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Hiyama, Kazuhisa; Hanawa, Nobuhiro; Kurosawa, Akihiko; Eguchi, Shohei; Hori, Naohiko; Kusunoki, Tsuyoshi; Ueda, Hisao; Shimada, Hiroshi; Kanda, Hiroaki*; Saito, Isamu*
JAEA-Technology 2013-045, 32 Pages, 2014/02
JAEA-Technology-2013-045.pdf:5.83MB
This report summarizes regarding to develop of real-time multifunctional access control system which is able to manage worker's access control and exposure dose at real-time in the reactor building, besides worker's location and worker might be fall down by accident.
Goto, Minoru; Takamatsu, Kuniyoshi; Nakagawa, Shigeaki; Ueta, Shohei; Hamamoto, Shimpei; Ohashi, Hirofumi; Furusawa, Takayuki; Saito, Kenji; Shimazaki, Yosuke; Nishihara, Tetsuo
JAEA-Technology 2009-053, 48 Pages, 2009/10
JAEA-Technology-2009-053.pdf:3.41MB
Preliminary studies on the HTTR (High Temperature engineering Test Reactor) tests were conducted to obtain characteristics and demonstration data which were required to develop commercial HTGRs (high temperature gas-cooled reactors). The tests proposed in this study are as follows: nuclear heat supply characteristics tests, burned core tests, reactivity insertion tests, safety demonstration tests, fuel characteristics tests, annular core tests, fuel failure tests, tritium measurement tests, and health confirmation tests of high temperature equipments. Requirements for a development of commercial HTGRs and confirmation methods of the requirements by the HTTR tests were summarized. Preliminary analyses were performed for the burned core test and the safety demonstration test to obtain prediction data, which is compared with experimental data. Additionally, a feasibility analysis was performed on four types annular cores, which is composed of the HTTR's fresh fuels, from the point of view of shutdown margin and excess reactivity.
Tanoi, Keitaro*; Hamada, Yosuke*; Seyama, Shohei*; Saito, Takayuki*; Iikura, Hiroshi; Nakanishi, Tomoko*
Nuclear Instruments and Methods in Physics Research A, 605(1-2), p.179 - 184, 2009/06
Times Cited Count：3 Percentile：27.67(Instruments & Instrumentation)Nakagawa, Shigeaki; Fujimoto, Nozomu; Shimakawa, Satoshi; Nojiri, Naoki; Takeda, Takeshi; Saikusa, Akio; Ueta, Shohei; Kojima, Takao; Takada, Eiji*; Saito, Kenji; et al.
JAERI-Tech 2002-069, 87 Pages, 2002/08
JAERI-Tech-2002-069.pdf:10.12MB
Rise-to-power test in the HTTR has been performed from April 23rd to June 6th in 2000 as phase 1 test up to 10MW, from January 29th to March 1st in 2001 as phase 2 test up to 20MW in the rated operation mode and from April 14th to June 8th in 2001 as phase 3 test up to 20MW in the high temperature test operation mode. Phase 4 test to achieve the thermal reactor power of 30MW started from October 23rd in 2001. On December 7th it was confirmed that the thermal reactor power reached to 30MW and the reactor outlet coolant temperature reached to 850
C. JAERI obtained the certificate of pre-operation test from MEXT because all the pre-operation tests by MEXT were passed successfully. From the test results of rise-up-power test up to 30MW, the performance of reactor and cooling system were confirmed, and it was confirmed that an operation of reactor facility could be performed safely. Some problems to be solved were found through tests. By means of solving them, the reactor operation with the reactor outlet coolant temperature of 950C will be achievable.
Sawa, Kazuhiro; Sumita, Junya; Ueta, Shohei; Takahashi, Masashi; Tobita, Tsutomu*; Hayashi, Kimio; Saito, Takashi; Suzuki, Shuichi*; Yoshimuta, Shigeharu*; Kato, Shigeru*
JAERI-Research 2002-012, 39 Pages, 2002/06
JAERI-Research-2002-012.pdf:3.12MB
no abstracts in English
Sawa, Kazuhiro; Sumita, Junya; Ueta, Shohei; Suzuki, Shuichi*; Tobita, Tsutomu*; Saito, Takashi; Minato, Kazuo; Koya, Toshio; Sekino, Hajime
Journal of Nuclear Science and Technology, 38(6), p.403 - 410, 2001/06
Times Cited Count：7 Percentile：48.18(Nuclear Science & Technology)no abstracts in English
Saito, Seiko; Kato, Shohei
Proceedings of 10th International Congress of the International Radiation Protection Association (IRPA-10) (CD-ROM), 7 Pages, 2000/05
no abstracts in English
Kozuka, Shohei*; Saito, Junichi; Ueda, Mikito*; Matsushima, Hisayoshi*
no journal, ,
no abstracts in English
Komatsu, Reiji*; Saito, Shohei*; Fukunari, Masafumi*; Yamaguchi, Toshikazu*; Komurasaki, Kimiya*; Oda, Yasuhisa; Kajiwara, Ken; Takahashi, Koji; Sakamoto, Keishi
no journal, ,
no abstracts in English
Kurita, Satoshi*; Saito, Shohei*; Fukunari, Masafumi*; Yamaguchi, Toshikazu*; Komurasaki, Kimiya*; Oda, Yasuhisa; Kajiwara, Ken; Takahashi, Koji; Sakamoto, Keishi
no journal, ,
no abstracts in English
Fukunari, Masafumi*; Yamaguchi, Toshikazu*; Saito, Shohei*; Kurita, Satoshi*; Komurasaki, Kimiya*; Oda, Yasuhisa; Kajiwara, Ken; Takahashi, Koji; Sakamoto, Keishi
no journal, ,
no abstracts in English
Saito, Shohei*; Komatsu, Reiji*; Fukunari, Masafumi*; Komurasaki, Kimiya*; Oda, Yasuhisa; Sakamoto, Keishi
no journal, ,
no abstracts in English
Kurita, Satoshi*; Saito, Shohei*; Fukunari, Masafumi*; Yamaguchi, Toshikazu*; Komurasaki, Kimiya*; Oda, Yasuhisa; Kajiwara, Ken; Takahashi, Koji; Sakamoto, Keishi
no journal, ,
no abstracts in English
Fukunari, Masafumi*; Yamaguchi, Toshikazu*; Saito, Shohei*; Kurita, Satoshi*; Komatsu, Reiji*; Komurasaki, Kimiya*; Oda, Yasuhisa; Kajiwara, Ken; Takahashi, Koji; Sakamoto, Keishi
no journal, ,
no abstracts in English
