DC Breaker Replacement

This map shows the location of the project. For projects that do not have a specific location but affect a line/route or the entire system, either the affected lines/routes are shown, or an entire service area map is shown.

If you select the option to “toggle the benefit layer,” you will see an approximation of the area that will benefit from the project.

The degree to which a project improves regional access to the region’s key destinations. Including jobs, retail, healthcare, recreation, and education.

The project improvements to existing assets to make them partially or fully accessible. Including station/stop and area improvements, vehicle accessibility, and accessible communications.

The project impact to ratings from the FTA Transit Economic Requirements Model (TERM).

The project’s minor or major benefits to riders and what proportion of the agency’s riders will benefit from it.

The project impact on overall capacity, reflecting current and planned levels of utilization.

The project impact on reductions or offsets to greenhouse gas (GHG) emissions generated from transit operations.

Project impacts on land use and development, construction, and long-term jobs.

The distribution of project benefits to location(s) identified under the USDOT Justice40 Program.

The project impact to maintenance or improvement of exposure to risk for riders/employees and the project impact to security enhancement.

The project impact on operating costs.

The project impact to maintenance or improvement of exposure to risk for riders/employees and the project impact to security enhancement.

Project impact on maintenance or improvement of service speed and reliability, considering both direct and indirect impacts.

If required, whether or not the project complies with federal, state, local, or other regulatory mandates.

The project impact to climate benefits, such as a reduction in emissions, generated from mode shift to transit and away from private auto-use.

The Project impact to average vehicle ages, compared with Service board benchmarks to prioritize replacing vehicles that are beyond their useful life.

Evaluation Metric Measure
Access to Key Destinations ? Moderately improves Access to Key Destinations
Accessibility Improvement(s) ? Project is not related to accessibility
Asset Condition (FTA TERM Rating) ? Asset(s) rated above 3
Benefit to Riders ? Helps to maintain current benefits to riders
Capacity Benefit and Need ? Project increases capacity of transit operations not near capacity
Climate Agency Operating Impacts ? No reduction in emission
Economic Impact ? No economic impact
Equity Based on Residential Geography ? Score 0-2 in Justice40 metric 'Sum of Disadvantage Indicators'
Impact on Customer and Employee Safety ? Project directly provides safety benefit/improvement
Impact on Operating Cost ? Increase
Impact on System Security ? Project maintains or replaces existing level of security
Impact to Service Speed/Reliability ? Significantly improves speed/reliability
Regulatory Requirements ? No
Ridership/Mode Shift Impacts ? Maintains assets necessary for transit ridership
Vehicle Useful Life ? Asset is not a vehicle with a useful life

Project Description

The CTA has identified additional traction power needs based on results from the Blue Line Load Flow study. These needs are targeted traction power improvements on the Blue Line such as AC/DC breaker replacement, transformer replacements, upgrading 3rd rail gap cabling, and upgrading getaway cabling and switches. The focus project for this PPS is DC breaker replacement at five existing substations with some associated state of good repair work as funding allows. These five substations and their proposed work are listed below by location: Franklin: 4 DC Feeder breakers, 3 cathode breakers, 2 ELF breakers and 1 Auxiliary Cubicle; Nagle: 4 DC Feeder breakers, 3 cathode breakers, 6 AC breaker replacement Kedvale: 4 DC Feeder breakers, 3 cathode breakers, 1 Emergency Exit Door Edmunds: 4 DC Feeder breakers, 3 cathode breakers, 3 rectifier replacement, 3 bus duct replacement, modify existing Emergency Exit door; Sacramento: 4 DC Feeder breakers, 3 cathode breakers 1. Provide design and engineering services in accordance with the Manual of Procedures for Architectural and Engineering Services and the following design efforts for this project. 2. Remove all existing equipment including, but not limited to, DC switchgear assemblies, AC Breakers (Nagle only), Rectifiers and Duct Banks (Edmunds only), relays, interconnection power and control cables connected between the traction power equipment, and SCADA RTU’s and related appurtenances. 3. Furnish and install new DC switchgear including feeder breakers, cathode breakers, ELF breakers (Franklin only) and AC Breakers (Nagle only), within new cubicles as outlined above for each substation. Provide an auxiliary cubicle. Furnish and install new Rectifiers and Duct Banks at Edmunds only. 4. Provide all required cabling and terminations. 5. Provide all factory testing, startup, and commissioning.