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Philadelphia Water Department

Written by Dale Kemmerer on . Posted in Water-Wastewater

On-Call Contract

Philadelphia Water Department

Philadelphia, PA

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Switchgear Replacement at the Pre-Treatment and Intake Buildings, Baxter Water Treatment Plant, Philadelphia, Pennsylvania
Prime Professional for the Preliminary Design, Design and Construction Phase Services for new double-ended 15kV & 480V substations at the Baxter Water Treatment Plant. Project included replacement of switchgear at Pre-Treatment Building, Modifications to Switchgear in Filter Building and 15kV dual Electrical Service to Intake Building. A new building was constructed to house the new switchgear serving the Pre-Treatment Building. Philadelphia Water Department Work No. 61054. The PWD Baxter project includes new combined double-ended 15kV & 480V switchgear that is over 40′ long. It consists of six double-tier 15kV vacuum breakers, two 1500kVA cast coil transformers and a main-tie-main 480V low-voltage draw-out switchgear. This new switchgear line feeds the critical pre-treatment building processes at Philadelphia’s largest fresh water distribution plant – Baxter Water Treatment Plant – that produces approximately 160 million gallons of water per day or about 60% of the demand in the City. The maximum shut-down time allotted for critical circuits as identified by the PWD was 15 minutes, therefore a complex construction phasing and sequencing set of plans and specifications was required. The construction value was $2,298,000. Project construction was completed in 2005.

Switchgear Replacement at the Filter Building, Baxter Water Treatment Plant, Philadelphia, Pennsylvania
Prime Professional for the Preliminary Design, Design and Construction Phase Services for new double-ended 2.4kV & 480V substations at the Baxter Water Treatment Plant. Project included replacement of switchgear at Filter Building and replacement of all 15kV and 5kV medium voltage cabling throughout the entire Plant. Philadelphia Water Department Work No. 61058. The PWD Baxter project includes new double-ended 2.4kV switchgear serving four 300 HP backwash pumps, new 480V and 208V switchgear serving the entire Filter Building. This new switchgear line feeds the critical filter building processes at Philadelphia’s largest fresh water distribution plant – Baxter Water Treatment Plant – that produces approximately 160 million gallons of water per day or about 60% of the demand in the City. The maximum shut-down time allotted for critical circuits as identified by the PWD was 15 minutes, therefore a complex construction phasing and sequencing set of plans and specifications was required. The construction value was $1,838,702. Project construction was completed in 2006.

Influent Pump Control Replacement at the Southeast Water Pollution Control Plant, Philadelphia, Pennsylvania
Prime Professional for the Preliminary Design, Design and Construction Phase Services for the replacement of Influent 5kV, 700 HP Pump controls at the Southeast Water Pollution Control Plant. Project included replacement of the eddy current clutch controllers and power supplies for the three variable speed 700HP pumps and replacement of all protective relaying for each of the six 700 HP pumps (three variable pumps and 3 constant speed pumps). All monitoring and control of these pumps was integrated into the Plant-wide DCS (Digital Control System) system. Philadelphia Water Department Work No. 72037. The PWD Southeast Water Pollution Control Plant cleans 194 million gallons per day and was built as part of the City’s massive stream clean up in the early 1950s. Its expansion and renovation began in 1975 and continued through 1983 to meet more strict federal water pollution control laws. The PWD imposed strict construction phasing and sequencing requirements, which included a maximum of one variable and one constant speed pump that were allowed to be under control renovation at any one time. The construction documents were designed to allow for the PWD imposed constraints in such a way that all testing and commissioning could occur during the course of normal plant operations. The construction value was approximately $350,000. Project construction was completed in 2003.

Switchgear Replacement at the Belmont Water Treatment Plant, Philadelphia, Pennsylvania
Prime Professional for the Preliminary Design, Design and Construction Phase Services for the replacement of all electrical 15kV, 2.4kV, 480V and 208V switchgear, panelboards and feeders at the Belmont Water Treatment Plant. In addition to the existing equipment replacement, a new 15kV generator will be designed to backup the entire Belmont Water Treatment Plant. Philadelphia Water Department Work No. 62083. The Belmont Water Treatment Plant treats an average of 40 million gallons a day. The plant uses water from the Schuylkill, which has a higher mineral content and is slightly harder than water from the Delaware River. The Belmont Plant was opened in 1904 on the site where a pumping station had once stood in the late 1860s. The Belmont and Queen Lane Plants provide about 40% of the City’s population with water. Project construction cost is $5,200,000.

New Backup Generator at the Baxter Water Treatment Plant, Philadelphia, Pennsylvania
Prime Professional for the Preliminary Design, Design and Construction Phase Services for new 1MW backup generator that will serve the entire Baxter Water Treatment Plant. The design will include new security walls, fencing, walk-in generator housing and 15kV switchgear modifications and integration. Philadelphia Water Department Work No. 61074 & 61075.
The Baxter Water Treatment Plant treats an average of 160 million gallons a day. When the Baxter Plant was opened in 1909 it was called the Torresdale Plant. It was renamed in 1982 for Samuel S. Baxter, the first Philadelphia Water Commissioner. The Baxter Plant treats water from the Delaware River. Baxter provides water to almost 60% of the City’s population. It also serves some parts of Lower Bucks County. Project construction value is $1,200,000.