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Journal Articles

Development of a design support system for geological disposal of radioactive waste using a CIM concept

Sugita, Yutaka; Kageyama, Takeshi*; Makino, Hitoshi; Shimbo, Hiroshi*; Hane, Koji*; Kobayashi, Yuichi*; Fujisawa, Yasuo*; Makanae, Koji*; Yabuki, Nobuyoshi*

Proceedings of 17th International Conference on Computing in Civil and Building Engineering (ICCCBE 2018) (Internet), 8 Pages, 2018/06

This paper presents status of development of the iSRE (integrated system for repository engineering) as a design supporting system that enables rational designing of a geological disposal repository. The complimentary technique of construction information modeling/management (CIM) has been employed for the development of iSRE. CIM uses a shared three dimensional (3D) model of associated data through common data models. In this paper, as a design support system that conforms to the characteristics of information management about engineering technology represented by repetition of design during the disposal project period, we examined and designed the function of the "iSRE", constructed a prototype, and confirmed the function through a trial simulating actual work in the disposal project. As a result, with respect to the functions of DB and IF of the iSRE, we got a prospect that these functions can be the foundation of information management on engineering technology, and development of the prototype of the iSRE and its test run extracted issues for practical use of such system.

JAEA Reports

Study on the System Development for Evaluating Long-Term Alteration of Hydraulic Field in Near Field II (Summary)

Okutsu, Kazuo*; Morikawa, Seiji*; Takamura, Hisashi*; Hane, Koji*; Tabei, Kazuto*; Sahara, Fumihiro*; Murakami, Takeshi*

JNC TJ8400 2003-050, 140 Pages, 2003/02

JNC-TJ8400-2003-050.pdf:3.13MB

The system development for evaluating long-term alteration of hydraulic field in Near Field was examined.

JAEA Reports

Study on the System Development for Evaluating Long-Term Alteration of Hydraulic Field in Near Field II

Okutsu, Kazuo*; Morikawa, Seiji*; Takamura, Hisashi*; Hane, Koji*; Tabei, Kazuto*; Sahara, Fumihiro*; Murakami, Takeshi*

JNC TJ8400 2003-049, 265 Pages, 2003/02

JNC-TJ8400-2003-049.pdf:7.88MB

The system development for evaluating long-term alteration of hydraulic field in Near Field was examined.

JAEA Reports

Study on the system development for evaluating long-term alteration of hydraulic field in Near Field

Okutsu, Kazuo*; *; Takamura, Hisashi*; Hane, Koji*; Takase, Hiroyasu*; DAVID SAVAGE*; Inagaki, Manabu*

JNC TJ8400 2002-032, 115 Pages, 2002/02

JNC-TJ8400-2002-032.pdf:1.28MB

For the high performance evaluation of reliability of TRU waste repository, the system development for evaluating long-term alteration in consideration of the changes action of barrier materials of hydraulic field in Near Field is required. In this research, system development for evaluating long-term alteration of hydraulic field in Near Field was examined. Examination of the basic specification of chemical/dynamic alteration action analysis system used as the composition element of this system and a whole system were performed. The research result of this year is shown below. (1)The system by which the chemical changes happened by Near Field as influence of the exudation liquid from cement material are evaluated was examined. In this year, document investigation about the various processes about chemical alteration and extraction of a choice, presentation of the uncertainty about a model or data, preliminary modeling, a simple analysis tool creation and sensitivity analysis, extraction of the process which should be taken into consideration in a system valuation modeling and a phenomenon analysis model, and a corresponding mathematics model, optimization of the software composition for development of a system valuation modeling, the exercise by the preliminary system analysis model, the experiment plan for the corroboration of a model were shown. (2)In consideration of change of the physical characteristic accompanying chemical alteration of bentonite material and cement material, the system by which the dynamic changes action of repository is evaluated was examined. In this year, arrangement of the dynamics action of repository for long-term were shown. Extraction of a phenomenon made applicable to evaluation was shown. And the dynamic models were investigated and the prototype of the dynamics model that can take into consideration the characteristic of bentonite material was shown. And the basic composition of a dynamic changes action analysis system was shown.

