G-TEC Home Careers Print info@g-tec.eu ABOUT US ACTIVITIES R&D FLEET REFERENCES QHSE NEWS CONTACT HomeActivitiesOur servicesInspection & Monitoring Inspection & Monitoring Independently of the domain of application, all underwater works are generally characterised by the same difficulty, i.e. the impossibility to make observations of an ongoing job in the same way as onshore. Inspection by divers has many drawbacks. Besides many safety issues, limited diving periods, strong currents, low (or no) visibility, the underwater situation is also assessed in a subjective way. This lack of an objective tracking limits strongly the quality of the inspection. Most often quantitative information with relatively high precision is required (e.g. current state of a quay wall). In this respect, it might be more economic and appropriate to use dedicated underwater visualisation tools to provide results which respond the best to our Client’s requests. These techniques have many advantages: Reasonably fast installation on a vessel of opportunity. Quick, accurate (mm to cm) and safe underwater measurements in harsh environments with high noise levels, turbidity, tidal current, waves, etc. An online monitoring of the underwater situation and tracking its evolution with time. Measurements can be done in real-time on 2D or 3D video images or on 3D geo-referenced point clouds. A large inspection range and an economic coverage of (large) survey zones. An online monitoring of moving targets which offers the possibility to a crane operator to follow-up the ongoing operations beneath the water level, independent of the visibility in the water column. In order to select the most appropriate techniques, many different parameters are taken into account: Type of inspection or monitoring Dimensions of the zone to be surveyed Required resolution Static or dynamic targets Local site conditions (current / turbidity / water depths) Online image (no processing) and ease of interpretation by e.g. a crane operator Available nautical means (ship size / ROV / AUV) G-tec has a large experience in deploying the following visualisation techniques: Video camera Laser Scanner Imaging Sonar Side-Scan Sonar EchoscopeTM Multi-beam echo-sounder with 3D modelling Our services Geophysics Seabed Clearance Inspection & Monitoring Geophysics Seabed Clearance Inspection & Monitoring Any questions ? I would like to subscribe to the newsletter. yes no These fields are mandatory France G-tec s.a.s. Avenue du Bois, 251 Parc du Pont Royal, Bâtiment F, 59130 Lambersart Belgium G-tec s.a. Z.I. des Hauts-Sarts Zone 3 Rue des Alouettes 80, B-4041 Milmort T. +32 (0) 4 387 85 00 F. +32 (0) 4 387 85 09 Morocco Hydrogeo sarl Rue Al bahr Al Abiade Al Moutawassit, Villa CGI 142, La Corniche, Hay El-Fat Rabat T. +212 (0) 537 28 04 03 F. +212 (0) 537 28 04 02 info@g-tec.eu Share us on... Certified ISO 9001:2008, ISO 14001:2015 and OHSAS 18001:2007. Health, Safety, Environmental and Quality awareness are a key factor in G-tec success when performing campaigns and surveys. Photo credits : G-tec s.a. - John Fielding Terms & Conditions Privacy ©2015 G-tec Design & Devlopement by Visible.be