05-24-2021 BPU RPT 09 - Laserfiche WebLink

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W A T E R E N E R G Y I T F F r� E kd& P U B L I C U T I L I I I L S RIVERSIDE PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES Board Memorandum DATE: MAY 24, 2021 SUBJECT: BID NO. SUB -849 15KV CIRCUIT BREAKER REPLACEMENT PROJECT WITH ANNIXTER, INC. IN THE AMOUNT OF $470,877.02 — WORK ORDER NO. 2120986 FOR A TOTAL CAPITAL EXPENDITURE IN THE AMOUNT OF $490,000 ISSUES: Consider awarding Bid No. SUB -849 for Multiple Substations 15KV Circuit Breaker Replacement Project with Anixter, Inc., of Corona, California, in the amount of $470,877.02; and approval of Work Order No. 2120986 for Multiple Substations 15kV Circuit Breaker Replacement Project in the amount of $490,000. RECOMMENDATIONS: That the Board of Public Utilities: 1. Award Bid No. Sub -849 for Multiple Substations 15kV Circuit Breaker Replacement Project with Anixter, Inc., of Corona, California in the amount of $470,877.02; and 2. Approve Work Order No. 2120986 for Multiple Substations 15kV Circuit Breaker Replacement Project in the amount of $490,000. BACKGROUND: 15 kilovolt (KV) circuit breakers are one of the most fundamental and critical components in electric distribution substations. The 15kV circuit breakers are housed in walk-in switchgear within the boundaries of the substation facility. This type of equipment provides over -current protection and protects the power grid from electrical faults and disturbances. It also provides the means of isolating other electric equipment sections within the station for maintenance, switching, or construction. The average service life of breakers is between 30-40 years. The condition of the breaker is a significant factor to interrupt high levels of current during electrical faults. Improper performance of this equipment compromises the reliability and safety of the distribution system, which could result in long outages. Engineering staff evaluated the condition of the distribution circuit breakers based on the life expectancy, risk factors, and electrical testing data to reduce the probability of in-service failures of circuit breakers. The evaluation identified a total of 15 distribution circuit breakers that need to be replaced at Harvey Lynn, Riverside, and Kaiser substations.