Described herein is an autonomous fluid spill containment device for a pipeline having a carrier conduit for transporting a fluid and a containment conduit located around the carrier conduit to define an interstitial space for receiving fluid spilled from the carrier conduit. The device comprises a spilled fluid barrier for stopping spilled fluid flow. The fluid barrier is located in the interstitial space and extending between the carrier conduit and the containment conduit. A spilled fluid sensor is located in the interstitial space to detect spilled fluid flowing in the containment conduit. A network monitor that interfaces for communicating with an operator's data collection, analysis and reporting systems. A sensor network is connected to the fluid sensor for communicating spilled fluid sensor and location data from the sensor to the network monitor so as to alert the operator to the location of the spilled fluid in real time.