI, NIRS and MRI). Then, JAERI, MRI and NIRS are working on the development of a dynamic transfer model for radionuclides on the basis of a gained knowledge about the environmental behavior with the cooperation of universities, etc. The dynamic transfer model developed in this project is effective not only for Japan, but also for the Southeast Asian countries. Besides, this model is capable of predicting the behavior of materials that are harmful to the environment, i.e. hazardous heavy metals discharged in the soil ecosphere. (author)

Proceedings of the 4th workshop on ion-beam-applied biology

International Nuclear Information System (INIS)

Kobayashi, Yasuhiko; Funayama, Tomoo; Wada, Seiichi; Hamada, Nobuyuki

2005-09-01

In order to promote research on biological application using ion beam at TIARA, we have annually hold the Workshop on Ion-beam-applied Biology at JAERI Takasaki since 2002. The 4th workshop entitled 'New Frontiers of Biological Research using microbeam - Application to Radio-microsurgery and Cellular Response to Radiations -' was held on June 22nd, 2005, aimed to overview the recent progress in microbeam-applied researches, and discuss the future direction of application of microbeam not to researches in life science and biotechnology, but also to clinical medicine. This workshop was hosted by JAERI Takasaki, with the cooperation of The Ion Beam Breeding Society, The Japan Radiation Research Society, The Japanese Society for Biological Sciences in Space, The Kanto-Kohetsu Branch of The Atomic Energy Society of Japan, and The Japan Radioisotope Association. There were 104 participants including clinicians attended from universities, public research institutions, and private companies. The papers presented in the workshop were about the ion-beam-applied biological researches at JAERI, the present status of microbeam facilities in Japan and foreign countries, and the microbeam-based analyses of damage repair machinery in insects and radiation-induced bystander effects. It was realized again that microbeam is quite useful for functional analyses by targeted disruption of specific tissues in bio-organisms, and is of critical importance in investigating biological influences of low-dose radiations as well as in its radiological application. These researches using microbeam are expected to further march on. The 13 of the presented papers are indexed individually. (J.P.N.)

Proceedings of fuel safety research specialists' meeting

International Nuclear Information System (INIS)

Suzuki, Motoe

2002-08-01

Fuel Safety Research Specialists' Meeting, which was organized by Japan Atomic Energy Research Institute, was held on March 4-5, 2002 at JAERI in Tokai Establishment. Purposes of the Meeting are to exchange information and views on LWR fuel safety topics among the specialist participants from domestic and foreign organizations, and to discuss the recent and future fuel research activities in JAERI. In the Meeting, presentations were given and discussions were made on general report of fuel safety research activities, fuel behaviors in normal operation and accident conditions, FP release behaviors in severe accident conditions, and JAERI's ''Advanced LWR Fuel Performance and Safety Research Program''. A poster exhibition was also carried out. The Meeting significantly contributed to planning future program and cooperation in fuel research. This proceeding integrates all the pictures and papers presented in the Meeting. The 10 of the presented papers are indexed individually. (J.P.N.)

The second workshop of neutron science research program

Energy Technology Data Exchange (ETDEWEB)

Yasuda, Hideshi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Tone, Tatsuzo [eds.

1997-11-01

The Japan Atomic Energy Research Institute(JAERI) has been proposing the Neutron Science Research Program to explore a broad range of basic research and the nuclear technology including actinide transmutation with use of powerful spallation neutron sources. For this purpose, the JAERI is conducting the research and development of an intense proton linac, the development of targets, as well as the conceptual design study of experimental facilities required for applications of spallation neutrons and secondary particle beams. The Special Task Force for Neutron Science Initiative was established in May 1996 to promote aggressively and systematically the Neutron Science Research Program. The second workshop on neutron science research program was held at the JAERI Tokai Research Establishment on 13 and 14 March 1997 for the purpose of discussing the results obtained since the first workshop in March 1996. The 27 of the presented papers are indexed individually. (J.P.N.)

JAERI TANDEM annual report 2003. April 1, 2003 - March 31, 2004

International Nuclear Information System (INIS)

Ishii, Tetsuro; Takeuchi, Suehiro; Oshima, Masumi; Nagame, Yuichiro; Chiba, Satoshi; Sataka, Masao

2004-12-01

This annual report describes research activities, which have been performed with the JAERI tandem accelerator and its energy booster from April 1, 2003 to March 31, 2004. Summary reports of 42 papers, and lists of publication, personnel and cooperative research with universities are contained. The following are some of the highlights in FY 2003. The JAERI-KEK joint project of developing an ISOL-based radioactive-nuclear beam facility has been running since FY2001. In FY2003, the accelerators (split-coaxial RFQ, IH linac) in KEK were moved to a remodeled room in the tandem accelerator facility. The ion source in the ISOL was developed for the use of a UC 2 target. The ISOL was connected to an ECR charge breeder operating at 18 GHz. An ECR ion source for stable-nuclear beams was also installed. This facility accelerates heavy-ions with A/q 47 K was carried out by deep-inelastic collisions with a 48 Ca beam. The electromagnetic properties of low-lying states in 66,68Z n, 78 Se isotopes were determined by projectile Coulomb excitation. High-spin states in 169,172,187 Re, 145,146 Tb and 179 Au, and a high-spin isomer of 136 Ba were identified by the γ-ray detector array, GEMINI-II. In one of the heaviest nuclei 257 No, the spin-parity of its ground state was determined by α-decay spectroscopy using the ISOL and a He gas-jet system. In research of nuclear reactions, fusion cross sections of 64 Ni + 154 Sm and 86 Kr + 134,138 Ba reactions were measured by using the recoil mass separator JAERI-RMS in order to investigate the dependence of sub-barrier fusion on the nuclear deformation and shell structure. The exclusive cross section of 8 Li (α, n) reaction was measured with high statistics in the energy region, E cm = 0.9-2.8 MeV, of astrophysical interest by using a highly pure low-energy beam of unstable 8 Li nuclei from the JAERI-RMS. In research of nuclear chemistry, fluoride complexation of element 104, rutherfordium (Rf), produced in the 248 Cm ( 18 O, 5n) 261 Rf

Preriminary operation results of JAERI ECR ion source OCTOPUS

International Nuclear Information System (INIS)

Yokota, W.; Arakawa, K.; Tachikawa, T.; Satoh, T.; Dupont, C.; Jongen, Y.

1990-01-01

An ECR ion source, new OCTOPUS, was built for and AVF cyclotron of the Japan Atomic Energy Research Institute, Takasaki. The design of this source is almost identical to the first built OCTOPUS, except for the RF frequency for the 2nd stage. The first operation of the new OCTOPUS was performed. High intensity of X-ray leakage was measured outside the lead shield wall of the source. (author)

Proceedings of the 2000 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Yamano, Naoki [Sumitomo Atomic Energy Industries, Ltd., Tokyo (Japan); Fukahori, Tokio [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2001-03-01

The 2000 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 16th and 17th of November 2000. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented were 18 papers on topics of recent experiments, status of JENDL-3.3 and JENDL High Energy File, benchmark tests of JENDL-3.2, international activities and other subjects. In the poster session, presented were 40 papers concerning experiments, evaluations, benchmark tests and on-line database on nuclear data. Those presented papers are compiled in the proceedings. The 58 of the presented papers are indexed individually. (J.P.N.)

Achievement in research on ion beam application under the scientific cooperation program with the Gesellschaft fuer schwerionenforschung mbH

Energy Technology Data Exchange (ETDEWEB)

Yoshida, Masaru; Maekawa, Yasunari (eds.) [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

2003-03-01

The Japan Atomic Energy Research Institute (JAERI) and the Gasellshaft fuer Schwerionenforshung mbH (GSI) signed a memorandum of 'Research and Development in the Field of Ion Beam Application' in January, 1991 and started the cooperative research program. The cooperation has been implemented by means of joint research between JAERI and GSI, exchange of scientific and technical experts, and providing mutual exchange of research materials as well as technical information. This report summarizes the cooperative research activities under the cooperative research program in the last 12 years. The list of publications and several articles relating to this cooperative research program are attached as an appendix. All the attached articles are reprinted with permission from the publishers. (author)

Development of nuclear powered ship in Japan

International Nuclear Information System (INIS)

Sato, Hiroshi

1976-01-01

The development of nuclear merchant ship in Japan was started in 1955 by the establishment of Nuclear Ship Study Group, and since then, the investigation, test and research on nuclear ships have been continued. As a result, a nuclear ocean observation and supply ship was designed for trial. Researches were carried out also in JAERI and Institute for Technical Research of Ships. Meanwhile, the nuclear icebreaker Lenin was completed in Soviet Union in 1959, the nuclear ship Savannah set out for maiden voyage in U.S. in 1962, and the construction of the nuclear ore carrier Otto Hahn was prepared in FRG. Japan Nuclear Ship Development Corp. was established in 1963, and started the design and construction of the first nuclear ship in Japan, Mutsu. The basic policy in the construction is the improvement of nuclear ship technology, the securing of safety, and the use of domestic technologies as far as possible. The progress of the design, construction and test of the Mutsu is described. Owing to the problem of radiation leak, the development of nuclear ships stagnated for a while, but the nuclear plant of the Mutsu demonstrated the expected performance in the functional test, land criticality test and zero output test, and it is expected that the bud of the independent development brought up so far can bear valuable fruit. The independent development of marine nuclear reactors should be continued by selecting the way most suitable to Japan. (Kako, I.)

Recent progress in application of JAERI alanine/ESR dosimetry system

International Nuclear Information System (INIS)

Kojima, T.

1995-01-01

Feasibility studies of application of JAERI alanine/ESR dosimetry system were performed on radiotherapy level dosimetry, low dose-rate dosimetry for residual life estimation of cable insulators used in nuclear power facilities, and dose monitoring for electron processing. (author)

Atomic energy indemnification system in Japan

International Nuclear Information System (INIS)

Hoshino, Eiichi

1980-01-01

The Japanese legislation on the indemnification by atomic energy enterprisers for atomic energy damages, published in 1961 and enforced in 1962, includes the law concerning indemnification for atomic energy damages and the law concerning atomic energy damage indemnification contracts (hereafter referred to as ''the law concerning indemnification contracts''). While the Japanese laws are same as the foreign legislation in the provisions of the responsibility of atomic energy damages without the error of atomic energy enterprisers, exemption reasons are more important in this respect. When damages are due to exceptionally grave natural disasters or social disturbances, atomic energy enterprisers are exempted from the responsibility. Indemnification amounts are determined, but the Japanese laws do not limit then, different from the foreign regulations. The periods for demanding indemnification are not defined particularly in the law concerning indemnification contracts, and the general basic rules of the civil law are applied. As a result, the demand right terminates in 3 years after the injured persons find damage and offenders, and in 20 years since the unlawful act (Article 724, Civil law). The indemnification liability for atomic energy damages is focused on atomic energy enterprisers concerned in the same way as the foreign laws. The measures for assuring the execution of indemnification responsibility consist in principle of the firm conbination of the liability insurance contracts with private insurance companies and the indemnification contracts for atomic energy damages with the state. The damages of employes suffered in works are excluded from indemnification, which has been the main issue of discussion since the enactment of atomic energy laws. (Okada, K.)

Economical evaluation on gas turbine high temperature reactor 300 (GTHTR300)

International Nuclear Information System (INIS)

Takei, Masanobu; Kosugiyama, Shinichi; Mouri, Tomoaki; Katanishi, Shoji; Kunitomi, Kazuhiko

2006-01-01

Japan Atomic Energy Research Institute (JAERI) has been developing a graphite moderate and helium cooled High Temperature Gas-cooled Reactor (HTGR) with gas turbine, the GTHTR300 based on experience gained in development and operations of the High Temperature Engineering Test Reactor (HTTR) in JAERI. The GTHTR300 is a simplified and economical power plant with a high level of safety characteristics and a high plant efficiency of approximately 46%. Cost evaluation for plant construction and power generation is studied in order to clarify the economical feasibility of the GTHTR300. The construction cost is estimated to be about 200 thousands Yen/kWe. The power generation cost is estimated to be about 3.8 Yen/kWh by the conditions of 90% load factor and 3% discount rate. The economical feasibility of the GTHTR300 is certified. The present study is entrusted from Ministry of Education, Culture, Sports, Science and Technology of Japan. (author)

JAERI Nuclear Engineering School and technology transfer

International Nuclear Information System (INIS)

Nishimura, Kazuaki; Kawaguchi, Chiyoji

1978-01-01

A method is introduced to evaluate the degree of nuclear technology transfer; that is, the output powers of Japanese nuclear reactors constructed in these 20 years are chronologically plotted in a semi-log figure. All reactors plotted are classified into imported and domestic ones according to a value of domestication factor. A space between two historical trajectories of reactor construction may be interpreted as one of the measures indicating the degree of nuclear technology transfer. In connection with this method, historical change of educational and training courses in Nuclear Engineering School of Japan Atomic Energy Research Institute is reviewed in this report. (author)

Cable systems for experimental facilities in JAERI TANDEM ACCELERATOR BUILDING

International Nuclear Information System (INIS)

Tukihashi, Yoshihiro; Yoshida, Tadashi; Takekoshi, Eiko

1979-03-01

Measuring cable systems for experimental facilities in JAERI TANDEM ACCELERATOR BUILDING were completed recently. Measures are taken to prevent penetration of noises into the measuring systems. The cable systems are described in detail, including power supplies and grounding for the measuring systems. (author)

Proceedings of the 1st JAERI symposium on HTGR technologies

International Nuclear Information System (INIS)

1990-07-01

This report was edited as the Proceedings of the 1st JAERI Symposium on HTGR Technologies, - Design, Licensing Requirements and Supporting Technologies -, collecting the 21 papers presented in the Symposium. The 19 of the presented papers are indexed individually. (J.P.N.)

Annual report of the Osaka Laboratory for Radiation Chemistry Japan Atomic Energy Research Institute, 21

International Nuclear Information System (INIS)

1990-03-01

This report describes research activities of Osaka Laboratory for Radiation Chemistry, JAERI during one year period from April 1, 1987 through March 31, 1988. Detailed descriptions of the activities are presented in the following subjects: (i) studies on surface phenomena under electron and ion irradiations and (ii) studies on radiation chemistry of high polymers and radiation dosimetry. (J.P.N.)

Generation of Coherent Synchrotron Radiation from JAERI-ERL

CERN Document Server

Hajima, R; Kikuzawa, N; Minehara, E J; Nagai, R; Nishitani, T; Sawamura, M

2005-01-01

An electron beam with high-average current and short bunch length can be accelerated by energy-recovery linac. Coherent synchrotron radiation (CSR) from such an electron beam will be a useful light source around millimeter wavelength. We report results from a preliminary measurement of CSR emitted from a bending magnet of JAERI-ERL. Possible enhancement of CSR power by FEL micro-bunching is also discussed.

