AZ ROC Boilers, Steamfitting & Process Piping (C-4 CR-4) Practice Questions - Arizona ROC C-4 CR-4 Boilers, Steamfitting And Process Piping Examination Exam

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What is the primary operational function of a spray-tray deaerator installed in a commercial high-pressure steam boiler feed system?

To filter out total dissolved solids (TDS) and scale-forming calcium carbonates To strip dissolved oxygen and carbon dioxide gases from feedwater by heating it to saturation temperature To inject chemical water softeners and phosphates into the boiler drum To condense high-pressure flash steam into low-temperature domestic hot water

Correct Answer:

To strip dissolved oxygen and carbon dioxide gases from feedwater by heating it to saturation temperature

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