EN ISO 16784-2:2008

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
  5.1 Water characteristics
  5.2 Preparation of synthetic test waters using mother
      solutions
6 Apparatus
  6.1 Temperature measurement
  6.2 Circulation-rate monitor
  6.3 Make-up, evaporation and blow-down measurement
  6.4 Cooling tower
7 Test method
  7.1 Procedure
      7.1.1 Cleaning of the test assembly
      7.1.2 Test tube preparation and pre-treatment
      7.1.3 System water content
      7.1.4 Procedure to fill the cooling water system
      7.1.5 Heating the test tubes
      7.1.6 Flow rate
      7.1.7 Blow-down and half-life
      7.1.8 Biocide treatment
      7.1.9 Make-up water for cooling-tower use
  7.2 Determination of analytical and control parameters
  7.3 Test data reporting
  7.4 Test termination
8 Assessment of results
  8.1 Recording of cooling water quality
  8.2 Treatment of the test tubes
  8.3 Assessment of results on deposition and fouling
  8.4 Assessment of results on corrosion
9 Test report
Annex A (informative) - Test data sheet on the performance
                        of cooling water treatment programmes
Annex B (informative) - Further information on some methods
                        of measurement and test
Bibliography

ISO 16784-2:2006 applies to corrosion and fouling in industrial cooling water systems ISO 16784-2:2006 describes a method for preliminary evaluation of the performance of treatment programmes for open recirculating cooling water systems. It is based primarily on laboratory testing but the heat exchanger testing facility can also be used for on-site evaluation. ISO 16784-2:2006 does not include heat exchangers with cooling water on the shell-side (i.e. external to the tubes).