Gaz De France

Gaz De France-(Gdf) Service National

Engie

Alain Darut

Dominique Gueugnaut

Michel Hardy

Jean-Michel Bideault

Irene Corral-Hernandez

Aymeric Lopitaux

Jean Le Coguic

Francis Dattolo

A method of repairing in situ a pipe or tank of thermo-fusible material, with a step for installing an electric heating element, the heating element including electrical conductors, and with a step for supplying said conductors with appropriate electric energy. The electrical conductors are supplied by a control panel set up prior to the repair and matching, for different thermo-fusible materials and different types of damage of the pipe or tank to be repaired, at least one technical characteristic of the pipe or tank, one characteristic of the electric energy to be applied and a profile of the application time of the electric energy.

Method of repairing in situ a pipe or tank of thermo-fusible material, and device for implementing this method

The invention relates to a device and a method for welding two polymer parts via fusion using a heater mat knitted from a resistive wire coated with an insulating varnish, the heater mat being given a final shape. The heater mat is resistive wire having a diameter ranging from 0.2 mm to 0.3 mm, and has approximately parallelepiped meshes, the dimensions of which range from 1.5&#xd7;3 mmto 2.5&#xd7;4.5 mm.

Device and method for welding two polymer parts via fusion

Method in which the following operations are carried out:

Method for connecting a branch pipe to a main pipeline and underground network for distributing fluid

The invention concerns an identification process that makes it possible to confer traceability to manufactured products (PROD), from data of origin (C, D) initially brought together at a source point (P_SOURCE) and including a control identification number (C) and manufacturing data (D) common to these products (PROD). The process of the invention provides for the formation of two parallel information flows, (&#x3a6;and &#x3a6;), each of which ensures a propagation of the data of origin (C, D) in time and space from the source point (P_SOURCE), and includes three tests (COMPAR, COMPAR, COMPAR) that makes it possible to verify the internal consistency and integrity of these data of origin in the form in which they are propagated.

Growing community of inventors

Chatou, France

Alain Darut