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Hiraoka, Hirokazu
no journal, ,
The author reports the outline of Emergency Preparedness Research Group and one of its research results. Utilization of radiation portal monitors are being considered for contamination inspection in nuclear emergency. In this study, the practicality of the monitor was evaluated experimentally for its utilization. It was found that contamination on the tire surface equivalent to OIL4, one of the Operational Intervention Levels (OILs), could be detected sufficiently. However, it was found that it was difficult to determine whether contamination on the tire surface and wiper areas was above or below OIL4.
Hirose, Yoshiyasu
no journal, ,
no abstracts in English
Tuya, D.
no journal, ,
A new continuous-energy neutron transport Monte Carlo solver Solomon is under development at JAEA. The Solomon solver has a distinct capability of calculating criticality of continuously-varying random media expressed with randomized Weierstrass function. One important feature of any Monte Carlo transport code is a capability for sensitivity/uncertainty analysis. This presentation discusses the development of k-eigenvalue sensitivity coefficient capability for the Solomon solver.
Narukawa, Takafumi; Mihara, Takeshi; Taniguchi, Yoshinori; Kakiuchi, Kazuo; Tasaki, Yudai; Udagawa, Yutaka
no journal, ,
no abstracts in English
Hata, Kuniki; Iwata, Keiko; Shimodaira, Masaki; Ha, Yoosung; Takamizawa, Hisashi; Katsuyama, Jinya
no journal, ,
no abstracts in English
Gunji, Satoshi; Watanabe, Tomoaki; Suyama, Kenya; Araki, Shohei; Fukuda, Kodai
no journal, ,
The criticality safety research group had been conducted research using deterministic methods to ensure the criticality safety. However, the retrieval work of fuel debris in the Fukushima Dai-ichi Nuclear Power Station cannot be evaluated by the conventional criticality management methods, therefore it is necessary to develop a risk-informed control method. In this presentation, among the research activities undertaken to address these research issues, the following research topics are presented. (1) Criticality Map Database, (2) Support for the new STACY installation and certification, (3) Study of the new STACY experiments, (4) Post-Irradiation Examination (PIE) / Combustion Analysis
Kakiuchi, Kazuo; Yamauchi, Akihiro*
no journal, ,
no abstracts in English
Yamaguchi, Yoshihito; Takamizawa, Hisashi; Mano, Akihiro; Li, Y.
no journal, ,
no abstracts in English