Coolant supply studs at a nuclear reactor pressure vessel.

摘要

A nuclear reactor pressure vessel nozzle penetration device for fluid coolant delivery to the reactor core or to modular heat exchangers located within the vessel is described. The nozzle penetration device comprises a nozzle conduit having an annular double wall open at one end with thermal insulation therebetween, having the outer wall end attached to a portion of the reactor pressure vessel and disposed radially therefrom forming an air space therebetween.