Unanticipated boiler tube failures in steam plants are caused by corrosion and scaling. These failures are attributed wholly or in part to inadequate control of boiler water or steam quality, specifically the maintenance of excessive levels of boiler water impurities, poor application of internal chemical treatment, and inadequate monitoring. As a result, a new set of boiler feed and drum water concentration limits together with a monitoring and control program was developed for boilers operating with demineralized or desalinated water. This program not only improves operating efficiency by minimizing manpower requirements, but it also assures steam plant operating reliability.

Subject
Acids, Water, Alkalinity, Condensates, Sulfites, Acidity, Feedwater, Amines, Boilers, Carbon dioxide, Oxygen, Steam, Oil
Keywords:
carbon dioxide, Oxygen, ammonia, oxygen scavengers, neutralizing amines, corrosion, scaling, guidelines, boiler feedwater, boiler water
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2004
Association for Materials Protection and Performance (AMPP)
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