DEFSTAN 02-781/2(2009) : 2009

Foreword
1 Scope
2 Warning
3 Normative References
4 Definitions
5 Abbreviations
6 General Advice
7 Water and Passivation Treatment Chemicals
   7.1 Water Types and Usage
        7.1.1 Seawater Quality
        7.1.2 Fresh Water Quality
   7.2 Passivation Treatment Chemicals
8 Passivation and Film Maintenance Treatment Options
9 Biocide Treatment (Chlorination)
10 Filtration
11 Corporate Knowledge
   11.1 Ferrous Sulphate
   11.2 Azole Copper Corrosion Inhibitors
   11.3 Sodium Dimethyldithiocarbamate (SDD)
   11.4 Seawater
   11.5 Fresh and Potable Water
   11.6 Mexel 432
   11.7 Corrosion Monitoring
Annex A - Corrosion Resistance of Copper Alloys in the
          Marine Environment
Annex B - Typical Guidelines for Maximum flow velocities
          of Copper-Nickel Alloys in Seawater
Annex C - SRB Enumeration (Serial Extinction Dilution
          Technique)
Annex D - Seawater Quality Parameters

Specifies guidance and treatment requirements for the mitigation of corrosion of copper alloy materials in seawater system pipework, coolers and heat exchangers aboard surface and submarine fleet vessels during build, refit, fleet time maintenance/upkeep operations and during the operational cycle of the vessel.