Miniaturized pipe inspection system for measuring corrosion and scale in small pipes

摘要

The miniaturized pipe inspection system for measuring corrosion and scale in small pipes utilizes scattered radiation, which is measured by high efficiency solid scintillation gamma detector/spectrometer inserted inside the tube and separated from its bulky photomultiplier tube (PMT) and associated electronics by light pipe or fiber optic cable whose diameter can be very small. The light signal produced in the scintillation material is transmitted through the light pipe to outside the pipe to be inspected, where a PMT and electronic components including gamma ray energy analyzers are located. Gamma spectroscopy combined with gamma counting allows for multiple gamma ray primary and multiple backscattered radiation, thereby yielding high accuracy and high reliability of obtained corrosion, erosion and deposits data.