Analisis Perbandingan Ekonomis Pengendalian Korosi Dengan Menggunakan Metode ICCP (Impressed Current Cathodic Protection) dan SACP (Sacrificial Anode Cathodic Protection) Pada Proyek Pipeline Gas Transmisi Gresik-Semarang
Abstract – Corrosion is often occurred on Gresik-Semarang pipeline gas transmission project. The corrosion type is pritting or well corrosion. Pitting corrosion causes pipe cavitated. So, it becomes a disadvantageous material if there is no prevention. One method to prevent corrosion is by using protection cathodic system. The system is divided into two kinds, i.e ICCP (impressed current cathodic protection) and SACP (sacrificial anode cathodic protection) methods. The first step taken started with technical requirement continued with economical requirement. The result of both methods is then compared to find the influenced value of each method in corrosion control. The final result is ICCP method require 36 sets of TI MMO anodes, 300 m cable in length, negative as well as positive return, with economical cost of IDR 7,929,501,030. SACP method requires 4538 magnesium anodes and 144 test station boxes with economical cost of IDR 8,898,206,625. So it can be concluded that cathodic protection with ICCP method is chosen as the most efficient method to apply in Gresik-Semarang pipeline gas transmision project.