Improved method for passive cooling liquid metal cooled nuclear reactors, and system thereof.

摘要

A liquid metal cooled nuclear reactor (16) having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions (20,22,24) surrounding the reactor vessel (12) in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel. To improve heat transfer efficiency, surfaces of the partition are roughened, as by forming protrusions (42) cavities or grooves.