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JAEA Reports

Measurement of the iodine species in nitric acid solution under the irradiation of $$gamma$$-ray

Okagawa, Seigo; Nagai, Hitoshi*; Abe, Hitoshi*; Tashiro, Shinsuke

JAERI-Tech 2003-068, 17 Pages, 2003/08

JAERI-Tech-2003-068.pdf:0.78MB

To study the release mechanism of iodine from the dissolver solution in the nuclear fuel reprocessing plants to the atmosphere at criticality accidents, the characteristics of redox of iodine species in various solutions must be examined. In the present work, the effect of $$gamma$$-ray irradiation on the redox reaction was examined in the nitric acid solution of 1M and 3M. Without irradiation, most of iodine in 1M nitric acid solutions were exist in the form of I$$_{3}$$$$^{-}$$. In 3M nitric acid solutions, iodine was oxidized to I$$_{2}$$. When the solutions were irradiated by $$gamma$$-ray with exposure of more than 4C/kg, I$$_{3}$$$$^{-}$$ was disappeared regardless of nitric acid concentration. At exposure of 120C/kg, iodine was oxidized to IO$$_{3}$$$$^{-}$$. At exposure of 4800C/kg, iodine was exist in the form of IO$$_{3}$$$$^{-}$$ in 1M nitric acid solution. On the other hand, iodine in 3M nitric acid solution was reduced to I$$_{2}$$ at the same exposure. In the irradiated solution, nitrous acid was found, which would be produced from nitric acid by $$gamma$$-ray irradiation.

Journal Articles

Source term on release behavior of radioactive materials from fuel solution under simulated nuclear criticality accident

Abe, Hitoshi; Tashiro, Shinsuke; Koike, Tadao; Okagawa, Seigo; Uchiyama, Gunzo

Proceedings of the 2001 Topical Meeting on Practical Implementation of Nuclear Criticality Safety (CD-ROM), 8 Pages, 2001/11

no abstracts in English

JAEA Reports

Studies on release behavior of radioactive noble gases from fuel solution to gas phase under simulated nuclear criticality accident (Contract research)

Abe, Hitoshi; Tashiro, Shinsuke; Koike, Tadao; Okagawa, Seigo; Uchiyama, Gunzo

JAERI-Research 2001-027, 20 Pages, 2001/03

JAERI-Research-2001-027.pdf:1.0MB

no abstracts in English

JAEA Reports

Study on the release behavior of radioactive iodine spices and noble gases from the fuel solution under simulated nuclear criticality accident (Contract research)

Abe, Hitoshi; Tashiro, Shinsuke; Nagai, Hitoshi; Koike, Tadao; Okagawa, Seigo; Murata, Mikio

JAERI-Tech 99-067, p.23 - 0, 1999/09

JAERI-Tech-99-067.pdf:1.37MB

no abstracts in English

JAEA Reports

High hydrostatic pressure tests of the unsaturated polyester products

*; Dojiri, Shigeru; *; ; Okagawa, Seigo; Moriyama, Noboru

JAERI-M 88-027, 57 Pages, 1988/02

JAERI-M-88-027.pdf:5.02MB

no abstracts in English

JAEA Reports

Measurements of Fission Products Released in Primary Cooling System of OWL-1 Loop

Yamamoto, Katsumune; Yokouchi, Iichiro; Okagawa, Seigo; ;

JAERI-M 83-007, 50 Pages, 1983/03

JAERI-M-83-007.pdf:1.65MB

no abstracts in English

JAEA Reports

Safety Assement of PIC-Container Used for Radioactive Wastes,I; Resistance to High Hydraulic Pressure and Resistance to Leaching of Radio Isotopes for PIC-Container

*; Okagawa, Seigo; ; ; *; *; *; Wadachi, Yoshiki; Araki, Kunio;

JAERI-M 9380, 59 Pages, 1981/03

JAERI-M-9380.pdf:1.96MB

no abstracts in English

Journal Articles

Behavior of iodine-131 during rinsing in-pile loop with demineralized water after fission product release experiment

Yamamoto, Katsumune; ; Okagawa, Seigo; Yokouchi, Iichiro;

Journal of Nuclear Science and Technology, 17(1), p.67 - 76, 1980/00

https://doi.org/10.3327/jnst.17.67
 Times Cited Count：1 Percentile：22.79(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

A Study on Analytical Methods of Radioiodine in a High-temperature,High-pressure Water In-pile Loop

Yamamoto, Katsumune; Okagawa, Seigo; Yokouchi, Iichiro; ;

JAERI-M 7801, 15 Pages, 1978/08

JAERI-M-7801.pdf:0.54MB

no abstracts in English

JAEA Reports

Fission Product Iodine Carry-over from Experimental Apparatus

; Okagawa, Seigo

JAERI-M 7093, 10 Pages, 1977/05

JAERI-M-7093.pdf:0.51MB

no abstracts in English

JAEA Reports

Chemical Properties of JMTR Primary Coolant

; Yamamoto, Katsumune; Okagawa, Seigo; Yokouchi, Iichiro; Atomura, Masakatsu*

JAERI 1213, 30 Pages, 1972/02

JAERI-1213.pdf:1.29MB

no abstracts in English

JAEA Reports

Revised Chemical Analysis Procedures for JMTR

; Yamamoto, Katsumune; Okagawa, Seigo; Yokouchi, Iichiro; Atomura, Masakatsu*

JAERI-M 4594, 211 Pages, 1971/09

JAERI-M-4594.pdf:11.53MB

no abstracts in English

JAEA Reports

Primary Cooling Water Decomposition in Reactor

Tone, Hirohito; Yamamoto, Katsumune; Okagawa, Seigo; Yokouchi, Iichiro; Atomura, Masakatsu*

JAERI 1204, 11 Pages, 1971/03

JAERI-1204.pdf:0.75MB

no abstracts in English

13 (Records 1-13 displayed on this page)
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