Chiller Replacement Roybal Campus

This acquisition supports modernization of Building 10 (central plant) at the CDC Roybal Campus in Atlanta, Georgia. The objective is to provide complete design-build services to replace aging chilled-water plant equipment, improve electrical and controls infrastructure, maintain continuity of campus operations during phased execution, and deliver a fully commissioned and documented facility. a. Provide all design, engineering, management, supervision, labor, materials, equipment, testing, commissioning, training, and closeout services required to modernize the B10 chilled-water plant. b. Replace four existing 1,450-ton chillers with new 1,800-ton chillers and provide associated starters, controls, piping, isolation valves, refrigerant monitoring, and appurtenances. c. Replace nine existing cooling tower cells with eight new cells; provide structural modifications, walkways, maintenance access, valves, piping, and roofing work required for the new configuration. d. Replace primary chilled-water pumps, condenser-water pumps, associated starters / VFDs, and modify chilled-water and condenser-water piping as required for the new plant arrangement. e. Perform associated medium-voltage and low-voltage electrical upgrades, BAS / controls integration, structural work, fire protection modifications, and ancillary systems work identified in Attachment A. f. Provide phased execution that preserves campus operations; no more than two chillers may be removed from service at one time.