Nuclear reactor system.

摘要

A nuclear reactor system wherein a prestressed concrete reactor vessel (23) is provided with a main cavity for the reactor core and at least one subsidiary cavity (21) for a steam generator. At least two feedwater penetrations (48) are provided in the reactor vessel communicating between the exterior of the reactor vessel and the subsidiary cylindrical cavity. A superheater penetration (52) is provided aligned with the axis of the cavity with the feedwater penetrations and the superheater penetration having mutually parallel axes. Superheater outlet means (53) are positioned in the superheater penetration and include a tubesheet (113) positioned a substantial distance from both the subsidiary cylindrical cavity and the exterior of the reactor vessel.