Ultrasonic tester for main coolant pipe of nuclear reactor - with annular frame fitted over pipe and having track for carriage (NL 12.9.77)

摘要

Ultrasonic tester comprises an annular frame which is fitted over the pipe and which has a peripheral track for a carriage bearing an ultrasonic tester head which can be adjusted axially to different peripheral paths. The frame includes =1 hinged arcuate member of which the circumferential length is such that the opened frame can be placed over the pipe transversely to the pipe. The arcuate member is provided with means for rigid coupling to the remainder of the frame in its inwardly pivoted position. The tester can thus be assembled and dismounted in a few moves, and mounted securely in a central position.