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Practical Cathodic Protection Paramaters
Resistivity and Electrode Resistance
achieved alloys aluminum ampere hours anode metal anode resistance backfill ballast buried cable cathodic protection cause cent circuit coating concrete connection considerable consumption copper sulfate current density current flowing current required diameter direct current distance driving voltage earth effect elec electrical electrolyte engineering FIGURE galvanized graphite groundbed half cell high resistivity hull impressed current protection increase installation insulating ions iron jetty length low resistivity magnesium magnesium anodes meter method negative occur ohm cm operate output overprotection Photo reprinted piles pipe metal pipeline placed plate platinized titanium platinum polarization potential measurements problem reduce reference electrode reprinted with permission sacrificial anodes salt salt bridge sea water ship shown in Fig silver chloride silver chloride electrode soil spread of protection sq ft steel structure surface swing tank techniques tion titanium anodes transformer rectifier tubes usually variations welded wire zinc anodes