公开(公告)号：US3607630A

公开(公告)日：1971-09-21

申请号：US3607630D

申请日：1969-08-22

Applicant: COMBUSTION ENG

Inventor： WEST JOHN M ,  FLETCHER WILLIAM D

IPC: G21C9/00 ,  G21C9/012 ,  G21C9/016 ,  G21C15/18

CPC classification number: G21C9/00 ,  G21C9/012 ,  G21C9/016 ,  G21C15/18 ,  Y02E30/40

Abstract: A water-cooled metal basin is located under a nuclear reactor vessel to catch, cool, solidify and retain molten core material dropped from the vessel upon a burn-through of the vessel. A plurality of horizontally disposed water-filled tubes in the basin have a common inlet connected with an elevated storage tank and have discharge outlets positioned at a height at least equal to the water level in the storage tank. The basin provides a level floor on which the molten core material may spread out in a thin layer and be solidified and maintained solid by transfer of heat to water passing through the tubes. The tubes may also extend vertically above the basin to absorb heat radiated from the upper surface of the layer and radiating fins may be provided in the basin. A second material may also be provided to absorb heat from the molten reactor material by melting of the second material thereby solidifying the molten core material. Waterflow is started automatically by convention and gravity.

公开(公告)号：US3578564A

公开(公告)日：1971-05-11

申请号：US3578564D

申请日：1968-10-31

Applicant: COMBUSTION ENG

Inventor： FLETCHER WILLIAM D

IPC: G21C13/073 ,  G21C13/087 ,  G21C13/02

CPC classification number: G21C13/087 ,  G21C13/073 ,  Y02E30/40

Abstract: MEANS FOR SUSPENDEDLY MOUNTING A DOUBLE CONTAINER REACTOR VESSEL WITHIN A VESSEL CAVITY FORMED IN A FOUNDA TION STRUCTURE IN A MANNER SUCH THAT, IN THE EVENT OF FAILURE OF THE OUTER VESSEL IN ANY LOCATION, THE INNER VESSEL WILL REMAIN SECURED TO THE FOUNDATION STRUCTURE. THE MEANS COMPRISES THE PROVISION OF RADIAL FLANGES ON THE SHELLS AND CLOSURE COVERS OF THE INNER AND OUTER CONTAINER VESSELS ARRANGED SUCH THAT THE INNER VESSEL FLANGES ARE RETAINED IN SANDWICHED RELATION BETWEEN THE OPPOSING FACES OF THE OUTER VESSEL FLANGES. ANNULAR SHOULDER MEANS ARE PROVIDED ON THE FOUNDATION WALL TO VERTICALLY SUPPORT THE ASSEMBLED VESSEL STRUCTURE BY ENGAGEMENT WITH THE OUTER VESSEL SHELL FLANGE. AN ANNULAR LOCK RING RELEASABLY ATTACHED TO THE

FOUNDATION PRESENTS A BEARING FACE ADAPTED TO ENGAGE THE OUTER VESSEL CLOSURE COVER FLANGE TO PREVENT UPWARD MOVEMENT OF THE RETAINED FLANGES IN THE EVENT OF A REACTOR ACCIDENT.