Fuel assembly

Details Fuel assembly Fuel assembly

1994-12-13

1996-06-18

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376370, 376210, 376221, 376361, 376443, G21C 332

Patent

active

055286410

ABSTRACT:
A fuel assembly is provided with a coolant ascending path for making coolant rise and a water rod having a coolant descending path for conducting the coolant.
A ratio of a flow area in a coolant inlet port of the smallest in coolant ascending path 13 on the downstream side than large diameter tube portion 3E to a flow area of the largest in the axial direction of coolant ascending path 13 in large diameter tube portion 3E is set to be 0.2-20%.
In the normal operation, the declination degree from the liquid level in the coolant ascending path, corresponding to the coolant flow rate of the liquid level formed in the coolant ascending path can be controlled. Further, at the time of the excess the change speed of the liquid level can also be controlled.

REFERENCES:
patent: 4997621 (1991-03-01), Johansson et al.
patent: 5023047 (1991-06-01), Nishida et al.
patent: 5192496 (1993-03-01), Soneda et al.
patent: 5202085 (1993-04-01), Aoyama et al.
patent: 5267286 (1993-11-01), Hirukawa

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