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Akel S.,GRTgaz Paris | Le Magueresse V.,GRTgaz Paris | Poitou M.,GRTgaz Paris | Pelle P.,GRTgaz Paris | And 4 more authors.
Clarion Evaluation, Rehabilitation, and Repair of Pipelines Conference (Berlin, 10/20-21/2010) Proceedings | Year: 2010

GRTgaz owns and operates the longest high pressure natural gas transmission network in Europe, composed of 32,000 km of steel pipelines. This work is triggered by GRTgaz's permanent search for higher safety levels regarding persons and property, higher quality regarding gas transmission and sustainable development based on the environment preservation. GRTgaz has developed recently a policy proposing operational means to carry out an objective technical and economic analysis allowing prioritization of maintenance works according to the corrosiveness of the soil and/or environment and to inform decisions about the rehabilitation or the replacement of ageing pipelines. This policy has been applied to a pipeline of approximately 100 km, located around Paris, in an urban area. The Val de Seine District played an important role in developing this policy. The present paper describes the policy and the decision making process related to pipeline replacement vs. rehabilitation with respect to technical as well as economical considerations.

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