ARCHIVED REPORTS LEC APPLICATION FOR CERTIFICATION

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SECTION 2.0:PROJECT DESCRIPTION building as required by NFPA and local code requirements. The CTG unit will be protected by a carbon dioxide fire protection system. Hand-held fire extinguishers of the appropriate size and rating will be located throughout the facility in accordance with NFPA 10. The cooling tower will include a fire protection sprinkler system or monitor nozzles will be employed to provide fire protection for the tower. Section 5.5,Hazardous Materials Handling,includes additional information for fire and explosion risk, and Section 5.10,Socioeconomics,provides information on local fire protection capability. 2.1.15 Plant Auxiliaries The following systems will support, protect, and control the generating facility. 2.1.15.1 Lighting The lighting system provides personnel with illumination for operation under normal conditions and for egress under emergency conditions,and includes emergency lighting to perform manual operations during an outage of the normal power source. The system also provides 120-volt convenience outlets for portable lamps and tools. 2.1.15.2 Grounding The electrical system is susceptible to ground faults,lightning, and switching surges that result in high voltage that constitute a hazard to site personnel and electrical equipment. The station grounding system provides an adequate path to permit the dissipation of current created by these events. The station grounding grid will be designed for adequate capacity to dissipate the ground fault current from the ground grid under the most severe conditions in areas of high ground fault current concentration. The grid spacing will be calculated to maintain safe step and touch potentials caused by any type of phase-to-ground fault. Bare copper conductors and grounding rods will be installed below-grade in a grid pattern. Each junction of the grid will be bonded together by an exothermic weld. Ground resistivity readings will be used to determine the necessary numbers of ground rods and grid spacing to ensure safe step and touch potentials under severe fault conditions. Ground conductors will connect the ground grid to building steel,metal tanks, steel structures,mechanical equipment skid frames,and non-energized metallic parts of electrical equipment in accordance with national electrical code (NEC) requirements. 2.1.15.3 Distributed Control System The DCS provides modulating control, digital control,monitoring, and indicating functions for the plant power block systems. The DCS will provide the following functions: • Controlling the STG, CTG,HRSG,and other systems in a coordinated manner • Controlling the balance-of-plant systems in response to plant demands 2-30 SAC/371322/082340003(LEC_2.0_PROJECT_DESC.DOC)