Abstract: A method and apparatus for testing the insulation between a conductor and ground by means of a device having two input terminals for measuring the resistance between the conductor and ground, by: connecting one terminal of the device to ground; testing the continuity of the connection established between the one terminal of the device and ground; connecting the other terminal of the device to the conductor; applying a voltage between the conductor and ground and measuring the impedance therebetween while the voltage is being applied; and after the step of testing, conductively connecting the conductor to ground for discharging any charge capacitively stored in the conductor.

Abstract: In a system for inspecting fuel assembly guide thimbles, an apparatus for handling drag gages insertable within the guide thimbles includes a spider rotatably mounted to an upright support structure and supporting drag gages in a series of angularly-displaced storage positions about the support structure, and a drive operable to rotate the spider relative to the support structure and thereby moving the gages about an endless path to dispose a selected one thereof at a retrieval-and-return station. An elongated track mounted to the support structure extends outwardly above the spider, and a trolley is movable along the track between a remote position overlying a work station containing the fuel assembly to be inspected and a position adjacent to the support structure and overlying the drag gage retrieval-and-return station.