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Journal Articles

Application of the small OSL elements to the ring type dosemeter

Miyauchi, Hideaki; Yoshitomi, Hiroshi; Sato, Yoshitaka; Takahashi, Fumiaki; Tachibana, Haruo; Kobayashi, Ikuo*; Suzuki, Akifumi*

Nihon Hoshasen Anzen Kanri Gakkai-Shi, 12(1), p.41 - 45, 2013/07

In the Japan Atomic Energy Agency (JAEA), exposures to fingertips can be significant in radiological decontamination at the facilities with mixture fields of beta and $$gamma$$ (X) rays. The radiation doses to fingertips have been measured by ring type dosemeters equipped with thermoluminescence dosemeters (TLD) in JAEA. We applied small Optically Stimulated Luminescence (OSL) elements to the ring type dosemeter, which has the advantages in the use for long term and repeating in dose measurements comparing to the TLDs. In this report, we introduce the outline and the dose evaluation method of the new ring type dosimeter which we applied.

JAEA Reports

Development of ring type dosemeter using OSL elements

Miyauchi, Hideaki; Yoshitomi, Hiroshi; Sato, Yoshitaka; Tachibana, Haruo; Takahashi, Fumiaki

JAEA-Technology 2010-050, 17 Pages, 2011/03

JAEA-Technology-2010-050.pdf:1.53MB

Regulations on nuclear power state requirements for measurements of personal dose equivalent at the depth of 70 micrometers for exposures, where the maximum dose can be appeared at body parts except the torso. The hands doses have been measured with Thermal Luminescence Dosemeters in the Nuclear Science Research Institute (NSRI) in the Japan Atomic Energy Agency. In this study, we developed a new ring type dosemeter using the optically stimulated luminescence elements. We have inspected the characteristic by irradiation examinations and a Monte Carlo simulation and established dose evaluation method.

Journal Articles

Performance of the H$$_{p}$$(10) and H$$_{p}$$(0.07) measurable electronic pocket dosimeter for $$gamma$$- and $$beta$$-rays

Takahashi, Masa; Sekiguchi, Masato; Miyauchi, Hideaki; Tachibana, Haruo; Yoshizawa, Michio; Kato, Toru*; Yamaguchi, Akihito*

Journal of Nuclear Science and Technology, 45(Suppl.5), p.225 - 228, 2008/06

 Times Cited Count:5 Percentile:36.71(Nuclear Science & Technology)

Journal Articles

Statistics of individual doses of JAERI for the past 48 Years

Sekiguchi, Masato; Takahashi, Masa; Miyauchi, Hideaki; Tachibana, Haruo; Komuro, Yuji*; Nemoto, Kiyoko*; Okawa, Ikuko*; Yoshizawa, Michio

Proceedings of 2nd Asian and Oceanic Congress Radiological Protection (AOCRP-2) (CD-ROM), p.114 - 117, 2006/10

In the Japan Atomic Energy Research Institute (JAERI), which was merged with the Japan Nuclear Cycle Development Institute into the Japan Atomic Energy Agency in 2005, individual monitoring and dose record keeping for radiation workers have been conducted since 1957. This report outlines the statistics of the number of radiation workers and individual doses, such as annual collective doses, annual average doses, the maximum doses and dose distributions, over the past 48 years from 1957 to 2005. Individual doses were increased due to the augment of trouble and maintenance of new experimental facilities in 1960's. The collective doses and annual average doses in 1960's exceeded 1,200 man-mSv and 0.4mSv, respectively, in some years. Then, consecutive dose reduction efforts made the collective dose significantly decrease to less than 400 man-mSv ($$sim$$1/3 of the highest) and the average dose to $$sim$$0.04 mSv ($$sim$$1/10 of the highest). The collective doses in recent years keep almost constant even though radiation works increase in some high-contaminated hot laboratories for the decontamination and maintenance of experimental equipments. It was found from the analysis of cumulative distributions that there was a specific work-group exposed to significantly high dose compared with other workers.

