IAPWS Technical Guidance Document: Phosphate and NaOH treatments for the steam-water circuits of drum boilers of fossil and combined cycle/HRSG power plants
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This document contains Cycle Chemistry Guidelines providing feedwater, boiler water and steam targets and limits for phosphate and caustic / sodium hydroxide (NaOH) treated drum boilers in fossil and combined cycle / HRSG power plants (PT and CT). Customization for each type of plant is provided.
This Technical Guidance Document was adopted by IAPWS in 2015, replacing the version of 2011.
The revision included a small number of minor updates and clarifications, and added guidance for
Heat Recovery Steam Generators (HRSGs) that start frequently and those that are required to fast start.
This Technical Guidance Document is the product of the
"Power Cycle Chemistry" (PCC) of the
International Association for the Properties of
Water and Steam (IAPWS).
This page updated September 19, 2016
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Phosphate and NaOH treatments