Patent Number: 046997539
Section: abstract

The responses of a nuclear reactor refueling machine to commands from a detachable control console are simulated to allow operation of the console for testing and operator training with the console removed from the machine. A simulator, which is connected to the console by the same input and output leads which normally connect the console to the refueling machine, includes a single pulse generator driven by a single three phase A-C motor to simulate movement of the refueling machine bridge, trolley and hoist. The motor drive signals generated on separate console output leads are all connected to the single simulator motor, while the brake release signals energize relays which switch the pulse signals generated by the single pulse generator to the console input leads corresponding to the selected refueling machine component drive motor. The portable simulator also contains relays which simulate engagement and disengagement of fuel assembly and control rod cluster grippers and a device for coupling portions of the refueling machine mast to the hoist. In addition, a number of circuits are provided for testing various control console functions.