JAEA Reports

Statistics of individual doses of JAERI for the past 48 years

Shiraishi, Akemi; Sekiguchi, Masato; Tachibana, Haruo; Yoshizawa, Michio; Komuro, Yuji*; Nemoto, Kiyoko*; Okawa, Ikuko*

JAEA-Data/Code 2006-014, 36 Pages, 2006/06

JAEA-Data-Code-2006-014.pdf:2.46MB

In Japan Atomic Energy Research Institute (JAERI), individual monitoring and dose data recording for radiation workers have been conducted since 1957, the next year of which JAERI was established. This report compiles the statistics of individual doses, such as average doses, collective doses, the number of radiation workers and dose distributions, over the past 48 years from 1957 to 2005, when JAERI merged with Japan Nuclear Cycle Development Institute into Japan Atomic Energy Agency. Transition of the statistics showed the history of radiation works in JAERI and many efforts for dose reduction based on the ALARA principle recommended by ICRP. In addition, it was found from the analysis of cumulative distributions that, in recent years, there was a specific work-group exposed to significantly high dose compared with other workers.

Journal Articles

Environmental radiation monitoring system

Matsuura, Kenichi; Tachibana, Haruo

Denki Hyoron, 90(7), p.43 - 46, 2005/07

no abstracts in English

JAEA Reports

Isopleths of surface air concentration and surface air kerma rate due to a radioactive cloud released from a stack, 3

Tachibana, Haruo; Kikuchi, Masamitsu; Sekita, Tsutomu; Yamaguchi, Takenori; Oeda, Mikihiro*; Kurosawa, Naohiro*

JAERI-Data/Code 2004-010, 19 Pages, 2004/06

JAERI-Data-Code-2004-010.pdf:1.92MB
JAERI-Data-Code-2004-010-appendix(CD-ROM).zip:12.12MB

This report is a revised edition of "Isopleths of Surface Air Concentration and Surface Air Absorbed Dose Rate due to a Radioactive Cloud Released from a Stack(II)"(JAERI-M 90-206) and based on the revised Nuclear Safety Guidelines reflected the ICRP1990 Recommendation. Characteristics of this report are the use of Air Karma Rate (Gy/h) unit instead of Air Absorbed Dose Rate (Gy/h) unit, and the records of isopleths of surface air concentration and surface air karma rate on CD-ROM. These recorded data on CD-ROM can be printed out on paper and/or pasted on digital map by personal computer.

JAEA Reports

Statistics of meteorological data at Tokai Research Establishment in JAERI

Sekita, Tsutomu; Tachibana, Haruo; Matsuura, Kenichi; Yamaguchi, Takenori

JAERI-Data/Code 2003-017, 106 Pages, 2003/12

JAERI-Data-Code-2003-017.pdf:5.32MB

The meteorological observation data at Tokai site were analyzed statistically based on a "Guideline of meteorological statistics for the safety analysis of nuclear power reactor" (Nuclear Safety Commission on January 28,1982; revised on March 29, 2001). This report shows the meteorological analysis of wind direction, wind velocity and atmospheric stability etc. to assess the public dose around the Tokai site caused by the released gaseous radioactivity. The statistical period of meteorological data is every 5 years from 1981 to 1995.

Journal Articles

Environmental radiation monitoring system in Tokai,JAERI

Tachibana, Haruo; Sekita, Tsutomu; Yamaguchi, Takenori

Radioisotopes, 52(8), p.383 - 388, 2003/08

The national and local governments, and the nuclear enterprises have strengthened nuclear disaster measures since the JCO criticality accident in 1999. This report shows the renewed radiation monitoring equipment and extended system for functional strengthening of the environmental radiation observation in Tokai site of JAERI.

JAEA Reports

Development of statistical analysis code for meteorological data, W-View

Tachibana, Haruo; Sekita, Tsutomu; Yamaguchi, Takenori

JAERI-Data/Code 2003-002, 46 Pages, 2003/03

JAERI-Data-Code-2003-002.pdf:4.49MB

A computer code (W-View) was developed to analyze the meteorological data statistically based on “the guideline of meteorological statistics for the safety analysis of nuclear power reactor"(Nuclear Safety Commission on January 28,1982; revised on March 29,2001), which code is used for statistical analysis of meteorological data to assess the public dose in case of normal operation and severe accident to get the license of nuclear reactor operation. This code was revised from large office computer code and developed for personal computer user to analyze the meteorological data simply and conveniently and to make the statistical data tables and figures of meteorology.

