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JAEA Reports

Application of Cherenkov light observation to reactor measurements, 3; Evaluation of spent fuel elements of LWRs with Cherenkov light estimation system

Yamamoto, Keiichi; Takeuchi, Tomoaki; Hayashi, Takayasu*; Kosuge, Fumiaki*; Tsuchiya, Kunihiko

JAEA-Testing 2016-002, 25 Pages, 2016/11

JAEA-Testing-2016-002.pdf:4.97MB

Development of the reactor measurement system has been carried out to obtain the real-time in-core nuclear and thermal information, where the quantitative measurement of brightness of Cherenkov light was investigated. The system would be applied as a monitoring system in severe accidents and for the advanced operation management technology in existing LWRs. This report summarized the modification of Cherenkov light estimation system described JAEA-Testing 2015-001 and the result of the burn-up evaluation by Cherenkov light image emitted from spent fuel elements of LWRs with the modified system.

JAEA Reports

Application of Cherenkov light observation to reactor measurements, 2; Design and trial fabrication of Cherenkov light estimation system

Yamamoto, Keiichi; Takeuchi, Tomoaki; Hayashi, Takayasu*; Kosuge, Fumiaki*; Sano, Tadafumi*; Tsuchiya, Kunihiko

JAEA-Testing 2015-001, 25 Pages, 2015/11

JAEA-Testing-2015-001.pdf:3.52MB

Development of the reactor measurement system was started to obtain the real-time in-core nuclear and thermal information, where the quantitative measurement of brightness of Cherenkov light was investigated. This report was summarized the results of design and trial fabrication of the Cherenkov light estimation system from thermal power evaluation from Cherenkov light image emitted from the fuel elements. The developed Cherenkov light estimation system was verified with the Cherenkov light image emitted from the fuels in the core of Kyoto University Research Reactor (KUR). From the results, it is necessary to improve the observation method of Cherenkov light in the reactor and the evaluation method of the brightness of Cherenkov light. In future, the system will be applied for the evaluation of burn-up of spent fuels from the Cherenkov light emitted from the spent fuel assemblies in LWRs.

JAEA Reports

Application of Cherenkov light observation to reactor measurements, 1; Estimation of reactor power from Cherenkov light intensity

Yamamoto, Keiichi; Takeuchi, Tomoaki; Sano, Tadafumi*; Homma, Ryohei*; Kimura, Nobuaki; Otsuka, Noriaki; Kosuge, Fumiaki*; Nakajima, Ken*; Tsuchiya, Kunihiko

JAEA-Technology 2014-028, 56 Pages, 2015/01

JAEA-Technology-2014-028.pdf:9.23MB

Development of the reactor measurement system was started to obtain real-time in-core nuclear and thermal information, where the quantity measurement of brightness of Cherenkov light was applied. The system would be applied as monitoring system in severe accidents and for advanced operation management technology in existing LWRs. In this report, the calculation and the observation results were summarized about the quantity of the Cherenkov light caused by the $$gamma$$ and $$beta$$ ray emitted from the fuels in the core of Kyoto University Research Reactor.

Oral presentation

Development of the restoration support system for environment, 3; Verification of the system

Motohashi, Jun; Terauchi, Makoto; Yamashita, Takuya; Tagawa, Akihiro; Ishikawa, Satoshi*; Yamaguchi, Katsuyoshi*; Kosuge, Fumiaki*; Kinoshita, Naoki*; Homma, Ryohei*

no journal, , 

no abstracts in English

Oral presentation

Development of the restoration support system for environment, 1; Outline of the system

Yamashita, Takuya; Terauchi, Makoto; Motohashi, Jun; Tagawa, Akihiro; Ishikawa, Satoshi*; Yamaguchi, Katsuyoshi*; Kosuge, Fumiaki*; Kinoshita, Naoki*; Homma, Ryohei*

no journal, , 

The Restoration Support System for Environment "RESET" was developed to estimate the dose rate of post-decontamination and assist planning of the future decontamination by using a cloud computer installed on the Internet. This paper describes the outline of development of the system.

Oral presentation

Development of the restoration support system for environment, 2; Design of the system

Yamashita, Takuya; Tagawa, Akihiro; Terauchi, Makoto; Motohashi, Jun; Homma, Ryohei*; Ishikawa, Satoshi*; Yamaguchi, Katsuyoshi*; Kosuge, Fumiaki*; Kinoshita, Naoki*

no journal, , 

In order to support decontamination activities, the system which evaluates the reduction effect of the environmental dose rate before and after the decontamination for a wade area was developed.

Oral presentation

Research and development of high-performance monitoring systems for safety measures of LWRs, 4; Evaluation of Cherenkov light emitted from fuel elements

Yamamoto, Keiichi; Takeuchi, Tomoaki; Otsuka, Noriaki; Tsuchiya, Kunihiko; Sano, Tadafumi*; Nakajima, Ken*; Hayashi, Takayasu*; Kosuge, Fumiaki*

no journal, , 

no abstracts in English

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