Background: The Medical Area Total Energy Plant (MATEP) provides all of the steam, chilled water, and electricity to some of the country's most-advanced hospitals in Boston, Massachusetts. Size & Scope: During the year 2002 / 2003 MATEP underwent an extensive power generation upgrade to its facility and Keystone Construction and Maintenance Services, under direct contract to Advanced Energy Systems, provided engineering, construction management, and construction trade services to the project.

Key elements of the project performed by Keystone Construction and Maintenance Services include:
• Heavy rigging and assembly of two ERI HRSG package boilers, economizers, transitions and gas path expansion joints.

• Installation, assembly and alignment of two Alstom gas turbine generators and all appurtenances.

• Structural analysis, design, fabrication and erection of structural shoring of the existing building for all heavy rigging activities.

• Demolition and relocation of existing building utilities.

• Erection of new structural steel foundations and platforms to support the HRSG boilers.

• Rigging, assembly and tie in of all gas path exhaust breaching, dampers, and hanger systems from the gas turbines to the existing plant stack.

• Rigging and assembly of new electrical gear and transformers.

• Demolition and architectural fit out of a new control room.

• Erection of a roof-top structural steel platform with a reinforced concrete slab to support the new cooling tower.

• Erection of a new GEA two-cell fiberglass cooling tower.

• Heavy crane lifts and assembly of inlet filters and gas compressors on the facility's roof.

• Miscellaneous concrete and civil work in support of other trades.

Results:
All of the above activities were completed within a nine-month period while the plant remained fully operational.