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Nakashima, Hiroshi
JAEA-Conf 2020-001, p.69 - 74, 2020/12
J-PARC (Japan Proton Accelerator Research Complex) is a high-energy proton accelerator complex of the world's highest beam power. Because of its very high beam power and its high energy as well as the large-scale accelerator complex, we encountered some very difficult problems on radiation safety design. Various examinations and countermeasures were considered in order to overcome the difficulty. This paper introduces some of them. In addition, some new knowledge obtained during 10 years after completion are described.
Yamaguchi, Yasuhiro; Hirayama, Hideo*
Journal of Nuclear Science and Technology, 41(Suppl.4), p.498 - 501, 2004/03
JAERI-Universities Joint Research Project has been carried out to study the radiation safety in high-energy proton accelerator facilities since 2000. Ten groups from 2 research institutes and 5 universities joined in the project to tackle 3 major subjects below, using a quasi-monoenergetic neutron field at TIARA facility of JAERI. The groups had annual meetings to discuss the plan and progress of the studies and exchange their views for effective cooperation. (1)Studies on basic physical data necessary for neutron dosimetry. (2)Development of neutron monitors and dosimeters for several tens MeV region. (3)Studies on formation of radioactive aerosols and gases for internal dosimetry.
Miya, Naoyuki
Purazuma, Kaku Yugo Gakkai-Shi, 73(8), p.805 - 811, 1997/08
no abstracts in English
Isotope News, 0(512), p.53 - 56, 1997/01
no abstracts in English
Ikeda, Yujiro; *
Purazuma, Kaku Yugo Gakkai-Shi, 72(3), p.243 - 248, 1996/00
no abstracts in English
*;
Sefuthi Nyusu, 0(441), p.2 - 5, 1995/10
no abstracts in English
Dai-10-Kai Kogai Boshi Taisaku Jirei Kenkyu Happyokai Jireishu, p.6 - 11, 1990/00
no abstracts in English
; ; ; ; ;
Int.J.Appl.Radiat.Isot., 26(11), p.671 - 675, 1975/11
Times Cited Count：4no abstracts in English
Katayama, Atsushi; Sato, Seichi*; Jitsukawa, Shiro*
no journal, ,
Resulting in a decrease in the Great East Japan Earthquake, as a result of the severe accident Fukushima Daiichi Nuclear Power Plant (Fukushima Daiichi NPP), radioactive material was released from the furnace. Iwaki City, Fukushima with the National College of Technology, victims from the adjacent region coexist. Under these circumstances, people and the building and construction related to the practice in decontamination, etc., educators involved with the sensitive parent problem of exposure is, every day while beset with doubts and anxiety in a variety of ways in the information about the radiation has been spent. Intended for people like that, Fukushima National College of Technology, has organized and cooperation, a lecture on radiation safety and radiation with the help of nuclear power mechanism too much this year. I will report details and results of the activities here.
Nakai, Toshiro; Sato, Seichi*; Kinoshita, Hirotsugu*; Jitsukawa, Shiro*; Aoyagi, Katsuhiro*; Nara, Koichi*; Suzuki, Shigekazu*; Katayama, Atsushi
no journal, ,
no abstracts in English
Harada, Masahide; Kawakami, Kazuhiro*; Aizawa, Kazuya; Soyama, Kazuhiko; Ishikado, Motoyuki*; Hiramatsu, Hideyuki*; Hashimoto, Norimichi*; Hosoya, Tomonori*; Ichimura, Katsuhiro*
no journal, ,
no abstracts in English
Yoshida, Hiroko*; Yasuda, Hiroshi*; Takahashi, Fumiaki; Dobashi, Ryuta*; Hattori, Takatoshi*
no journal, ,
The Japan Health Physics Society (JHPS) is a member of the International Radiation Protection Association (IRPA). Many researchers and technicians of radiation protection join JHPS in Japan. The international affairs committee in JHPS holds a session to introduce recent trends and information about radiation protection over the world in annual meeting. In the 51st Meeting, Dr. Yoshida (Tohoku Univ.) will talk about the recent activities of task groups in IRPA. Dr. Yasuda will explain radiation protection in aviation given by ICRP Publication 132. Dr. Dobashi will introduce recent discussions on the safety standards by IAEA. Takahashi (JAEA) will explain Occupational Intakes of Radionuclides (OIR) given by ICRP Publications 130, 134 and 137.
Harada, Masahide; Kawakami, Kazuhiro*; Aizawa, Kazuya; Soyama, Kazuhiko; Ishikado, Motoyuki*; Hiramatsu, Hideyuki*; Hashimoto, Norimichi*; Hosoya, Tomonori*; Ichimura, Katsuhiro*
no journal, ,
no abstracts in English
Aita, Takahiro; Hirano, Hiroshi*; Kimura, Yasuhisa; Shibanuma, Tomohiro; Yoshida, Masato; Nagai, Yuya; Asakawa, Jun; Shuji, Yoshiyuki
no journal, ,
The newly developed Plastic enclosure tents have reliable airtightness and can be set up in a short time with the small number of persons. Also, in order to prevent the spread of contamination, the exhaust device secures the internal airflow line, and the radiation management device measures the concentration of radioactive materials in the air are in real time. Furthermore, by setting up a multiple of evacuation routes, the decontamination time is shortened even when there are many contaminated persons. Therefore, it is possible to quickly evacuate the contaminated person by having both radiation safety and setting up that can quickly respond to a large-scale body contamination accident.
Harada, Masahide; Kawakami, Kazuhiro*; Oku, Takayuki; Aizawa, Kazuya; Ishikado, Motoyuki*; Hashimoto, Norimichi*; Hosoya, Tomonori*; Ichimura, Katsuhiro*
no journal, ,
no abstracts in English
Harada, Masahide; Kawakami, Kazuhiro*; Oku, Takayuki; Aizawa, Kazuya; Ishikado, Motoyuki*; Hashimoto, Norimichi*; Hosoya, Tomonori*
no journal, ,
no abstracts in English
