Sources Sought 15kV Switchgear & Station Service Replacement at Lake Tenkiller, OK

The work includes Replace the three existing 15kV switchgear lineups for the generator breakers and station service transformer feeder breakers.• Removal of existing 500 kVA, 13.8 kV/480V station service transformer• Removal of existing 15 kV switchgear and breakers located beneath control room• Removal of 480V station service switchgear in control room• Removal of the existing 15kV cables to the switchyard• Removal of existing potheads for the 15kV cable transition to switchyard bus• Removal of the existing asbestos cable trays containing 15kV cables in cable tunnel• Installation of new 15kV cables to the switchyard• Installation of new potheads for the 15kV cable transition to switchyard bus• Installation of new cable trays containing the new 15kV cables in cable tunnel• Installation of front accessible double-ended 480V switchgear beneath control room with feedercircuit breakers• Installation of 15kV switchgear with new vacuum circuit breakers and redundant 500 kVA13.8kV/480V, high-resistance grounded wye station service transformers• Reconfiguration of project diesel generator to wye-grounded with high-resistance groundingresistor.• New control and annunciation wiring for new 480V and 15kV switchgear where existing cablesare not reused.• Modifications to protective relay settings and new protection relays for the new station servicefeeders.• Automatic transfer functionality for the 480V switchgear main & tie breakers, along with local arcflash mitigation switches.• Replacement and relocation of existing Lighting