In 2010, an unusual incident occurred in one of the urea production units, leading to significant operational difficulties and equipment damage. The issue was triggered by a power outage at the plant, resulting in a production shutdown. After power was restored, the unit was restarted, but difficulties in process stabilization arose. The incident highlighted problems with level measurement in the steam drums, which ultimately caused damage to the high-pressure carbamate condenser. This article presents a detailed analysis of the event, its causes, and lessons learned to improve reliability.