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Posted by Humphrey on July 15, 2004 at 18:41:18:
In Reply to: Steam Drum design posted by Chris on June 07, 2004 at 10:48:13:
Steam drum diameter and boiler plate wall thickness drive allowable design and operating pressure. The drums can be made any diameter, however, the plate thickness, front and rear head design as well as wall thickness all are computated to allow for a certain safe operating pressure.
Water level that is too high will aid carry over. Water level too low will, of course, possibly damage tube circuits depending on exact level and firing rates.
The safest place for water level under all steaming conditions is at normal water level---typically in the center of the steam drum.
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