st clair memorial hospital 1

Constructed as a state of the art Emergency Department for St. Clair Hospital in Pittsburgh PA, the 18,000 square foot Addition and Alterations project included new mechanical and electrical design solutions employed for the project to enhance the environmental quality and safety of the staff and patients. The HVAC system includes strategies intended to safeguard the occupants during the unexpected occurrence of a release of infectious agents through carefully designed infrastructure and operational sequences initiated by the emergency staff or via the building automation system. The HVAC systems amenities exceed current Department of Health Guidelines enabling the facility to readily adapt to anticipate mandates as the delivery of health care evolves in the future. The new Emergency Department includes Standard Treatment / Exam Rooms, Pediatric Treatment / Exam Rooms, Fast Track Rooms, as well as an Airborne Infection Isolation Room.

The project currently under construction includes the expansion of the St. Clair Hospital Surgical Suite and includes a new 3800 square foot Surgery Addition. A significant goal of the program is the development of modern operating room HVAC concepts intended to enhance the thermal comfort of the surgical staff and aid in the control of infectious agents. Special HVAC systems are included in the design for the control of temperature and relative humidity allowing an expanded range for the Operating Room environment. Of particular importance is the significant reduction in space temperature and relative humidity requested by the surgical staff to counter the thermal effects of the extensive gowning requirements. Nontraditional dehumidification systems provide an effective solution. The infectious agent control measures include a two stage ultraviolet germicidal irradiation (UVGI) system in each of the air distribution systems. The UVGI systems are intended to inhibit mold spore production and fouling at the cooling coil/drain pan assembly for improved long term energy and maintenance reduction; the system also provides "fly-by" irradiation of airborne pathogens.

Another key goal of the project is the replacement of the aging HVAC system presently serving a large portion the existing Surgical Suite, including five (5) existing Operating Rooms, as well as the existing Pre-Op Holding Area and PACU. A careful replacement and phasing strategy was established by the design team and integrated with the construction of the new Surgery Addition to maintain the critical surgery functions of the facility while upgrading the environment of the existing areas consistent with the new surgical areas.