Most heat exchangers used in thermal and nuclear power plants, as well as in the chemical industry, are shell-and-tube heat exchangers. When welding tubes to tubesheets, a high level of reliability is required, making inspection of these components essential. There are various types of welds between tubes and tubesheets. With the VX Exchanger series, Vision in X has developed several systems for the radiographic inspection of tube welds without the use of radioactive substances — tailored to the wide range of requirements involved in inspecting both internal and external tube-to-tubesheet welds. Thanks to the use of specialized X-ray tubes, all systems provide drastically improved image quality while significantly reducing operating costs and increasing productivity — all without isotopes.

The inspection of external tube-to-tubesheet welds presents a particular challenge within the field of NDT. Until now, this process was only possible using isotopes, which is both time-consuming and costly. The X-ray film required for this method represents a significant cost factor. VX Exchanger XL was specifically developed for this application and serves as the digital alternative to the conventional method using film and isotopes, offering an unparalleled increase in both productivity and image quality.
The VX Exchanger RT system provides a cost-efficient solution for inspection tasks with lower testing volume, where analog inspection and exposure on X-ray film or imaging plates are still required. A specialized X-ray tube replaces the use of isotopes and delivers a significant improvement in image quality.

All VX Exchanger systems are supplied with the powerful control and evaluation software ISee! Professional, which provides application-specific image enhancement functions and efficient image analysis tools, and is also suitable for other radiographic inspection tasks. Thanks to its manufacturer-independent support of various NDT devices, our customers enjoy maximum flexibility in choosing their equipment, whether investing in new hardware or continuing to use existing systems.
For more information about the software, please visit:

VX Exchanger RT – for the inspection of external tube-to-tubesheet welds with lower inspection volume

VX Exchanger IBW – for the inspection of internal tube-to-tubesheet welds