MODIFIED CLIMAX BB5000 USED FOR COMPLEX NUCLEAR POWER PLANT REPAIR

A 492 mm diameter round flange around an oval man-way port in a nuclear reactor needed to be machined to produce an oval flange 457 mm long and 355 mm wide. The material was mild steel with possible material property degradation, and the cover could not be used for mounting other than the inside edge of the port.

A specially-modified Climax BB5000 Boring Machine was used for this complex machining operation.

The repair operation was completed, providing an oval port with an oval flange, well within the targeted time.