- gas works: construction of PE and steel structures, interventions on cast iron and PE networks,

- on-call and gas safety,

- topographical surveys execution studies, plans of reconstruction,

- earthworks and road repairs.

Demand and works related to security, commercial extensions, construction, maintenance and adaptation of steel networks (including in the context of the tramway), renewal of cast iron networks.

Stress and work related to safety, maintenance of valves, cathodic protection, maintenance of the stations of relaxation and identification of the pipelines, commercial extensions, renewal of the networks cast iron.

Construction and adaptation of connections, commercial extensions, construction, maintenance and adaptation of steel networks (including in the context of the tramway), PE technical extension and network adaptation (including in the context of the tramway).