DEVICE FOR REMOTE INSPECTION OF STEAM GENERATOR TUBES

摘要

A remote inspection device (1) for the inspection of the tubesheet in-bundle region of a steam generator. The device includes a rail system (9) that is easily and quickly mounted to the end of tube at an in-bundle region of a steam generator, a carriage (10) movable on the rail system (9) for feeding at flexible, tape-like wand (3) into the tube, and a probe (11) mounted on an end of the flexible, tape-like wand (3) for performing the inspection operation. The flexible, tape-like wand (3), which is composed of a flexible metal alloy, has a non-circular center section forming a channel (12) for receiving cabling for the probe (11) and opposed flat, wings (22) on either side of the non-circular center section. Each wing (22) has a row of feed holes (20) positioned remote from the center section that provide engagement with a feed wheel (21) of the carriage.