Abstract: A corrosion detection system includes a wire disposed in a groove extending circumferentially around an exterior surface of a pipe, the pipe comprising a pipe wall and a pipe liner that lines an inside surface of the pipe wall. The corrosion detection system also includes a sensor electrically coupled to the wire. The sensor is configured to generate a voltage in the wire, and detect a change in a property of the wire caused by exposure of the wire to a corrosive fluid that is present within the pipe but outside the pipe liner.