20 February 2015
ACEC/MD has presented Henry Adams with an Honor Award for the Johns Hopkins Bayview Medical Center Generator Plant. The project, completed in 2014, has garnered notoriety for being one of the first EPA Tier 4i plants in the state of Maryland.
The project includes three (and ultimately four) 1825kW Prime Rated 13.2kV diesel generators, designed for EPA Tier 4i emissions standards in a central generator plant building. The system is also capable of paralleling with the incoming campus utility service to assume load up to its capacity. Due to site restraints, the system was designed to generate at 13.2kV and distribute to the various hospital buildings across campus. Henry Adams developed this solution with JHU to replace its previous concept that required massive duct banks and feeders that would have created numerous site and cost issues. Paralleling switchgear distributes the 13.2kV using a partial campus emergency loop that serves two rooftop double-ended 480/277V substations. The substations back feed 17 existing Automatic Transfer Switches serving Life Safety, Critical, and Equipment systems.
The generators were connected to fuel tanks modified in the central Boiler Building to accommodate the Ultra Low Sulfur Fuel required by the EPA Tier 4i emission standards. Emission requirements required a separate Diesel Emissions Fluid storage and distribution system to serve the engine mounted SCR emissions modules that scrub the exhaust.