Modern ICCP: silicon-iron / mixed-metal-oxide anodes + DC rectifier; ON/OFF criterion ~-850 mV vs Cu/CuSO4; instant-off potential measurement removes IR-drop; protects pipelines / ships / oil-platforms.
Modern ICCP: silicon-iron / mixed-metal-oxide anodes + DC rectifier; ON/OFF criterion ~-850 mV vs Cu/CuSO4; instant-off potential measurement removes IR-drop; protects pipelines / ships / oil-platforms.