About Us Since 1995 HSI has continually improved the approach to assessing the life of catalyst tubes and other reformer furnace components. With superior expertise in NDE and Materials Engineering, HSI has been deploying inspection services worldwide to a variety of industries including: Oil Refining Ammonia Methanol Syngas DRI In addition to long term issues, plants undergo upsets and unplanned outages, all of which effect the life of reformer tubes and other pressure components. In all cases, proper assessment is required to improve the lifetime use of tube assets. HSI, The only company dedicated to the assessment of Hydrogen and Syngas plants.