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® WorleyParsons <br /> resources&energy <br /> 5.3.1.1 Operator Workstation <br /> The balance of plant DCS will include one operator workstation. The workstation will be <br /> equipped with one keyboard and one 19" LCD Flat Panel Monitor. The monitor will be <br /> located on the work desk provided in the Plant Main Control Room. <br /> 5.3.1.2 Printers <br /> One color inkjet printer will be provided and will be located on the work desk in the Plant <br /> Main Control Room. <br /> 5.3.2 DCS Processors, I/O Cabinets and Hardware <br /> Processors, power supplies, communication modules, input and output modules will be <br /> mounted in a freestanding cabinet with front access. Redundant circuits in separate <br /> raceways will provide 125 VDC power to the DCS processors. The operator workstation <br /> and printer will be powered from the plant UPS system. <br /> The system will be provided with 10 percent spare wired I/O and 10 percent spare slots in <br /> each cabinet at system shipment. <br /> Equipment and termination blocks will be identified either with laminated phenolic <br /> nameplates or stamped metal tags. <br /> 5.3.3 DCS Functionality <br /> The control system will show an overview and grouped or detailed information to assist the <br /> operator in required control actions. Functional logic diagrams or ladder logic diagrams <br /> will be provided to the DCS supplier. <br /> Motor control logic will be coordinated to offer consistent functionality for all balance of <br /> plant equipment. Likewise, the operator interface for such logic will also be consistent. <br /> Permissive displays will be provided for applicable motors and valves identifying all <br /> system interlocks. Permissive displays will be developed either as a paged display <br /> associated with a given graphic or a pop-up display. <br /> All alarm annunciation will be done in the balance of plant DCS. The sequence of events <br /> (SOE) function will have a resolution of not more than I millisecond and will be an <br /> integral part of the DCS. The CTG sequence of events will be synchronized with the same <br /> time stamp as the BOP or hard wired points to the BOP DCS to allow comprehensive SOE <br /> reports to be generated by the BOP DCS. <br /> 5.3.4 Graphics <br /> A maximum of ten process graphics with an ISA-based symbol set, 10 trend displays, and <br /> 10 permissive displays that show the status of system interlocks will be included in the <br /> Lodi Energy Center 3.5 -3 LEC AFC <br /> 071608 Rev.A <br />