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Title: Conformal core cooling and containment structure

Patent ·
OSTI ID:1496221

A nuclear reactor includes a pressure vessel and a nuclear reactor core comprising fissile material disposed inside the pressure vessel at the bottom of the pressure vessel. A secondary core containment structure includes a containment basket comprising insulation with a maximum stable temperature of at least 2200K cladded by steel. The bottom of the pressure vessel and the nuclear reactor core are disposed inside the containment basket with the containment basket spaced apart from the bottom of the pressure vessel by a clearance gap. The containment basket may comprise zirconia insulation cladded by steel. In some embodiments the clearance gap between the containment basket and the bottom of the pressure vessel is no larger than one meter. The secondary core containment structure may further comprise conduits arranged to inject water into the clearance gap between the containment basket and the bottom of the pressure vessel.

Research Organization:
BWXT mPower, Inc., Charlotte, NC (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
0000583
Assignee:
BWXT mPower, Inc. (Charlotte, NC)
Patent Number(s):
10147506
Application Number:
14/244,222
OSTI ID:
1496221
Resource Relation:
Patent File Date: 2014 Apr 03
Country of Publication:
United States
Language:
English

Cited By (19)

Nuclear reactors patent September 1976
Passive air cooling of liquid metal-cooled reactor with double vessel leak accommodation capability patent April 1995
Passive cooling and arresting device for molten core material patent-application May 2009
Corium Cooling Promoting Apparatus and Containment patent-application March 2012
Boiling water reactor nuclear power plant and its construction method patent October 2004
Boiling water reactor with compact containment and simplified safety systems patent November 1996
Reactor flooding system for a retaining molten core materials in a reactor vessel by the improved external vessel cooling capability patent October 1998
Passive cooling and arresting device for molten core material patent May 2011
Device for preventing melt-through of a reactor vessel patent June 1994
Core catcher cooling by heat pipe patent March 2002
Device for collecting and cooling reactor-meltdown products patent August 1997
Nuclear reactor vessel fuel thermal insulating barrier patent March 2013
Nuclear Reactor Incorporating Means for Preventing Molten Fuel from Breaching the Containment Vessel Thereof in the Event of a Core Melt-Down patent November 1972
Thermal insulating barrier and neutron shield providing integrated protection for a nuclear reactor vessel patent December 1997
Core catcher cooling patent July 2009
Gap structure for nuclear reactor vessel patent February 2001
Heat barrier for use in a nuclear reactor facility patent November 1988
Core catcher, manufacturing method thereof, reactor containment vessel and manufacturing method thereof patent January 2013
Nuclear Reactor Vessel Fuel Thermal Insulating Barrier patent-application August 2008

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