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Journal Articles

New laser decontamination technique for radioactively contaminated metal surfaces using acid-bearing sodium silicate gel

Kameo, Yutaka; Nakashima, Mikio; Hirabayashi, Takakuni*

Journal of Nuclear Science and Technology, 41(9), p.919 - 924, 2004/09

 Times Cited Count:10 Percentile:57.33(Nuclear Science & Technology)

A new laser decontamination method utilizing a gel made from a sodium silicate solution and an acid was developed for removing radioactive nuclide incorporated into a surface oxide layer on metal waste. Decontamination tests were carried out using both simulated contaminated samples and pipe specimens cut from the primary coolant system of the Japan Power Demonstration Reactor. In the case of surface oxide layer consisting mainly of iron oxide, more than 99% of surface radioactivities were removed after two to three decontamination runs. In order to ascertain the role of laser irradiation on chemical reactions, chemical states of O and Fe in the oxide layer before and after decontamination were analyzed by X-ray photoelectron spectroscopy. It was found that the oxide layer was dissolved into the acid-containing gel, and the reaction was extensively promoted by the laser irradiation.

Journal Articles

Chemical decontamination process with sulfuric acid-cerium(IV) for decommissioning; Decontamination of dismantled components

Suwa, Takeshi; *; *; Tachikawa, Enzo

Proc. of 1991 JAIF Int. Conf. on Water Chemistry in Nuclear Power Plants: Water Chemistry,91, p.737 - 742, 1991/00

no abstracts in English

Journal Articles

Development of chemical decontamination process with sulfuric acid-cerium(IV) for decommissioning; Demmonstration test at JPDR recirculation system

Suwa, Takeshi; *; ; ; ; Hoshi, Michio; Sagawa, Chiaki; Yonezawa, Chushiro; ; ; et al.

Nihon Genshiryoku Gakkai-Shi, 30(11), p.1020 - 1029, 1988/11

 Times Cited Count:0 Percentile:1.69(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of chemical decontamination process with sulfuric acid-cerium(IV) for decommissioning; System decontamination process with electrolytic regeneration of Ce$$^{4+}$$ from Ce$$^{3+}$$

Suwa, Takeshi; ; Tachikawa, Enzo

Journal of Nuclear Science and Technology, 25(7), p.574 - 585, 1988/07

 Times Cited Count:8 Percentile:65.47(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Dissolution behavior of nickel ferrite in sulfuric acid; Cerium(IV) solution

; ; Tachikawa, Enzo

Boshoku Gijutsu, 36(4), p.204 - 209, 1987/04

no abstracts in English

Journal Articles

Dissolution behavior of chromium-rich oxides in sulfuric acid-cerium(IV) solution

; ; Tachikawa, Enzo

Boshoku Gijutsu, 36(3), p.127 - 133, 1987/00

no abstracts in English

Journal Articles

Development of chemical decontamination process with sulfuric acid-cerium(IV)for decommissioning; Single step process to dissolve chromium-rich oxides

; ; Tachikawa, Enzo

Journal of Nuclear Science and Technology, 23(7), p.622 - 632, 1986/00

 Times Cited Count:6 Percentile:59.54(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Chemical decontamination of water reactors

Tachikawa, Enzo; ;

Nihon Genshiryoku Gakkai-Shi, 28(5), p.390 - 397, 1986/00

 Times Cited Count:0 Percentile:0.02(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Study of Chemical Decontamination of JRR-3 Primary Coolant Heavy Water System・Part2

; ; ; ; ;

JAERI-M 85-039, 26 Pages, 1985/03

JAERI-M-85-039.pdf:0.77MB

no abstracts in English

JAEA Reports

Construction and Operation of the Vapor Compression Evaporator Treatment Facility

; *; ; ; ;

JAERI-M 9910, 37 Pages, 1982/01

JAERI-M-9910.pdf:1.57MB

no abstracts in English

JAEA Reports

13 (Records 1-13 displayed on this page)
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