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http://dx.doi.org/10.3795/KSME-A.2017.41.3.233

Integrity Evaluation of Control Rod Assembly for Sodium-Cooled Fast Reactor due to Drop Impact  

Lee, Hyun Seung (Korea Atomic Energy Research Institute)
Yoon, Kyung Ho (Korea Atomic Energy Research Institute)
Kim, Hyung Kyu (Korea Atomic Energy Research Institute)
Cheon, Jin Sik (Korea Atomic Energy Research Institute)
Lee, Chan Bock (Korea Atomic Energy Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.3, 2017 , pp. 233-239 More about this Journal
Abstract
The CA (Control Assembly) of an SFR has a CRA(Control Rod Assembly) with an inner duct and control rod. During an emergency situation, the CRA falls into the duct of the CA for a rapid shut-down. The drop time and impact velocity of the CRA are important parameters with respect to the reactivity insertion time and the structural integrity of the CRA. The objective of this study was to investigate the dynamic behavior and integrity of the CRA owing to a drop impact. The impact analysis of the CRA under normal/abnormal drop conditions was carried out using the commercial FEM code LS-DYNA. Results of the drop impact analysis demonstrated that the CRA maintained structural integrity, and could be safely inserted into the flow hole of the damper under abnormal conditions.
Keywords
Sodium-cooled Fast Reactor; Control Assembly; Control Rod Assembly; Drop Impact; Integrity Evaluation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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