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Tenaga Nasional Berhad 58 Annual Report 2009Operations ReviewGeneration (Cont’d.)Graph 6:Equivalent Availability Factor By StationTNBCAMKNYRSGPKMNJGPJGLGRPGPDPAKACB90.4990.0191.0771.593.2592.9693.9593.5883.1182.0194.6195.7992.0395.7693.5395.2192.3690.9389.5191.9795.9395.57%0 20 40 60 80 100Plant Equivalent Unplanned Outage Factor (EUOF)TNB Generation has recorded better EUOF than the World Classindustrial benchmark of 4% for four consecutive financial years. TheEUOF achieved for FY2009 was 2.90%. Graph 8 shows the EUOFtrends from FY2005 to FY2009.Overall, EUOF was excellent, whereby 80% of the stations achievedEUOF of less than 4%. The exceptions were Sultan Azlan Shah PowerStation, Manjung and Sultan Mahmud Power Station, Kenyir whichrecorded high EUOF due to the mechanical failures of the boiler andturbine bearing respectively). Graph 9 shows the EUOF achieved by allpower stations for FY2009. Details by NERC cause codes for theunplanned outages are as indicated in Graph 10.FY2009FY2008Graph 7:Trending of Equivalent Availability Factor’0990.49’0890.01’0791.15’0690.20’0585.600 20 40 60 80 100%FY2009FY2005-FY2008