. Electric railway journal . to forestall inter-ruptions. Duplicate feed lines are run to each normal operation water from the hot well is pumpedthrough a National heater of the open type by one or bothBlake feed pumps, city water being used only for make-upnecessities. Two other feed pumps and a Cochrane heaterformerly used in connection with the engine-driven plantare also located in the pump section of the boiler room,and either set of pumps may be operated upon either orboth sets of boiler-feed lines. The feed lines are equippedwith balanced valves controlled by floats in the he
. Electric railway journal . to forestall inter-ruptions. Duplicate feed lines are run to each normal operation water from the hot well is pumpedthrough a National heater of the open type by one or bothBlake feed pumps, city water being used only for make-upnecessities. Two other feed pumps and a Cochrane heaterformerly used in connection with the engine-driven plantare also located in the pump section of the boiler room,and either set of pumps may be operated upon either orboth sets of boiler-feed lines. The feed lines are equippedwith balanced valves controlled by floats in the heaters. Asthe heaters fill, the valves are automatically closed, throw-ing pressure back upon the pump governors and cuttingdown the rate of water input from the pumps. Oil fromthe engines which passes through the turbines into the hotwell is separated from the water of condensation by gravityand discharged through an overflow into the river. Thewater in the hot well is maintained at a depth of about 6 Upper Boiler Feed Line. Electric 24 Suction to Eiter Berkshire Improvements—Water and Exhaust Piping Plan of East Street Power Station, Pittsfield the generators, and the discharge of heated air from thelatter is into the basement, which is 12 ft. high and pro-vided with several openings into the engine room. Thecapacity of the plant was increased about 70 per cent fora given fuel consumption by the installation of the mixed-pressure turbines. ft., and the feed-water suction line enters the well nearthe bottom. By this means no trouble is experienced fromthe oil in the operation of the boilers. Service and firepump connections are made in the boiler room on the in-side of the city meter. The exhaust piping provides for the usual disposal of December 6, 1913.] ELECTRIC RAILWAY JOURNAL steam from pumps and auxiliary apparatus by connectionswith the feed-water heater lines, and a complete systemof heater overflow lines is provided. The exhaust fromthe low-pressure engin
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