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' E N E R G Y L I F E <br />PUBLIC UTILITIES <br />RIVERSIDE PUBLIC UTILITIES <br />BOARD OF PUBLIC UTILITIES <br />Board Memorandum <br />DATE: JUNE 14, 2021 <br />SUBJECT: PURCHASE OF AUTOMATIC VOLTAGE REGULATOR SPARE PARTS FROM <br />OEM PARTS NETWORK OF RANCHO CUCAMONGA, CALIFORNIA FOR <br />$119,078 <br />ISSUE: <br />Consider approval of the expenditure for the purchase of automatic voltage regulator spare parts <br />from OEM Parts Network of Rancho Cucamonga, California, in the amount of $119,078. <br />RECOMMENDATION: <br />That the Board of Public Utilities approve the expenditure for the purchase of automatic voltage <br />regulator spare parts from OEM Parts Network of Rancho Cucamonga, California in the amount <br />of $119,078. <br />BACKGROUND: <br />Riverside Energy Resource Center (RERC) Units 3 & 4 have been in operation since being <br />commissioned in April 2011. Combined, the two gas turbine units produce a maximum output of <br />100 megawatts of electricity in less than ten minutes and serve a critical role in meeting customer <br />energy demands. <br />Automatic Voltage Regulators (AVR) are critical to the operations of RERC Units 3 & 4. Each unit <br />has a dedicated AVR that adjusts generator voltage to the proper levels required to safely <br />synchronize to Riverside's electricity grid and export electricity to the customers. <br />The AVRs on RERC Units 3 & 4 consist of complex electronic components that require periodic <br />diagnostic tests and maintenance. The next maintenance activity on the AVR systems is planned <br />during a routine outage in November 2021. In order to minimize the amount of time that the RERC <br />units would be down for repairs, staff recommends having the manufacturer's suggested spare <br />parts in stock to support this project. If the parts are not needed for the upcoming maintenance, <br />the parts would be available for future AVR repairs. <br />DISCUSSION: <br />Purchasing Resolution No. 23256 offers the option to conduct informal proposals under Section <br />404 titled Utilities Exception. Under this section, it is recognized that the water, electric and sewer <br />utilities have a need for compatibility within their respective systems for uniform operation, <br />