04-12-2021 BPU RPT 03 - Laserfiche WebLink

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RIVERSIDE PUBLIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: APRIL 12, 2021 SUBJECT: PURCHASE OF 30 LM6000 FUEL NOZZLES FROM SCORE ENERGY, LLC. OF HOUSTON, TEXAS IN THE AMOUNT OF $52,029 ISSUE: Consider approval of the expenditure for purchase of 30 LM6000 fuel nozzles from Score Energy, LLC. of Houston, Texas in the amount of $52,029. RECOMMENDATION: That the Board of Public Utilities approve the expenditure for the purchase of 30 LM6000 fuel nozzles from Score Energy, LLC. of Houston, Texas, in the amount of $52,029. BACKGROUND: The Riverside Energy Resource Center (RERC) is comprised of four fast start gas turbine generators that were manufactured by GE Packaged Power, LLC (GE). The facility produces a maximum output of 195 megawatts of electricity in less than 10 minutes and serves a critical role in meeting customer energy demands. Each gas turbine unit utilizes 30 gaseous fuel nozzles that are vital to generating electricity and maintaining compliance with air emissions. Each nozzle is manufactured to deliver a very fine atomized mist that creates a precise flame pattern. Improper flame patterns create an imbalance of heat that can cause an exceedance of our air emission limits and costly damage to engine components. Fuel nozzles are exposed to temperatures as high as 1,500 degrees Fahrenheit and their performance is closely monitored during each turbine operation. Fuel nozzles are subject to normal wear and periodic replacement is sound maintenance practice that ensures the safe and reliable operations. A total of 120 fuel nozzles are in use throughout the four units at RERC. Staff keeps an inventory of 30 spare fuel nozzles to support their maintenance with the capability of replacing a full set on one unit if needed. During a recent maintenance activity, staff replaced a full set of fuel nozzles and the overhauled fuel nozzles will support future maintenance requirements on the gas turbine engines at RERC.