Patent ID: 7724863

Claim:
A core spray sparger T-box attachment assembly for a nuclear reactor pressure vessel, the pressure vessel including a shroud, a sparger T-box penetrating the shroud, a plurality of sparger distribution header pipes coupled to the sparger T-box, and a downcomer pipe, the sparger distribution header pipes including at least one sparger nozzle, the sparger T-box attachment assembly comprising: a downcomer pipe coupling; and a sparger T-box clamp; wherein the downcomer pipe coupling includes a draw bolt, wherein the sparger T-box clamp includes: an anchor plate including side ends; a seal plate; a first clamp block substantially aligned at a first of the side ends; a second clamp block substantially aligned at a second of the side ends; a plurality of first bolts; a plurality of second bolts; and a plurality of third bolts; wherein the anchor plate further includes a first draw bolt opening configured to receive the draw bolt, wherein the seal elate includes a second draw bolt opening configured to receive the draw bolt, wherein the seal plate further includes a plurality of bolt openings configured to receive the third bolts, wherein the seal plate is coupled to the anchor plate with the plurality of third bolts, wherein the first clamp block is configured to be fixed to a first sparger distribution header pipe by the plurality of first bolts acting between the first clamp block and the first sparger distribution header pipe, and wherein the second clamp block is configured to be fixed to a second sparger distribution header pipe by the plurality of second bolts acting between the second clamp block and the second sparger distribution header pipe.