The Tritium Systems Test Assembly applicability to ITER

International Nuclear Information System (INIS)

Anderson, J.L.

1988-01-01

The Tritium Systems Test Assembly (TSTA), is operated by the Los Alamos National Laboratory (LANL) under the sponsorship of the US Department of Energy (DOE) and the Japan Atomic Energy Research Institute (JAERI). The objectives of the TSTA project are to develop, demonstrate, and evaluate the exhaust gas processing and tritium related safety systems for the magnetic fusion energy program. The applicability of these processes for the ITER Tokamak is discussed

Report on progress of researches by common utilization of JAERI nuclear facilities, for fiscal, 1991

International Nuclear Information System (INIS)

1992-08-01

The results of the joint researches by utilizing the facilities of JAERI in 1991 fiscal year were summarized, and this report was able to be completed. Many researchers in whole Japan took part in many themes, and the very significant results were obtained. Now this joint research has reached the great turnabout period. The reconstructed JRR-3M was offered for joint utilization since April, 1991, and the utilization for neutron diffraction and scattering increased largely. As for the ion irradiation facility in Takasaki Research Establishment, the partial operation will be started in the next year, and the joint utilization is expected to begin. Accompanying the diversification of the utilization of facilities, in order to properly meet the needs of users, the thorough revision of the system seems necessary. The number of research themes in 1991 was 222 cases. JRR-3M accomplished the joint utilization operation of 8 cycles as expected, but JRR-2 caused a trouble during 5th cycle, and the operation thereafter was canceled. In this book, 159 reports are collected. (K.I.)

Nuclear Safety Research Reactor (NSRR) program in JAERI

Energy Technology Data Exchange (ETDEWEB)

Ishikawa, M; Hoshi, T; Ohnishi, N; Fujishiro, T; Inabe, T [Japan Atomic Energy Research Institute (Japan)

1974-07-01

An experimental research program, named Nuclear Safety Research Reactor (NSRR) Program, has been progressing in Japan Atomic Energy Research Institute (JAERI) using a modified TRIGA-ACPR. This paper is prepared to describe the outline of the NSRR program. The purpose of the NSRR program is to examine the behaviors of fuel rods under various accidental conditions of power reactors so as to establish realistic safety criteria and to develop analytical models for prediction of fuel failures. We expect to contribute finally to the improvement of reactor design and fuel fabrication techniques based on these experimental results. The NSRR experiments will be performed in the large central experimental tube, which is one of the most excellent features of this reactor, using specially designed capsules or loops which can accommodate up to 49 BWR type test fuels. Many types of test fuels in various conditions will be examined by the NSRR program, such as BWR, PWR and FBR type fuels from the beginning of life to the end of life with and without simulated reactor internal structures. The experiments will be continued for more than 10 years divided into three phases. The first phase of the program will be devoted to the experiments pertaining to reactivity initiated accidents (RIA). In these experiments we will make use of the excellent pulsing capability of ACPR, which is expected to generate 100 MW-sec prompt energy release with 1.3 msec of minimum reactor period by 4.7 dollar reactivity insertion and to yield more than 280 cal/g-UO{sub 2} heat deposit even in an approximately 10% enriched BWR type test fuel. (280 cal/g-UO{sub 2} is believed enough heat deposit to cause fuel failure.) In general, heat flow behaviors from fuel meat to clad and from clad to coolant are very complex phenomena, but they are the key point in analyzing transient response of fuels. In the sudden heat transient conditions brought by pulsing, however, it will be possible to examine each phenomenon

Nuclear Safety Research Reactor (NSRR) program in JAERI

International Nuclear Information System (INIS)

Ishikawa, M.; Hoshi, T.; Ohnishi, N.; Fujishiro, T.; Inabe, T.

1974-01-01

An experimental research program, named Nuclear Safety Research Reactor (NSRR) Program, has been progressing in Japan Atomic Energy Research Institute (JAERI) using a modified TRIGA-ACPR. This paper is prepared to describe the outline of the NSRR program. The purpose of the NSRR program is to examine the behaviors of fuel rods under various accidental conditions of power reactors so as to establish realistic safety criteria and to develop analytical models for prediction of fuel failures. We expect to contribute finally to the improvement of reactor design and fuel fabrication techniques based on these experimental results. The NSRR experiments will be performed in the large central experimental tube, which is one of the most excellent features of this reactor, using specially designed capsules or loops which can accommodate up to 49 BWR type test fuels. Many types of test fuels in various conditions will be examined by the NSRR program, such as BWR, PWR and FBR type fuels from the beginning of life to the end of life with and without simulated reactor internal structures. The experiments will be continued for more than 10 years divided into three phases. The first phase of the program will be devoted to the experiments pertaining to reactivity initiated accidents (RIA). In these experiments we will make use of the excellent pulsing capability of ACPR, which is expected to generate 100 MW-sec prompt energy release with 1.3 msec of minimum reactor period by 4.7 dollar reactivity insertion and to yield more than 280 cal/g-UO 2 heat deposit even in an approximately 10% enriched BWR type test fuel. (280 cal/g-UO 2 is believed enough heat deposit to cause fuel failure.) In general, heat flow behaviors from fuel meat to clad and from clad to coolant are very complex phenomena, but they are the key point in analyzing transient response of fuels. In the sudden heat transient conditions brought by pulsing, however, it will be possible to examine each phenomenon separately

Champion data comparison in nuclear research institutes in Europe, the U. S., and Japan

International Nuclear Information System (INIS)

Kazuaki Yanagisawa; Cutler, D.E.

2011-01-01

Bibliometric analysis was carried out for champion data comparisons among prestigious nuclear research institutes (PNRI) existed in Japan, the U. S., France, and Germany. The analysis was relied on database INIS (IAEA), ECD (DOE), WOS (Thomson), and SCOPUS (Elsevier). INIS is advanced, key ex-post evaluating tool for determining general research paper-based champion. Over the 30-year time span of research paper publication, the world champion among 11 PNRI is JAERI confirmed by INIS but ORNL confirmed by ECD, WOS, and SCOPUS, the latter two collected journal submitted research paper. Five years ago JAERI is the 3rd ranked institutes following ORNL and ANL. INIS database results revealed that CEA/Grenoble is the French domestic champion regarding research paper publication. Five years ago it was CEA/Saclay. Results from analytical tools used in bibliometric studies should be viewed with careful consideration to learn of any influencing factors because different characteristics exhibited by individual databases can sometimes generate conflicting bibliometric results. This was true among INIS, ECD, WOS, and SCOPUS when looking at trends especially between 5-year periods. (author)

Collaborative analysis for certification of zirconium and zirconium base alloy reference materials JAERI-Z11 to Z16

International Nuclear Information System (INIS)

1985-03-01

The second Sub-Committee on Zircaloy Analysis was organized in April 1978, under the Committee on Analytical Chemistry on Nuclear Fuels and Reactor Materials, JAERI, for the renewal of zirconium and zirconium base alloy certified reference materials (CRMs). The Sub-Committee carried out collaborative analysis among 13 participating laboratories for the certification of the CRMs, JAERI-Z11 to Z18, after development, improvement and evaluation of analytical methods during the period of May 1978 to June 1982. As the result of the collaborative analysis, the certified value was given for 18 elements (Sn, Fe, Ni, Cr, B, Cd, U, Cu, Co, Mn, Pb, Al, Ti, Si, Mo, W, Hf, C) in the CRMs. The first part of this report includes general discussion, the second part principles of certification, the third part development and verification of analytical methods, and the fourth part evaluation of analytical results on 17 elements. Preparation of Z11 to Z18, and certification for carbon in JAERI-Z17 and Z18 were reported separately in JAERI-M 83-241 and M 83-035, respectively. (author)

Multifractality in edge localized modes in Japan Atomic Energy Research Institute Tokamak-60 Upgrade

International Nuclear Information System (INIS)

Bak, P.E.; Asakura, N.; Miura, Y.; Nakano, T.; Yoshino, R.

2001-01-01

The temporal losses of confinement during edge localized modes in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade (JT-60U) show multifractal scaling and the spectra are generally smooth, but in some cases there are signs of discontinuous derivatives. Dynamics of the Sugama-Horton model, interpreted as edge localized modes, also display multifractal scaling. The spectra display singularities in the derivative, which can be interpreted as a phase transition. It is argued that the multifractal spectra of edge localized modes can be used to discriminate between different experimental discharges and validate edge localized mode models

Report of cooperative research programs in the field of ion-beam breeding between Japan Atomic Energy Agency and Malaysian Nuclear Agency (Bilateral cooperative research)

International Nuclear Information System (INIS)

Ahmad, Zaiton; Oono, Yutaka

2016-03-01

This report summarizes Bilateral Cooperative Research between Japan Atomic Energy Agency and Malaysian Nuclear Agency (a representative of the Government of Malaysia) implemented from 2002 to 2012 under 'THE IMPLEMENTING ARRANGEMENT BETWEEN THE GOVERNMENT OF MALAYSIA AND THE JAPAN ATOMIC ENERGY AGENCY ON THE RESEARCH COOPERATION IN THE FIELD OF RADIATION PROCESSING'. The research activities in two Cooperative Research Programs, 'Mutation Induction of Orchid Plants by Ion Beams' and 'Generating New Ornamental Plant Varieties Using Ion Beams' performed 2002-2007 and 2007-2012, respectively, are contained. The lists of steering committee meetings, irradiation experiments, and publications/presentations of each program are also attached in the Appendixes. (author)

Development of EC technology in JAERI

International Nuclear Information System (INIS)

Sakamoto, Keishi; Takahashi, Koji; Kasugai, Atsushi; Hayashi, Kenichi; Ikeda, Yoshitaka; Kajiwara, Ken; Fujii, Tsuneyuki; Imai, Tsuyoshi; Kariya, Tsuyoshi; Mitsunaka, Yoshika

2003-01-01

Recent progress of electron cyclotron (EC) heating and current drive technologies in JAERI is reported. In 170 GHz gyrotron development, 0.9 MW/9.2 sec (efficiency: 43%), 0.5 MW/30 sec (46%), etc, have been demonstrated. As for 110 GHz gyrotron, 1 MW/5 sec and 1.2 MW/4.1 sec were obtained. Using four 110 GHz gyrotrons, a 3 MW power injection into JT- 60U plasma was carried out. In parallel, a launcher design and its development that includes neutron irradiation of the launcher components and a remote steering launcher are underway for ITER application. (authors)

Application of a fiber optic grating strain sensor for the measurement of strain under irradiation environment

International Nuclear Information System (INIS)

Kaji, Yoshiyuki; Matsui, Yoshinori; Kita, Satoshi; Ide, Hiroshi; Tsukada, Takashi; Tsuji, Hirokazu

2002-01-01

In the Japan Atomic Energy Research Institute (JAERI), in-pile strain measurement techniques have been developed using the Japan Materials Testing Reactor (JMTR). In order to evaluate the performance of fiber optic grating sensors under irradiation environment, heat-up and performance tests at elevated temperatures before irradiation and in-pile tests were performed in JMTR. It was determined that it is possible to measure strain under irradiation environment below 1x10 23 n m -2 (E>1 MeV) by a fiber optic grating sensor, because in-pile temperature characteristics were in good agreement with out-of-pile test results

Remote handling technology for nuclear fuel cycle facilities

International Nuclear Information System (INIS)

Sakai, Akira; Maekawa, Hiromichi; Ohmura, Yutaka

1997-01-01

Design and R and D on nuclear fuel cycle facilities has intended development of remote handling and maintenance technology since 1977. IHI has completed the design and construction of several facilities with remote handling systems for Power Reactor and Nuclear Fuel Development Corporation (PNC), Japan Atomic Energy Research Institute (JAERI), and Japan Nuclear Fuel Ltd. (JNFL). Based on the above experiences, IHI is now undertaking integration of specific technology and remote handling technology for application to new fields such as fusion reactor facilities, decommissioning of nuclear reactors, accelerator testing facilities, and robot simulator-aided remote operation systems in the future. (author)

A review of fast reactor program in Japan (April 2001 - March 2002)

International Nuclear Information System (INIS)

Nagata, T.; Ieda, Y.

2002-01-01

This report describes the research and development activities on fast reactors in Japan thru April 2001 to March 2002. In December 2001, the Cabinet decided the Plan for Reorganization of Government-funded Corporations including the merger of JNC and the Japan Atomic Energy Research Institute (JAERI). A law to set up a new entity is supposed to be submitted to the National Diet by the Japanese Fiscal Year (JFY) 2004. In the Experimental Fast Reactor Joyo, thirty-five duty cycle operations and thirteen special tests with the MK-II core were completed by June 2000 without any fuel pin failures or serious plant trouble. The reactor is currently being upgraded to the MK-III core. Though a fire broke out in the maintenance building of Joyo in October 2001, the Mk-III construction work was restarted in February 2002. In the Prototype Fast Breeder Reactor Monju, countermeasures against sodium leakage have already been drawn up based on Monju comprehensive safety review. The safety licensing examination for the plant modification of Monju is undergoing. As for the Feasibility Study on Commercialized Fast Reactor Cycle Systems, JFY2001 was the first year of its second phase. A three-year period from JFY2001 to 2003 is the initial term of this phase. During this term, research activities are being focused on the design of the candidate concepts and fundamental tests of key technologies. An interim summary of these activities will be checked and reviewed, and based on the results; the research for JFY 2004 to 2005 will be conducted in order to narrow down the number of alternatives for the fast reactor cycle. (author)

Current status of JAERI-Mutsu Tandetron

International Nuclear Information System (INIS)

Kitamura, Toshikatsu; Aramaki, Takafumi; Mizutani, Yoshihiko; Togawa, Orihiko

2001-01-01

Tandetron Accelerator Mass Spectrometer was installed at Mutsu research establishment, Japan Atomic Energy Institute, in 1997 for the purpose of the study of the radionuclide transfer in marine environment. The carbon line started full operation in December 1999, whereas the iodine line was tested for its precision using heavy ion detectors in 1999. The operation experience since 1999 and the state-of-art of the facility, and results from the precision tests of the iodine line are described. The tests were performed in order to ensure the alignment of the iodine line. The C-12/C-14 measurement of IAEA standard sample C-1, seawater samples from the North Pacific and the Sea of Okhotsk was performed as well. (A. Yamamoto)

A state-of-the art on decommissioning of nuclear facilities in Japan

International Nuclear Information System (INIS)

Park, Seung Kook; Kim, Hee Reyoung; Chung, Un Soo; Jung, Ki Jung

2002-05-01

While proceeding the KRR-1 and 2 decommissioning project, we are carried out study for the state of the art on decommissioning of nuclear facilities in Japan. Also, we are studied for the research reactors and commercial power plant that has the object of decommissioning, and for the government and the organization related on decommissioning operation. We are investigated for decommissioning activities of nuclear facilities achieved by JAERI, and collected the information and data for decommissioning techniques and computational system through the JPDR(Japan Power Demonstration Reactor) decommissioning activities. Such techniques are applying for Tokai Power Station began the decommissioning project from last year, and for Fugen Nuclear Power Station to be planned the decommissioning from 2003. Recent techniques for decommissioning was acquired by direct contact. The status of the treatment for decommissioning waste and the disposal facility for the very low-level radioactive concrete wastes was grasped

Annual report of the Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

1993-01-01

JAERI has conducted nuclear safety research in conformity with the national five year plan for safety research on nuclear installations, radioactive waste management and environmental radiation, and the research on engineering safety and environmental safety is described. In the research on high temperature engineering, the construction of the high temperature test reactor, the research on its fuel and materials, the reactor engineering, high temperature structures, safety and heat transfer, and nuclear heat application are reported. On the research and development of nuclear fusion, core plasma, core engineering technology and so on have been studied, and the engineering design activities for the international thermonuclear experimental reactor are in progress. On the research and development of radiation application, radiation processing, advanced radiation application and radioisotope production have been researched. The experiment on the nuclear ship 'Mutsu' was completed, and the research on the design of improved marine reactors has been advanced. Fundamental and related researches on various subjects are also reported. (K.I.)