JAEA Reports

Study on the system development for evaluating long-term alteration of hydraulic field in Near Field

Okutsu, Kazuo*; *; Takamura, Hisashi*; Hane, Koji*; Takase, Hiroyasu*; DAVID SAVAGE*; Inagaki, Manabu*

JNC TJ8400 2002-031, 354 Pages, 2002/02

JNC-TJ8400-2002-031.pdf:5.13MB

For the high performance evaluation of reliability of TRU waste repository, the system development for evaluating long-term alteration in consideration of the changes action of barrier materials of hydraulic field in Near Field is required. In this research, system development for evaluating long-term alteration of hydraulic field in Near Field was examined. Examination of the basic specification of chemical/dynamic alteration action analysis system used as the composition element of this system and a whole system were performed. The research result of this year is shown below. (1)The system by which the chemical changes happened by Near Field as influence of the exudation liquid from cement material are evaluated was examined. In this year, document investigation about the various processes about chemical alteration and extraction of a choice, presentation of the uncertainty about a model or data, preliminary modeling, a simple analysis tool creation and sensitivity analysis, extraction of the process which should be taken into consideration in a system valuation modeling and a phenomenon analysis model, and a corresponding mathematics model, optimization of the software composition for development of a system valuation modeling, the exercise by the preliminary system analysis model, the experiment plan for the corroboration of a model were shown. (2)In consideration of change of the physical characteristic accompanying chemical alteration of bentonite material and cement material, the system by which the dynamic changes action of repository is evaluated was examined. In this year, arrangement of the dynamics action of repository for long-term were shown. Extraction of a phenomenon made applicable to evaluation was shown. And the dynamic models were investigated and the prototype of the dynamics model that can take into consideration the characteristic of bentonite material was shown. And the basic composition of a dynamic changes action analysis system was shown.

JAEA Reports

None

Fukazawa, E.*; Tanaka, M.*; Yamamoto, H.*; Taira, K.*; Yamamoto, M.*; Okutsu, Kazuo*; Hane, Koji*; Aoyagi, Takayoshi*; Morikawa, Seiji*; Furuichi, Mitsuaki*

PNC TJ1100 98-007, 60 Pages, 1998/02

PNC-TJ1100-98-007.pdf:4.47MB

None

JAEA Reports

None

Fukazawa, E.*; Tanaka, M.*; Yamamoto, H.*; Taira, K.*; Yamamoto, M.*; Okutsu, Kazuo*; Hane, Koji*; Aoyagi, Takayoshi*; Morikawa, Seiji*; Furuichi, Mitsuaki*

PNC TJ1100 98-006, 434 Pages, 1998/02

PNC-TJ1100-98-006.pdf:59.14MB

None

JAEA Reports

Design study on H.L.W. geologic repository, IV; for 1984

Ara, Hiroshige*; Fukumitsu, Kenji*; Iizuka, Yunosuke*; Ishii, Takashi*; Izumiya, Yasushi*; Imazu, Masanori*; Utsugida, Yoshizo*; Hasegawa, Makoto*; Maeda, Masaya*; Yabe, Yukio*; et al.

PNC TJ199 84-04VOL1, 20 Pages, 1984/03

PNC-TJ199-84-04VOL1.pdf:0.88MB

None

Oral presentation

Developing the database on medical exposure to CT in NIRS in collaboration with WAZA-ARI

Akahane, Keiichi*; Ono, Koji*; Okuda, Yasuo*; Sato, Kaoru; Takahashi, Fumiaki; Ban, Nobuhiko*; Shimada, Yoshiya*; Endo, Akira; Kai, Michiaki*

no journal, , 

The WAZA-ARI is a dose calculator of medical exposures on X-ray CT examinations, which is the web-based program based on the simulation data of voxel phantoms of Japanese adults and a 4-y girl. After the development, the WAZA-ARI has been installed in a web server of National Institute of Radiological Sciences (NIRS), and opened to the public as trial uses on Dec 2012. The user authentication function and the data input pages by users have been adding to the WAZA-ARI to store the calculated data and the inputted data of doses and frequencies of X-ray CT examinations into the database on medical exposure in NIRS for the analyses of the CT exposures. The use of these functions and WAZA-ARI II, which can calculate the doses of different patients' body sizes, will provide the basic and useful data on the CT exposures for the radiation protection in medicine, because the portion of CT doses in the overall medical exposures are relatively high compared to other radiological diagnoses.

Oral presentation

Development and utilization of Web-based open system for CT dose calculator, WAZA-ARIv2

Koba, Yusuke*; Nakada, Yoshihiro*; Matsumoto, Shinnosuke*; Akahane, Keiichi*; Ono, Koji*; Sato, Kaoru; Takahashi, Fumiaki; Endo, Akira; Shimada, Yoshiya*; Kai, Michiaki*

no journal, , 

While CT scan is useful for diagnosis, exposure dose derived from CT scan is relatively high. Therefore, it is important to manage patient doses and to prevent the excess exposures in young patients. JAEA developed the CT dose calculator, WAZA-ARIv2 under the collaboration research project with the National Institute of Radiological Sciences and the Oita University of Nursing and Health Sciences. In WAZA-ARIv2, users can accurately calculate exposure doses through the browser under consideration of patients information about sexes, ages (0y, 1y, 5y, 10y, 15y and adult) and fatness (small, large and extra-large body sizes). The functions of registration and database compilation of CT scan conditions and patient doses are newly added to a WAZA-ARIv2. Users can compare the distribution of patient doses in Japan with those in user's medical institution. Therefore, it will be expected that WAZA-ARIv2 can contribute the management and optimization of patients doses due to CT scan.

