Table 6 - Generator Reliability Data Unit Forced Unit Size Unit Outage MTTF MTTR Scheduled Maintenance Group (MW) Type Rate (Hour) (Hour) Weeks per year ------------------------------------------------------------------------- U12 12 Oil/Steam 0.02 2940 60 2 U20 20 Oil/CT 0.10 450 50 2 U50 50 Hydro 0.01 1980 20 2 U76 76 Coal/Steam 0.02 1960 40 3 U100 100 Oil/Steam 0.04 1200 50 3 U155 155 Coal/Steam 0.04 960 40 4 U197 197 Oil/Steam 0.05 950 50 4 U350 350 Coal/Steam 0.08 1150 100 5 U400 400 Nuclear 0.12 1100 150 6