TENNESSEE — Delta Star Field Service has completed a full scope transformer upgrade project for a customer in East Tennessee.
Lenoir City Utilities Board (LCUB) in East Tennessee had reported leaks on an older transformer at their Turkey Creek Substation.
A Delta Star Field Service crew performed pre-electrical testing on the transformer, disassembled the existing unit by removing high side bushings, low side bushings, and radiators.
The transformer was then transported to its new location for storage where the Delta Star crew re-assembled the unit. They determined that the source of the leaks were incorrect gasket sizes and packings used during prior attempts to stop the leaks.
The existing valves were rebuilt using the correct packings and radiator gaskets. All manhole and gauges were re-gasketed as well. The crew then pulled vacuum on the transformer to remove any moisture then oil filled the transformer. The transformer was tested electrically to confirm the unit was ready for service then released back to the customer.
The removal of the older transformer at Turkey Creek made way for a new 20 MVA Power Transformer from Delta Star’s Saint-Jean-sur-Richelieu facility.
“Delta Star is able to provide field service support for maintenance as well as transformer relocations, decommissioning, and installations,” said Tim Rinks, Regional Sales Manager at Delta Star. “Because Delta Star is a transformer OEM, we were able to utilize our project management resources and manage the complete project for the Lenoir City Utilities Board. This brings an enormous value to the customer to have a single point of contact for transformer replacement and even sourcing those hard-to-find parts.”
The project was completed in three weeks, the manufacturer said in a press release.
Source: Delta Star