Eddy Current Testing Apparatus And Related Methods

Abstract: An eddy current testing apparatus and related methods for conducting non-destructive examination of heat exchanger tubes accessible via a heat exchanger tubesheet. The apparatus comprises a motor-driven drive pulley and one or more idler pulleys engageable with the test cable of the test probe to feed out or retract the cable and test head which are insertable into the heat exchanger tube under test. A support bracket of the apparatus includes manually-expandable tube clamps operated by an actuating lever. The clamps include a tubular securement sleeve with expandable portion for insertion into and releasably locking to an anchoring tube in tubesheet. This supports the apparatus from the tubesheet in a cantilevered manner. The idler pulley(s) may be mounted to a pivot arm movable between an inward position to press the cable into engagement with the drive pulley, and an outward position which releases the cable to facilitate setup or takedown.

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