Abstract: A flooring system for intercepting debris including at least a plurality of floor tiles with a perforated top surface providing on a top of the plurality of tube frames for intercepting the debris. Each plurality of floor tiles may include a plurality of tube frames in side by side relationship to form a distributed suction area for fluid entrance into tile interiors and for debris interception and capture. The tile interiors of the flooring system may also provide a distributed flow path for fluid flow to a transition plenum. The flooring system may also include a transition plenum for directing a flow path of the fluid from the tiles to a sump, wherein the pumps take suction.

Abstract: A method for applying a lateral support load to a jet pump slip joint. The method includes positioning an ovalization device around the diffuser and actuating the ovalization device to apply a predetermined load to the slip joint which creates an oval deformation of the diffuser. The force applied by the ovalization device creates a plastic strain in the diffuser wall which permits the diffuser to maintain an oval shape, and an elastic strain in the wall of the inlet mixer. The elastic deflection of the inlet mixer which is restrained from its original shape applies a lateral preload force to the diffuser at the area where the diffuser has a reduced diameter due to the oval deformation. This lateral preload force maintains a rigid contact between the inlet mixer and the diffuser collar to prevent oscillating motion and suppress FIV.

Abstract: A method for applying a lateral support load to a jet pump slip joint. The method includes positioning an ovalization device around the diffuser and actuating the ovalization device to apply a predetermined load to the slip joint which creates an oval deformation of the diffuser. The force applied by the ovalization device creates a plastic strain in the diffuser wall which permits the diffuser to maintain an oval shape, and an elastic strain in the wall of the inlet mixer. The elastic deflection of the inlet mixer which is restrained from its original shape applies a lateral preload force to the diffuser at the area where the diffuser has a reduced diameter due to the oval deformation. This lateral preload force maintains a rigid contact between the inlet mixer and the diffuser collar to prevent oscillating motion and suppress FIV.