Overview of Pre-Boiler Section Waterside Problems

Problems that originate in the pre-boiler section of HP boiler plants are often the cause of operational problems further downstream in the system these problems must be controlled with appropriate internal treatments. Although programs can be devised to deal with almost all types and qualities of FW, it is a fundamental requirement that the water quality be as consistent as practically possible. 

Trying to routinely compensate for variable FW quality is a futile exercise wide swings in water chemistry inevitably occur, and severe boiler waterside problems will likely result under these operating conditions. 

There are three primary factors whereby FW system problems may either originate or manifest themselves  

Each of these problem sources requires effective operational control and is discussed in the following sections. 

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