Transformer explosion reported near Russell Springs substation

What happened

A local radio station reported that fire crews responded to a reported explosion at a power substation off Highway 1729 in the Russell Springs area on a Wednesday evening, which the report places around 11 May 2022. According to the report, crews quickly extinguished a small fire resulting from the explosion, and several people in the Russell Springs area lost power. Electrical workers were out that evening helping to restore power. The report says that by 8:45 pm neither South Kentucky RECC nor KU was reporting power outages.

Contributing factors

Not reported. The source does not state the cause of the explosion, which equipment failed, or whether the substation was under maintenance.

Lessons learned

1. Substation transformers should be monitored for faults such as gas build-up, overheating and insulation deterioration, so that failures can be spotted before they become explosions.
2. Fire crews and utility staff should agree access, isolation and firefighting arrangements for substations in advance, so that a small fire can be contained quickly.
3. Operators should plan for rapid switching and restoration so that the number of customers left without power after an electrical failure is kept small.

More lessons on detection and monitoring, fire suppression and firefighting, outages, backup supply and restoration, from every incident on the register.

Source

lakercountry.com