Mitigating SF6-emissions: Performance evaluation of external adhesives as leakage mitigation in simulated and field conditions

SF₆ (sulphur hexafluoride) is a highly potent greenhouse gas used in high-voltage electrical equipment for insulation and arc-quenching. Despite the many efforts to reduce SF₆ emissions, a significant amount is still released due to small leaks in electrical equipment. Given its exceptionally high global warming potential (GWP) of 24.300 [1], reducing SF₆ emissions is a significant priority. In 2022, a program was initiated with the aim of developing practical methods to quickly and effectively seal complex SF₆ leaks, thereby reducing emissions, operational downtime, and costs. The program was carried out in three phases. Phase 1: A study on all types of SF₆ leaks and their possible causes including an accompanying product selection.