Nonbuilding and Special Structures
Many nuclear facilities house reinforced concrete spent fuel pools that are used to process nuclear fuel prior to its long term storage. These water pools contain fuel storage racks that sit on the pool floor. During a seismic event, the unbraced fuel storage racks undergo interaction with the surrounding fluid which results in fluid pressures on the pool walls that must be accounted for in design. This paper presents the fluid-structure interaction (FSI) effects of these submerged storage racks on pool wall fluid pressures through parametric studies which consider variations in rack size, rack mass, and seismic input. The results of these studies are used to develop a simplified approach for wall pressures that is applicable for unbraced equipment within the impulsive fluid zone. Rack sliding distances are reviewed as well. The analysis approach is verified through comparisons to theoretical results and documented experimental studies.