Unique Maritime Group | Uniquegroup

Remote Operated Vehicles – Application And Operation

Nov 13th 2014 at 6:10 AM

Professional diving or commercial diving is a form of diving where divers are paid to plunge underwater for various reasons. Many branches of professional diving are known today, which attract habitual divers to make a good career in the marine and oil & gas industry. However, any person wishing to become a good diver has to undergo specific training from institutions accredited by regulatory bodies. In addition to this mandatory training, a number of equipments are required for successful diving operations. Remote operated vehicles are also highly used in various industries by divers for various purposes.

A Remote Operated Vehicle (ROV) serves many functions, especially for site characterization surveys, where they are used for quality control, dive team assistance, and other operations. Reacquisition applications also make good use of ROVs for geo-registration, detection or investigation of interested items on or below the sea surface.

However, underwater object detection with ROVs poses many challenges. For instance, the detection sensors must be mounted subsequently away from the vehicle in order to reduce noise from the vehicle sensors used. Conversely, the detection sensors are also required to be mounted close enough for successful vehicle manoeuvring. In this regard, vehicle noise characterization with respect to sensor standoff and orientation is put under brief discussion to obtain optimal results. ROV is widely used for pipeline and cable inspection. By using an ROV the pipeline leaks, damages and defects can be easily rectified.

For ROV applications, the collection of allied detection sensor data accompanied by global position information is needed. However, the position accuracy may be altered on the basis of methods used and may also be affected by deployment and site conditions. Simultaneously, various positioning systems with respect to underwater project detection are also required. The positioning systems may include Doppler Velocity Logs (DVL), Real-time Kinematic Global Positioning System (RTK-GPS), and/or Ultra-Short Base Line (USBL).

The development of underwater metal detection systems is dependent on electromagnetic induction (EMI) and magnetometer sensors, which are mounted on a ROV. There are various detection sensors which are being used, such as fluxgate magnetometers. A diver handheld EMI sensor may also be used when modified for data transmission through the ROV umbilical to aid in digital data collection and audio data delivery outside.

For different applications with a remote operated vehicle, development, operation or performance of various consignments are discussed. In addition, ROV and dive team efficiency is also taken into consideration to ensure that the project will culminate successfully.

Please to comment

sign in

Remember Me

New to IM faceplate? join free!

Lost Password? click here