JSPS-CAS core university program seminar. Proceedings of Japan-China joint seminar on atomic and molecular processes in plasma

International Nuclear Information System (INIS)

Koike, Fumihiro; Dong Chenzhong

2008-03-01

As one of the activities of JSPS-CAS Core University Program, Japan-China Joint Seminar on Atomic and Molecular Processes in Plasma was held on October 8 - 12, 2007 in Dunhuang, China. The total number of the officially registered participants was 41, in which 12 from Japan, 25 from China, and 4 from EU. And this seminar is an extension of the last seminar that was held on March 6 - 11, 2004 in Lanzhou, China. In the nuclear fusion plasma, there are quite a variety of atomic processes such as ionization, excitation, radiative recombination, non-radiative recombination (di-electronic recombination, collisional electron transfer), cascade radiation, and cascade Auger decay over the wide range of plasma temperature. The knowledge of such processes is indispensable for the evaluation and improvement of the plasma properties, which is desirable to be investigated by international collaboration groups. The present seminar constitutes one of such activities to realize the above stated aim; especially it has given an opportunity for the collaborative workers to illustrate their achievements. The 32 of the presented papers are indexed individually. (J.P.N.)

Present status of nuclear power safety studies in JAERI

International Nuclear Information System (INIS)

1989-01-01

Japan Atomic Energy Research Institute carries out the safety research required for ensuring safety accompanying the development and utilization of atomic energy, dividing the roles with industrial circules, universities and other public research institutes. First, it carries out the research based on the yearly program of safety research, in which the subjects of safety research that the state should execute are decided. Next, it carries out a series of the safety verification test on atomic energy facilities entrusted by the state using the special account for power source development promotion countermeasures. Besides, it carries out the safety research on the specific subjects entrusted by outside organizations. The object and range of atomic energy safety at present are roughly divided into four fields, that is, nuclear power stations, nuclear fuel facilities, waste treatment and disposal, and environmental radioactivity. In order to advance the research effectively, in addition to the generalization department and the execution department, various committees are organized. In 1988, about 260 persons engaged in these four research fields, and the budget for fiscal year 1988 was about 17.4 billion yen. (K.I.)

Outcome of cooperative program between JAEA and US DOE on decommissioning

International Nuclear Information System (INIS)

Shimada, Taro; Shiraishi, Kunio; Tachibana, Mitsuo; Ishigami, Tsutomu

2009-07-01

The Japan Atomic Energy Agency (JAEA: the former Japan Atomic Energy Research Institute) has been collecting wide variety of information on decommissioning nuclear facilities by the cooperative program with US Department of Energy (DOE) since 1988. In the course of the cooperation, the cooperative program has continued under the newly established specific memorandum in the field of decontamination and decommissioning nuclear facilities since 2001 on the framework agreement of USDOE and JAERI. On the other hand, the US DOE environmental management program, which was initiated in 1989, has developed resulting in achievement of dismantlement and decontamination and cleanup of nuclear facilities mainly used for Manhattan project and demonstration of various technologies developed for this program. In the cooperative activities, information on decommissioning activities including innovated technology developments has been exchanged with CP-5 and Mound plant as designated main facilities of DOE, and with JRR-2 and the reprocessing test facility of JAERI. The experiences and technologies applied in the environmental management program are expected to contribute to planning and implementing decommissioning nuclear facilities in JAEA. This report describes the summary of the information on decommissioning activities and technology development and deployment of the environmental management program in DOE obtained through the cooperation under the specific memorandum agreement. (author)

Japan's plutonium economy

International Nuclear Information System (INIS)

Hecht, M.M.

1994-01-01

Japan's plutonium economy is based on the most efficient use of nuclear energy, as envisioned under the Atoms for Peace program of the 1950s and 1960s. The nuclear pioneers assumed that all nations would want to take full advantage of atomic energy, recycling waste into new fuel to derive as much energy as possible from this resource

Development programs on decommissioning technology for reactors and fuel cycle facilities in Japan

International Nuclear Information System (INIS)

Fujiki, K.

1992-01-01

The Science and Technology Agency (STA) of Japan is promoting technology development for decommissioning of nuclear facilities by entrusting various research programs to concerned research organisations: JAERI, PNC and RANDEC, including first full scale reactor decommissioning of JPDR. According to the results of these programs, significant improvement on dismantling techniques, decontamination, measurement etc. has been achieved. Further development of advanced decommissioning technology has been started in order to achieve reduction of duration of decommissioning work and occupational exposures in consideration of the decommissioning of reactors and fuel cycle facilities. (author) 5 refs.; 7 figs.; 1 tab

Data list of nuclear power plants of pressurized-water reactor type in Japan

International Nuclear Information System (INIS)

Izumi, Fumio; Harayama, Yasuo

1981-08-01

This report has collected and compiled the data concerning performances, equipments and installations for nuclear power plants of the pressurized-water reactor type in Japan. The data used in the report are based on informations that were collected before December in 1980. The report is edited by modifing changes of the data appeared after publication of 1979 edition (JAERI-M 8947), and extending the data-package to cover new plants proposed thereafter. All data have been processed and tabulated with a computer program FREP, which has been developed as an exclusive use of data processing. (author)

JAERI tandem, linac and V.D.G. annual report 1984

International Nuclear Information System (INIS)

Shikazono, Naomoto; Iizumi, Masashi; Ishii, Mitsuhiko; Kawarasaki, Yuuki; Murayama, Michio; Okashita, Hiroshi; Ozawa, Kunio; Suto, Yoichi

1985-07-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1984 to March 31, 1985. Summary reports of 53 papers, publications, personnel and a list of cooperative researches with universities are contained. (author)

JAERI tandem, linac and V.D.G. annual report 1987

International Nuclear Information System (INIS)

1988-10-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1987 to March 31, 1988. Summary reports of 49 papers, and list of publications, personnel and cooperative researches with universities are contained. (author)

JAERI TANDEM, LINAC and V.D.G. annual report 1989

International Nuclear Information System (INIS)

1990-09-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1989 to March 31, 1990. Summary reports of 49 papers, and list of publications, personnel and cooperative researches with universities are contained. (author)

JAERI Tandem, LINAC and V.D.G. annual report 1986

International Nuclear Information System (INIS)

1987-08-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1986 to March 31, 1987. Summary reports of 55 papers, and list of publications, personnel and cooperative researches with universities are contained. (author)

First results of beam generation test for JAERI AVF cyclotron

International Nuclear Information System (INIS)

Tachikawa, T.; Hayashi, Y.; Ishii, K.

1992-01-01

The performance of JAERI AVF cyclotron was investigated with several kinds of ions in the wide energy range. The 90 MeV protons of 10 μA intensity was successfully extracted for the first time by the model 930 cyclotron. The feature of beam chopping system is also presented. (author)

JAERI tandem, LINAC and V.D.G. annual report 1988

International Nuclear Information System (INIS)

1989-09-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1988 to March 31, 1989. Summary reports of 45 papers, and list of publications, personnel and cooperative researches with universities are contained. (author)

JAERI TANDEM, LINAC and V.D.G. annual report, 1985

International Nuclear Information System (INIS)

1986-08-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator, the electron linear accelerator and the Van de Graaff accelerator from April 1, 1985 to March 31, 1986. Summary reports of 52 papers, and list of publications, personnel and cooperative researches with universities are contained. (author)

Design studies of Tokamak power reactor in JAERI

International Nuclear Information System (INIS)

Tone, T.; Nishikawa, M.; Tanaka, Y.

1985-01-01

Recent design studies of tokamak power reactor and related activities conducted in JAERI are presented. A design study of the SPTR (Swimming-Pool Type Reactor) concept was carried out in FY81 and FY82. The reactor design studies in the last two years focus on nuclear components, heat transport and energy conversion systems. In parallel of design studies, tokamak systems analysis code is under development to evaluate reactor performances, cost and net energy balance

International development of Japan's Nuclear Industry. Indispensable Japan-U.S. cooperation

International Nuclear Information System (INIS)

Saigo, Masao

2006-01-01

It is significant to internationally develop the nuclear power plants technology that has been fostered by Japan's nuclear industry. It is also important to work with taking the degree of development of nuclear power plants of the recipient country into consideration. ''Forum on International Development of Nuclear Industry'' organized by the Japan Atomic Industrial Forum, Inc. (JAIF) proposed it would be indispensable for a Japan's nuclear industry to establish a Japan-U.S. Cooperation with the support of Government in order to develop the nuclear technology internationally. In November 2005, the investigating team including utilities and nuclear industry visited U.S. and exchanged opinions on its possibility. Investigating results and their evaluation were described. (T.Tanaka)

The situation of Chinese atomic energy and cooperation

International Nuclear Information System (INIS)

Nagasaki, Takao

2003-01-01

China will have 8.7 million kW atomic energy in 2005. Japan will complete with China in a sale war of international atomic energy and domestic power source. The position, development and situation of Chinese atomic energy and the future nuclear fuel cycle are reported. 5.4 million kW of 7 atomic power plants in China and 45.9 million kW of 53 plants in Japan are running. 3.3 million kW of 4 plants in China and 4 million kW of 4 plants in Japan are building. New type reactor, the fast breeder and high temperature gas-cooled reactor are developing. Radiation exposure to food, radiation therapy, Radio-pharmaceuticals, polymerization and treatment of sewage and smoke are carried out. The situation of atomic energy co-operation between China and Japan and other countries are stated. Japan has to change to advance mutual interests type co-operation with China. Construction of the nuclear community in Asia area and development of the international long big project are proposed. (S.Y.)

Levels of tritium concentration in the environmental samples around JAERI TOKAI

International Nuclear Information System (INIS)

Matsuura, K.; Sasa, Y.; Nakamura, C.; Katagiri, H.

1995-01-01

By the operation of research reactors, tritium-handling facilities, nuclear power plants, and a reprocessing facility around JAERI TOKAI, tritium is released into the environment in compliance with the regulatory standards. To investigate the levels of tritium concentration in environmental samples around JAERI, rain, air (vapor and hydrogen gas), and tissue-free water of pine needles were measured and analyzed from 1984 to 1993. Sampling locations were determined by taking into consideration wind direction, distance from nuclear facilities, and population distribution. The NAKA site (about 6 km west-northwest from the Tokai site) was also selected as a reference point. Rain and tissue-free water of pine needles were sampled monthly. For air samples, sampling was carried out for two weeks by using the continuous tritium sampler. After the pretreatment of samples, tritium concentrations were measured by a low background liquid scintillation counter (detection limit 0.8 Bq/l). Annual mean tritium concentrations in rain observed at six points for 10 years was 0.8 to 8.9 Bq/l, which decreased with distance from the nuclear facilities. Tritium concentrations in rain obtained at Chiba City were around 0.8 Bq/l (1987-1988) and those at the NAKA site were 0.8 to 3.8 Bq/l. Annual mean HTO concentrations in air at three points for 10 years were 9.2 x 10 -2 to 1.1 Bq/m 3 , although HT concentrations in air, ranging from 1.7 x 10 -2 to 5.8 x 10 -2 Bq/m 3 , were not influenced by the operation of the nuclear facilities. Annual mean tritium concentrations in tissue-free water of pine needles at four points for 10 years were 1.4 to 31 Bq/l. Those at the NAKA site ranging from 1.4 to 6.2 Bq/l were in good agreement with the reported value by Takashima of 0.78 to 3.0 Bq/l at twenty-one locations in Japan. Monthly mean HTO concentrations in air for 10 years showed a good correlation with absolute humidity, while other samples showed no seasonal variation. Higher level tritium

Summaries of research and development activities by using JAEA computer system in FY2005. April 1, 2005 - March, 31, 2006

International Nuclear Information System (INIS)

2006-10-01

Center for Promotion of Computational Science and Engineering (CCSE) of Japan Atomic Energy Agency (JAEA) installed large computer systems including super-computers in order to support research and development activities in JAEA. CCSE operates and manages the computer system and network system. This report presents usage records of the JAERI computer system and the big users' research and development activities by using the computer system in FY2005 (April 1, 2005 - March 31, 2006). (author)

Summary of the 4th workshop on the reduced-moderation water reactor

International Nuclear Information System (INIS)

Nakatsuka, Toru; Ishikawa, Nobuyuki; Iwamura, Takamichi

2001-09-01

The research on Reduced-Moderation Water Reactors (RMWRs) has been performed in JAERI for the development of future innovative reactors. The workshop on the RMWRs has been held every year since fiscal 1997 aimed at information exchange between JAERI and other organizations such as universities, laboratories, utilities and vendors. The 4th workshop was held on March 2, 2001 under the joint auspices of JAERI and North Kanto branch of Atomic Energy Society of Japan. The workshop began with three lectures on recent research activities in JAERI entitled 'Recent Situation of Research on Reduced-Moderation Water Reactor', 'Analysis on Electricity Generation Costs of Reduced Moderation Water Reactors' and 'Reprocessing Technology for Spent Mixed-Oxides Fuel from LWR'. Then five lectures followed: 'Micro Reactor Physics of MOX Fueled LWR' which shows the recent results of reactor physics, Fast Reactor Cooled by Supercritical Light Water' which is another type of reduced-moderation reactor, 'Phase 1 of Feasibility Studies on Commercialized Fast Breeder Reactor Cycle System' mainly conducted by Japan Nuclear Cycle Development Institute (JNC), 'Integral Type Small PWR with Stand-alone Safety' which is intended to suit for the future consumers' needs, and Utilization of Plutonium in Reduced-Moderation Water Reactors' which dictates benefits of plutonium utilization with RMWRs. This report includes the original papers presented at the workshop and summaries of the questions and answers for each lecture, as well as presentation handouts, program and participant list as appendixes. The 8 of the presented papers are indexed individually. (J.P.N.)

