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Dignity Health – Generator Support PLC Redundancy

Performed design, fabrication and programming services to provide a more robust and reliable control system. Existing Schneider Quantum PLC was no longer supported by the manufacturer and was upgraded to a Schneider M580 PLC in a separate rack with redundant processor and power supplies. Entire system was recommissioned.

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ASARCO Ray – Pit Sonora Substation NFPA 70E Arc Flash

Provided Professional Engineering Services to update the power study model for the Sonora Substation that feeds the PIT and various downstream power distribution. Work was based on existing Power Study files in SKM. Model was compared to field equipment and updated to match.

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Pima County RWRD – TRW Power Quality Metering Design & Procurement

Provided a Power Quality Monitor (PQM) System at the Tres Rios site for Pima County to increase data collection and reliability of the power distribution system. Provided a design upgrade at the Tres Rios WWTF consisting of site visits, design drawings, design specifications along with coordination between Pima County and Ashton.

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Global Water Resources – Maricopa Lift Station

Providing Electrical Engineering support and System Integration services including an assessment, panel procurement, and process programming. Arc Flash will be performed based on IEEE/ANSI standards. Acceptance testing will be performed on the power distribution system. Procurement scope includes an RTU-100 PLC control panel.

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City of Yuma – Desalt WTP Power Study & Design

Providing Electrical Engineering services for a power study, design changes, and support during construction. Power study scope includes a site wide short circuit fault analysis, protective device coordination, and ARC flash hazard study per specification 16305 Electrical System Studies.

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