SEA Marconi has just completed a dehalogenation treatment (performed on-load, with the transformer energised and under load) at a hydroelectric power plant in Romania.
These activities are routine for SEA Marconi, which performs 20 to 25 transformer treatments simultaneously every day in different areas of the world. In this specific case, however, the intervention was successfully carried out despite particularly severe environmental conditions, as shown in the video published by our partner Energotech on LinkedIn, with temperatures down to –16 °C, heavy snowfall, ice and a steep snow-covered access road.
Dehalogenation is the treatment that allows the reduction and removal of PCB content from insulating fluids down to the values prescribed by international regulations. The 7-day activity involved a 16 MVA – 110 kV transformer containing 12,560 kg of insulating oil.
The treatment, performed using mobile and modular units designed and built by SEA Marconi, reduced PCB contamination below 50 mg/kg, without replacing the oil charge and without generating contaminated waste, ensuring operational continuity and regulatory compliance.
With over 50 years of international experience, SEA Marconi confirms its leadership in addressing the PCB issue, applying the best available technique and the best environmental practice to protect safety, assets and the environment.
