IEC TS 61370 : 1.0

Table of Contents

FOREWORD
1 Scope
2 Abbreviated terms
3 Need for steam purity control
   3.1 Corrosion and loss of efficiency or output
   3.2 Categories of plant
        3.2.1 Reheat and non-reheat plants
        3.2.2 Primary source of energy
   3.3 Operating regimes
        3.3.1 Start-up
        3.3.2 Volatile chemical-based treatments
        3.3.3 Solid chemical-based treatments
4 Sampling and analysis
   4.1 Sampling locations
   4.2 Measured parameters
        4.2.1 Cation conductivity
        4.2.2 Sodium
        4.2.3 Silica
   4.3 Significance of parameters
        4.3.1 Cation conductivity
        4.3.2 Sodium
        4.3.3 Silica
        4.3.4 Chloride
        4.3.5 Sulphate
        4.3.6 Iron and copper
        4.3.7 Alternative additives
Annex A (informative) Guideline values
Bibliography
Figure 1
Tables

Abstract

Defines the importance of the chemical characteristics of steam supplied to steam turbines and the need to prevent corrosion and deposition in steam space, in order to minimize the risk of turbine corrosion failures or loss of efficiency or output. It applies to turbines of all electrical output rating and any exhaust condition, i.e. condensing or backpressure.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 5