04-05-2013 BPU RPT 04 - Laserfiche WebLink

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W A T E R E N F R G Y f l F f RIVERSIDE PUBLIC UTILITIES L3W& Board Memorandum PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES DATE: April 5, 2013 ITEM NO: 4 SUBJE T: HARVEY LYNN SUBSTATION SWITCHGEAR BUS TIE RECONFIGURATION - WORK ORDER NO. 1316526 ISSUE: The issue for Board of Public Utilities consideration is approval of Work Order No. 1316526. RECOMMENDATION: That the Board of Public Utilities approve the estimated capital expenditure of $98,238 for reconfiguring Sw Itchgear 2, 3 and 5 ties located at Harvey Lynn Substation to improve system reliability. B CKGROUND: On November 20,2012, a bus fault occurred on the Harvey Lynn 12 kV switchgear bus tie. The fault was caused by severe corrosion of a section of bus and was immediately repaired. However, to improve system reliability, staff is recommending reconfiguring the switchgear bus ties. The project consists of the installation of approximately 500 feet of new conduits, removal of existing cables and installation of approximately 3,600 feet of 12 kV underground cable. The project will also include the removal of a cabinet and the installation of protective barrier to cover the side of the switchgear cabinet. Engineering design will be performed by Riverside Public Utilities (RPU) engineering staff and construction will be performed by RPU field forces. FISCAL IMEACT: The capital expenditure for the project is estimated to be $106,093. This includes all construction, contingencies, construction management and design,as summarized in the following table: Cost $ %of Total Equipment and Construction Materials $29,528 2B% Engineering Labor Including Overhead $9,708 , 9% Construction Labor Including Overhead $49,175 4896 Contingency 8,827 10% Total 1 $98,238 10096 Sufficient funds are available in the Public Utilities' Substation Bus & Upgrades Account No. 6130000- 47061 B.