Apparatus for controlling molten core debris

Details Apparatus for controlling molten core debris Apparatus for controlling molten core debris

1975-04-09

1977-07-19

Engle, Samuel W.

176 40, 176 87, G21C 900

Patent

active

040366880

ABSTRACT:
Apparatus for containing, cooling, diluting, dispersing and maintaining subcritical the molten core debris assumed to melt through the bottom of a nuclear reactor pressure vessel in the unlikely event of a core meltdown. The apparatus is basically a sacrificial bed system which includes an inverted conical funnel, a core debris receptacle including a spherical dome, a spherically layered bed of primarily magnesia bricks, a cooling system of zig-zag piping in graphite blocks about and below the bed and a cylindrical liner surrounding the graphite blocks including a steel shell surrounded by firebrick. Tantalum absorber rods are used in the receptacle and bed.

REFERENCES:
patent: 3314859 (1967-04-01), Anthony
patent: 3607630 (1971-09-01), West et al.
patent: 3629064 (1971-12-01), Zivi
patent: 3664923 (1972-05-01), Connolly
patent: 3702802 (1972-11-01), Jansen, Jr.
patent: 3719556 (1973-03-01), Snyder, Jr. et al.
Transactions ANS vol. 13, No. 1, 6/26/70; "Fast Reactor Fuel . . . Melt Down"; Jansen et al.; p. 376.

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