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Inaba, Yoshitomo; Nishihara, Tetsuo; Moriyama, Koichi*; Nakamura, Masashi*
JAERI-Data/Code 2002-014, 255 Pages, 2002/07
JAERI-Data-Code-2002-014.pdf:21.69MB
One of the most important safety design issues for an HTGR hydrogen production system is to ensure reactor safety against fire and explosion accidents in the hydrogen production plant because a large amount of combustible fluid is dealt with in the system. JAERI has the demonstration test plan to connect the hydrogen production system with the HTTR. In the plan, we considered effective measures against the fire and explosion accidents in the HTTR hydrogen production system, which were applicable to the HTGR hydrogen production system of a commercial base, and also developed the P2A code system to analyze event sequences and consequences in detail, on assumed fire and explosion accidents in the HTGR hydrogen production system and the HTTR hydrogen production system. The P2A can analyze the process of leakage, dispersion, ignition, and combustion including deflagration and detonation of the combustible fluid in the internal and external area of the reactor building. In this report, we describe the outline and the usage of the P2A, and the results of preliminary calculations.
Nishihara, Tetsuo; *
JAERI-Tech 99-061, 70 Pages, 1999/09
no abstracts in English
*; Nishihara, Tetsuo
JAERI-Tech 98-002, 59 Pages, 1998/01
no abstracts in English
Ohno, Shuji;
PNC TN9410 92-370, 54 Pages, 1992/11
Conputational code SOFIRE-M3 has been developed to evaluate the thermal consequences which would be brought by the sodium columnar leak and fire accident postulated in the FBRs. New code is the improved version of SOFIRE-MII and has following features. (1)Sodium columnar combustion rate is calculated from the empirical formula which has been derived from the results of Run-E3 test series and has the terms of sodium leak rate, leak height, and oxygen concentration in the atmosphere. (2)Calculational parameters of heat distribution fraction, which determine the reaction heat transferred to both sodium and gas, have been optimized by the post-test calculations of Run-E3 using the SOFIRE-M3 code. The code predicts heat transfer phenomena within 30% of accuracy when the optimized parameters are used. Calculations of large-scale sodium leak and fire tests Run-E2 and Run-D2, which had been performed at the SAPFIRE facility in 1985 and 1986 respectively, showed good agreement between code calculated and measured data. This SOFIRE-M3 code can contribute in the near future to the more optimized designing and safety evaluation of FBR p1ant. Refinement of the empirical formula and improvement of the code remain as future subjects related to the effect of sodium leak rate on the columnar combustion rate.
Nakamura, Shoji; Toh, Yosuke; Kimura, Atsushi; Hatsukawa, Yuichi; Harada, Hideo; Ishiwatari, Yuki*; Saito, Isao*; Yasumi, Atsushi*; Mabuchi, Yukio*; Nakagawa, Tsutomu*; et al.
no journal, ,
no abstracts in English
Nakamura, Shinichi*; Kudo, Junichi*; Suzui, Nobuo; Kawachi, Naoki; Ito, Sayuri; Ishioka, Noriko; Ito, Masashi*; Kawamoto, Tomohiko*; Matsumoto, Shinichi*; Kodama, Ikuko*; et al.
no journal, ,
no abstracts in English
L. cv Choukoukoku, Cd hyper-accumulating rice cultivarNakamura, Shinichi*; Kudo, Junichi*; Suzui, Nobuo; Kawachi, Naoki; Ito, Sayuri; Ishioka, Noriko; Ito, Masashi*; Kawamoto, Tomohiko*; Matsumoto, Shinichi*; Kodama, Ikuko*; et al.
no journal, ,
no abstracts in English
L. cv Choukoukoku, Cd hyper-accumulating rice cultivarNakamura, Shinichi*; Kudo, Junichi*; Rai, Hiroki*; Hattori, Hiroyuki*; Chino, Mitsuo*; Suzui, Nobuo; Ito, Sayuri; Kawachi, Naoki; Ishioka, Noriko; Fujimaki, Shu; et al.
no journal, ,
no abstracts in English
Nakamura, Shinichi*; Suzuki, Yasuhiro*; Suzui, Nobuo; Ito, Masashi*; Ishii, Satomi; Kawachi, Naoki; Rai, Hiroki*; Hattori, Hiroyuki*; Fujimaki, Shu
no journal, ,
no abstracts in English
Cd translocation and accumulation in rice plants (oryza sativa) by using PETIS (Positron Emitting Tracer Imaging System); Comparison between Nippon-Bare and Cho-kou-kokuNakamura, Shinichi*; Kudo, Junichi*; Suzui, Nobuo; Kawachi, Naoki; Ito, Sayuri*; Ishioka, Noriko; Ito, Masashi*; Kawamoto, Tomohiko*; Matsumoto, Shinichi*; Kodama, Ikuko*; et al.
no journal, ,