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® WorleyParsons <br /> resources&energy <br /> • Ventilation fans and electric unit heaters for boiler feed pump enclosures (when such <br /> enclosures are specified in Section 1). <br /> • Multiple HVAC units per PDC (supplied as part of the package) <br /> • Ventilation fans and unit gas heaters for the turbine building and auxiliary boiler <br /> building as required <br /> For indoor areas not normally occupied, the heating system will be capable of <br /> maintaining a nominal indoor temperature of 50°F at the HVAC design outdoor <br /> conditions. Heating design will be based on the plant being shut down with no solar <br /> warming. <br /> HVAC systems serving the control room, maintenance shop offices, lab areas, and <br /> administration areas will be designed to provide comfort levels for extended human <br /> occupancy. HVAC for other areas will be designed in consideration of equipment and <br /> environmental requirements, including dust control. Air velocities in ducts and from <br /> louvers and grills will be low enough to prevent unacceptable noise levels in areas where <br /> personnel are normally located. <br /> Air-conditioning will include both heating and cooling of the filtered inlet air. Air filters <br /> will be housed in a manner that facilitates removal. The filter frames will pass the air <br /> being handled through the filter without leakage. Ductwork, filter frames, and fan <br /> casings will be constructed of galvanized mild steel sheets stiffened with galvanized <br /> mild steel flanges. Ductwork will be furnished and installed per UMC 1997. Duct joints <br /> will be leak tight. Grills and louvers will be of adjustable metal construction. <br /> Fans and motors will be mounted on antivibration bases to isolate the units from the <br /> building structure. Exposed fan outlets and inlets will be fitted with guards. Wire guards <br /> will be specified for belt-driven fans and arranged to enclose the pulleys and belts. <br /> Modules will be ground mounted (for ease of maintenance) in locations where they are <br /> least likely to be damaged, cause inconvenient obstruction, or be exposed to gasses or <br /> odors. <br /> HVAC systems will meet requirements of NFPA 90A, standard for installation of air <br /> conditioning and ventilating systems. An air balance will be part of the scope. <br /> 3.9 Fuel System <br /> 3.9.1 Fuel Gas <br /> The fuel gas system treats and delivers fuel gas to equipment at the desired conditions. <br /> The scope of the fuel gas system extends from the interface with the utility natural gas <br /> connection at the plant property boundary to the gas interfaces for the CTG. The fuel <br /> gas system will be designed to accommodate the reciprocating gas compressors and fuel <br /> Lodi Energy Center 3.3 - 12 LEC AFC <br /> 071508 Rev.A <br />