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HRSG – Auxiliary Equipment and Systems

Learning Objectives

  • Recall the purpose of the following systems:
    • Supplementary firing
    • Bleed Air
    • Deaerator
    • Attemperator
    • Sampling
    • Dosing
    • Selective Catalytic Reduction (SCR)
    • CO catalyst
    • Nitrogen
  • Identify the general location of the following systems:
    • Supplementary firing
    • Deaerator
    • Selective Catalytic Reduction (SCR)
    • CO catalyst
  • Relate the operating conditions in which supplementary firing would be impactful
  • Describe the mechanism by which deaerators fulfill their purpose
  • List some qualities for which analyses are frequently performed in the steam/water cycle
  • State why SCR systems and CO catalyst systems have been put in place
  • Relate what operating conditions a nitrogen system would be used in

Available in English

50 Minutes

When you complete this lesson, you will be able to identify some auxiliary systems that may be found in a HRSG and recall their purpose and benefit to the unit.