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http://dx.doi.org/10.5516/NET.2007.39.6.737

PERFORMANCE EVALUATION OF NEW SPACER GRID SHAPES FOR PWRS  

Song, Kee-Nam (Korea Atomic Energy Research Institute(KAERI))
Lee, Soo-Bum (Korea Atomic Energy Research Institute(KAERI))
Lee, Sang-Hoon (Korea Atomic Energy Research Institute(KAERI))
Publication Information
Nuclear Engineering and Technology / v.39, no.6, 2007 , pp. 737-746 More about this Journal
Abstract
A spacer grid, which is one of the most important structural components in a PWR fuel assembly, supports its fuel rods laterally and vertically. Based on in-house design experience, scrutiny of the design features of advanced nuclear fuels and the patents of other spacer grids, KAERI has devised its own spacer grid shapes and acquired patents. In this study, a performance evaluation of KAERI's spacer grid shapes was carried out from mechanical/structural and thermohydraulic view points. A comparative performance evaluation of commercial spacer grid shapes was also carried out. The comparisons addressed the spring characteristics, fuel rod vibration characteristics, fretting wear resistance, impact strength characteristics, CHF enhancement, and the pressure drop level of the spacer grid shapes. The results show that the performances of KAERI's spacer grid shapes are as good as or better than those of the commercial spacer grid shapes.
Keywords
Contoured Spring; Fuel Rod Fretting Wear; Impact Strength; Mixing Vane; CHF Enhancement; Spacer Grid; Fuel Assembly;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
연도 인용수 순위
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