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<br /> <br /> RIVERSIDE PUBLIC UTILITIES <br /> Board Memorandum <br /> <br />BOARD OF PUBLIC UTILITIES DATE: AUGUST 22, 2022 <br /> <br />SUBJECT: EXPENDITURE FOR COSTS ASSOCIATED WITH A SIX-MONTH CONTRACT <br />EXTENSION WITH TRANE U.S., INC., FOR MAINTENANCE AND AS-NEEDED <br />REPAIRS ON THE AIR INLET CHILLERS AT RIVERSIDE ENERGY <br />RESOURCE CENTER FOR $51,067 THROUGH MARCH 31, 2023 <br />ISSUE: <br />Consider approving an expenditure for costs associated with a six-month contract extension with <br />Trane U.S., Inc., for maintenance and as-needed repairs on the air inlet chillers at Riverside <br />Energy Resource Center for $51,067 through March 31, 2023. <br />RECOMMENDATION: <br />That the Board of Public Utilities approve an expenditure for a six-month contract extension with <br />Trane U.S., Inc., for maintenance and as-needed repairs on the air inlet chillers at Riverside <br />Energy Resource Center for $51,067 through March 31, 2023. <br />BACKGROUND: <br />Riverside Public Utilities owns and operates the Riverside Energy Resource Center (RERC). This <br />facility is comprised of four fast-start gas turbines units that are strategically located in the City <br />limits and capable of achieving maximum power output in less than ten minutes. RERC generates <br />195 megawatts (MW) of electricity and serves a critical role in meeting energy demands during <br />peak periods. Each unit pair, RERC Units 1 & 2 and Units 3 & 4, shares a 3,500-ton air inlet <br />chiller system. The chilling system cools the ambient air entering each gas turbine to 47 degrees <br />Fahrenheit. During the summer peak load and temperature months, 20% of the plants capacity <br />to generate electricity is attributed to the colder air from the air inlet chillers. Without the chillers, <br />the plant capacity can be reduced from 195 MW to 157 MW or lower. <br />Both chillers at RERC have reached a stage in their useful life cycle that require a higher level of <br />maintenance to sustain high operational reliability and minimize air emissions in compliance with <br />the California Air Resources Board (CARB) regulations. CARB regulates the amount of <br />refrigerant released into the environment and requires each power plant owner to install and <br />maintain a leak detection system. Refrigerant usage is closely monitored, and leaks are repaired <br />on an as-needed, best effort basis. <br />On August 24, 2020, the Board of Public Utilities approved a two-year agreement from September <br />1, 2020, to September 30, 2022, with Trane U.S. Inc. (Trane) to perform quarterly preventative <br /> <br />