Patent ID: 8483349

Claim:
A spacer grid for dual-cooling nuclear fuel rods using intersectional support structures, the spacer grid comprising: first grid straps and second grid straps, which are crossed and arranged in transverse and longitudinal directions at regular intervals and have a shape of a flat strip; and support structures, each of which is fitted into the first and second grid straps around a respective intersection of the first and second grid straps, the support structures being configured to support the dual-cooling nuclear fuel rods, wherein the first grid straps each include first grid slits spaced apart from each other at regular intervals at an upper portion thereof, and first fastening slits formed on opposite sides of the respective first grid slits at an upper portion of each of the first grid straps; and the second grid straps each include second grid slits spaced apart from each other at regular intervals at a lower portion thereof, and second fastening slits formed on opposite sides of the respective second grid slits at an upper portion of each of the second grid straps, wherein each support structure comprises: a prism having a quadrilateral cross section; and slits at each corner of the prism coupled with corresponding first fastening slits and second fastening slits.