A. Below the water level, where the feed water will not strike the heated plates.
Q. What causes priming of boilers?
A. Too high water, not steam space enough, dirty feed water, misconstruction of boiler, or engine being too large for its capacity.
Q. How can you keep boilers clean or remove scale from them?
A. By regularly cleaning them thoroughly, and by the use of compounds.
Q. If you found a thin plate in your boiler what would you do?
A. Patch it on the inside, first cutting out the damaged part.
Q. Why cut out the damaged part of sheet, when putting on a patch?
A. To allow the water to rest against the patch to protect it from the intense heat.
Q. What would be the result if the damaged part of sheet was not cut out?