대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2004년도 추계학술발표대회 개요집
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- Pages.67-69
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- 2004
경수로 원전연료용 지지격자체의 LASER 용접부위 평가
Welding Quality Evaluation on the LASER Welding Parts of the Spacer Grid Assembly for PWR Fuel Assembly
- 발행 : 2004.11.01
초록
The fuel assemblies as the nuclear fuel for the pressurized water reactor(PWR) are loaded in the reactor core throughout the residence time of three to five years. The spacer grid assembly, which is an interconnected array of slotted grid straps and is welded at the intersections to form an egg crate structure, is one of the main structural components of the fuel assembly. The spacer grid assembly is structurally required to have enough buckling strength under various kinds of lateral load acting on the fuel assembly so as to keep the fuel assembly straight. To meet the requirement, integrity on the spacer grid welding parts should be carefully checked. In this study, welding quality of the spacer grid assembly welded by several welding companies are examined and compared.
키워드