REPORT TO COUNCIL
SUBJECT
Title
Action on the Award of Purchase Order to RWG USA, Inc. for Turbine Engine Major Overhaul Services for Silicon Valley Power
Report
BACKGROUND
The City of Santa Clara's Electric Utility, Silicon Valley Power (SVP) operates three gas fired power generation facilities within the city limits. The Donald Von Raesfeld Power Plant (DVR), the main facility, is a 2x1 combined cycle power plant rated at 147 Megawatts of electrical power generation. The Gianera Generating Station, the City's peaking generation facility, is rated at 49.5 Megawatts of electrical power generation. The Cogeneration Plant, rated at 7 Megawatts, utilizes two Alison 501-KB5 gas turbine engines for power generation.
The turbine engines at the Cogeneration Plant require periodic inspections, repairs, and replacement of parts to maintain optimum availability and reliability. Engine number ASP-758 was removed from service in 2009 due to an extension shaft bearing failure. The extension shaft bearing was replaced, and repairs were also made to the turbine section due to impact damage. However, in 2010 another extension shaft bearing failure occurred and all engine mainline bearings were replaced. Repairs were also made to the turbine section to repair impact damage found during disassembly. In 2014, all engine bearings were replaced, and the extension shaft was upgraded to a high torque configuration. A mid-life repair was also completed in 2016.
The engine was recently removed from service due to vibration and further bearing failure issues; the engine shut down on multiple magnetic material detection alarms and the magnetic plug has progressively collected more metallic debris. SVP performed an evaluation with an outside consultant and determined the engine requires a major overhaul.
DISCUSSION
On May 7, 2019, the City published a Request for Proposal (RFP) for turbine engine major overhaul services, using BidSync, the City's e-procurement system. ...
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