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JAEA Reports

Thermal hydraulic analysis of the JMTR improved LEU-core

Tabata, Toshio; Nagao, Yoshiharu; Komukai, Bunsaku; Naka, Michihiro; Takeda, Takashi*; Fujiki, Kazuo

JAERI-Tech 2002-100, 108 Pages, 2003/01

JAERI-Tech-2002-100.pdf:4.44MB

After the investigation of the new core arrangement for the JMTR reactor in order to enhance the fuel burn-up and consequently extend the operation period, the "improved LEU core" that utilized 2 additional fuel elements instead of formerly installed reflector elements, was adopted. This report describes the results of the thermal-hydraulic analysis of the improved LEU core as a part of safety analysis for the licensing. The analysis covers steady state, abnormal operational transients and accidents, which were described in the annexes of the licensing documents as design bases events. Calculation conditions for the computer codes were conservatively determined based on the neutronic analysis results and others. The results of the analysis, that revealed the safety criteria were satisfied on the fuel temperature, DNBR and primary coolant temperature, were used in the licensing. The operation license of the JMTR with the improved LEU core was granted in March 2001, and the reactor operation with new core started in November 2001 as 142nd operation cycle.

Journal Articles

Neutron irradiation effect on the mechanical properties of type 316L SS welded joint

Saito, Shigeru; Fukaya, Kiyoshi*; Ishiyama, Shintaro; Amezawa, Hiroo; Yonekawa, Minoru; Takada, Fumiki; Kato, Yoshiaki; Takeda, Takashi; Takahashi, Hiroyuki*; Nakahira, Masataka

Journal of Nuclear Materials, 307-311(Part2), p.1573 - 1577, 2002/12

https://doi.org/10.1016/S0022-3115(02)01021-8

Times Cited Count：2 Percentile：17.03(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

Neutronics analysis of the improved LEU core in JMTR

Komukai, Bunsaku; Naka, Michihiro; Tabata, Toshio; Nagao, Yoshiharu; Takeda, Takashi*; Fujiki, Kazuo

JAERI-Tech 2002-067, 75 Pages, 2002/08

JAERI-Tech-2002-067.pdf:3.41MB

no abstracts in English

JAEA Reports

Published literature on the research activities using the JMTR

Nagao, Yoshiharu; Ishii, Tadahiko; Takeda, Takashi; Fujiki, Kazuo

JAERI-Review 2002-007, 191 Pages, 2002/03

JAERI-Review-2002-007.pdf:10.97MB

The published reports on the research activities using the JMTR since 1971 to date have been surveyed by the search of literature database and questionnaire survey. This report summarized the result of survey as the title lists by research categories.

JAEA Reports

Evaluation of neutronic irradiation field of improved LEU-core in the JMTR; Comparison of neutron flux and neutron spectrum with previous LEU-core

Nagao, Yoshiharu; Takemoto, Noriyuki; Takeda, Takashi

JAERI-Tech 2001-069, 83 Pages, 2001/10

JAERI-Tech-2001-069.pdf:4.76MB

no abstracts in English

JAEA Reports

Mechanical properties of type 316L stainless steel welded joint for vacuum vessel of ITER, 2; Neutron irradiation tests and post-irradiation experiments

Saito, Shigeru; Fukaya, Kiyoshi; Ishiyama, Shintaro; Amezawa, Hiroo; Yonekawa, Minoru; Takada, Fumiki; Kato, Yoshiaki; Takeda, Takashi; Takahashi, Hiroyuki*; Koizumi, Koichi

JAERI-Tech 2001-035, 81 Pages, 2001/06

JAERI-Tech-2001-035.pdf:18.91MB

no abstracts in English

JAEA Reports