Distinctive radiation durability of an ion exchange membrane in the SPE water electrolyzer for the ITER water detritiation system

Iwai, Yasunori; Yamanishi, Toshihiko; Isobe, Kanetsugu; Nishi, Masataka; Yagi, Toshiaki; Tamada, Masao

Fusion Engineering and Design, 81(1-7), p.815 - 820, 2006/02

https://doi.org/10.1016/j.fusengdes.2005.09.036

Solid-polymer-electrolyte (SPE) water electrolysis is attractive in electrolytic process of water detritiation system (WDS) in fusion reactors because it can electrolyze liquid waste directly, but radioactive durability of its ion exchange membrane is a key point. Radioactive durability of Nafion, a typical commercial ion exchange membrane, was experimentally investigated using Co-60 irradiation facility and electron beam irradiation facility at Takasaki Radiation Chemistry Research Establishment of JAERI. Nafion is composed of PTFE (Polytetrafluoroethylene) main chain. However the degradation of its mechanical strength by irradiation was significantly distinguished from that of PTFE and no serious damage was observed for its ion exchange capacity up to 530 kGy, the requirement of ITER. Atmospheric effects such as soaking and oxygen on degrading behaviors were discussed from the viewpoint of radical reaction mechanism. Dependencies of operating temperature and radioactive source are also demonstrated in detail.

Permeation of hydrogen isotope in the HTTR hydrogen production system

Takeda, Tetsuaki; Iwatsuki, Jin*; Ogawa, Masuro

Nihon Kikai Gakkai 2000-Nendo Nenji Taikai Koen Rombunshu, 4, p.405 - 406, 2000/00

no abstracts in English

Study on tritium・hydrogen permeation in the HTTR hydrogen production system, 1; Hydrogen permeability of Hastelloy XR (Contract research)

Takeda, Tetsuaki; Iwatsuki, Jin*; Inagaki, Yoshiyuki; Ogawa, Masuro

JAERI-Tech 98-044, 34 Pages, 1998/11

JAERI-Tech-98-044.pdf:2.0MB

no abstracts in English

Development of compact tritium confinement system using gas separation membrane

Hayashi, Takumi; Okuno, Kenji

Materials for Advanced Energy Systems & Fission and Fusion Engineering '94, p.205 - 207, 1994/06

no abstracts in English

Sparation of Argon Isotopes by Porous Membrane Method(PartII); Separation Characteristics of Square Cascade at Total Reflux

; ; Saito, Keiichiro; ; Naruse, Yuji

JAERI-M 8374, 50 Pages, 1979/08

JAERI-M-8374.pdf:1.56MB

no abstracts in English

A Feasibility Study of Kr Removal Plant by Porous Membrane Method

Naruse, Yuji; ; ; ; Shimizu, Toku; Saito, Keiichiro

JAERI-M 7275, 40 Pages, 1977/09

JAERI-M-7275.pdf:1.07MB

no abstracts in English