Specifications_For_The_Repair_of_Substation_Transformer_AC_21.pdf

This specifications document details the repair and refurbishment requirements for a 15 MVA Allis Chalmers substation transformer (Adobe Creek Transformer-21) owned by the City of Palo Alto Utilities Department located in Santa Clara County, California. The primary scope involves replacing a 1967 TLH-21 on-load tap changer with a certified remanufactured unit, draining and processing approximately 4,348 gallons of oil from the main tank into contractor-provided containers for reuse, draining 760 gallons from the OLTC tank into city-provided containers, and replacing radiator valves, gaskets, and the 60 kV SMD fuse holder. The contractor must complete comprehensive pre-work testing including power factor analysis, turns ratio testing, excitation testing, winding resistance measurement, and dissolved gas analysis, then perform identical post-work diagnostics along with sweep frequency response analysis. Work is anticipated to commence on or about July 1, 2026, with completion required within eighty calendar days from the Notice to Proceed. Proposals must be submitted electronically by 3:00 p.m. on April 9, 2026, with questions due by 1:00 p.m. on March 30, 2026.

The contractor must provide all labor, equipment, materials, and transportation necessary to complete the work while the City remains responsible for de-energizing, disconnecting, isolating, and grounding the transformer and disposing of any oil not designated for reuse. Contractors must be registered with the California Department of Industrial Relations and comply with prevailing wage requirements under California Labor Code Sections 1720 et seq. A bid bond of not less than ten percent of the aggregate bid amount is required for bids exceeding $25,000, and performance and payment surety bonds equal to 100 percent of the contract sum must be furnished within ten business days of award. Liquidated damages of five hundred dollars per day apply for unexcused delays beyond the contract completion date. The contract will be awarded to the lowest responsive and responsible bidder based on demonstrated ability, experience, capacity, equipment, resources, and satisfactory performance record. No specific budget amount is disclosed in the procurement documents, and no incumbent vendors or set-asides for disadvantaged enterprises are identified.