. Railway mechanical engineer . ble to do this with the present treating facilities, excel-lent success has been obtained by the introduction of soda ashdirect into the engine boilers through the washout holes aftereach washout, in amounts determined by the chemist. Onaccount of the large amount of sludge and mud formed inthe boilers, foaming conditions result, but this has been keptat a minimum and no serious trouble has been anti-foaming compound prepared by die companys chem-ist is used to take care of this feature. Before soda ash wasused in this manner the engine failures o
. Railway mechanical engineer . ble to do this with the present treating facilities, excel-lent success has been obtained by the introduction of soda ashdirect into the engine boilers through the washout holes aftereach washout, in amounts determined by the chemist. Onaccount of the large amount of sludge and mud formed inthe boilers, foaming conditions result, but this has been keptat a minimum and no serious trouble has been anti-foaming compound prepared by die companys chem-ist is used to take care of this feature. Before soda ash wasused in this manner the engine failures on one division fromboiler troubles were per 100,000 engine miles, but theywere reduced to in 1915, when the soda ash treatmentwas in effect. Only five failures due to foaming occurredduring the same year, a lack of compound being responsiblefor three of the five. Records show that continuous improve-ment is being made with the increased familiarity in the figures shown it is not difficult to determine the. Scale, Less Than 1/16 In. Thick, from Treated Water advantages secured. The life of tubes has been increasedfrom 50 to 300 per cent. Engine failures on one divisionhave been decreased from 1,435 in 1910 to 202 in 1915,resulting almost entirely from the decrease in boiler failuresin consequence of the use of soda ash and treated water. Onthe same division the boilermaker force has been reducedfrom 17 to 7 at the terminal roundhouse, a saving of $15,000per year in this item alone. At the Sedalia, Mo., power plant, where the water istreated for five Babcock & Wilcox double-deck water tubeboilers of 275 hp. each, 715 of the 840 four-inch tubes havebeen in continuous service for the past eleven years on treatedwater. On account of the shortage of boiler capacity andthe unavoidable heavy duty, there has been insufficient timeto shut down these boilers for washing out and two of themran for five years between washouts, at the end of which timethe scale on the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
