Patent Number: 
Section: abstract

A core spray sparger T-box attachment assembly for a nuclear reactor pressure vessel includes a downcomer pipe coupling and a sparger T-box clamp. The downcomer pipe coupling includes a cylindrical outer housing, a center portion, and a plurality of vanes extending the outer housing to the center portion. The outer housing is coupled to a downcomer pipe and includes an extending flange. A draw bolt threadedly engages an axial bore in the center portion, and connects the downcomer pipe coupling to the sparger T-box clamp. The sparger T-box clamp includes an anchor having a draw bolt opening, and a plurality of legs extending from a face of the anchor. Clamp blocks are connected to the anchor. Stop bolts extend through stop bolt openings in the clamp blocks. Clamping elements are connected to the clamp blocks by clamp bolts. A seal plate having a draw bolt opening is coupled to the anchor with a plurality of adjusting screws.