1200PSI Steam Propulsion Plant Improvement Program Boiler Lay-Up Procedures Past,Present and Proposed Concepts.

摘要

The requirement for intermittent operation of Naval propulsion boilers requires that special attention be given to the problem of idle boiler care. Evidence has shown that improperly secured boilers are subject to very rapid deterioration from both waterside and fireside corrosion processes and that when these conditions are permitted to exist the expected results will be loss of boiler tubes and costly repairs. The importance of proper care as a preventive maintenance item prompted an investigation of the Navy's present procedures for the care of idle boilers. Two major recommendations have been made as a result of this work. One is the concept of fireside dehumidification and the other is the use of hydrazine as a boiler water oxygen scavenger.