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GEODETECTION OF UNDERGROUND NETWORKS

Détection de réseaux par radarBecause damaging underground networks may be a serious hazard, several prescribed rules are being established to control building works near certain underground, underwater or overhead structures (transport or distribution) in France. 

Works happening near networks are governed by legislations and norms (decree DT-DICT, Statement of works project and declaration of intent to begin works). In 2017, any company working on these projects will have to hold an accreditation to operate.

 

At the same time, a one-stop service was created to collect all the data locating underground networks under public ways and where all service providers will have to go before starting works (DT-DICT).

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These provisions entail the necessity of geodetecting and georeferencing precisely networks in France so as to carry out works safely.

Geolocation methods draw upon existing documents, visual scouting on site, GPR or radio-detection for underground structures, geometric readings. Results are then copied on digitised cartographic material (Autocad…), supplementing or modifying existing material.

INNOGEO has a division specialised in the geolocation of underground networks.

INNOGEO is a member of the FNEDRE, the French national federation of underground network detection companies.

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