Fuel elements for nuclear reactors and method for testing the ci

Details Fuel elements for nuclear reactors and method for testing the ci Fuel elements for nuclear reactors and method for testing the ci

1974-03-28

1978-05-30

Engle, Samuel W.

176 19R, 176 68, 176 82, 176 91SP, G21C 300

Patent

active

040922170

ABSTRACT:
A method of testing the circulation of a bulk charge of fuel elements in the core of a pebble bed type of nuclear reactor comprises increasing the electrical conductivity of a number of fuel elements and then injecting the marked elements into a bulk charge of other unmarked elements having a lower electrical conductivity at predetermined positions in the core of a nuclear reactor and a measured times. The marked fuel elements are subsequently detected electromagnetically as they are carried in the bulk charge of unmarked elements through an electromagnetic field generated by a detection and measurement station. The elements are marked by including a material having a greater electrical conductivity than the remainder of the element and this material may be coated on the surface of the elements or incorporated in the body of the elements.

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