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Top 10 Backup Power Considerations - Wastewater Treatment Facility

Top 10 Backup Power Considerations - Wastewater Treatment Facility

7/22/2014

Top 10 Considerations for an Emergency Backup Power System for a Wastewater Treatment Facility

When designing a wastewater treatment facility, following are the key design considerations for selecting a properly configured generator.

Sizing
1. Size the generators for a full load at the plant.
2. Generally, two smaller paralleled generator units are preferable to one larger generator.
3. Establish critical loads for the plant, which may vary depending on the length of the outage.
4. Limit connections to the existing electrical distribution system. This helps minimize potential breakpoints and allows you to plan the most direct route for electric flow.

Startup time
5. Assume a worst case scenario of your highest projected flow.
6. Account for the resetting of the equipment, and the Supervisory Control and Data Acquisition (SCADA) systems which monitor and control the plant.
7. Overall plant configuration may also impact startup times.

Fuel Considerations
8. Determine the average length of outages in the area.
9. Take into account the effects of fuel storage as well as engine type.
10. Follow a general rule of thumb using 72 hours at full load.

Generac’s Power Design Pro™ software can model different loads, fuels and alternators to help engineers and contractors determine the most efficient generator configuration for each individual project.