HomeMy WebLinkAbout9 Transformer for Truckee Substation
ACTION ITEM #9Truckee SubstationTransformers for Consideration of Purchasing Truckee SubstationTransformers for Consideration of Purchasing March 1, 2017
Purchasing Transformers for Truckee Substation transformerpressure event is indicative of an internal fault within the Sudden -conditionB and C transformers tripped on a sudden pressure
Phase •Substationat Truckee Damage •2017line at 1:30PM on Wednesday, February 22, -Truckee Substation tripped off•treespower outages across the District due to damage from falling Multiple
•2017February 20, severe winter storm hit the greater Truckee area on the week of A •2016 due to a equipment failure that occurred in 2015in Truckee Substation in transformer The District
installed an new •BACKGROUND / HISTORY Purchasing Transformers for Truckee Substation
Purchasing Transformers for Truckee Substation transformer has failed and must be rebuilt or replacedThis -transformerto a short circuit condition within the and damage due gas is a
clear indicator of internal arcing Acetylene -gashigh levels of acetylene Analysis revealed that the oil contained •smelled burntdark, cloudy, and weresamples from Phase C transformer
were Oil •transformersthe condition of the hired a specialty testing firm to evaluate District •NEW INFORMATION Purchasing Transformers for Truckee Substation
NEW INFORMATION relatively minor, it is to the District's advantage to purchase a new unitthe price differential between refurbishment and replacement is Since •and a new unit is $120,000approximatel
y $95,000 is cost to rebuild The •ostscreplacement and ebuild rTransformer •lineupunits into the working future integration of the seamless would ensure transformers Uptegraff•unitsUptegrafftransform
ers continue to be for interoperability and compatibility reasons that replacement Critical •companyUptegraff. R.ESubstation transformers were all manufactured by the Truckee •Purchasing
Transformers for Truckee SubstationPurchasing Transformers for Truckee Substation
NEW INFORMATION emergenciescurrent spare unit would remain for future The •30 plus yearsthe service life of the substation transformers for an additional Extend •Substationresult in
new units for all 3 phases at Truckee would UptegraffR.Eproposed purchase of 2 transformers from The •probability of failure is highthe C must be replaced, but Phase B is of the same
vintage and Phase •damagewith Phase C showing clear indication of internal B and C transformers both experienced sudden pressure trips, Phase •A transformer is a new unit, replaced
in 2016Phase •at Truckee Substationeplacement rtransformer for Strategy •Purchasing Transformers for Truckee SubstationPurchasing Transformers for Truckee Substation
NEW INFORMATION There is no competitive advantage to be gained by bidding•electric service to our customersThis time penalty would put the District at great risk of providing reliable
•Bidding could add 4 to 5 months to procurement process•Transformers need to be replaced before next winter season•Urgent and immediate need to replace transformers•Purchasing Transformers
for Truckee SubstationPurchasing Transformers for Truckee Substation
FISCAL IMPACT FundReserve transformer purchase will be funded from the Electric Capital The •Purchasing Transformers for Truckee SubstationPurchasing Transformers for Truckee Substation
RECOMMENDATION shippingand the amount of $24,000 for an amount not to exceed $264,000 plus tax the amount of $240,000, plus a 10 percent change order allowance in Manufacturing Co.,
in Uptegraff. R.Eorder for the transformers from and authorize the General Manger to execute a contract or purchase transformers 2 with competitive bidding for the purchase of Dispense
2.customersDistrict’s ability to provide reliable electric service to its and place in service the two transformers without risking the an advantage to the District because it would
take too long to obtain required to follow a competitive bidding process would not produce two transformers damaged in the recent storms and that the time findings that there is an
urgent and immediate need to replace Make 1.Purchasing Transformers for Truckee SubstationPurchasing Transformers for Truckee Substation