Irradiation performance of sodium-bonded control rod for the fast breeder reactor

Sasaki, Shinji ; Maeda, Koji ; Furuya, Hirotaka*

The lifetime of control rods is limited by the absorber (B $_{4}$ C pellets)-cladding mechanical interaction (ACMI). Therefore, sodium (Na)-bonded control rods were developed for long-life control rods. Na-bonded control rods have been irradiated in the experimental fast breeder reactor, JOYO MK-III, and the diametrical changes of the Na-bonded absorber pins after the irradiation were measured in detail. In this paper, these detailed measurements were compared with the results obtained in helium (He)-bonded control rods with and without the shroud tube in a wide burn-up range. From the comparison, it was concluded that the Na-bonded absorber pins are very effective for achieving long-life control rods.

Language	:	English
Journal	:	Journal of Nuclear Science and Technology
Volume	:	55
Number	:	3
Pages	:	p.276 - 282
Publication Year/Month	:	2018/03
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Patent information	:
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Paper URL	:	https://doi.org/10.1080/00223131.2017.1394229
DOI for research data	:
Keywords	:	FBR; Post Irradiation Examination; Control Rod; ACMI
Research Facility	:	FMF(照射燃料集合体試験施設)
Press Release	:
Article of JAEA R&D Review	:	Development of a Long Life Fast Reactor Control Rod; Irradiation Behavior of a Sodium-Bonded Absorber Pin[/]
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Registration No. : AA20170458
JAEA Abstracts No. : 46000131
Paper Submission No. : 19760

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