Corium shield

Details Corium shield Corium shield

1993-07-01

1994-09-13

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Core catchers

G21C 9016

Patent

active

053475569

ABSTRACT:
A shield for restricting molten corium from flowing into a water sump disposed in a floor of a containment vessel includes upper and lower walls which extend vertically upwardly and downwardly from the floor for laterally bounding the sump. The upper wall includes a plurality of laterally spaced apart flow channels extending horizontally therethrough, with each channel having a bottom disposed coextensively with the floor for channeling water therefrom into the sump. Each channel has a height and a length predeterminedly selected for allowing heat from the molten corium to dissipate through the upper and lower walls as it flows therethrough for solidifying the molten corium therein to prevent accumulation thereof in the sump.

REFERENCES:
Buchholz, (G.E. Nuclear Energy), "Corium Protection for Lower Drywell Sump", Aug. 7, 1992, Cover Letter and Attachment 7B, pp. 7B1-7B22, report to Nuclear Regulatory Commission.
Westinghouse, "Simplified Passive Advanced Light Water Reactor Plant Program, AP600 Probabilistic Risk Assessment", Jun. 26, 1992, 3 cover pages and p. 10-4, report to U.S. Department of Energy.
G.E. Nuclear Energy, "ABWR Advanced Boiling Water Reactor Standard Safety Analysis Report", cover page and pp. 19EB.2-3, 2-6, and 7.1, report to Nuclear Energy Commission in Jan. 1993.

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