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Murakami, Kenta*; Onizawa, Kunio; Yamamoto, Akio*
Nihon Genshiryoku Gakkai-Shi ATOMO, 66(4), p.199 - 202, 2024/04
The Standards Committee of Atomic Energy Society of Japan has been leading activities related to long-term operation through the revision of the Code of Practice for Aging Management, and we believe that we must continue to make important contributions in light of recent changes in laws and regulations. This paper recapitulates the discussions in the special session conducted at the 2023 fall meeting, and describes the efforts toward safe long-term operation and the points to keep in mind in the standardization of such activities. The important points are (1) to make effective use of knowledge found over time, (2) not to overlook new knowledge that has a significant impact on safety, including obsolescence, (3) to assign a level of importance to the response based on the impact on safety and the likelihood of its occurrence, and (4) to contribute to the establishment of an international knowledge base.
Minehara, Eisuke
Proceedings of 2nd Annual Meeting of Particle Accelerator Society of Japan and 30th Linear Accelerator Meeting in Japan, p.55 - 56, 2005/07
The next generation high brightness and high current electron source like a photo cathode, a thermionic cathode, a crystal Diamond electron cathode and others would be expected to realize the next generation ERL (energy recovery linac) based light source and SASE X-ray free-electron laser. The JAERI FEL group has recently started to develop a new crystal Diamond electron cathode technology for high current, high brightness, and long life electron source. In the presentation, we plan to explain and to discuss our strategy and a preliminary experimental measurements of the crystal Diamond cathode, and related Diamond cathode evaluation system.
Hiura, Nobuo*; Yamaura, Takayuki; Motohashi, Yoshinobu*; Kobiyama, Mamoru*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 1(2), p.202 - 208, 2002/06
The purpose of this study is to develop oxygen sensor which can measure the oxygen potential of the fuel in a nuclear reactor. The oxygen sensor with CaO stabilized zirconia solid electrolyte has been specially designed in order to prolong its life time. Electromotive force (EMF) of solid galvanic cell Ni/NiO|ZrO-CaO|Fe/FeO was measured in both the out-pile tests and the in-situ tests using Japan Material Testing Reactor (JMTR), and the characteristics of EMF was discussed. In the out-pile test, it was found that the EMF was almost equal to the theoretical values at temperatures ranging from 700 to 1,000, and the life span of the sensor was very long up to 980h at 800. In the in-situ test, it was found that the EMF showed almost the reliable values up to 300 h (neutron fluence (E 1 MeV) 1.510 m), at temperatures from 700 to 900. The imprecision of the EMF was found to be within 6% of the theoretical values up to 1,650 h irradiation time (neutron fluence (E 1 MeV) 8.010 m) at 800. The oxygen sensors were found to be applicable for the oxygen potential measurement of the fuels in a reactor.
Kurata, Yuji; Hamada, Shozo; Nakajima, Hajime
Proc. of 10th Int. Conf. on Strength of Materials; ICSMA 10, 0, p.677 - 680, 1994/00
no abstracts in English
*; *; *; Yagi, Toshiaki; Seguchi, Tadao
Proc. on the Electrical Electronics Insulation Conf. and Electrical Manufacturing & Coil Winding Conf., p.703 - 706, 1993/00
no abstracts in English
Naito, Yoshitaka; Furuta, Teruo; Ichikawa, Hiroki; Takano, Hideki
JAERI-M 91-028, 151 Pages, 1991/03
no abstracts in English
;
Nuclear Instruments and Methods in Physics Research A, 249, p.133 - 136, 1986/00
Times Cited Count:3 Percentile:55.17(Instruments & Instrumentation)no abstracts in English
; Ohara, Yoshihiro
Review of Scientific Instruments, 55(10), p.1625 - 1631, 1984/00
Times Cited Count:4 Percentile:59.6(Instruments & Instrumentation)no abstracts in English
;
Nuclear Instruments and Methods, 206, p.331 - 333, 1983/00
no abstracts in English