On recycling of nuclear fuel in Japan

International Nuclear Information System (INIS)

1992-01-01

In Japan, atomic energy has become to accomplish the important role in energy supply. Recently the interest in the protection of global environment heightened, and the anxiety on oil supply has been felt due to the circumstances in Mideast. Therefore, the importance of atomic energy as an energy source for hereafter increased, and the future plan of nuclear fuel recycling in Japan must be promoted on such viewpoint. At present in Japan, the construction of nuclear fuel cycle facilities is in progress in Rokkasho, Aomori Prefecture. The prototype FBR 'Monju' started the general functional test in May, this year. The transport of the plutonium reprocessed in U.K. and France to Japan will be carried out in near future. This report presents the concrete measures of nuclear fuel recycling in Japan from the long term viewpoint up to 2010. The necessity and meaning of nuclear fuel recycling in Japan, the effort related to nuclear nonproliferation, the plan of nuclear fuel recycling for hereafter in Japan, the organization of MOX fuel fabrication in Japan and abroad, the method of utilizing recovered uranium and the reprocessing of spent MOX fuel are described. (K.I.)

Scaling of the optical parameters for the JAERI tandem accelerator

International Nuclear Information System (INIS)

Hanashima, S.; Minehara, E.

1986-01-01

A scaling rule of the beam optical parameters was adopted for computer-aided beam transport in the JAERI tandem accelerator. Tests have shown that the computer program can transport a specified beam in a short time using a reference parameter set. Problems of ion source control and accuracy of the optical devices are also discussed

Simulation study of intentional tritium release experiments in the caisson assembly for tritium safety at the TPL/JAERI

International Nuclear Information System (INIS)

Iwai, Y.; Hayashi, T.; Kobayashi, K.; Nishi, M.

2001-01-01

At the Tritium Process Laboratory (TPL) in Japan Atomic Energy Research Institute (JAERI), Caisson assembly for tritium safety study (CATS) with 12 m 3 of large airtight vessel (Caisson) was fabricated for confirmation and enhancement of fusion reactor safety to estimate the tritium behavior in the case, where the tritium leak accident should happen. One of the principal objectives of the present studies is the establishment of simulation method to predict the tritium behavior after the tritium leak accident should happen in a ventilated room. As for the understanding of initial tritium behavior until the tritium concentration become steady, the precise estimation of local flow rate in a room and time-dependent release behavior from the leak point are essential to predict the tritium behavior by simulation code. The three-dimensional eddy flow model considering, tritium-related phenomena was adopted to estimate the local flow rate in the 50 m 3 /h ventilated Caisson. The time-dependent tritium release behavior from the sample container was calculated by residence time distribution function. The calculated tritium concentrations were in good agreement with the experimental observations. The primary removal tritium behavior was also investigated by another code. Tritium gas concentrations decreased logarithmically to the time by ventilation. These observations were understandable by the reason that the flow in the ventilated Caisson was regarded as the perfectly mixing flow. The concentrations of tritiated water measured, and indications of tritium concentration by tritium monitors became gradually flat. This phenomena called 'tritium soaking effect' was found to be reasonably explained by considering the contribution of the exhaustion velocity by ventilation system, and the adsorption and desorption reaction rate of tritiated water on the wall material which is SUS 304. The calculated tritium concentrations were in good agreement with the experimental observations

The future of nuclear power: Looking ahead. Address at the Japan Atomic Industrial Forum, Sendai, 12 April 1999

International Nuclear Information System (INIS)

ElBaradei, M.

1999-01-01

In his address at the Japan Atomic Industrial Forum (Sendai, 12 April 1999), the Director General of the IAEA described the role of the IAEA for nuclear power development, emphasizing the following aspects: nuclear power and the global energy mix, nuclear safety and the importance of public confidence, economic competitiveness and the role of research and development, and the importance of nuclear verification and prevention of illicit trafficking

Annual report of the Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute (No. 8)

International Nuclear Information System (INIS)

1975-10-01

This report describes research activities in Osaka Laboratory for Radiation Chemistry, JAERI during the one year period from April 1, 1974 through March 31, 1975. The major research field covers the following subjects: studies related to reactions of carbon monoxide and hydrogen; polymerization studies under the irradiation of high dose rate electron beams; modification of polymers; fundamental studies on polymerization, degradation, crosslinking, and grafting. (auth.)

Setting of cesium residual ratio of molten solidified waste produced in Japan Atomic Power Company Tokai and Tokai No.2 Power Stations

International Nuclear Information System (INIS)

2013-02-01

JNES investigated the appropriateness of a view of the Japan Nuclear Fuel Co. on cesium residual content and the radioactivity measurement precision regarding the molten solidified (with lowered inorganic salt used) radioactive wastes which were produced from Japan Atomic Power Company Tokai and Tokai No. 2 Power Stations. Based on the written performance report from the request and past disposal confirmation experience, a view of the JNFC is confirmed as appropriate that setting of 15% cesium residual ratio for molten solidified with volume ratio larger than 4% and less than 10% cases. (S. Ohno)

JAERI tandem annual report 2002. April 1, 2002 - March 31, 2003

International Nuclear Information System (INIS)

Takeuchi, Suehiro; Oshima, Masumi; Ishii, Tetsuro; Nagame, Yuichiro; Chiba, Satoshi; Sataka, Masao

2003-11-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator and the Van de Graaff accelerator from April 1, 2002 to March 31, 2003. Summary reports of 54 papers, and lists of publication, personnel and cooperative research with universities are contained. (author)

JAERI TANDEM annual report 2000. April 1, 2000 - March 31, 2001

Energy Technology Data Exchange (ETDEWEB)

Takeuchi, Suehiro; Ikezoe, Hiroshi; Chiba, Satoshi; Nagame, Yuichiro; Sataka, Masao; Iwamoto, Akira [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment] (eds.)

2001-11-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator and the Van de Graaff accelerator from April 1, 2000 to March 31, 2001. Summary reports of 46 papers, and lists of publication, personnel and cooperative research with universities are contained. (author)

JAERI tandem annual report 2001. April 1, 2001 - March 31, 2002

Energy Technology Data Exchange (ETDEWEB)

Takeuchi, Suehiro; Ikezoe, Hiroshi; Chiba, Satoshi; Nagame, Yuichiro; Sataka, Masao; Iwamoto, Akira (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2002-11-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator and the Van de Graaff accelerator from April 1, 2001 to March 31, 2002. Summary reports of 48 papers, and lists of publication, personnel and cooperative research with universities are contained. (author)

JAERI tandem annual report 1999. April 1, 1999 - March 31, 2000

Energy Technology Data Exchange (ETDEWEB)

NONE

2000-11-01

This annual report describes research activities which have been performed with the JAERI tandem accelerator and the Van de Graaff accelerator from April 1, 1999 to March 31, 2000. Summary reports of 49 papers, and lists of publication, personnel and cooperative research with universities are contained. (author)

Current status of research and development at Japan Atomic Energy Agency

International Nuclear Information System (INIS)

2015-01-01

This paper introduces the current state and future prospects of Japan Atomic Energy Agency, with a focus on the main achievements of the research and development as of November FY2014. The items of research and development are as follows; (1) research and development related to measures for the accident of Fukushima Daiichi Nuclear Power Station, (2) technological assistance for ensuring safety in the research and development and utilization of nuclear power, (3) research science related to the research and development and utilization of nuclear power, (4) practical application of FBR cycle, (5) technological development related to back-end measures, (6) research and development of technological system to retrieve nuclear fusion energy, and (7) common projects (computational science / engineering / research, technological development and policy assistance on nuclear non-proliferation and nuclear security, and various activities such as dissemination of the fruits of research and development, human resource development, and technological cooperation). (A.O.)

Survey on usage of electronic journals in Japan Atomic Energy Agency

International Nuclear Information System (INIS)

Ishikawa, Masashi; Fukazawa, Takeyasu

2008-05-01

Survey on usage of electronic journals was performed quantitatively by analyzing downloads accesses data to the 1,783 journals titles published by Elsevier in Japan Atomic Energy Agency (JAEA), 2006. Although JAEA researchers are interested in 1,028 journal titles among physics, chemistry, engineering, medicine, social sciences etc., it is found that 80% of total downloads was occupied by only 102 journal titles. To satisfy researcher's needs for electronic journals effectively, identification the core journals by librarians based on user's needs is rational way in cost. By shifting from print to electronic journals, the number of users increased by 30% and the number of papers read by researchers increased by 7 times. It is also found that many of researchers do not use SD (Science Directs) useful functions such as searching, linking to other bibliographic records, and alerting new information of electronic journals. To inform the useful functions to researchers by librarians is necessary. (author)

Country report from Japan

Energy Technology Data Exchange (ETDEWEB)

Sekine, Toshiaki [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

1998-10-01

The status on the production of radioisotopes by JAERI is briefly discussed. JAERI has withdrawn from the routine production of the processed unsealed radioisotopes, and is going into being more research-oriented. Recent developments include: a {sup 99m}Tc generator for (n, {gamma}){sup 99}Mo; positron emitters for plant study; pharmaceuticals with radioactive rhenium; brachytherapy sources. A plan of producing radioisotopes with a high power proton accelerator of the Neutron Science Project is presented. (author)

Search for EC-decayed neutron-deficient actinide isotopes using gas-jet coupled JAERI-ISOL

Energy Technology Data Exchange (ETDEWEB)

Tsukada, Kazuaki [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1997-07-01

To study the nuclear properties of unknown neutron deficient actinide isotopes which decay mainly via orbital electron capture (EC), we have developed a composite system consisting of a gas-jet transport apparatus and a thermal ion-source at the JAERI-ISOL. With this system, search for {sup 236}Am produced in the {sup 235}U({sup 6}Li, 5n) reaction has been performed. Pu KX-rays associated with the EC decay of {sup 236}Am are observed at the mass-236 fraction. The half-life of {sup 236}Am is evaluated to be 4.4min. The outline of the gas-jet coupled JAERI-ISOL system and typical performance are given. (author)

Research and Development programs for HTGRs in JAERI

Energy Technology Data Exchange (ETDEWEB)

Nishiguchi, Isoharu; Saito, Sinzo [Department of HTTR Project, Japan Atomic Energy Research Institute (Japan)

1990-07-01

Since 1969, JAERI has conducted research and development (R and D) programs for High-Temperature Gas-Cooled Reactors (HTGR). And the High Temperature engineering Test Reactor (HTTR), which will be the first High Temperature Gas Cooled Reactor (HTGR) in Japan, is under licensing process now. In this paper, some of the results of R and D are outlined in the following fields which are closely connected with the HTTR design, that is: i) fuel; ii) nuclear design; iii) thermal-hydraulic design; iv) graphite structure and v) high temperature metal structure. In the field of fuel, extensive investigations have been performed to develop the fabrication technology of coated particle fuel (cpf). In parallel, data of coated fuel particle failure and fission product release in in- and ex-reactor experiments as well as mechanical properties data were obtained and irradiation tests have been done using the Oarai Gas Loop No.1 (OGL-1) to verify the integrity of mass-produced fuel. Concerning the nuclear design, critical experiments were conducted using the Very High-Temperature Reactor Critical Assembly (VHTRC). Also carried out were hydrodynamical and thermal experiments using the Helium Engineering Demonstration Loop (HENDEL). On the graphite structures which compose the reactor internals, design criteria have been developed based on ASME BandPV Code Section III Div.2, subsection CE and design data have been accumulated on a domestic graphite material. High temperature metal structure is also one of major subjects of R and D for HTGRs. Hastelloy XR, which is a modified version of Hastelloy X, was developed and various tests have been conducted which include creep tests, creep-fatigue tests, etc. to establish design criteria and allowables. Component tests of the Intermediate Heat Exchanger (IHX) have been also performed. (author)

Research and Development programs for HTGRs in JAERI

International Nuclear Information System (INIS)

Nishiguchi, Isoharu; Saito, Sinzo

1990-01-01

Since 1969, JAERI has conducted research and development (R and D) programs for High-Temperature Gas-Cooled Reactors (HTGR). And the High Temperature engineering Test Reactor (HTTR), which will be the first High Temperature Gas Cooled Reactor (HTGR) in Japan, is under licensing process now. In this paper, some of the results of R and D are outlined in the following fields which are closely connected with the HTTR design, that is: i) fuel; ii) nuclear design; iii) thermal-hydraulic design; iv) graphite structure and v) high temperature metal structure. In the field of fuel, extensive investigations have been performed to develop the fabrication technology of coated particle fuel (cpf). In parallel, data of coated fuel particle failure and fission product release in in- and ex-reactor experiments as well as mechanical properties data were obtained and irradiation tests have been done using the Oarai Gas Loop No.1 (OGL-1) to verify the integrity of mass-produced fuel. Concerning the nuclear design, critical experiments were conducted using the Very High-Temperature Reactor Critical Assembly (VHTRC). Also carried out were hydrodynamical and thermal experiments using the Helium Engineering Demonstration Loop (HENDEL). On the graphite structures which compose the reactor internals, design criteria have been developed based on ASME BandPV Code Section III Div.2, subsection CE and design data have been accumulated on a domestic graphite material. High temperature metal structure is also one of major subjects of R and D for HTGRs. Hastelloy XR, which is a modified version of Hastelloy X, was developed and various tests have been conducted which include creep tests, creep-fatigue tests, etc. to establish design criteria and allowables. Component tests of the Intermediate Heat Exchanger (IHX) have been also performed. (author)

Research and development of grid computing technology in center for computational science and e-systems of Japan Atomic Energy Agency

International Nuclear Information System (INIS)

Suzuki, Yoshio

2007-01-01

Center for Computational Science and E-systems of the Japan Atomic Energy Agency (CCSE/JAEA) has carried out R and D of grid computing technology. Since 1995, R and D to realize computational assistance for researchers called Seamless Thinking Aid (STA) and then to share intellectual resources called Information Technology Based Laboratory (ITBL) have been conducted, leading to construct an intelligent infrastructure for the atomic energy research called Atomic Energy Grid InfraStructure (AEGIS) under the Japanese national project 'Development and Applications of Advanced High-Performance Supercomputer'. It aims to enable synchronization of three themes: 1) Computer-Aided Research and Development (CARD) to realize and environment for STA, 2) Computer-Aided Engineering (CAEN) to establish Multi Experimental Tools (MEXT), and 3) Computer Aided Science (CASC) to promote the Atomic Energy Research and Investigation (AERI). This article reviewed achievements in R and D of grid computing technology so far obtained. (T. Tanaka)

The TOF experiments and plans at JAERI-FNS

International Nuclear Information System (INIS)

Maekawa, Hiroshi

1982-01-01

A fast neutron source system (FNS) has been constructed at the Tokai Laboratory of Japan Atomic Energy Research Institute. The pulse width of d-d neutron from the FNS is 1.72 ns. The length of flight path is about 33 m. Prepared detectors are a NE-213 bank, a (B-10) 4 C-NaI bank, and Li-6, Li-7 glass scintillators. Various electronic circuits are provided. A DEC VAX- 11/780 computer is used for the data processing. The experiment to measure the angle-dependent leak spectra by Li 2 O and Li plate assemblies are designed and will be done in near future. (Kato, T.)

