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JAEA Reports

Cause investigation and repair of breakage of catalyst dust filter on mock-up model test facility with a full-scale reaction tube for HTTR hydrogen production system (Contract research)

Morisaki, Norihiro; Hayashi, Koji; Inagaki, Yoshiyuki; Kato, Michio; Fujisaki, Katsuo*; Maeda, Yukimasa; Mizuno, Sadao*

JAERI-Tech 2005-009, 37 Pages, 2005/03

JAERI-Tech-2005-009.pdf:14.33MB

The breakage of the catalyst dust filter was found at the nozzle flange, which was welded onto the end plate of the filter, by the bubbling test using nitrogen gas of the mock-up model test facility. We investigated the cause of breakage and devised a repairing method. The cause of the breakage was the stress corrosion cracking (SCC) generated from the inside of the filter. The filter was repaired based on the following countermeasures such as reduction of condensed water in the filter, tensile stress and sensitization at welding joints. Furthermore, the inspection was carried out to investigate the structural integrity of the welding joints in the test facility of which structure, material and operating condition were similar to the filter. As the results, it was confirmed that the structural integrity was maintained.

JAEA Reports

Inhibition of sensitization in reactor pipe materials by grain boundary structure control, JAERI's nuclear research promotion program, H11-023 (Contract research)

Kokawa, Hiroyuki*; Shimada, Masayuki*; Wang, Z.*; Sato, Yutaka*; Sato, Yoshihiro*; Kiuchi, Kiyoshi

JAERI-Tech 2003-014, 22 Pages, 2003/03

JAERI-Tech-2003-014.pdf:1.68MB

no abstracts in English

JAEA Reports

Journal Articles

Corrosion mechanisms of structural materials in high oxidizing solutions on nuclear environments and new alloy design for countermeasure

Kiuchi, Kiyoshi; *; *;

Proc. of the Int. Symp. on Material Chemistry in Nuclear Environment, p.65 - 78, 1992/00

no abstracts in English

Journal Articles

Advanced structural materials developed for the first wall

; Kiuchi, Kiyoshi; Hishinuma, Akimichi

Fusion Technology 1990, p.443 - 447, 1991/00

no abstracts in English

Journal Articles

A New type of low temperature sensitization of austenitic stainless steels enhanced with defect-solute interactions

Kiuchi, Kiyoshi; ; Kondo, Tatsuo

Journal of Nuclear Materials, 179-181, p.481 - 484, 1991/00

 Times Cited Count:2 Percentile:66.79

no abstracts in English

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