Method and system for emergency core cooling

Details Method and system for emergency core cooling Method and system for emergency core cooling

1993-11-15

1994-12-27

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Emergency core coolant systems

376283, 376292, G21C 1518

Patent

active

053772423

ABSTRACT:
A nuclear reactor and emergency core cooling system. A nuclear reactor is provided with a cylinder around the core barrel that defines an annular channel therebetween. An injection nozzle is provided through the reactor vessel for delivery of emergency coolant to the defined channel. Emergency coolant is supplied during a LOCA to the injection nozzles sequentially from a high pressure tank, a low pressure tank, gravity feed tanks inside the reactor building, and from sumps that collect coolant in the reactor building. Check valves in the upper portion of the cylinder vent steam to the reactor inlet lines during a LOCA. Bores around the upper circumference of the cylinder break any siphoning action that might occur at the injection nozzle if there is a break in the emergency coolant lines from the emergency coolant sources.

REFERENCES:
patent: 4061535 (1977-12-01), Nolan et al.
patent: 4071403 (1978-01-01), Andrews et al.
patent: 5000907 (1991-03-01), Chevereau et al.
patent: 5135708 (1992-08-01), Carlton et al.

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