Oral presentation

Evaluation of the tube-voltage dependence of organ doses in X-ray CT scans using Monte-Carlo calculation

Koba, Yusuke*; Matsumoto, Shinnosuke*; Nakada, Yoshihiro*; Kasahara, Tetsuji*; Akahane, Keiichi*; Okuda, Yasuo*; Sato, Kaoru; Takahashi, Fumiaki; Yoshitake, Takayasu*; Hasegawa, Takayuki*; et al.

no journal, , 

Many of the CT devices are in Japan. It is guessed that exposure doses of Japanese derived from CT scans are higher than others. Thus, it is needed to properly manage scan conditions and exposure doses of individual patients. JAEA developed WAZA-ARI under the collaboration research project with the National Institute of Radiological Sciences (NIRS) and the Oita University of Nursing and Health Sciences. Practical use of new version WAZA-ARI named WAZA-ARIv2 began on January 30, 2015 at the web server in NIRS. In WAZA-ARIv2, users can calculate patients doses by using only standard condition (120 kV) of X-tube voltage. In recent years, CT scans at low tube voltage against pediatric patients with high radiosensitivity are increasing. In this study, spectrum of X-ray derived from CT scan at low tube voltage was examined, and was defined in "usrsors.f" file of PHITS. We reported the characteristics of X-ray and organ doses derived from CT scan at low tube voltage (80 kV).

Oral presentation

Calculating dose distribution from diagnostic CT depending on age and physique size of patients; Development of dose assessment web - system WAZA-ARI

Ono, Koji*; Koba, Yusuke*; Matsumoto, Shinnosuke*; Nakada, Yoshihiro*; Okuda, Yasuo*; Akahane, Keiichi*; Sato, Kaoru; Takahashi, Fumiaki; Yoshitake, Takayasu*; Hasegawa, Takayuki*; et al.

no journal, , 

In medical treatment, CT scan is useful diagnostic method. On the other hand, exposure doses derived from CT scans are dependent on body sizes of patients. Therefore, consideration of body sizes is essential for accurate dose assessment of individual patients. JAEA developed the CT dose calculator, WAZA-ARIv2 under the collaboration research project with the National Institute of Radiological Sciences and the Oita University of Nursing and Health Sciences. WAZA-ARIv2 enable users to accurately calculate exposure doses of patients with sexes, ages (0y, 1y, 5y, 10y, 15y and adult) and fatness (small, large and extra-large body sizes). In the future, we will be plans to add the dose calculation functions corresponding to the scan conditions at low tube voltage and multi-detector row (more 80) CT devices to WAZA-ARIv2. We reported the system and future plans of WAZA-ARIv2 corresponding to dose calculation of patients with various body sizes.

Oral presentation

Development of the Integrated System for Repository Engineering (iSRE), 4; Current status of the prototype of the iSRE

Yoshino, Hiroyuki*; Fujisawa, Yasuo*; Kobayashi, Yuichi*; Sugita, Yutaka; Kageyama, Takeshi; Hane, Koji*; Sahara, Fumihiro*; Yabuki, Nobuyoshi*; Makanae, Koji*

no journal, , 

This paper reports development of ISRE (the Integrated System for Repository Engineering), as a knowledge management tool on the repository design and engineering technology, which manages and inherits the information and knowledge of each phase of the disposal project of the radioactive waste during around 100 years, which also enables reasonable design of the repository by using accumulated and integrated information. Content of this paper is current status of the prototype of the iSRE.

Oral presentation

Development of the Integrated System for Repository Engineering (iSRE), 5; Utilization of the protype of the iSRE

Hane, Koji*; Sahara, Fumihiro*; Sugita, Yutaka; Kageyama, Takeshi; Fujisawa, Yasuo*; Yoshino, Hiroyuki*; Kobayashi, Yuichi*; Yabuki, Nobuyoshi*; Makanae, Koji*

no journal, , 

This paper reports development of ISRE (the Integrated System for Repository Engineering), as a knowledge management tool on the repository design and engineering technology, which manages and inherits the information and knowledge of each phase of the disposal project of the radioactive waste during around 100 years, which also enables reasonable design of the repository by using accumulated and integrated information. Content of this paper is outline of trial utilization of the prototype of the iSRE and the extracted issues.

