Control rod end plug with a stabilizing configuration

摘要

The invention relates to an improved control rod for use in a nuclear reactor, and which control rod, when in use, is movable in a guide thimble having reactor coolant flowing therethrough. …??The control rod (30) has an end plug (52) with an asymmetrical tip configuration causing coolant, as it flows therepast, to impart to the end plug a lateral force (F) sufficient to hold the end plug steady against the guide thimble wall (58), thereby preventing it from vibrating against the thimble wall and causing wear.