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A series of feasibility studies which werc conducted to determine the capabilities and limitatnnons of several nondestructive testing methods as applnned to the Core B fuel element of the Enrico Fermi Fast Breeder Reactor are discussed. An eddy-current technique is demonstrated to be capable of measuring the fuel plate-clad thickness wtth an accuracy of plus or minus 0.001 in. Discussion is presented of a through-transmission ultrasonic technique which is capable of detecting core-clad interface nonbonds which are nn/6 in. in diameter or larger. A radiographic technnnque is described which can be used to detect UO/ concentration inhomogeneities in excess of the specified plus or minus 5% tolerance. Description is made also of an eddy-current system which will measure coolant channel spacing between fuel plates with an accuracy of 0.0005 in. Details of each of the test systems are presented. (auth)

FEASIBILITY STUDIES--NONDESTRUCTIVE TESTING OF THE ENRICO FERMI REACTOR CORE B FUEL ELEMENT