Device for measuring thickness of vessel steel plate

摘要

The invention is objected to enable the provision of an vessel steel plate measuring device capable of measuring the thickness of vessel steel plate, even in the case of a vessel having a vessel mirror part formed by a spherical or conical curved surface such as a reactor (reaction vessel) and various kinds of obstructions at a vessel barrel. The structure of the device is characterized in that a supporting point member 20 is detachably provided from a supporting point set at the central axis of the vessel mirror part 1a of a reactor 1, and a traveling carrier 6 traveling on a steel plate of the vessel mirror part 1a and having plural ultrasonic probes 7 mounted thereon is connected to one end of a turning radius regulating member 19 rotatively provided around the supporting point member 20.