Thermal-hydraulic analysis of the Three Mile Island Unit 2 reactor accident with THALES code

International Nuclear Information System (INIS)

Hashimoto, Kazuichiro; Soda, Kunihisa

1991-10-01

The OECD Nuclear Energy Agency (NEA) has established a Task Group in the Committee on the Safety of Nuclear Installations (CSNI) to perform an analysis of Three Mile Island Unit 2 (TMI-2) accident as a standard problem to benchmark severe accident computer codes and to assess the capability of the codes. The TMI-2 Analysis Exercise was performed at the Japan Atomic Energy Research Institute (JAERI) using the THALES (Thermal-Hydraulic Analysis of Loss-of-Coolant, Emergency Core Cooling and Severe Core Damage) - PM1/TMI code. The purpose of the analysis is to verify the capability of THALES-PM1/TMI code to describe accident progression in the actual plant. The present paper describes the final result of the TMI-2 Analysis Exercise performed at JAERI. (author)

Proceedings of the 2003 symposium on nuclear data

International Nuclear Information System (INIS)

Ohsawa, Takaaki; Fukahori, Tokio

2004-04-01

The 2003 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 27th and 28th of November 2003. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented were 18 papers on topics of ADS development and nuclear data for transmutation, nuclear data needs for next generation reactors and future JENDL plan, frontier of nuclear physics studies and nuclear data measurements, advanced science study and nuclear data, nuclear data needs and activities in Asian region, future of nuclear data study and other subjects. In the poster session, presented were 25 papers concerning experiments, evaluations, benchmark tests and so on. Those presented papers are compiled in the proceedings. The 43 of the presented papers are indexed individually. (J.P.N.)

Comparison of auxiliary feedwater and EDRS operation during natural circulation of MRX

International Nuclear Information System (INIS)

Kim, Jae Hak; Park, Goon Cherl

1997-01-01

The MRX is an integral type ship reactor with 100 MWt power, which is designed by Japan Atomic Energy Research Institute. It is characterized by integral type PWR, in-vessel type control rod drive mechanism, water-filled containment vessel and passive decay heat removal system. Marine reactor should have high passive safety. Therefore, in this study, we simulated the loss of flow accident to verify the passive decay heat removal by natural circulation using RETRAN-03 code. auxiliary feed water systems are used for decay heat removal mechanism and results are compared with the loss of flow accident analysis using emergency decay heat removal system by JAERI. Results are very similar to case of EDRS 1 loop operation in JAERI analysis and decay heat is successfully removed by natural circulation

Proceedings of the 1992 symposium on nuclear data

International Nuclear Information System (INIS)

Baba, Mamoru; Nakagawa, Tsuneo

1993-03-01

The 1992 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 26th and 27th of November, 1992. The symposium was organized by Japanese Nuclear Data Committee and Nuclear Data Center, JAERI. In the oral session, a total of 15 papers were presented under the sessions of present status of revision work of JENDL-3, adjustment of group constants, nuclear data in medium energy region, nuclear data evaluation method, integral data analyses and topics. In the poster session, presented were 25 papers concerning experiments, evaluations and benchmark tests of nuclear data. Activities of JNDC working groups were also displayed in the poster session. All of the 40 papers except the reports from JNDC working groups are compiled in this proceedings. (author)

Proceedings of the 2004 symposium on nuclear data

International Nuclear Information System (INIS)

Tahara, Yoshihisa; Fukahori, Tokio

2005-03-01

The 2004 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 11th and 12th of November 2004. Japanese Nuclear Data Committee and Nuclear Data Center, JAERI organized this symposium. In the oral sessions, presented were 19 papers on topics of nuclear data for LWR and nuclear fuel cycle, nuclear data for ADS development, experiences from use of JENDL-3.3 and requests to JENDL-4, recent cross section measurements, nuclear data for life and material sciences, and nuclear data needs and activities in the World. In the poster session, presented were 21 papers concerning experiments, evaluations, benchmark tests, applications and so on. Those presented papers are compiled in the proceedings. The 40 of the presented papers are indexed individually. (J.P.N.)

Studies of high-level radioactive waste form performance at Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Banba, Tsunetaka; Kamizono, Hiroshi; Mitamura, Hisayoshi

1992-02-01

The recent studies of high-level radioactive waste form at Japan Atomic Energy Research Institute can be classified into the following three categories; (1) Study on the leaching behavior of the nuclear waste glass placing the focus on the alteration layer and the chemical composition of leachant for the prediction of the long-term corrosion of the waste glass. (2) Study on the radiation (alpha-radiation) effects which have relation to the long-term stability of the nuclear waste glass. (3) Study on the long-term self-irradiation damage of a SYNROC waste form using a curium-doped sample. In the present report, the recent results corresponding to the above categories are described. (author)

Fuel irradiation research of Japan at OECD Halden Reactor Project. Achievement of joint researches between JAERI and other organizations in the period from 1994 to 1996

International Nuclear Information System (INIS)

Uetsuka, Hiroshi; Nakamura, Jinichi; Kinoshita, Motoyasu

1998-01-01

JAERI has performed cooperative researches with many Japanese agencies and companies by means of the Halden Boiling Heavy Water Reactor (HBWR) which is located at Halden in Norway. These cooperative researches are carried out based on the contracts of the cooperative researches, which are revised every three years, in accordance with the renewal of the participation of JAERI to the OECD Halden Reactor Project. This report summaries the objectives, contents and the outlines of the achievements of the cooperative researches during the three years from 1994 January to 1996 December. During the period, ten cooperative researches had been carried out, and two of them had finished during the period and other eight researches has been continued to the next three year period. There are many research items, and most of them are irradiation test researches of advanced fuel and cladding concerned with the high burnup utilization of LWR fuel or MOX fuel irradiation researches to prepare for the introduction of Plutonium utilization in LWRs. The researches of fuel irradiation usually take long time because of the characteristics of these kind of research work, and three years are usually not enough to obtain some achievements from the irradiation tests. Therefore, eight tests have been continued after the three year period. In this report, the achievements of the continued researches to the next three year period are not final one but a kind of progress report. (author) kind of progress report. (author)

Transport calculation of thermal and cold neutrons using NMTC/JAERI-MCNP4A code system

International Nuclear Information System (INIS)

Iga, Kiminori; Takada, Hiroshi; Nagao, Tadashi.

1998-01-01

In order to investigate the applicability of the NMTC/JAERI-MCNP4A code system to the neutronics design study in the neutron science research project of JAERI, transport calculations of thermal and cold neutrons are performed with the code system on a spallation neutron source composed of light water cooled tantalum target with a moderator and a reflector system. The following neutronic characteristics are studied in the calculation : the variation of the intensity of neutrons emitted from a light water moderator or a liquid hydrogen with/without the B 4 C decoupler, which are installed to produce sharp pulse, and that dependent on the position of external source neutrons in the tantalum target. The calculated neutron energy spectra are reproduced well by the semi-empirical formula with the parameter values reliable in physical meanings. It is found to be necessary to employ proper importance sampling technique in the statistics. It is confirmed from this work that the NMTC/JAERI-MCNP4A code system is applicable to the neutronics design study of spallation neutron sources proposed for the neutron science research project. (author)

Transport calculation of thermal and cold neutrons using NMTC/JAERI-MCNP4A code system

Energy Technology Data Exchange (ETDEWEB)

Iga, Kiminori [Kyushu Univ., Fukuoka (Japan); Takada, Hiroshi; Nagao, Tadashi

1998-01-01

In order to investigate the applicability of the NMTC/JAERI-MCNP4A code system to the neutronics design study in the neutron science research project of JAERI, transport calculations of thermal and cold neutrons are performed with the code system on a spallation neutron source composed of light water cooled tantalum target with a moderator and a reflector system. The following neutronic characteristics are studied in the calculation : the variation of the intensity of neutrons emitted from a light water moderator or a liquid hydrogen with/without the B{sub 4}C decoupler, which are installed to produce sharp pulse, and that dependent on the position of external source neutrons in the tantalum target. The calculated neutron energy spectra are reproduced well by the semi-empirical formula with the parameter values reliable in physical meanings. It is found to be necessary to employ proper importance sampling technique in the statistics. It is confirmed from this work that the NMTC/JAERI-MCNP4A code system is applicable to the neutronics design study of spallation neutron sources proposed for the neutron science research project. (author)

Annual report on neutron scattering studies in JAERI, July, 1976 - June, 1977

International Nuclear Information System (INIS)

Hamaguchi, Yoshikazu; Iizumi, Masashi; Endoh, Yasuo

1977-11-01

Neutron scattering studies carried out by Division of Physics, JAERI and by several universities utilizing facilities in Tokai are reported for the period of July, 1976 to June, 1977. The report contains 39 short papers submitted by authors on their individual studies. (auth.)

Summary report of seismic PSA of BWR model plant

International Nuclear Information System (INIS)

1999-05-01

This report presents a seismic PSA (Probabilistic Safety Assessment) methodology developed at the Japan Atomic Energy Research Institute (JAERI) for evaluating risks of nuclear power plants (NPPs) and the results from an application of the methodology to a BWR plant in Japan, which is termed Model Plant'. The seismic PSA procedures developed at JAERI are to evaluate core damage frequency (CDF) and have the following four steps: (1) evaluation of seismic hazard, (2) evaluation of realistic response, (3) evaluation of component capacities and failure probabilities, and (4) evaluation of conditional probability of system failure and CDF. Although these procedures are based on the methodologies established and used in the United States, they include several unique features: (1) seismic hazard analysis is performed with use of available knowledge and database on seismological conditions in Japan; (2) response evaluation is performed with a response factor method which is cost effective and associated uncertainties can be reduced with use of modern methods of design calculations; (3) capacity evaluation is performed with use of test results available in Japan in combination with design information and generic capacity data in the U.S.A.; (4) systems reliability analysis, performed with use of the computer code SECOM-2 developed at JAERI, includes identification of dominant accident sequences, importance analysis of components and systems as well as the CDF evaluation with consideration of the effect of correlation of failures by a newly developed method based on the Monte Carlo method. The effect of correlation has been recognized as an important issue in seismic PSAs. The procedures was used to perform a seismic PSA of a 1100 MWe BWR plant. Results are shown as well as the insights derived and future research needs identified in this seismic PSA. (J.P.N.)

Present status of low-Z coating development in JAERI

International Nuclear Information System (INIS)

Nakamura, K.; Abe, T.; Obara, K.; Murakami, Y.

1986-01-01

In the JT-60 at JAERI, TiC-coated molybdenum and TiC-coated Inconel tiles are currently used as plasma interactive components. They have already been subjected to initial ohmic heating experiments and exhibited good adhesion characteristics under high heat flux conditions. The present article reviews a JAERI's coating development program for JT-60 experiments currently under way and for the next-step experiments. The program includes development and performance tests of the TiC-coated tiles, development of an in-situ coating technique for the repair of damaged surface of the tiles, and research on carbonization. Stress is laid on thermal shock and thermal fatigue tests of these coatings. In the thermal tests, adhesion between low-Z coatings and bulk materials have been investigated under high heat irradiation. TiC and TiN are used as coating material while Mo and Inconel 625 are employed as bulk material. Results are shown in this report concerning calculated temperature elavation of TiC/TiN/Mo due to hydrogen beam irradiation. As regards the irradiation time required for the melting of the substrate, experimental results mostly agree with calculations. Almost all coatings investigated are not exfoliated from the substrate until the melting of the substrate. (Nogami, K.)

Atomic and molecular data activities at JAERI, September 1999 - August 2001

International Nuclear Information System (INIS)

Shirai, T.

2001-01-01

Compilation and evaluation work has been carried out to make the 5th edition of Evaluated Atomic and Molecular (A+M) Data Library (JEAMDL-5) for fusion. The main objective of JEAMDL-5 is to evaluate A+M data relevant to divertor plasmas. Recent data activities and work in progress are briefly summarized. (author)

Characterization and evaluation studies on some JAERI dosimetry systems

International Nuclear Information System (INIS)

Kojima, T.; Sunaga, H.; Tachibana, H.; Takizawa, H.; Tanaka, R.

2000-01-01

Characterization and evaluation studies were carried out on some JAERI dosimetry systems, mainly alanine-ESR, in terms of the influence on the dose response of parameters such as orientation at ESR analysis, and the temperature during irradiation and analysis. Feasibility study for application of these dosimetry systems to electrons with energies lower than 4 MeV and bremsstrahlung (X rays) was also performed parallel to their reliability check through international dose intercomparison. (author)

[The Chinese nuclear test and 'atoms for peace' as a measure for preventing nuclear armament of Japan: the nuclear non-proliferation policy of the United States and the introduction of light water reactors into Japan, 1964-1968].

