Omega International Technology has developed an on-line real-time radiography system (ThruVUTM) using a linear array of solid state detectors to measure wall thickness of insulated and uninsulated piping system. The ThruVU system uses a low intensity Ir-192 gamma ray source and a solid state detector array mounted on a computer controlled robotic crawler. The Ir-192 gamma ray source is located on one side of the piping components and the detector array on the other side. The individual detectors of the detector array measure the intensity of the gamma rays after passing through the inside product, the walls and the insulation of the piping component under measurement. The output of the detector array is connected to a high speed laptop PC computer system on the ground through a cable. The ThruVU system collects and analyses the data from the detector array in real-time as the crawler travels over the piping system. The system measures, computes and provides the actual thickness values instantaneously. This new technique makes measurements at 2 - 4 feet per minute rate.