Oral presentation

Analysis of effects of body sizes on organ doses due to CT examinations by using voxel phantoms

Sato, Kaoru; Takahashi, Fumiaki; Koba, Yusuke*; Ono, Koji*; Yoshitake, Takayasu*; Hasegawa, Takayuki*; Katsunuma, Yasushi*; Kasahara, Tetsuji*; Okuda, Yasuo*; Nakada, Yoshihiro*; et al.

no journal, , 

JAEA is now developing CT dose calculator named WAZA-ARIv2 in cooperation with the National Institute of Radiological Sciences. WAZA-ARIv2 has been opened to the public as full-dress uses on January 2015. WAZA-ARIv2 can perform dose assessment against 4 different body physiques by using the organ dose database, which were constructed on the basis of adult Japanese phantoms with 4 body sizes (-2$$sigma$$, average, +2$$sigma$$, +5$$sigma$$). In this study, it was found that salivary gland doses are independent on BMI, whereas lung doses are dependent on BMI. The differences in the effects of BMI on absorbed doses between salivary glands and lungs might be caused by the difference in thickness of subcutaneous soft tissues between head and thorax.

Oral presentation

Development of the Integrated System for Repository Engineering (iSRE), 6; Expansion of function for practical use of the iSRE

Numata, Taro*; Fujisawa, Yasuo*; Kobayashi, Yuichi*; Sugita, Yutaka; Kageyama, Takeshi; Hane, Koji*; Sahara, Fumihiro*; Yabuki, Nobuyoshi*; Makanae, Koji*

no journal, , 

This paper reports development of ISRE (the Integrated System for Repository Engineering), as a knowledge management tool on the repository design and engineering technology, which manages and inherits the information and knowledge of each phase of the disposal project of the radioactive waste during around 100 years, which also enables reasonable design of the repository by using accumulated and integrated information. Content of this paper is expansion of function for practical use of the iSRE.

Oral presentation

Development of the Integrated System for Repository Engineering (iSRE), 7; Utilization of for practical use of prototype of the iSRE

Hane, Koji*; Sahara, Fumihiro*; Sugita, Yutaka; Kageyama, Takeshi; Fujisawa, Yasuo*; Numata, Taro*; Kobayashi, Yuichi*; Yabuki, Nobuyoshi*; Makanae, Koji*

no journal, , 

This paper reports development of ISRE (the Integrated System for Repository Engineering), as a knowledge management tool on the repository design and engineering technology, which manages and inherits the information and knowledge of each phase of the disposal project of the radioactive waste during around 100 years, which also enables reasonable design of the repository by using accumulated and integrated information. Content of this paper is outline of trial utilization of prototype of the iSRE and the extracted issues for practical system.

Oral presentation

Analysis of organ doses by CT diagnosis for patients of optional physique by using voxel phantoms

Sato, Kaoru; Takahashi, Fumiaki; Koba, Yusuke*; Ono, Koji*; Yoshitake, Takayasu*; Hasegawa, Takayuki*; Katsunuma, Yasushi*; Kasahara, Tetsuji*; Okuda, Yasuo*; Nakada, Yoshihiro*; et al.

no journal, , 

WAZA-ARIv2 is developed as the web-based open system for CT dose calculator under joint research of JAEA, NIRS (now, QST) and Oita University of Nursing and Health Sciences. WAZA-ARIv2 can provide organ doses under consideration of the body physiques (BMI = 18, 22, 28, 37) of patients with average height of adult Japanese by using voxel phantoms developed by JAEA. In this study, we analyzed the relationship between variations of organ doses and body indices. It was found that effects of weight variations on organ doses were larger than those of height variations. Generally, thickness of the subcutaneous soft tissues is easily changed by variations of weight rather than those of height. This fact may cause the differences in variations of organ doses between weight and height.

Oral presentation

Development of methodologies for validation of groundwater flow and mass transport model, 2; A Case study using investigation data obtained at the Mizunami Underground Research Laboratory

Hane, Koji*; Onoe, Hironori*; Ishibashi, Masayuki*; Tabei, Kazuto*; Namikawa, Tadashi*; Tagawa, Yoichi*; Saegusa, Hiromitsu*; Ishida, Keisuke*; Fujisaki, Kiyoshi*; Sawada, Atsushi

no journal, , 

no abstracts in English

Oral presentation

Fracture conditioning examination of DFN model by in-situ investigation data, 1

Esaki, Taichi*; Ishibashi, Masayuki*; Tagawa, Yoichi*; Namikawa, Tadashi*; Hane, Koji*; Masumoto, Kazuhiko*; Onoe, Hironori*; Saegusa, Hiromitsu*; Ishida, Keisuke*; Fujisaki, Kiyoshi*; et al.

no journal, , 

no abstracts in English

26 (Records 1-20 displayed on this page)