The Transitgas pipeline is 292 km long, and transports natural gas mostly from the Netherlands and from Norway to Italy
The Transitgas pipeline is 292 km long, and transports natural gas mostly from the Netherlands and from Norway to Italy.
The 48” pipeline crosses central Switzerland and the Alps and continues towards the south. After having crossed most of the Alps, it arrives at the Gries Massif, where it reaches Italian territory in a tunnel at an elevation of 2400 m. With its capacity of transporting, the pipeline is a key component of the European natural gas system and transports almost 15% of all the imported gas into Italy.
The pipe crosses an unstable area in Berner Oberland that would threaten the security of gas supply. In 2010 the pipeline was severely affected by mudflows, with the interruption of gas transportation. To resume and ensure the service the pipeline needed to be rerouted and monitored. Totally 36 MuST fiber optic sensors were bonded onto critical points along 500 meter of pipe crossing to assuring a continuous and automatic monitoring of the pipe along its critical sections. The pipeline cross the Aare river and the crossing is still interested from mudflow and a lot of material could be moved downstream with the pipeline. All the data coming from the various monitored sections are sent via the remote control system to be processed at the remote control center at 70 km from the site and an overview on the state and behavior of the pipeline can be viewed on different screens. The software is able to trigger alerts (SMS, mail or phone call) and show warnings on the display when strain and tension parameters in the pipe are exceeding the preset alarm thresholds. As such, the pipeline is controlled and the pipeline operator can monitor its integrity thanks to reliable information on the actual behavior of the pipe and so take supported decisions and prevent costly pipeline shutdowns.
Aim of monitoring:
Pipeline strain monitoring to assure a continuous and automatic monitoring of the pipe along its critical sections. The pipeline cross the Aare river and the crossing is interested from mudflow and a lot of material could be moved downstream with the pipeline.
TYPE OF SENSORS
NUMBER OF SENSORS
Long-Range Pipeline Monitoring By Distributed Fiber Optic Sensing, D. Inaudi, B. Glisic, 6th International Pipeline Conference September 25 – 29, 2006, Calgary, Alberta, Canada – 2006
Distributed Fibre Optic Sensing for Long-Range Pipeline Monitoring, Daniele Inaudi, Branko Glisic, The 3rd International Conference on Structural Health Monitoring of Intelligent Infrastructure – SHMII-3, November 13-16 – (on conference CD) – 2007
48” steel pipe
FBG sensor with tape protection