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27. Tom Glass forecasts electrical demand for the Flatlands Public Power District (FPPD). The FPPD wants to take its Comstock power plant out of service
27. Tom Glass forecasts electrical demand for the Flatlands Public Power District (FPPD). The FPPD wants to take its Comstock power plant out of service for maintenance when demand is expected to be low. After shutdown, performing maintenance and getting the plant back on line takes two weeks. The utility has enough other generating capacity to satisfy 1,550 megawatts (MW) of demand while Comstock is out of service. Table 8.5 shows weekly peak demands (in MW) for the past several autumns. When next in year 6 should the Comstock plant be scheduled for maintenance? TABLE 8.5 WEEKLY PEAK POWER DEMANDS AUGUST SEPTEMBER OCTOBER NOVEMBER Year 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2,050 1,925 1,825 1,525 1,050 1,300 1,200 1,175 1,350 1,525 1,725 1,575 1,925 2 2,000 2,075 2,225 1,800 1,175 1,050 1,250 1,025 1,300 1,425 1,625 1,950 1,950 3 1,950 1,800 2,150 1,725 1,575 1,275 1,325 1,100 1,500 1,550 1,375 1,825 2,000 4 2,100 2,400 1,975 1,675 1,350 1,525 1,500 1,150 1,350 1,225 1,225 1,475 1,850 5 2,275 2,300 2,150 1,525 1,350 1,475 1,475 1,175 1,375 1,400 1,425 1,550 1,900
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