Nuclear reactor fuel elements

Details Nuclear reactor fuel elements Nuclear reactor fuel elements

1981-05-26

1984-10-16

Schafer, Richard E.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Encased with nonfuel component

376425, G21C 302

Patent

active

044774117

ABSTRACT:
An array of rods is assembled to form a fuel element for a pressurized water reactor, the rods comprising zirconium alloy sheathed nuclear fuel pellets and containing helium.
The helium gas pressure is selected for each rod so that it differs substantially from the helium gas pressure in its closest neighbors. In a preferred arrangement the rods are arranged in a square lattice and the helium gas pressure alternates between a relatively high value and a relatively low value so that each rod has as its closest neighbors up to four rods containing helium gas at the other pressure value.

REFERENCES:
patent: 3105026 (1963-09-01), Dickson
patent: 3197381 (1965-07-01), Blake
patent: 3607638 (1971-09-01), Seim
patent: 3677894 (1972-07-01), Ferrari
patent: 3759243 (1973-09-01), Masetti
patent: 3813286 (1974-05-01), Goldman et al.
patent: 4069097 (1978-01-01), Frank
patent: 4106985 (1978-08-01), Melloy et al.

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