. Railway mechanical engineer . al Methods of PreventingScale Formation and Corrosion from Bad Water BY GEORGE AUSTINGeneral Inspector Boilers, Atchison, Topeka & Santa Fe F(.J»KMATION of mud or salts or both on the water sideof the tube sheet of a locomotive boiler covering thecopper flue ferrules, a film of slime between the fire-box plates and the w-ater, or water in the boiler heavilycharged with suspended matter, or scale formation, causesoverheating and leaking. It may as well be said at the startthat overheating is the principal agent, and other causesare accessory. The first indication
. Railway mechanical engineer . al Methods of PreventingScale Formation and Corrosion from Bad Water BY GEORGE AUSTINGeneral Inspector Boilers, Atchison, Topeka & Santa Fe F(.J»KMATION of mud or salts or both on the water sideof the tube sheet of a locomotive boiler covering thecopper flue ferrules, a film of slime between the fire-box plates and the w-ater, or water in the boiler heavilycharged with suspended matter, or scale formation, causesoverheating and leaking. It may as well be said at the startthat overheating is the principal agent, and other causesare accessory. The first indications of flues and some timesother parts being near the leaking point are small lightcolored beads of sodium salts, mixed with other solids, ad-hering to the edge of the flue beads. Although flues aretight in the holes, there are small crevices through whichthe slime works its way and the moisture quickly evapor-ates on the hot plate, leaving a dry hard deposit, that tem-porarily plugs up the hole it leaked from. In most cases. Side Sheet Corroded by Bad Water the engine will make another trip; in some districts it willnot do so, without leaking pretty badly or failing. Aknowledge of local conditions should and usually does gov-ern the kind of work, if any, to be done on flues, showingthose pre-leaking indications. The remedy, of course, is toremove the scale which has formed on the water side. Towait until a leak .starts is to wait until some damage is caused by overheating damage the parts affected, norcan repairs be made without further injury, that is, nearlyevery time flues are worked, their life is shortened. There-fore, on account of overheating causing the necessity for re-pairs, our energies should be directed to keeping the boilerclean and preventing overheating. Feed waters heavily charged with incrusting solids willform scale among the flues and sta\bolts where we cannotget at it to wash it off. We couldnt wash it off if we didget at it; it must be knocked o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
