Pipeline leak detection includes hydrostatic examination after pipeline construction and leak detection during service. This article mainly refers in order to in-service leak detection. A look at the application of fibre optic technological innovation within pipeline checking. Specifically the methods fibre optic leak detection offers sizeable benefits over conventional systems are outlined. Without delving deeply into the technical aspects of fibre optic leak detection technological innovation, fibre optics operates by placing a fiber optic cable within the long distance pipeline, interspersed of repeater stations.