The LIXI Profiler scans through jacketing and insulation on in-service piping to provide a complete data set with real-time information.
Corrosion Under Insulation (CUI) is the most prevalent form of pipe degradation. CUI in the refrigeration industry usually occurs on the top and bottom of horizontal piping. Because refrigeration piping usually operates at temperatures below ambient, water vapor will condense on the external surface of carbon steel piping wherever there is a breach in the vapor retarder of the insulation.
Once water is in contact with the carbon steel, external corrosion will continue to progress until arrested. Any water that has entered the insulation will either freeze on the pipe if it is operating at or below 32F, or it will remain a liquid that may travel considerable distances from where it was first introduced into the insulation. Ice will not corrode the surface of the carbon steel piping, but liquid water will seek the lowest and/or coldest point in the piping system and remain a constant threat to the integrity of refrigeration piping.
Most refrigerants, including anhydrous ammonia, are not detrimental to the internal surface of carbon steel piping and vessels, so internal damage mechanisms are rare at best in this industry.
The following are damage mechanisms and system components that are detected and measured by the LIXI Profiler for companies that use refrigeration process piping:
Your inspection report, which is used for follow up maintenance and to satisfy operational and regulatory requirements, includes visual, quantitative and qualitative data of each individual scanned location.