Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 177
ing of the 164 THE LOCO M O TIV E April. plate. As scale increases in thickness, a point is reached at which itceases to be merely a cause of added fuel expense and becomesa hazard as well. What this dangerous thickness is depends onthe nature of the scale. Sometimes scale in dangerous amountsdoes… … Figure 2—An example of an extreme bulge because of scale. which gradually settles on the heating surfaces. In either the solid orthe loose form, this foreign substance within the boiler may retard theheat transfer to such an extent that overheating occurs. Then thepressure tends to force the plate…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
