Cathodic Protection Of Pipeline Corrosion With A Galvanic Anode

ABSTRACT

 Cathodic Protection of Pipeline Corrosion with Galvanic Anode was carefully and successfully carried out. A detailed soil analysis within the premises of the Work and Services Department of the Michael Okpara University of Agriculture Umudike was carried out to establish the presence of conditions necessary for corrosion to take place within the area(s) asterised. The quantity of Anode required to protect a 2m long 4mm diameter pipe was calculated and achieved. The design parameter for the developed cathodic protection system were; total current; anode current; protection voltage; soil PH; and the soil resistivity test. At the end of ten weeks, a potential readings -1080 mV was obtained; pipe protection current was 0.0076mA; Anode current of 0.0096mV; the soil PH and soil resistivity test values(s) were 5.77 and 21.51 2m respectively. The protection potential of (-890mV to -l080mV) obtained are in the range of (-850mV to - 11 50mV) for a protected mild steel pipe. From the results, it can be concluded that, SACP is an effective and efficient means of corrosion control. The bill of quantity of this work is put at #130,200:00K (One hundred and thirty thousand, two hundred naira only).