Refurbishment of Existing On Load Tap Changer at Adobe Creek Substation - AC21

The City of Palo Alto Utilities is seeking a contractor under RFQ199445 to refurbish the existing TLH-21 On Load Tap Changer (OLTC) on an Allis Chalmers 15MVA transformer at the Adobe Creek Electric Substation (AC-21). This project is critical to mitigating reliability risks for customers served by the Adobe Creek, Colorado, and Maybell substations, as the current transformer is offline due to mechanical failures and oil migration issues. The scope of work includes replacing the TLH-21 LTC with a certified re-manufactured component, draining and filling the LTC and main tanks, re-sealing barrier boards and pass-through studs, replacing the 60KV SMD fuse holder and radiator valves, and performing comprehensive pressure and vacuum testing. The City mandates the use of Allis Chalmers TLH-21 components and will not accept alternate substitutions. The contract will be awarded to the lowest responsive and responsible bidder based on the lowest Base Bid. Qualified bidders must demonstrate sufficient experience, capacity, and a satisfactory performance history, and must provide proof of registration with the California Department of Industrial Relations. As a public works project, the contract is subject to California prevailing wage laws and requires compliance with the City's Environmental Purchasing Policy. Key administrative requirements include monthly invoicing in arrears with a 30-day payment term, the submission of insurance certificates to the purchasing support email, and the provision of bond forms if the contract sum exceeds 25,000 dollars. Delivery terms are F.O.B. Palo Alto, Freight Prepaid, and the City remains responsible for de-energizing and grounding the transformer to ensure a safe work area.