Development of fabrication technology for oxidation-resistant fuel elements for high-temperature gas-cooled reactors

Aihara, Jun; Honda, Masaki*; Ueta, Shohei; Ogawa, Hiroaki; Ohira, Koichi*; Tachibana, Yukio

Nihon Genshiryoku Gakkai Wabun Rombunshi, 18(1), p.29 - 36, 2019/03

https://doi.org/10.3327/taesj.J17.027

Japan Atomic Energy Agency carried out development of fabrication technology of oxidation resistant fuel element for improvement of safety of high temperature gas-cooled reactors in serious oxidation accident, based on precursor research in former JAEA. Dummy coated fuel particles (alumina particles) were over-coated with mixed powder of Si, C and small amount of resin to form over-coated particles, and over-coated particles were molded and hot-pressed to sinter dummy oxidation resistant fuel elements with SiC/C mixed matrix. We fabricated dummy oxidation resistant fuel elements with matrix whose Si/C mole ratio (about 0.551) is three times as large as that in precursor research. Si peak was not detected by X-ray diffraction of matrix. Better oxidation resistant was confirmed with oxidation test in 20% O at 1673 K than that of ordinal fuel compact with ordinal graphite/carbon matrix. All dummy coated fuel particles were held in specimen after 10 h oxidation.

Experimental Determination of Thermal Conductivity and Gap Conductance of Fuel Rod for HTGR

; Iwamoto, K.; Ikawa, Katsuichi;

JAERI-M 84-236, 51 Pages, 1985/01

JAERI-M-84-236.pdf:1.84MB

no abstracts in English

Irradiation Experiments of Coated Particle fuel in JRR-2,VT-1 Hole

; Ikawa, Katsuichi; ;

JAERI-M 83-092, 84 Pages, 1983/07

JAERI-M-83-092.pdf:9.89MB

no abstracts in English

Postirradiation Examination of VIF-11H Capsule

; Ikawa, Katsuichi

JAERI-M 82-085, 41 Pages, 1982/07

JAERI-M-82-085.pdf:4.7MB

no abstracts in English

Thermal Conductivity of Fuel Compacts and Thermal Gap Conductance between Fuel Compact and Graphite Sleeve for HTGR

; Iwamoto, K.; Ikawa, Katsuichi

JAERI-M 9287, 22 Pages, 1981/02

JAERI-M-9287.pdf:1.14MB

no abstracts in English

Hot Chlorine Leaching Techniques for Determination of Failed Particle Franctions in HTGR Fuel Compacts

; Ikawa, Katsuichi; Iwamoto, K.

JAERI-M 8072, 11 Pages, 1979/02

JAERI-M-8072.pdf:0.55MB

no abstracts in English

Development of VHTR-Fuel Irradiation Capsules for VT-1 Irradiation Hole of JRR-2

; ; Tobita, Tsutomu; ; ; Iwamoto, K.

JAERI-M 6913, 40 Pages, 1977/02

JAERI-M-6913.pdf:1.22MB

no abstracts in English

Determination of matrix density of HTGR fuel compact by X-ray radiography

; Iwamoto, K.

Radioisotopes, 23(12), p.717 - 719, 1974/12

https://doi.org/10.3769/radioisotopes.23.12_717

no abstracts in English

Present status of the research on HTGR fuel

Iwamoto, K.

Nenryo Kyokai-Shi, 53(564), p.223 - 232, 1974/00

https://doi.org/10.3775/jie.53.223

no abstracts in English