great presentation, i have a question: Steel and galvanic corrosion, have you ever find evidence of steel damaged by the lack of grounding in electrical powered machinery? I find some alarming signs steel degradation in many surface machinery and transport infrastructure ( conveyors ) on mining operations. I suspect some of the damage could be related with the effect you describe in the presentation (grounding problems). Thank you!
Roy, Whether your issue is related to electrical grounding issues (or not) can only be conclusively evaluated by formal interference testing. That said, lack of grounding can set up stray currents in structures which can cause corrosion, particularly if VSD’s are involved. If grounding is intact, you then sit with bi-metallic (galvanic) couples between steel structures and either copper earthing systems or reinforced concrete foundations. (Copper and steel-in-concrete are very close electrochemically). I hope this helps. You are welcome to contact us directly if you need more detailed investigation which we can offer through our engineering service division. Neil Webb
great presentation, i have a question: Steel and galvanic corrosion, have you ever find evidence of steel damaged by the lack of grounding in electrical powered machinery? I find some alarming signs steel degradation in many surface machinery and transport infrastructure ( conveyors ) on mining operations. I suspect some of the damage could be related with the effect you describe in the presentation (grounding problems). Thank you!
Roy, Whether your issue is related to electrical grounding issues (or not) can only be conclusively evaluated by formal interference testing. That said, lack of grounding can set up stray currents in structures which can cause corrosion, particularly if VSD’s are involved. If grounding is intact, you then sit with bi-metallic (galvanic) couples between steel structures and either copper earthing systems or reinforced concrete foundations. (Copper and steel-in-concrete are very close electrochemically). I hope this helps. You are welcome to contact us directly if you need more detailed investigation which we can offer through our engineering service division. Neil Webb