Emergency core cooling system having core barrel injection...

Details Emergency core cooling system having core barrel injection... Emergency core cooling system having core barrel injection...

2011-07-19

2011-07-19

Palabrica, Rick (Department: 3663)

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Orifice or fluid control at inlet or outlet of coolant channels

C376S282000, C376S395000

Reexamination Certificate

active

07983377

ABSTRACT:
An emergency core cooling system directly injects emergency core cooling water, which is supplied from a high-pressure safety injection pump or a safety injection tank for a pressurized light water reactor, into a reactor vessel downcomer. A pipe connector is completely removed from between each direct vessel injection nozzle and each injection extension duct installed on an outer surface of the core barrel, which are opposite to each other. An emergency core cooling water intake port, through which the water is injected from each direct vessel injection nozzle, is formed on the surface of each injection extension duct facing an axis of each direct vessel injection nozzle. Thereby, a structure in which a jet of the emergency core cooling water flows into the injection extension ducts is adopted in a hydraulic connection fashion.

REFERENCES:
patent: 5135708 (1992-08-01), Carlton et al.
patent: 5377242 (1994-12-01), Carlton et al.
patent: 2008/0279326 (2008-11-01), Gilmore et al.
patent: 10-2000-0074521 (2000-12-01), None
patent: 20000074521 (2000-12-01), None
patent: 10-2003-0064634 (2003-08-01), None
Kwon, T.S. et al “Effect of the yaw injection angle on the ECC bypass in comparison with the horizontal DVI.” Nuclear Engineering and Design 225 (2003) pp. 295-304.

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