12-18: Polymer Detection in High Halogen Power Plant Cooling System ApplicationHigh cycle operation, highly variable make up water chemistry, and intermittent halogenations: all these factors make power plant cooling systems some of the most challenging to manage. Proper polymer monitoring allows one to understand true demand factors versus other artifacts that might negatively impact control. This paper discusses how high level halogen applications should be managed to provide optimal polymer control. Lab data will be

The recommendations are applicable for Natural and Mechanical Draft cooling towers

heat has been dissipated primarily by once-through water from natural lakes and rivers

reuse of non-potable water from liquid effluents has been used as a make-up feature in cooling towers

A large semi-closed cooling water system was created ten years ago and since has had aggressive corrosion attack particularly on carbon steel surfaces

When a metal

To tackle this problem

and the specifications for traditional lightning protection systems installed on water-cooling towers

which need to be replaced after around 30 years

After a brief overview of the analytical model

NWD can be used as all wet cooling tower by using wet/dry lanes as wet sections

One of the most difficult chemistry parameters to control in a cooling water system is Free Halogen levels

More important than solids separation efficiency