Science.gov (United States)

Yamazaki, Masakatsu

2014-07-01

Japan and the United States signed in 1968 a new atomic energy agreement through which US light-water nuclear reactors, including those of the Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company, were to be introduced into Japan. This paper studies the history of negotiations for the 1968 agreement using documents declassified in the 1990s in the US and Japan. After the success of the Chinese nuclear test in October 1964, the United States became seriously concerned about nuclear armament of other countries in Asia including Japan. Expecting that Japan would not have its own nuclear weapons, the US offered to help the country to demonstrate its superiority in some fields of science including peaceful nuclear energy to counter the psychological effect of the Chinese nuclear armament. Driven by his own political agenda, the newly appointed Prime Minister Eisaku Sato responded to the US expectation favorably. When he met in January 1965 with President Johnson, Sato made it clear that Japan would not pursue nuclear weapons. Although the US continued its support after this visit, it nevertheless gave priority to the control of nuclear technology in Japan through the bilateral peaceful nuclear agreement. This paper argues that the 1968 agreement implicitly meant a strategic measure to prevent Japan from going nuclear and also a tactic to persuade Japan to join the Nuclear Non -Proliferation Treaty.

Current status of JAERI program on development of ultra-trace-analytical technology for safeguards environmental samples

International Nuclear Information System (INIS)

Adachi, T.; Usuda, S.; Watanabe, K.

2001-01-01

Full text: In order to contribute to the strengthened safeguards system based on the Program 93+2 of the IAEA, Japan Atomic Energy Research Institute (JAERI) is developing analytical technology for ultra-trace amounts of nuclear materials in environmental samples, and constructed the CLEAR facility (Clean Laboratory for Environmental Analysis and Research) for this purpose. The development of the technology is carried out, at existing laboratories for time being, in the following fields: screening, bulk analysis and particle analysis. The screening aims at estimating the amounts of nuclear materials in environmental samples to be introduced into the clean rooms, and is the first step to avoid cross-contamination among the samples and contamination of the clean rooms themselves. In addition to ordinary radiation spectrometry, Compton suppression technique was applied to low energy γ- and X-ray measurements, and sufficient reduction in background level has been demonstrated. Another technique in examination is imaging-plate method, which is a kind of autoradiography and suitable for determination of radioactive-particle distribution in the samples as well as for semiquantitative determination. As for the bulk analysis, the efforts are temporally made on uranium in swipe samples. Preliminary examination for optimization of sample pre-treatment conditions is in progress. At present, ashing by low-temperature-plasma method gives better results than high-temperature ashing or acid leaching. For the isotopic ratio measurement, instrumental performance of inductively-coupled plasma mass spectrometry (ICP-MS) are mainly examined because sample preparation for ICP-MS is simpler than that for thermal ionization mass spectrometry (TIMS). It was found by our measurement that the swipe material (TexWipe TX304, usually used by IAEA) contains un-negligible uranium blank with large deviation (2-6 ng/sheet). This would introduce significant uncertainty in the trace analysis. JAERI

What is nuclear power in Japan?

Science.gov (United States)

Suzuki, Toshikazu

2011-03-01

The aggressive use of such non-fossil energy as the atomic energy with high power density and energy production efficiency is an indispensable choice aiming at the low-carbon society. There is a trial calculation that the carbon dioxide emission of 40000 ton can be suppressed by nuclear power generation by one ton of uranium. The basis of nuclear research after the Second World War in Japan was established by the researchers learnt in Argonne National Laboratory. In 2010, NPPs under operation are 54 units and the total electric generating power is 48.85GW. The amount of nuclear power generation per person of the people is 0.38kW in Japan, and it is near 0.34kW of the United States. However, the TMI accident and the Chernobyl disaster should have greatly stagnated the nuclear industry of Japan although it is not more serious than the United States. A lot of Japanese unconsciously associate a nuclear accident with the atomic bomb. According to the investigation which Science and Technology Agency carried out to the specialist in 1999, ``What will be the field where talent should be emphatically sent in the future?'' the rank of nuclear technology was the lowest in 32 fields. The influence of the nuclear industry stagnation was remarkable in the education. The subject related to the atomic energy of a university existed 19 in 1985 that was the previous year of the Chernobyl disaster decreased to 7 in 2003. In such a situation, we have to rely on the atomic energy because Japan depends for 96% of energy resources on import. The development of the fuel reprocessing and the fast breeder reactor has been continued in spite of a heavy failure. That is the only means left behind for Japan to be released from both fossil fuel and carbon dioxide.

Integrated library system in the library of Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Yonezawa, Minoru; Mineo, Yukinobu; Itabashi, Keizo

1987-01-01

Integrated library system has been developed using a stand-alone mini-computer in the Japan Atomic Energy Research Institute library. This system consists of three subsystems for serials control, books acquisition and circulation control. Serials control subsystem deals with subscription, acquisition, claiming and inquiry of journals. This has been operating since the beginning of 1985. Book acquisition sub-system, which has been started since April 1986, deals with accounting and cataloguing of books. Circulation control sub-system deals with circulation, statistics compilation, book inventory and retrieval, which has been operating since April 1987. This system contributes greatly not only to the reduction of the circulation work load but also to the promotion of the library services. However, the convenience in circulation processing should be improved for materials without catalogue information stored in the computer. The pertinence for maximum number of books retrieved has to be also reconsidered. (author)

Fiber optic transmission system delivered to Fusion Research Center of Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

Hayashida, Mutsuo; Hiramoto, Kiyoshi; Yamazaki, Kunihiro

1983-01-01

In general there are many electromagnetically induced noises in the premises of factories, power plants and substations. Under such electrically bad environments, for the computer data transmission that needs high speed processing and high reliability, the optical fiber cable is superion to the coaxial cable or the flat-type cable in aspects of the inductionlessness and a wide bandwidth. Showa Electric Wire and Cable Co., Ltd. has delivered and installed a computer data transmission system consisting of optical modems and optical fiber cables for connecting every experiment building in the premises of Fusion Research Center of Japan Atomic Energy Research Institute. This paper describes the outline of this system. (author)

Startup tests for TRIGA-ACPR at the Japan Atomic Energy Research Institute

International Nuclear Information System (INIS)

West, G.; Whittemore, W.

1976-01-01

The JAERI ACPR TRIGA startup tests involved procedures somewhat different from those considered standard for TRIGA. While the approach to critical followed standard procedures, the tests involving (1) the core loading to the permitted excess reactivity, and (2) the calibration of the 11 control rods (six Reg, two Safety, three Transient rods) were somewhat unusual. The power calibration involved three techniques: reactor noise analysis, flux foil activation, and calorimetry. The pulsing tests involved the insertion of increasing amounts of excess reactivity until the predicted performance was reached with a total insertion of $4.70. For,this the peak measured fuel temperature was 850 o C, and the integrated prompt energy release was about 100 megawatt-second, both in good agreement with predictions. (author)

Materials science symposium 'heavy ion science in tandem energy region'

Energy Technology Data Exchange (ETDEWEB)

Iwamoto, Akira; Yoshida, Tadashi; Takeuchi, Suehiro [eds.

2000-01-01

The tandem accelerator established at Japan Atomic Energy Research Institute (JAERI) in 1982 has been one of the most prominent electrostatic accelerators in the world. The accelerator has been serving for many researches planned by not only JAERI staff but also researchers of universities and national institutes. After the completion of the tandem booster in 1993, four times higher beam energy became available. These two facilities, the tandem accelerator and the booster, made great strides in heavy ion physics and a lot of achievements have been accumulated until now. The research departments of JAERI were reformed in 1998, and the accelerators section came under the Department of Materials Science. On this reform of the research system, the symposium 'Heavy Ion Science in Tandem Energy Region' was held in cooperation with nuclear and solid state physicists although there has been no such symposium for many years. The symposium was expected to stimulate novel development in both nuclear and solid state physics, and also interdisciplinary physics between nuclear and solid state physics. The 68 papers are indexed individually. (J.P.N.)

Various issues associated with laws concerning atomic energy in Japan

International Nuclear Information System (INIS)

Ishibashi, Tadao.

1989-01-01

It the report, the legislation and policymaking systems, particularly for high-level radioactive wastes, in Japan and the U.S. are compared. Major legislation that reflects the policies for atomic energy in the U.S. includes: National Environmental Policy Act (1960, Nixon Administration), Low-Level Radioactive Waste Policy Act (1980, Carter Administration), Reagan's statement in October 1981, Nuclear Waste Policy Act (1982, Reagan Administration), 1986 Revision of Low-Level Radioactive Waste Policy Act, and 1987 Revision of Nuclear Waste Policy Act. According to the basic concept specified in the revised Nuclear Waste Policy Act, the Department of Energy is required to establish the 'Mission Plan'. The 1988 Mission Plan describes details of the wastes, MRS and repository as covered by the above-mentioned basic concept. The 1982 Nuclear Waste Policy Act and its 1987 revision focus procedures for policymaking concerning the treatment and disposal of wastes. In particular, the Act specifies the time sequence of the processes down to the waste disposal together with material-related processes including the material selection at the disposal site, and also clarifies the rights and obligations of the persons and organizations having the legal responsibility. (N.K.)

Critical experiments facility and criticality safety programs at JAERI

International Nuclear Information System (INIS)

Kobayashi, Iwao; Tachimori, Shoichi; Takeshita, Isao; Suzaki, Takenori; Miyoshi, Yoshinori; Nomura, Yasushi

1985-10-01

The nuclear criticality safety is becoming a key point in Japan in the safety considerations for nuclear installations outside reactors such as spent fuel reprocessing facilities, plutonium fuel fabrication facilities, large scale hot alboratories, and so on. Especially a large scale spent fuel reprocessing facility is being designed and would be constructed in near future, therefore extensive experimental studies are needed for compilation of our own technical standards and also for verification of safety in a potential criticality accident to obtain public acceptance. Japan Atomic Energy Research Institute is proceeding a construction program of a new criticality safety experimental facility where criticality data can be obtained for such solution fuels as mainly handled in a reprocessing facility and also chemical process experiments can be performed to investigate abnormal phenomena, e.g. plutonium behavior in solvent extraction process by using pulsed colums. In FY 1985 detail design of the facility will be completed and licensing review by the government would start in FY 1986. Experiments would start in FY 1990. Research subjects and main specifications of the facility are described. (author)

HRB-22 capsule irradiation test for HTGR fuel. JAERI/USDOE collaborative irradiation test

Energy Technology Data Exchange (ETDEWEB)

Minato, Kazuo; Sawa, Kazuhiro; Fukuda, Kousaku [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; and others

1998-03-01

As a JAERI/USDOE collaborative irradiation test for high-temperature gas-cooled reactor fuel, JAERI fuel compacts were irradiated in the HRB-22 irradiation capsule in the High Flux Isotope Reactor at the Oak Ridge National Laboratory (ORNL). Postirradiation examinations also were performed at ORNL. This report describes 1) the preirradiation characterization of the irradiation samples of annular-shaped fuel compacts containing the Triso-coated fuel particles, 2) the irradiation conditions and fission gas releases during the irradiation to measure the performance of the coated particle fuel, 3) the postirradiation examinations of the disassembled capsule involving visual inspection, metrology, ceramography and gamma-ray spectrometry of the samples, and 4) the accident condition tests on the irradiated fuels at 1600 to 1800degC to obtain information about fuel performance and fission product release behavior under accident conditions. (author)

Overview of severe accident research at JAERI

International Nuclear Information System (INIS)

Sugimoto, Jun

1999-01-01

Severe accident research at JAERI aims at the confirmation of the safety margin, the quantification of the associated risk, and the evaluation of the effectiveness of the accident management measures of the nuclear power reactors, in accordance with the government five-year nuclear safety research program. JAERI has been conducting a wide range of severe accident research activities both in experiment and analysis, such as melt coolant interactions, fission product behaviors in coolant system, containment integrity and assessment of accident management measures. Molten core/coolant interaction and in-vessel molten coolability have been investigated in ALPHA Program. MUSE experiments in ALPHA Program has been conducted for the precise energy measurement due to steam explosion in melt jet and stratified geometries. In VEGA Program, which aims at FP release from irradiated fuels at high temperature and high pressure under various atmospheric conditions, the facility construction is almost completed. In WIND Program the revaporization of aerosols due to decay heating and also the integrity of the piping from this heat source are being investigated. Code development activities are in progress for an integrated source term analysis with THALES, fission product behaviors with ART, steam explosion with JASMINE, and in-vessel debris behaviors with CAMP. The experimental analyses and reactor application have made progress by participating international standard problem and code comparison exercises, along with the use of introduced codes, such as SCDAP/RELAP5 and MELCOR. The outcome of the severe accident research will be utilized for the evaluation of more reliable severe accident scenarios, detailed implementation of the accident management measures, and also for the future reactor development, basically through the sophisticated use of verified analytical tools. (author)

JSPS-CAS Core University Program seminar. Proceedings of Japan-China joint seminar on atomic and molecular processes in plasma

International Nuclear Information System (INIS)

Koike, Fumihiro; Dong Chenzhong

2010-02-01

As one of the activities of JSPS-CAS Core University Program, Japan-China Joint Seminar on Atomic and Molecular Processes in Plasma was held on October 26 - 31, 2009 in Xi'an, China. The total number of the officially registered participants was 54, in which 18 from Japan, 35 from China, and 1 from USA. And this seminar is an extension of the last two seminars that were held on March 6 - 11, 2004 in Lanzhou, China, and on October 6 - 12, 2007 in Dunhuang, China. In the nuclear fusion plasma, there are quite a variety of atomic processes such as ionization, excitation, radiative recombination, non-radiative recombination (di-electronic recombination, collisional electron transfer), cascade radiation, and cascade Auger decay over the wide range of plasma temperature. The knowledge of those processes is indispensable for the evaluation and improvement of the plasma properties. Because of the diversity of the subject, it is desirable to investigate them by international collaboration groups. The present seminar may contribute to realize the above stated aim; especially it has given an opportunity for the collaborative workers to illustrate their achievements. This seminar summarizes the collaborative researches for the last decade and propose the issues for the future prospect. The 30 of the presented papers are indexed individually. (J.P.N.)

