Project details

• Year: 2018
• Customer: Georgetown University
• Narrative: This project was prerequisite work to support the expansion of Georgetown Universities MedStar Hospital. Because of the new Surgical Pavilions, Georgetown University had to upgrade their Central Utilities Plant’s (CUP) heating and colling capacity. We mobilized in September ’18 and started the task of replacing the CUP’s 12” sanitary main discharge line. This required excavating and shoring in proximity of four out of the nine existing water sourced chillers and pumps in the CUP, while they were operational. At the time, the four chillers represented 10,000 tons of the CUP’s cooling capacity. Our plumbers worked closely with GU’s staff to maintain access and operability of the chillers and pumps 24/7. They also redirected a lot of blowdown lines and drains throughout the CUP for this phase of the project. We performed modifications to the interior chilled water system (CHW). The mods included upsizing the existing CHW primary pump headers and mains to sizes between 24” - 36” NPS. Installation of four 300HP double suction pumps, one was a replacement and three were additional to the system. Replacing a 2,000-ton chiller with a 3,750-ton chiller, which at the time was the largest one available and the first with 1233zdE refrigerant in Washington D.C. All of this was done while the CUP remained in operation. We installed one 100,000lbs/hr. Boiler. We had to rig it into the building