![]() ![]() Here is a calculation of earthing resistance of a small typical wellhead platform 30 x 30 m. The current density must also be kept low to avoid unacceptably high chlorine emissionsĪt present, it is very difficult to perform the grounding measurement in actual seawater. HVDC, offshore wind farm in shallow water, health and environmental impact due to electric current dissipated through the platform legs needs to be assessed since it is important to keep electric fields low to avoid effects on swimmers accidentally entering the area and sea animals. The resistance of a single earth rod is calculated if the soil. We always assume it must be a good earthing and has a very low earthing resistance value. The resistance of earth surrounding a vertical electrode is dependant mainly upon the. The resistance we measure with a rod separation of 2 meters is the average resistivity of the soil to the depth of 2 meters. The instrument reading then has to be multiplied by 2pa to get the average resistance. Usually, we don’t bother with the earthing resistance value of an offshore platform. The resistance is equal to the voltage divided by the current (V/I). Data privacy and security practices may vary based on your use, region, and age. Safety starts with understanding how developers collect and share your data. How much is earthing resistance of an offshore oil platform? Here the users can calculate earth resistance when electrodes arranged in 1)In-Line 2) In a Hollow Square 3) In a Rectangle.
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