What methods are used for transformer oil leak repair?

Transformer oil leak repair methods include the use of epoxy sealants for small leaks, welding or brazing for structural repairs, and replacing damaged gaskets or seals. For significant leaks, the transformer may need to be drained, cleaned, and inspected before applying a permanent repair solution. Additionally, pressure testing is often conducted post-repair to ensure integrity and prevent future leaks. Regular maintenance and monitoring are essential to minimize the risk of leaks.