Passive lower drywell flooder

Details Passive lower drywell flooder Passive lower drywell flooder

1989-09-19

1992-01-14

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Core catchers

376284, G21C 900

Patent

active

050808575

ABSTRACT:
A nuclear reactor complex includes fusible plugs to prevent water from a wetwell from flowing into a drywell including the reactor vessel. In case the core overheats and molten corium falls to the drywell floor, the heat from the corium melts the fusible plugs and water floods the drywell. The water inhibits a corium-concrete reaction, minimizing pressure increase within the drywell and thus the chances of radioactive materials being released into the environment.

REFERENCES:
patent: 3607630 (1971-09-01), West et al.
patent: 3678920 (1972-07-01), Cohen et al.
patent: 4045284 (1977-08-01), Rosewell
patent: 4146429 (1979-03-01), Slagley
patent: 4442065 (1984-04-01), Latter et al.
patent: 4696791 (1987-09-01), Straub

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