U.S. Department of Veterans Affairs

VA Medical Center Jack C. Montgomery Chiller Plant Upgrade

MUSKOGEE, OKLAHOMA

35 North provided cost estimating services for this project, which included a phased replacement of three chillers and six cooling towers for Building 52 on the Jack C. Montgomery campus.

One chiller, paired cooling tower, and all the support systems were installed as a unit and the second chiller and cooling tower replacement did not begin until the previous chiller system replacement was operational and on line. The pumps were replaced for the chillers and the pipe system modified to the new configuration in sequence with each chiller system replacement. A catwalk and steel structure was constructed around the cooling towers to correspond with the phasing, and a new roof was provided to cover approximately 10,728 SF.

Furthermore, the scope included the removal of two MV Substations and replacing them with two 15kV Switch/2,000kVA transformer/3,000Amp 480/277 Volt Substation Switchgears. Two Motor Control Centers were removed, in phases, with temporary starters provided as necessary, and replaced with three 800Amp and one 400Amp 480/277 Volt panelboards. Motor control utilized a combination of remote VFDs and combination motor starters. The fluorescent lighting was removed in the gear and chiller areas and replaced with LED lights, as well as eight LED pole lights added to the cooling tower platform.

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