Steam boiler explosions, in theory and in pactice; . hese boilers caused all thedestruction observed. It is always to be strongly recommended that regularand continuous feeding of hot water be practiced; andthat the greatest care be exercised by inspectors andthose in charge of steam-boilers in searching for andimmediately repairing dangerous defects. The last figure, preceding, is an excellent illustrationof the appearance of iron when thus corroded. At C,the crack was old and partly filled up with lime scale. The explosion of the upright tubular-boiler is usuallyconsequent upon some injury o
Steam boiler explosions, in theory and in pactice; . hese boilers caused all thedestruction observed. It is always to be strongly recommended that regularand continuous feeding of hot water be practiced; andthat the greatest care be exercised by inspectors andthose in charge of steam-boilers in searching for andimmediately repairing dangerous defects. The last figure, preceding, is an excellent illustrationof the appearance of iron when thus corroded. At C,the crack was old and partly filled up with lime scale. The explosion of the upright tubular-boiler is usuallyconsequent upon some injury of its furnace, either bycollapse or by the yielding of the tube-sheet to exces-sive pressure. The result is commonly the projectionof the boiler upward like a rocket, and is rarely accom-panied by much destruction of property laterally. Atypical case of this kind is that of an explosion occur-ring at Norwich, Connecticut, December 23, 1881, ofwhich the following is a brief account:* * Scientific American, Jan. 14, 1SS2- 148 STEAM BOILER EXPLOSIONS,. Fig, 52.—Explosion of an Upright Boiler. Fig. 53 represents the location of the boiler andengine immediately before the explosion. The explo-sion took place, as shown in figure by the yielding ofthe lower tube plate of the boiler. This boiler was three feet in diameter and seven feethigh. The boiler was made of five-sixteenths ironthroughout. It contained sixty tubes, two inches diam-eter, five feet long, which were set with a Prosser ex-pander, and were beaded over as usual. The upper tube-head wns flush with the top of the shell, and the lower,forming the crown of the furnace, was about two feetabove the grates and thebase of the shell, and was flangedupon the inner surface of the furnace. There was asafety plug in the lower tube-head, which was not meltedout, although, as is often the case when these plugs are THE RESULTS OE EXPLOSIONS. 149 so near the fire, a portion of the lower part of the fusiblefilling had disappeared.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectsteambo, bookyear1887
