RESULTS

Phase I	Security in exploitation of the pipelines used for the natural gas supplying	Results Dissemination
Phase II	Approach on the base materials and welding processes used in the pipelines fabrication	Results Dissemination
Phase III	Tridimensional mathematical modelling of heat transfer at mono and multiarc welding	Results Dissemination
Phase IV	Conception of the original multiarc welding installation	Results Dissemination Research report summary
Phase V	Completion of Welding specification procedures (WPS) of mono and multiarc welding technologies, with or without cold wire. Mechanical behavior of X70 mono and multiarc welded joints.	Results Dissemination Research report summary (RO)
Phase VI	Metallurgical characterisation of the mono and multiarc welded joints. The optimisation of the innovative multiarc welding technologies. of Implementation of multiarc welding technologies of pipelines. Valorisation and dissemination of results.	Results Dissemination Research report summary (RO)