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Nomura, Shigeo; Yamato, Aiji; Ojima, Hisao
CD-ROM, 5P., 5 Pages, 2003/00
In Japan, the Feasibility study for commercialization of FBR and its fuel cycle system (FS) has been conducted under the collaboration of JNC and the electric utilities since 1999. Through the FS, candidate technology will be selected by 2015.
Sasaki, Noriaki; Yamato, Aiji;
Proceedings of 5th International Conference on Radioactive Waste Management and Environmental Remediation (ICEM '95), Vol.2, 649 Pages, 1995/00
None
Yamato, Aiji; Sasaki, Noriaki; ; Miyahara, Kaname;
PNC TN1100 94-003, 355 Pages, 1993/11
Radioactive waste management research programs inevitably include laboratory solubili and sorption studies to provide data for radionuclide transport model. Estimation of lubility strongly depends on the reliability of thermodynamic data (e.g., carbonato-colexes) and may also depend on kinetic data on alteration of solubility limiting solid ases. Existing sorption data may include some kind of retardation mechanisms to be excded (e.g., precipitation). To develop these fundamental data, we must also consider a rge number of radioactive elements, a large number of factors (e.g., pH, Eh, complexinligands) in the repository environmentg, and numerous solid and aqueous species of radnuclides along with the many absorbents. Therefore, a systematic approach and researchlan are needed for obtaining and evaluation thermodynamic and sorption constants. The cus of this session was on thermodynamic data for aqueous species and solid phases imptant to the geological disposal system, on kinetic data
Yamato, Aiji; Sasaki, Noriaki; ; Miyahara, Kaname
PNC TN1100 94-002, 85 Pages, 1993/11
Nuclear energy is the second largest source of electric power in the United States. Tdate, nuclear power plants produced over twenty percent of the nation's electricity. Aof August 1991, there were 112 nuclear power reactors in the United States, and two mo were being built. By the year 2000, approximately 40,000 metric tons of nuclear wasteill be in temporary storage at reactor sites throughout the coutry. That amount is twi the amount that currently exists. In order to handle such waste, as well as the addedolume to be produced after the year 2000, the U. S. Department of Energt (DOE) is in t process of developing the waste management system that was authorized by the U. S Coness in 1987. The authorized system is illustrated in Figure 1. To summarize, spent nucar fuel from commercial power reactors will be accepted by the DOE at the reactor siteand transported to a monitored retrievable storage (MRS) facility for temporary storagand preparation for permanent disposal in a gelogic rep
Kitahara, Yoshihisa; Yamato, Aiji; Iwai, Makoto;
PNC TN8420 86-10, 166 Pages, 1986/12
An accident took place at the Chernobyl nuclear power plant in USSR in the early hours of 26 April 1986. The plant caught fire and some degree of reactor inventry was released to the environment. Following the accident, debris of the radioactivity from Chernobyl was detected in all the European countries and countermeasures were taken in some countries. In Japan, many kinds of radionuclides were detected in rain, airbone dust and other environmental samples from 3 May and "Headquaters for Radioactivity Countermeasure" was organized in the Japanese Government. Health and Safety Division at the Tokai Works, PNC, performed the environmental monitoring for the Chernobyl accident in addition to the statutory monitoring program. This report presents results of the environmental monitoring performed at Tokai Works. Furthermore, study on the environmental transfer parameters and preliminary estimation of the committed dose equivalent to the public around Tokai area are discussed.
*; ; *; Koizumi, Katsuzo; Ebana, Minoru*; *; *; *
PNC TN802 85-03, 141 Pages, 1985/02
no abstracts in English
*; Kishimoto, Yoichiro; *; *; *; *; *; Maruo, Yoshihiro
PNC TN841 84-27, 27 Pages, 1984/03
no abstracts in English
*; *; *; Noda, Kimio; Ebana, Minoru*; Maruo, Yoshihiro; Kobayashi, Hirohide*; *
PNC TN843 83-13, 56 Pages, 1983/11
None
Iwai, Makoto; *; *; Takeishi, Minoru*; *;
PNC TN852 83-15, 438 Pages, 1983/06
This manual includes standard procedures for environmental sampling, sample preparation and radionuclide analysis and is applied to the environmental monitoring around the Tokai Works of PNC. The second edition was published in 1979 (PNCT 852-79-09). Almost all analytical procedures have been modified for these four years, so the third edition revised entirely was to be published this time.
Miura, Makoto; *; Akutsu, Ken*; *; ; *; Shinohara, Kunihiko*; *
PNC TN844 83-03, 144 Pages, 1983/02
This report presents current information from the environmental protection section, Tokai works, PNC on the radiation monitoring around the reprocessing plant during 1982. The report consists of general interpretive report on the results, individual interpretive reports and maximum radiation dose which may be received by hypothetical inhabitants, caused by discharge of radioactivity into both marine and terrestrial environments. Subsequent supplements include tabulations of results including meteorological observations and radioactivity measurements on discharge effluent from the plant. The environmental radiation monitoring around the Tokai reprocessing plant has been performed since 1975 based on the safety standard of the plant.
*; Asano, Tomohiro; *; Shinohara, Kunihiko*; *; Miura, Makoto
PNC TN841 83-08, 69 Pages, 1983/02
no abstracts in English
PuShinohara, Kunihiko; Yamato, Aiji
Hoken Butsuri, 18(1), p.49 - 55, 1983/00
Yamato, Aiji
Radioisotopes, 31, p.587 - 590, 1982/11
Shinohara, Kunihiko*; *; *; Miura, Makoto
PNC TN841 82-30, 37 Pages, 1982/05
no abstracts in English
