Nuclear core and fuel assemblies

Details Nuclear core and fuel assemblies Nuclear core and fuel assemblies

1979-02-22

1981-08-25

Walsh, Donald P.

176 78, G21C 330

Patent

active

042857716

ABSTRACT:
A fast flux nuclear core of a plurality of rodded, open-lattice assemblies having a rod pattern rotated relative to a rod support structure pattern. Elongated fuel rods are oriented on a triangular array and laterally supported by grid structures positioned along the length of the assembly. Initial inter-assembly contact is through strongbacks at the corners of the support pattern and peripheral fuel rods between adjacent assemblies are nested so as to maintain a triangular pitch across a clearance gap between the other portions of adjacent assemblies. The rod pattern is rotated relative to the strongback support pattern by an angle .alpha. equal to sin .sup.-1 (p/2c), where p is the intra-assembly rod pitch and c is the center-to-center spacing among adjacent assemblies.

REFERENCES:
patent: 3261758 (1966-07-01), Maldaque
patent: 3267000 (1966-08-01), Ashcroft
patent: 3567582 (1971-03-01), Dievoet
patent: 3713971 (1973-01-01), Santen
patent: 4181571 (1980-01-01), Jolly

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