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Machida, Masahiko; Shi, W.*; Yamada, Susumu; Miyamura, Hiroko; Yoshida, Toru*; Hasegawa, Yukihiro*; Okamoto, Koji; Aoki, Yuto; Ito, Rintaro; Yamaguchi, Takashi; et al.
Proceedings of Waste Management Symposia 2023 (WM2023) (Internet), 11 Pages, 2023/02
Aoki, Yuto; Ito, Rintaro; Kitamura, Akihiro; Omori, Takazumi; Taniguchi, Tatsuro; Ide, Hiroshi
no journal, ,
In this report, we present the validation results of the radiation source inverse estimation computation method and the effectiveness evaluation method of the "estimation system of radiation sources and dose rates" developed by JAEA. As for the validation test, the JMTR was used as the evaluation site, and the results of radiation source inverse estimation computations were compared with measured data. As a result, it was confirmed that the hot spot could be estimated approximately well. As for the effectiveness evaluation, the test field to be established at the NARREC and at the JMTR were used as the evaluation sites, and the effectiveness evaluation items such as the functions of each tool and the process of the system were summarized.
Yamada, Taichi; Aoki, Yuto; Suzuki, Soichiro; Ito, Rintaro; Kawabata, Kuniaki
no journal, ,
This paper introduces a development of evaluation methods for flight performance of small unmanned aerial vehicle (UAV) in narrow space environments. Drone use in a narrow space is expected to provide many solutions for society, such as an inspection of plant equipment or house surveying after disaster and so on. While, in a narrow space, drone performance is restricted, for example, there are obstacles, GNSS (Global Navigation Satellite System) is denied, and it is difficult to discuss the performance of drone. Thus, the aim of the evaluation methods is to describe a drone flight performance in an easy-to-understand form, for industrial boosting. This paper explains the approach of our evaluation method and how to proceed with the development while incorporating opinions from drone users and providers. In addition, this paper describes prototypes of evaluation method for observation of obstacles, and a preliminary experiment to discuss the need of evaluation method for observation of obstacles for narrow space drone flight.
Aoki, Yuto; Ito, Rintaro; Kitamura, Akihiro; Machida, Masahiko; Suzuki, Masahiro; Omori, Takazumi; Taniguchi, Tatsuro; Ide, Hiroshi
no journal, ,
Suzuki, Masahiro; Aoki, Yuto; Machida, Masahiko; Ito, Rintaro; Kawabata, Kuniaki; Yamaguchi, Takashi; Okamoto, Koji
no journal, ,
Suzuki, Masahiro; Aoki, Yuto; Yamaguchi, Takashi; Machida, Masahiko; Miyamura, Hiroko; Okamoto, Koji
no journal, ,
In order to facilitate the full-scale implementation of fuel debris removal at the Tokyo Electric Power Fukushima Daiichi Nuclear Power Plant (hereinafter referred to as 1F), it is necessary to establish a safe access route within the highly radiation-intensive reactor building (hereinafter referred to as "R/B"). For the purpose of the establishment, it requires environmental improvements such as decontamination of highly-intensive radiation sources and shielding measures. Based on the radiation dose measurement data at the site, Japan Atomic Energy Agency (JAEA) has examined inverse estimation scheme of highly-intensive radiation sources and developed a system that incorporates not only virtual reality (VR) but also mixed reality (MR, AR) to evaluate the effectiveness of decontamination and shielding measures. This report presents an overview of the research and development achievements to date and introduces necessary efforts for enhancing functionality to ensure practical applications at 1F.
Yamada, Taichi; Aoki, Yuto; Suzuki, Soichiro; Ito, Rintaro; Kawabata, Kuniaki
no journal, ,
We develop test methods for Unmanned Aircraft System (UAS) mobility evaluation in a narrow space. This development aims to provide an easy-to-understand evaluation for people without technical knowledge, such as UAS users, and to boost the UAS industry. To indicate UAS performance in an easy-to-understand, the test methods in this research evaluate how much the UAS can do the task based on actually performing the test task in the test field. In addition, the test methods have variable environmental factors that dominate the task performance to discuss the UAS's environmental applicability for facilitating UAS usage scenario expansion. Because accepting the test methods for UAS users and manufacturers is essential for boosting the industry, this development is proceeding while discussing with UAS users and manufacturers. This paper introduces the development of a test method for evaluating UAS mobility for ascending through an aperture.
Yamada, Taichi; Aoki, Yuto; Suzuki, Soichiro; Ito, Rintaro; Kawabata, Kuniaki
no journal, ,
We develop UAS test method to evaluate its mobility capability in a narrow space. This research aims to provide an easy-to-understand evaluation of UAS environmental applicability for UAS boosting industry. This paper introduces an experiment to investigate the influence of UAS flight from a confined environment. In the experiment, we evaluate UAS mobility with 2 test filed, one open and the other confined, and compare these evaluation results. Through the experiment, we found that in a confined space, UAS makes a rocking motion and is attracted to walls when flying nearby the wall, and stable flight becomes difficult as a result.