Steam boiler explosions, in theory and in pactice; . Fig. 33.—Corrosion. Thus corrosion may affect a single spot in a boiler, inwhich case a patch, if properly applied, Should make Il6 STEAM BOILER EXPLOSIONS. the boiler nearly as strong as when whole. A series ofweak spots near each other may so weaken a boiler asto produce explosion, as may any considerable area ofthin plate, although, when occuring in the stayed sur-faces of a fire-box, the metal may become astonishinglythin. A sketch of spots of corrosion is shown in , which represents the cause of an actual cause of e
Steam boiler explosions, in theory and in pactice; . Fig. 33.—Corrosion. Thus corrosion may affect a single spot in a boiler, inwhich case a patch, if properly applied, Should make Il6 STEAM BOILER EXPLOSIONS. the boiler nearly as strong as when whole. A series ofweak spots near each other may so weaken a boiler asto produce explosion, as may any considerable area ofthin plate, although, when occuring in the stayed sur-faces of a fire-box, the metal may become astonishinglythin. A sketch of spots of corrosion is shown in , which represents the cause of an actual cause of explosion may be either internal or exter-nal, and is produced internally by bad feed-water, andexternally by dampness or by water leaking from theboiler, either unseen or neglected. It is always dan-gerous to have any portion of a boiler concealed fromobservation. The effect of covering a part of a sheet subject to cor-rosion by solid iron, as by the lap of a seam, is shown inthe next figure, which also exhibits a common method. Fig. 34.—Corrosion at a Seam. of corrosion along a seam. The same effect is seen stillmore plainly in the succeeding figure, in which the pit-ting which so often attends the use of the surface con-denser is also well shown. THE METHODS OF DECAY. 117
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectsteambo, bookyear1887
