公开(公告)号：WO2008118510A3

公开(公告)日：2008-12-24

申请号：PCT/US2008051266

申请日：2008-01-17

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： KEEGAN PATRICK C ,  SCOBEL JAMES H ,  WRIGHT RICHARD F

IPC: G21C11/00

CPC classification number: G21C11/08 ,  G21C15/18 ,  G21Y2002/201 ,  G21Y2002/207 ,  G21Y2004/30 ,  Y02E30/40

Abstract: The reactor vessel of a nuclear reactor installation which is suspended from the cold leg nozzles in a reactor cavity is provided with a lower thermal insulating barrier spaced from the reactor vessel that has a hemispherical lower section that increases in volume from the center line of the reactor to the outer extent of the diameter of the thermal insulating barrier and smoothly transitions up the side walls of the vessel. The space between the thermal insulating barrier and the reactor vessel forms a chamber which can be flooded with cooling water through passive valving to directly cool the reactor vessel in the event of a severe accident. The passive inlet valve for the cooling water includes a buoyant door that is normally maintained sealed under its own weight and floats open when the cavity is flooded. Passively opening steam vents are also provided.

Abstract translation: 从反应器腔体中的冷腿喷嘴悬挂的核反应堆装置的反应堆容器设置有与反应堆容器间隔开的下隔热屏障，该下隔热屏障具有从反应堆的中心线体积增加的半球形下部 到隔热屏障直径的外部范围并平稳地过渡容器的侧壁。 隔热屏障与反应堆容器之间的空间形成了一个腔室，在发生严重事故时，该腔室可以通过被动阀门充满冷却水以直接冷却反应堆容器。 用于冷却水的被动入口阀包括浮力门，其通常在其自重下保持密封并且在腔被淹没时浮动。 被动打开蒸汽通风口也被提供。