Double-cylinder selector valve for detecting and locating failed

Details Double-cylinder selector valve for detecting and locating failed Double-cylinder selector valve for detecting and locating failed

1983-10-06

1986-04-08

Cangialosi, Salvatore

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Leak detection

376245, G21C 1700

Patent

active

045811989

ABSTRACT:
A double-cylinder selector valve for detecting and locating failed nuclear fuel assemblies including a fixed outer cylinder provided on the circumferential wall surface thereof with a plurality of outer sampling holes arranged in a grid in both the longitudinal and circumferential directions, and a movable inner cylinder disposed rotatably within the fixed outer cylinder and provided on the circumferential wall surface thereof with a plurality of inner sampling holes. Each of coolant sampling pipes extending from the coolant outlets of each of a plurality of nuclear fuel assemblies is connected to one of the outer sampling holes. The inner sampling holes communicate with some of the plurality of outer sampling holes in the fixed outer cylinder at one position of the movable inner cylinder and with others of the outer sampling holes at other positions of the movable inner cylinder. During one complete rotation of the movable inner cylinder, each of the outer sampling holes can communicate at least once with any of the inner sampling holes.

REFERENCES:
patent: 4207922 (1980-06-01), Andrieux et al.
patent: 4332639 (1982-06-01), Crosgrove et al.
K. W. Cunningham, G. V. Hough and D. Aliaga-Kelly, "The Detection of Burst Fuel Elements in Nuclear Reactors", pp. 478-485-Genfer, Berichte, 7, 1958.

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