JAERI electrostatic accelerators for multiple ion beam application

International Nuclear Information System (INIS)

Ishii, Yasuyuki; Tajima, Satoshi; Takada, Isao

1993-01-01

An electrostatic accelerators facility of a 3MV tandem accelerator, a 3MV single-ended accelerator and a 400kV ion implanter was completed mainly for materials science and biotechnology research at JAERI, Takasaki. The accelerators can be operated simultaneously for multiple beam application in triple and dual beam modes. The single-ended machine was designed to satisfy an extremely high voltage stability of ±1x10 -5 to provide a submicron microbeam stably. The measured voltage stability and ripple were within the designed value. (author)

Summary of the 4th workshop on the reduced-moderation water reactor

Energy Technology Data Exchange (ETDEWEB)

Nakatsuka, Toru; Ishikawa, Nobuyuki; Iwamura, Takamichi (eds.) [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2001-09-01

The research on Reduced-Moderation Water Reactors (RMWRs) has been performed in JAERI for the development of future innovative reactors. The workshop on the RMWRs has been held every year since fiscal 1997 aimed at information exchange between JAERI and other organizations such as universities, laboratories, utilities and vendors. The 4th workshop was held on March 2, 2001 under the joint auspices of JAERI and North Kanto branch of Atomic Energy Society of Japan. The workshop began with three lectures on recent research activities in JAERI entitled 'Recent Situation of Research on Reduced-Moderation Water Reactor', 'Analysis on Electricity Generation Costs of Reduced Moderation Water Reactors' and 'Reprocessing Technology for Spent Mixed-Oxides Fuel from LWR'. Then five lectures followed: 'Micro Reactor Physics of MOX Fueled LWR' which shows the recent results of reactor physics, Fast Reactor Cooled by Supercritical Light Water' which is another type of reduced-moderation reactor, 'Phase 1 of Feasibility Studies on Commercialized Fast Breeder Reactor Cycle System' mainly conducted by Japan Nuclear Cycle Development Institute (JNC), 'Integral Type Small PWR with Stand-alone Safety' which is intended to suit for the future consumers' needs, and Utilization of Plutonium in Reduced-Moderation Water Reactors' which dictates benefits of plutonium utilization with RMWRs. This report includes the original papers presented at the workshop and summaries of the questions and answers for each lecture, as well as presentation handouts, program and participant list as appendixes. The 8 of the presented papers are indexed individually. (J.P.N.)

Japan - IAEA joint Nuclear Energy Management School 2016

International Nuclear Information System (INIS)

Yamaguchi, Mika; Hidaka, Akihide; Ikuta, Yuko; Yamashita, Kiyonobu; Sawai, Tomotsugu; Murakami, Kenta; Uesaka, Mitsuru; Tomita, Akira; Toba, Akio; Hirose, Hiroya; Watanabe, Masanori; Kitabata, Takuya; Ueda, Kinichi; Kita, Tomohiko; Namaizawa, Ken; Onose, Takatoshi

2017-03-01

Since 2010, International Atomic Energy Agency (IAEA) has held the 'Nuclear Energy Management School' so-called 'IAEA-NEM' to develop future leaders who plan and manage nuclear energy utilization in their county. Since 2012, Japan Atomic Energy Agency (JAEA) together with the Japan Nuclear Human Resource Development Network (JN-HRD Net), the University of Tokyo (UT), the Japan Atomic Industrial Forum (JAIF) and JAIF International Cooperation Center (JICC) have cohosted the NEM school in Japan in cooperation with IAEA. Since then, the school has been held every year, with the school in 2016 marking the fifth. In the 2016 NEM school, Japanese nuclear energy technology and experience, such as lessons learned from the Fukushima Daiichi Nuclear Power Station accident, were provided by not only lectures by IAEA experts, but also lectures by Japanese experts and leaders in order to offer a unique opportunity for the participants from other countries to learn about particular cases in Japan. Opportunities to visit a variety of nuclear facilities were offered for the participants in the form of technical tours in Fukui and Kobe. Through the school, we contributed to the internationalization of Japanese young nuclear professionals, development of nuclear human resource of other countries including nuclear newcomers, and enhanced cooperative relationship between IAEA and Japan. Additionally, collaborative relationship with JN-HRD Net was strengthened solidly through the integrated cooperation among ministries, universities, manufacturers and research organizations across the county by holding the school in Japan. In this report, findings obtained during the preparatory work and the school period were reported in order to make a valuable contribution towards effectively and efficiently conducting future international nuclear human resource development activities in Japan. (author)

Development of radioisotope production in JAERI

International Nuclear Information System (INIS)

Yamabayashi, H.; Kato, H.; Umezawa, H.

1992-01-01

Since 1962, we have been developing methods and technology for producing a wide variety of processed radioisotopes and sealed radiation sources by using the JAERI's reactors, JRR-2, JRR-3, JRR-4 and JMTR, and providing the products to domestic users. At present, 29 nuclides and 31 products are on our list of processed radioisotopes. Some of those isotopes such as P-32, S-35, Cr-51 and short-lived nuclides are being produced regularly for distribution, but most of the rest are produced upon request. The radiation sources of Co-60 needles and Ir-192 pellets for industrial use and Gd-153 pellet, 7 kinds of Ir-192 and Au-198 grain for medical applications are produced and distributed routinely. (author)

Progress report on JAERI-ORNL cooperative neutron scattering research

International Nuclear Information System (INIS)

Iizumi, Masashi

1985-08-01

One year activities done under the JAERI-DOE(ORNL) cooperative neutron scattering program are summarized. This period just followed the completion of the wide-angle neutron diffractometer dedicated to the cooperative research. The report contains results of the performance test of the instrument and early research activities. The latter part includes the time-resolved measurements of the transition kinetics in tin and Ni-Mn alloy as well as the single-crystal diffraction by the flat-cone method. (author)

Report of the evaluation by the Ad Hoc Review Committee on Materials Science Research. Ex-post evaluation in fiscal year 2003

International Nuclear Information System (INIS)

2004-06-01

The Research Evaluation Committee, which consisted of 13 members from outside of the Japan Atomic Energy Research Institute (JAERI), set up an Ad Hoc Review Committee on Materials Science Research in accordance with the Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations in order to evaluate the adequacy of the R and D results achieved for five years until Fiscal Year 2002 at Department of Materials Science in Tokai Research Establishment of JAERI. The Ad Hoc Review Committee consisted of eight specialists from outside of JAERI. The Ad Hoc Review Committee conducted its activities from October 2003 to February 2004. The evaluation was performed on the basis of the materials submitted in advance and of the oral presentations made at the Ad Hoc Review Committee meeting which was held on November 14, 2003, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Ad Hoc Review Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on March 8, 2004. This report describes the result of the evaluation by the Ad Hoc Review Committee on Materials Science Research. (author)

Report of the evaluation by the Ad Hoc Review Committee on Computational Science and Engineering. Result evaluation in fiscal year 2000

International Nuclear Information System (INIS)

2001-06-01

The Research Evaluation Committee, which consisted of 14 members from outside of the Japan Atomic Energy Research Institute (JAERI), set up an Ad Hoc Review Committee on Computational Science and Engineering in accordance with the 'Fundamental Guideline for the Evaluation of Research and Development (R and D) at JAERI' and its subsidiary regulations in order to evaluate the R and D accomplishments achieved for five years from Fiscal Year 1995 to Fiscal Year 1999 at Center for Promotion of Computational Science and Engineering of JAERI. The Ad Hoc Review Committee consisted of seven specialists from outside of JAERI. The Ad Hoc Review Committee conducted its activities from December 2000 to March 2001. The evaluation was performed on the basis of the materials submitted in advance and of the oral presentations made at the Ad Hoc Review Committee meeting which was held on December 27, 2000, in line with the items, viewpoints, and criteria for the evaluation specified by the Research Evaluation Committee. The result of the evaluation by the Ad Hoc Review Committee was submitted to the Research Evaluation Committee, and was judged to be appropriate at its meeting held on March 16, 2001. This report describes the result of the evaluation by the Ad Hoc Review Committee on Computational Science and Engineering. (author)

Present status of tandem accelerator in Japan Atomic Energy Research Institute

Energy Technology Data Exchange (ETDEWEB)

Yoshida, Tadashi; Kanda, Susumu; Takeuchi, Suehiro [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1996-12-01

The tandem accelerator in Japan Atomic Energy Research Institute was made by NEC in USA. Since it is the accelerator of turning-up structure, it has large magnet at the high voltage terminal, and supplies electric power by driving a generator with large diameter shaft. The control is carried out by CAMUCK, and the electronic circuit is protected from the surging arising due to discharge. Since the experiment on full scale was begun, 14 years have elapsed, and at present, it became a very stable accelerator. As to the operation mode, the acceleration voltage is limited to below 17 MV. The operation voltage and the state of operation are shown. Recently, the troubles of chains originating in oil have occurred. The adjustment of the tandem accelerator requires more than one month. The adjustment is mainly related to the chains and shafts, and this is explained. The ion source used for the tandem accelerator at present is the negative ion source made by NEC. The installation of an ECR ion source is planned. The utilization of the tandem accelerator system is reported. (K.I.)

Proceedings of the fifteenth meeting of the international collaboration on advanced neutron sources (ICANS-XV). Advanced neutron sources towards the next century

Energy Technology Data Exchange (ETDEWEB)

Suzuki, Jun-ichi [Center for Neutron Science, Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan); Itoh, Shinichi [Neutron Science Laboratory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki (JP)

2001-03-01

The fifteenth meeting of the International Collaboration on Advanced Neutron Sources (ICANS-XV) was held at Epocal Tsukuba, International Congress Center on 6-9 November 2000. It was hosted by Japan Atomic Energy Research Institute (JAERI) and High Energy Accelerator Research Organization (KEK). This meeting focused on 'Neutron Sources toward the 21st Century' and research activities related to targets and moderators, neutron scattering instruments and accelerators were presented. The 151 of the presented papers are indexed individually. (J.P.N.)

Proceedings of the fifteenth meeting of the international collaboration on advanced neutron sources (ICANS-XV). Advanced neutron sources towards the next century

Energy Technology Data Exchange (ETDEWEB)

Suzuki, Jun-ichi [Center for Neutron Science, Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan); Itoh, Shinichi [Neutron Science Laboratory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki (JP)] (eds.)

2001-03-01

The fifteenth meeting of the International Collaboration on Advanced Neutron Sources (ICANS-XV) was held at Epocal Tsukuba, International Congress Center on 6-9 November 2000. It was hosted by Japan Atomic Energy Research Institute (JAERI) and High Energy Accelerator Research Organization (KEK). This meeting focused on 'Neutron Sources toward the 21st Century' and research activities related to targets and moderators, neutron scattering instruments and accelerators were presented. The 151 of the presented papers are indexed individually. (J.P.N.)

Help system for control of JAERI FEL (Free Electron laser)

International Nuclear Information System (INIS)

Sugimoto, Masayoshi

1993-01-01

The control system of JAERI FEL (Free Electron Laser) has a help system to provide the information necessary to operate the machine and to develop the new user interface. As the control software is constructed on the MS-Windows 3.x, the hyper-text feature of the Windows help system can be accessed. It consists of three major parts: (1) on-line help, (2) full document, and (3) tutorial system. (author)

Database and Related Activities in Japan

International Nuclear Information System (INIS)

Murakami, Izumi; Kato, Daiji; Kato, Masatoshi; Sakaue, Hiroyuki A.; Kato, Takako; Ding, Xiaobin; Morita, Shigeru; Kitajima, Masashi; Koike, Fumihiro; Nakamura, Nobuyuki; Sakamoto, Naoki; Sasaki, Akira; Skobelev, Igor; Tsuchida, Hidetsugu; Ulantsev, Artemiy; Watanabe, Tetsuya; Yamamoto, Norimasa

2011-01-01

We have constructed and made available atomic and molecular (AM) numerical databases on collision processes such as electron-impact excitation and ionization, recombination and charge transfer of atoms and molecules relevant for plasma physics, fusion research, astrophysics, applied-science plasma, and other related areas. The retrievable data is freely accessible via the internet. We also work on atomic data evaluation and constructing collisional-radiative models for spectroscopic plasma diagnostics. Recently we have worked on Fe ions and W ions theoretically and experimentally. The atomic data and collisional-radiative models for these ions are examined and applied to laboratory plasmas. A visible M1 transition of W 26+ ion is identified at 389.41 nm by EBIT experiments and theoretical calculations. We have small non-retrievable databases in addition to our main database. Recently we evaluated photo-absorption cross sections for 9 atoms and 23 molecules and we present them as a new database. We established a new association ''Forum of Atomic and Molecular Data and Their Applications'' to exchange information among AM data producers, data providers and data users in Japan and we hope this will help to encourage AM data activities in Japan.

Knowledge based operation assist system for JAERI AVF cyclotron

International Nuclear Information System (INIS)

Agematsu, T.; Okumura, S.; Yokota, W.; Arakawa, K.; Murakami, T.; Okamura, T.

1992-01-01

We have developed two operation assist systems for easy and rapid operation of the JAERI AVF cyclotron. One is a knowledge based expert system guiding the sequence of parameter adjustment to inexperienced cyclotron operators. The other is a real-time simulation of the beam trajectories which are calculated from actual operating parameters. It graphically indicates feasible setting range of parameters that satisfies the acceptance of the cyclotron. These systems provide a human interface to adjust the parameters of the cyclotron. (author)

JAERI Fuel Cleanup System (J-FCU) stand-alone tritium test at the TSTA

International Nuclear Information System (INIS)

Konishi, Satoshi; Hayashi, Takumi; Inoue, Masahiko

1993-03-01

JAERI designed, fabricated, and installed the JAERI Fuel Cleanup System (J-FCU) as a subsystem of simulated fusion fuel loop at the TSTA. The main function of the J-FCU is to purify and to recover hydrogen isotopes from simulated plasma exhaust while exhausting tritium free impurities. After a lot of deuterium tests, a first tritium test of the J-FCU was performed with one gram of tritium at the TSTA on June 1991. Main purpose of this test was to evaluate the total integrity and function of the J-FCU system with a DT mixture. Through this test, the J-FCU was operated well and its function with tritium was demonstrated. This report describes the detail test results of the J-FCU first tritium test and discuss its functions by stand-alone mode. Residual tritium inventory of the J-FCU system was also discussed. (author)

Planned Positron Factory project

International Nuclear Information System (INIS)

Okada, Sohei

1990-01-01

The Japan Atomic Energy Research Institute, JAERI, has started, drafting a construction plan for the 'Positron Factory', in which intense energy-controllable monoenergetic positron beams are produced from pair-production reactions caused by high-energy electrons from a linac. The JAERI organized a planning committee to provide a basic picture for the Positron Factory. This article presents an overview of the interactions of positrons, intense positron sources and the research program and facilities planned for the project. The interactions of positrons and intense positron sources are discussed focusing on major characteristics of positrons in different energy ranges. The research program for the Positron Factory is then outlined, focusing on advanced positron annihilation techniques, positron spectroscopy (diffraction, scattering, channeling, microscopy), basic positron physics (exotic particle science), and positron beam technology. Discussion is also made of facilities required for the Positron Factory. (N.K.)

