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Substation Upgrade/Repairs
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DESCRIPTION: A request for Powell Electrical Systems to repair the substation circuit breaker and components.
AGENDA NO: Click or tap here to enter text.
ACTION REQUEST:
? Approval ? Review Comment ? Information Only ? Other
RECOMMENDATION:
recommendation
Authorize the Chief Executive Officer to award a contract to Powell Electrical Systems to repair three operationally essential substations at a cost not to exceed $1,046,565.00.
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ISSUE/BACKGROUND:
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Our substations that receive incoming AC power from Entergy and converts it to DC power for streetcar use is approaching half of its useful life of 40-50 years and parts are starting to fail with no replacement parts available such as circuit breakers, which work as a protection device that controls the flow of electricity using an internal switch that trips when there is excessive current in the circuit from an overload or a short circuit. This procurement will be a part of an ongoing program as new components are released. Without this critical procurement streetcar service will become limited and may be cancelled due to substation failures.
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DISCUSSION:
The substations that require heavy repairs were manufactured as follows: Dublin (06/2007), Valance (08/2007), and Calliope (12/2006). On 9-28-23 three of our six circuit breakers were sent to the manufacturer (Powell Electrical Systems) for repairs due to failures and it was discovered repairs could not be made due to the age of the breakers and parts becoming obsolete in 2019 (See AttD-ETB-0015). Proprietary rights to this equipment are held by Powell Electrical Systems (See AttA- 259159-SAE-FO-0037). Powell Electrical Systems has worked on a retrofit system to bring our current substations up to date to accept the available circuit breakers with delivery of the complete package estimated at 80 weeks (See 259159-Proposal section 6 page 8 for table). Along with this retrofit system, our Mec...
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