What do we propose?
Use turbidity measurement for monitoring trends of particulate corrosive products in the water-steam cycle.
How do we do it?
With the SWAN AMI Turbiwell Power analyzer equipped with a light source according to ISO 7027 (860 nm).
Where do we do it?
In any installation with water boiler and/or steam turbine
What do we get?
The correlation of turbidity with iron/copper depends on several particle properties. Such as particle size and particle size distribution, and these properties are particular to each plant and may change with time. Therefore, turbidity measurement cannot replace an accurate analysis. Since the conversion from turbidity to concentration will always have a significant error.
However, as a trend analysis and for an estimate of approximate concentration levels (few μg/kg, or some 100 μg/kg, etc.), on-line turbidity measurement can be a useful tool. It tells us where corrosive products are found and how they are distributed. This will ultimately support the operation and maintenance strategies for each plant.
Related articles
Turbidity measurement as a trend for corrosion products in the water-steam cycle
Monitoring of corrosive products Lukas Staub, Michael Rziha and Marco Lendi. VGB PowerTech 3|2019 See here the original article: “Turbidity measurement as trend monitor for