Radiation exposure of the employes in fiscal 1980 at reactor facilities for testing and research and under development

International Nuclear Information System (INIS)

1982-01-01

The owners of reactors are obligated by the law for the regulation of reactors, etc. to keep the radiation exposure dose of their employes below the permissible level. In fiscal 1980 (from April to March), the exposure dose of employes was largely below the permissible level. Based on the reports made by the owners in accordance with the law, the following data are presented in tables for the whole year and the respective quarters: in the research institutions including Japan Atomic Energy Research Institute (JAERI), Power Reactor and Nuclear Fuel Development Corporation (PNC) and educational institutions, the exposure dose distribution of employes; in the Tokai Research Establishment and Oarai Research Establishment, JAERI, and the Oarai Engineering Center and ATR ''Fugen'' Power Station, PNC, the exposure dose distribution, total exposure dose and average exposure dose of employes and outside workers. (J.P.N.)

Proceedings of the 1992 symposium on nuclear data

Energy Technology Data Exchange (ETDEWEB)

Baba, Mamoru [ed.; Tohoku Univ., Sendai (Japan); Nakagawa, Tsuneo [ed.; Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1993-03-15

The 1992 Symposium on Nuclear Data was held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), on 26th and 27th of November, 1992. The symposium was organized by Japanese Nuclear Data Committee and Nuclear Data Center, JAERI. The program of the symposium is listed below. In the oral session, a total of 15 papers were presented under the sessions of present status of revision work of JENDL-3, adjustment of group constants, nuclear data in medium energy region, nuclear data evaluation methods, integral data analyses and topics. In the poster session, presented were 25 papers concerning experiments, evaluations and benchmark tests of nuclear data. Activities of JNDC working groups were also displayed in the poster session. All of the 40 papers except the reports from JNDC working groups are compiled in this proceedings.

Current status of JAERI Tokai hot cell facilities

International Nuclear Information System (INIS)

Itami, Hiroharu; Morozumi, Minoru; Yamahara, Takeshi

1992-01-01

JAERI has 4 hot cell facilities in order to examine high radioactive materials. Three of them, the Research Hot Laboratory, the Reactor Fuel Examination Facility and the Waste Safety Testing Facility are located in the JAERI Tokai site, and the rest is the JMTR Hot Laboratory in the Oarai site. The Research Hot Laboratory (RHL) was constructed for post-irradiation examination (PIE), especially nuclear related basic research experiment, such as metallurgical, chemical and mechanical examination on fuels and materials irradiated in research and test reactors. This facility has 10 large dimension concrete and 38 lead cells. At present the RHL is used for various kinds of examinations of high radioactive samples such as fuels of research and test reactors, power reactors and high temperature testing reactor (HTTR), and structural materials. The Reactor Fuel Examination Facility (RFEF) was designed and constructed for carrying out PIE of irradiated full-size fuel assemblies of light water reactors (LWRs). This facility has a storage pool, 8 concrete and 5 lead cells. They are currently used for safety evaluation on high burnup and advanced lWR fuels as part of the national program. The Waste Safety Testing Facility (WASTEF) was designed and constructed for safety research on long-term storage and disposal of high level radioactive wastes, generated by fuel reprocessing. The WASTEF has 5 concrete cells and 1 lead cell. Examinations on the behavior of various long-lived fission products in a glass form and in a canister and, releasing behavior of them out of a canister are carrying out under the condition at storage. (author)

Various problems in establishment of fuel cycle business in Japan

International Nuclear Information System (INIS)

Murata, Hiroshi

1985-01-01

Since Japan instituted the Atomic Energy Act in 1956, and organized the Atomic Energy Commission, as the fundamental policy of the peaceful use of atomic energy, the industrialization and establishment of fuel cycle technology have been advanced as well as the development of power reactors. The consistent and harmonious industrialization of uranium enrichment, fuel fabrication, reprocessing, the utilization of recovered plutonium and uranium, and the storage, treatment and disposal of wastes has been the target. As the nuclear power generation in Japan grew, the enhancement of the various factors of nuclear fuel cycle as the base of supporting nuclear power generation has become necessary. The effort of technical development has been continued in the fields of uranium enrichment, fuel reprocessing, plutonium fuel and waste treatment by the Power Reactor and Nuclear Fuel Development Corp., Japan Atomic Energy Research Institute and related industries. The plan and present status of nuclear fuel cycle business in Japan, the problems such as the roles of the government and private enterprises, technology transfer, the economy of nuclear fuel cycle business, the industrialization of mixed oxide fuel fabrication, nuclear nonproliferation policy and location are discussed. (Kako, I.)

The 2003 activities and the workshop of the human resources development project in FNCA

International Nuclear Information System (INIS)

2004-07-01

In 1999, the Project for Human Resources Development (HRD Project) was initiated as defined in the framework of the Forum for Nuclear Cooperation in Asia (FNCA), organized by the Atomic Energy Commission of Japan. The objective of the HRD Project is to solidify the foundation of technologies for nuclear development and utilization in Asia by promoting human resources development in Asian countries. In the Project there are two kinds of activity; In-workshop activity and Outside-of-workshop activity. The FNCA 2003 Workshop on HRD Project was held on October 8-10, 2003, in Bangkok, Thailand. The Workshop was sponsored by the Ministry of Science and Technology (MOST) of Thailand and the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. Office of Atoms for Peace (OAP) and the Japan Atomic Energy Research Institute (JAERI) acted as the hosts. Participating countries were China, Republic of Korea, Japan, Malaysia, the Philippines, Thailand, and Vietnam. Unfortunately Indonesia could not attend the Workshop this time. This report consists of presentation papers and materials at the FNCA 2003 Workshop as In-Workshop Activity, a review document of HRD Project for the 6th Coordinators Meeting of FNCA at Tokyo on March, 2004, a letter of proposal from the Project Leader of Japan to the Project Leaders of the participating countries, and training materials of participating countries as Outside-Workshop Activity. (author)

Current status of HTTR project at JAERI

International Nuclear Information System (INIS)

Saito, Shinzo; Sudo, Yukio; Tanaka, Toshiyuki; Baba, Osamu

1992-01-01

The HTTR is a high temperature gas cooled test reactor with thermal output of 30 MW, outlet coolant temperatures of 850degC at rated operation and 950degC at high temperature test operation and primary coolant pressure of 4 MPa. The HTTR consists of a reactor pressure vessel with a prismatic core in it, a primary cooling loop with an intermediate helium-helium heat exchanger and a pressurized water cooler in parallel, an auxiliary cooling system, a reactor vessel cooling system and related components. The HTTR is utilized for establishing and upgrading the technology bases for advanced HTGRs including irradiation tests for fuels and materials, safety demonstration tests for HTGRs and nuclear heat application and for carrying out various kinds of innovative basic researches on high temperature technologies. Since 1969, the JAERI has carried out research and development works on block type fuel, high temperature materials, high temperature in-core instrumentations, high temperature components, reactor physics, heat transfer and fluid dynamics, plate-out of fission products etc., in order to construct the HTTR which can supply high temperature coolant of 950degC to the outside of the pressure vessel for the nuclear heat application, for the first time in the world. In November 1990, the installation permit was issued by the Government through about 20 month safety review by the Science and Technology Agency and Nuclear Safety Commission. The construction of the HTTR facility was initiated on the site in the Oarai Research Establishment, JAERI in March 1991. The excavation of ground is now finished at the HTTR site. It will take about six years for the completion of the HTTR facility and the first criticality will be attained in 1996. (author)

Studies in precise neutron optics at JAERI

International Nuclear Information System (INIS)

Tomimitsu, Hiroshi

1994-01-01

Studies in the field of so-called 'Precise Neutron Optics' at JAERI were reported, since the beginning of 1970. It started with the photographic detection of the 'Pendellusung Fringes' in a wedge-shaped Si crystal, promoted by Prof.K.Kohra. Neutron diffraction topography was also tried and used for the 'direct' observation of the substructure in a Cu-5%Ge single crystal, carried out by the present author. So-called 'VSANS' (Very Small Angle Neutron Scattering) was also tried, with the angular resolution better than 0.1 sec. of arc, for the structural observation of several kinds of 'amorphous' materials, such as neutron-irradiated silica glasses, Pb-containing glasses and several ribbon-shaped amorphous alloys, carried out by Dr.K.Doi. Recently with the co-operation with Prof.S.Kikuta's group, some interferometric experiments were tried, such as the detection of the double-refraction phenomenon of the neutron in the magnetic materials, carried out by Dr.S.Nakatani. The apparatus for precise neutron optics and topography (PNO) was constructed at the JRR-3M in JAERI in 1992, which was just properly made for the studies in the present thema. With the PNO, the characterization of Ni-Ti multilayer mirror for the interferometer with the cold/ ultra-cold neutrons was carried out, the results being reported in the other article of this symposium by Dr.H.Funahashi. Through the test use of the PNO with the neutron interferometry, carried out by Dr.Y.Hasegawa, it was revealed that the PNO is the best facility in the world for the neutron interferometry; with the datas of the count ratio upto 20 cps and the contrast more than 40%. Dr.K.Aizawa is now refining the VSANS-technique on the PNO, for the precise observation of the precipitation behaviour of high density small particles such as metatic alloy-system. (author)

Annual report on neutron scattering studies in JAERI, September 1, 1978 - August 31, 1979

International Nuclear Information System (INIS)

Iizumi, Masashi; Endoh, Yasuo

1980-03-01

Neutron scattering studies carried out from September 1978 to August 1979 by Division of Physics, JAERI, and universities with JRR-2 and -3 neutron beam facilities are described: 51 summary reports, and a list of publications. (author)

The JAERI and Universities joint project research reports on the 4th joint research project between JAERI and Universities on backend chemistry

Energy Technology Data Exchange (ETDEWEB)

NONE

2003-02-01

In the Joint Research Project between JAERI and Universities on Backend Chemistry, the 4th-term researches of it were performed on sixteen themes from April of 1999 to March of 2001 under the four categories, i.e. Nuclear-chemistry and physical-chemistry properties of actinides', 'Solid state chemistry and nuclear fuel engineering of actinides', 'Solution chemistry and technologies for separation and analysis of actinides' and Treatment of radioactive waste and environmental chemistry'. The present report compiled the papers contributed to the Joint Research Project. (author)

Dosimetry systems for radiation processing in Japan

International Nuclear Information System (INIS)

Tamura, Naoyuki

1995-01-01

The present situation of dosimetry systems for radiation processing industry in Japan is reviewed. For gamma-rays irradiation the parallel-plate ionization chamber in TRCRE, JAERI has been placed as a reference standard dosimeter for processing-level dose. Various solid and liquid chemical dosimeters are used as routine dosimeters for gamma processing industries. Alanine dosimeters is used for the irradiation purpose which needs precise dosimetry. For electron-beam irradiation the electron current density meter and the total absorption calorimeter of TRCRE are used for the calibration of routine dosimeters. Plastic film dosimeters, such as cellulose triacetate and radiochromic dye are used as routine dosimeters for electron processing industries. When the official traceability systems for processing-level dosimetry now under investigation is completed, the ionization chamber of TRCRE is expected to have a role of the primary standard dosimeter and the specified alanine dosimeter will be nominated for the secondary or reference standard dosimeter. (author)

The Universities and JAERI joint research project. The achievements and prospects

International Nuclear Information System (INIS)

Ohashi, Hiroshi; Nakamura, Takashi; Yamaguchi, Sadaei

1999-01-01

The universities and JAERI joint research project has been carried out since 13 years ago on an equivalent basis with the universities and JAERI and co-ownership of the results. This paper consists of the history and results of research project and evaluation. The significance, characteristics, themes and problems of the project are arranged. The main results and the future of the project are explained. Two large projects such as the backend chemical project and the high-degree application of radiation project have been studied. The backend chemical project consisted of four themes; the nuclear chemical researches for TRU recycle, the solid chemical research of nuclear fuel and waste, new separation method for reprocessing and waste disposal and the fundamental chemical researches for disposal waste. The high-degree application of radiation project have eight themes; effects of ion beam on organism, slow positron generation and its application to materials, ion irradiation effects on polymer materials, nuclear spectroscopy and nuclear physics of isotope using online isotope separator, shield and behavior of accelerator radiation, materials analysis by ion beam, effects of nuclear transformation product by nuclear fusion reactor radiation damage and biofunction analysis of plant using positron release nuclide. (S.Y.)

Project of the JAERI superconducting AVF cyclotron for applications in biotechnology and materials science

International Nuclear Information System (INIS)

Miyawaki, Nobumasa; Kurashima, Satoshi; Okumura, Susumu; Chiba, Atsuya; Agematsu, Takashi; Kamiya, Tomihiro; Kaneko, Hirohisa; Nara, Takayuki; Saito, Yuichi; Ishii, Yasuyuki; Sakai, Takuro; Mizuhashi, Kiyoshi; Fukuda, Mitsuhiro; Yokota, Watalu; Arakawa, Kazuo

2005-01-01

A project for expanding TIARA (Takasaki Ion accelerators for Advanced Radiation Application) facilities of JAERI has been proposed to broaden application region of biotechnology and materials science. As a result of the investigation of TIARA facility user's request, energy increase up to more than 100 MeV/n for heavy ions and up to 300 MeV for proton are strongly required. The magnet of a superconducting AVF cyclotron with a K number of 900 has been designed to cope with acceleration of both 150 MeV/n heavy ions and 300 MeV protons. The lower limit of energies has been investigated to overlap the energy region covered by the JAERI AVF cyclotron, required to increase beam time for present users. We have designed a beam transport system to satisfy various requirements of the applications. (author)

Proceedings of the fifth seminar on software development in nuclear energy research

International Nuclear Information System (INIS)

Hasegawa, Akira; Maekawa, Hiroshi; Fujiki, Kazuo; Harada, Hiroo

1989-02-01

These proceedings are the compilations of papers presented to the Fifth Seminar on Software Development in Nuclear Energy Research held at Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), October 17 - 18, 1988. The seminar was organized in cooperation with Japanese Committee on Reactor Physics (JCRP) and Japanese Nuclear Code Committee (JNCC). The topics of seminar include the invited papers on the subjects: - Net work for Atomic Energy Research - (1) Present and future of Networks, (2) Applications of Networks, (3) Panel Discussion : Usage of Networks in Atomic Energy Research, - Frontier of Simulation Softwares for the Environment Safety - (4) Numerical Simulation of Grobal Scale Dispersion on the Chernobyl Accident, and (5) Oceanic Diffusion and Safety Evaluation of High Level Waste Disposal in Geological Media. (author)

Operation, test, research and development of the high temperature engineering test reactor (HTTR). FY2003

International Nuclear Information System (INIS)