Journal Articles

Environmental radiation dose information system used by cellular phones in JAERI

Tachibana, Haruo; Yamaguchi, Takenori; Matsuoka, Shungo*; Nemoto, Shintaro*; Kurosawa, Naohiro*

Proceedings of 1st Asian and Oceanic Congress for Radiation Protection (AOCRP-1) (CD-ROM), 7 Pages, 2002/10

An environmental radiation monitoring system in Tokai establishment of JAERI is composed of 14 monitoring posts, 4 monitoring stations, 2 drainage monitors and the monitoring data observation center. These monitoring posts and stations measure the gamma dose rate, and the monitoring stations measure the radioactive air concentration too. Drainage monitors measure the radioactive concentration in drain water. We developed the environmental radiation dose information system used by cellular phone for observing the monitoring data in day and night, working day and holiday at everyplace in Japan. This information system shows us the every minute or every 10 minutes monitoring data table and data trend graph on the cellular phone display. In the emergency situation, this system helps for speedy response such as the notification to the JAERI staffs, starting the emergency environmental monitoring activities, reporting the dose rate and concentration to the national and local authorities, and establishment of the emergency response team in JAERI.

JAEA Reports

Dose evaluation for JRR-3 silicide fuel core

; Tachibana, Haruo

JAERI-Tech 97-058, 101 Pages, 1997/11

JAERI-Tech-97-058.pdf:3.25MB

no abstracts in English

Journal Articles

Characteristics of internal and external exposure to workers by job in Japan Atomic Energy research Institute

; ; Kawai, Katsuo; Tachibana, Haruo; Minami, Kentaro; Suga, Shinichi

Proc. 7th Int. Conf. IRPA, p.1444 - 1447, 1988/00

no abstracts in English

JAEA Reports

Table of committed effective dose equivalents according to the ICRP Publication30

Kawai, Katsuo; Tachibana, Haruo; ; Suga, Shinichi

JAERI-M 87-172, 82 Pages, 1987/10

JAERI-M-87-172.pdf:3.52MB

no abstracts in English

Oral presentation

Statistics of individual doses of JEARI for the past 48 years

Shiraishi, Akemi; Sekiguchi, Masato; Tachibana, Haruo; Yoshizawa, Michio; Komuro, Yuji*; Nemoto, Kiyoko*; Okawa, Ikuko*

no journal, , 

no abstracts in English

Oral presentation

Applicability of electronic pocket dosimeter in $$gamma$$-beta mixed fields

Takahashi, Masa; Sekiguchi, Masato; Tachibana, Haruo; Hoshi, Shintaro; Yoshizawa, Michio; Kato, Toru*; Yamaguchi, Akihito*

no journal, , 

no abstracts in English

Oral presentation

Operation of computerized radiation work passport system

Miyauchi, Hideaki; Sekiguchi, Masato; Takahashi, Masa; Yasuda, Takayuki; Tachibana, Haruo; Yoshizawa, Michio

no journal, , 

no abstracts in English

Oral presentation

Development of whole-body counting calibration method using voxel phantoms adjusted to ICRP reference individual

Takahashi, Masa; Kinase, Sakae; Miyauchi, Hideaki; Tachibana, Haruo; Oi, Yoshihiro; Yamaguchi, Takenori; Kramer, R.*

no journal, , 

no abstracts in English

Oral presentation

Development of the server system for Personal Dose Management

Miyauchi, Hideaki; Yoshitomi, Hiroshi; Akazaki, Tomohiko; Tachibana, Haruo; Suzuki, Takashi

no journal, , 

In the Nuclear Science Research Institute in the Japan Atomic Energy Agency (JAEA), the registration management of exposure dose data for radiation workers has been carried out using the "Personal dose Management System" that is took over from the old Japan Atomic Energy Research Institute. In accordance with the result of the discussion which of unification of a radiation control system, or rationalization in JAEA, development of the server system for Personal Dose Management was gradually advanced from 2006, all functions were ready in 2010, and the server system started formal operation in 2011. By the development of the server system, work efficiency and the accuracy of data improved, and more precise management of exposure dose was enabled.

Oral presentation

Personal monitoring for assistance staff to Fukushima

Suzuki, Takehiko; Murayama, Takashi; Miyauchi, Hideaki; Sato, Yoshitaka; Oi, Yoshihiro; Tachibana, Haruo; Yoshitomi, Hiroshi

no journal, , 

Nuclear Science Research Institute is assisting activities concerning the accident of the Fukushima No.1 Nuclear Power Station including the environmental monitoring and the resident's house decontamination, etc. In these assistance, we executing the personal monitoring to assistance staff, because there was fear of the external exposure and the internal exposure. We did by the measurement and the evaluation method of the personal monitoring in consideration of the rise of the environmental background level. We introduce the method of use to evaluate the exposed dose etc.

24 (Records 1-20 displayed on this page)