Document zQb9omy2MQngdOLDgzv2x5D4R

Motors driving fuel nil pumps with twin strainer between. Caught in a snowstorm are the two Elliott 500-hp, 440-rpm, vertical weather-protected motors which drive the circulating water pumpsjor unit .'Vo. 7. The location is at the riser. pressor is available as a spare. Compressed air for actuating the numerous pneumatic control devices is supplied by motor-driven carbon ring compressors. Due to the outdoor design of the station, the heating and ventilating problem is very much simplified. The control room and the office and service building offices and laboratory are air conditioned. Separate fans provide forced ventilation to the enclosed spaces in the turbine basement below the operating deck, the pulverizer room, and the feeder and burner room floor. Heating in these spaces is provided by unit heaters taking steam normally from the extraction steam line to the deaerator or from an oil-fired package boiler when the steam generating unit is shut down. Normal operation of screens and wash pumps at the intake is time-clock controlled with supplementary starting ; actuated by a pressure drop across the screens. Abnormal ",iy make-up water required for frequent start-ups is provided -I!* one 40,000-!b-per-hr evaporator for each unit and a 000-gal condensate storage standpipe, shown by the photographs on pages 4 and 5 the "''jJPtt open-type deaerating feedwater heater is installed gjjj|tHitdoors above the turbine-generator unit. The unit "j^nsists of a horizontal trav-type deaerating heater with jffltemal spray-type vent condenser, mounted and ^supported on a horizontal storage tank which provides pproximately ten minutes of storage at maximum "ntinuous boiler output at normal level. The deaerating 1bX. SPRING 1955 Above -Closeup of Elliott C-W motor driving traveling water si teens. Below -20-hp, jGOO-rpm motor driving eleaiwell water pump outside water treatment budding.