The Santan Expansion Project is located at the Santan Generating Station, 1005 S. Val Vista Drive, Gilbert, Arizona. When complete it will consist of an 825-megawatt, natural gas combined-cycle generating facility that will:

• provide electricity for up to 200,000 homes
• occupy about 20 acres on the existing 120-acre Santan Generating Station property
• be available to meet customer demand when it occurs
• provide continued reliability during even the hottest summer days.

This expansion project is both interesting and challenging. Salt River Project requires (and rightfully so) a great deal of attention to safety. Every trade's person is required to participate in a full day of specific on site "situational" safety instruction.

Metro Mechanical, Inc. installed 200,000 cfm of make-up air and exhaust for the turbine room. Much of the ductwork had to be installed at elevations nearly 100 feet above the finished floor.

Fifty tons of a bit more normal air conditioning was installed in the new Control Room.

The third building on this project was the Chemical Feed building. This area required an additional 12,000 cfm of make-up air and exhaust. Not quite as difficult as the Turbine building, but unique in the requirements for corrosion protection.

Part of the Turbine building was a separate room for the back-up battery systems. Also, in this area a lot of attention was necessary to make sure proper ventilation is maintained.

The project is ahead of schedule and on budget. The buildings are progressing in phases with most of the installed systems up and running. Final completion should occur in the next few months (8/05).

All in all Metro Mechanical, Inc. is proud to have been on the team with Builders Guild Inc. and Salt River Project.

Battery Room exhaust and make-up air

Make-up air in the Turbine Room - nearly 100' A.F.L.

2 - 8000 cfm wall mounted exhaust fans

Control Room ductwork