What immediate actions are required when a transformer is leaking oil?

Immediate actions include isolating the leak area, preventing oil from reaching soil or water, and stabilizing the oil level. Absorbent materials or containment systems are deployed to stop spread. The transformer is inspected to determine leak severity and operational risk. Oil level and temperature are monitored continuously. If safe, the unit remains energized until repair; otherwise, it is de-energized. All actions are documented, and environmental authorities are notified if required.