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Hirano, Shinichi*; Nagaoka, Toru*; Ise, Kotaro; Amano, Yuki; Matsumoto, Norio*
Zairyo To Kankyo, 64(12), p.535 - 539, 2015/12
To obtain the knowledge about the corrosion ability and its mechanism as a target the soil environment microorganisms, lake mud was cultured with metallic iron. As a result, corrosion of carbon steel was observed with sulfate reduction and methane producing activity in brackish medium with lactate as substrate. Inhibition test of SRB and MPA suggested that SRB plays a major role for this corrosion, and MPA enhanced corrosion activity by the coexistence of SRB.
Hirano, Masashi; Yonomoto, Taisuke; Ishigaki, Masahiro; Watanabe, Norio; Maruyama, Yu; Shibamoto, Yasuteru; Watanabe, Tadashi; Moriyama, Kiyofumi
Journal of Nuclear Science and Technology, 49(1), p.1 - 17, 2012/01
Times Cited Count：97 Percentile：91.67(Nuclear Science & Technology)An unprecedented earthquake and tsunami struck the Fukushima Dai-ichi Nuclear Power Plants on 11 March 2011. Although extensive efforts have been continuing on investigations into the causes and consequences of the accident, and the Japanese Government has presented a comprehensive report on the accident in the IAEA Ministerial Conference held in June 2011, there is still much to be clarified on what happened during the accident and why. This article aims at identifying what should be clarified further about the progression of the accident at Units 1-3 through the review and analysis of information released from Tokyo Electric Power Company and government authorities. It also discusses the safety issues raised by the accident based on the insights gained, in order to contribute to establishing a new framework that pursues continuous improvement toward the highest standards of safety that can reasonably be achieved.
Ito, Kiyoshi*; Wada, Hiroo*; Omi, Shiro*; Hirano, Norio*; Ueno, Tomotake*
Geodynamics of Atotsugawa Fault System, p.45 - 63, 2007/00
The seismicity in the Atotsugawa fault area is studied in detail from the data of dense network stations, together with temporary station data. Since the observation network has been improved by adding new stations, the accuracy of the hypocenters has been accordingly raised by using the dense network data of temporary observations conducted by the Frontier Project. As a result, the distribution of hypocenters has greatly improved to reveal regional changes in focal depths along the fault. Besides, the characteristic features of seismicity along the Atotsugawa fault system are well derived from the high frequency and high-gain observations for about the last 30 years. Each distribution of focal depths along the Atotsugawa and Mozumi-Sukenobe faults is found to be vertical in the seismogenic zone of 15 km in depth from the detailed analyses of hypocenters. The distance between the two faults is 8 km at most. hypocenters are relatively deeper in the northwestern side of the fault zone compared to those in the southeast of the fault. These observation results, together with those of the GPS observations, lead to a model of the strain concentration along the fault zone. The model contains a detachment dipping towards the northwest in the middle or in the lower crust, where no earthquakes occur. In the Hida Mountains, shallow seismicity is well correlated with volcanoes. The seismicity in the mountains is different from those of the tectonic event for their focal depth and a maximum event size of M5.5. Detailed surveys in the Tateyama volcano area show that focal depths of earthquakes become shallower stepwise from the Atotsugawa fault system to the Hida Mountains. This suggests that the Atotsugawa fault ends at the foot of the Tateyama volcano.
Watanabe, Norio; Hirano, Masashi
Nihon Genshiryoku Gakkai-Shi, 41(6), p.628 - 638, 1999/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Watanabe, Norio; Hirano, Masashi; *
Proc. of Int. Topical Meeting on Probabilistic Safety Assessment (PSA'99), 1, p.717 - 724, 1999/00
no abstracts in English
*; Watanabe, Norio; Hirano, Masashi
JAERI-Data/Code 98-037, 193 Pages, 1998/11
JAERI-Data-Code-98-037.pdf:6.14MB
no abstracts in English
Watanabe, Norio; ; Hirano, Masashi
JAERI-Data/Code 98-023, 488 Pages, 1998/09
JAERI-Data-Code-98-023.pdf:19.01MB
no abstracts in English
Watanabe, Norio; Hirano, Masashi; Yoshida, Kazuo;
Proc. of ICNCA Nuclear Safety Culture Workshop, p.1 - 12, 1998/01
no abstracts in English
Watanabe, Norio; Hirano, Masashi
JAERI-Tech 97-036, 43 Pages, 1997/08
no abstracts in English
; Watanabe, Norio; Hirano, Masashi
IAEA-CN-61/31, 0, 15 Pages, 1995/00
no abstracts in English
Watanabe, Norio; *; *; Kumamaru, Hiroshige; Hirano, Masashi
The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering, Vol. 3, 0, p.1303 - 1310, 1995/00
no abstracts in English
Hirano, Masashi; Watanabe, Norio; *; *
Transactions of 13th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT),Vol. 4, 0, p.695 - 700, 1995/00
no abstracts in English
Watanabe, Norio; Hirano, Masashi
Journal of Nuclear Science and Technology, 29(12), p.1212 - 1223, 1992/12
no abstracts in English
Watanabe, Norio; Hirano, Masashi;
JAERI-M 91-143, 173 Pages, 1991/09
no abstracts in English
Nagaoka, Toru*; Hirano, Shinichi*; Matsumoto, Norio*; Amano, Yuki; Ise, Kotaro; Yoshikawa, Hideki
no journal, ,
no abstracts in English
Hirano, Shinichi*; Nagaoka, Toru*; Matsumoto, Norio*; Amano, Yuki
no journal, ,
In this presentation, we will introduce case studies of microbial effects on engineering barrier systems in geological disposal systems. The results of the metal corrosion experiments using mixtures of Kunigel V1 and sand as a buffer material and anaerobic metal reducing microbial consortium will be presented in this talk.
Nagaoka, Toru*; Hirano, Shinichi*; Matsumoto, Norio*; Amano, Yuki
no journal, ,
no abstracts in English
Nagaoka, Toru*; Hirano, Shinichi*; Matsumoto, Norio*; Amano, Yuki
no journal, ,
Amano, Yuki; Beppu, Hikari*; Ono, Hirokazu; Taniguchi, Naoki; Hirano, Shinichi*; Matsumoto, Norio*; Nagaoka, Toru*
no journal, ,
Nagaoka, Toru*; Hirano, Shinichi*; Matsumoto, Norio*; Amano, Yuki
no journal, ,
Hirano, Shinichi*; Nagaoka, Toru*; Matsumoto, Norio*; Amano, Yuki
no journal, ,
no abstracts in English
