GTS 1 Six Monthly CP Survey – First Half of 2025

Project Overview

JOCALSH INTERNATIONAL was contracted by Nigeria LNG Limited (NLNG) to carry out a comprehensive Six-Monthly Cathodic Protection (CP) Survey for the GTS 1 pipeline infrastructure. This critical integrity assessment was designed to evaluate the performance of existing CP systems and ensure optimal protection against external corrosion on the gas transmission lines.

The survey forms part of NLNG’s routine asset integrity strategy, focusing on maintaining pipeline safety, operational reliability, and compliance with industry and regulatory standards. Our technical team executed the survey across multiple zones along the GTS 1 corridor, employing advanced inspection methodologies and data acquisition tools.

Services Provided

• Planning and scheduling of CP survey activities across pipeline sections

• On-site data collection using calibrated half-cell equipment

• Measurement of pipe-to-soil potentials and identification of CP anomalies

• Analysis of CP effectiveness and comparison against NACE compliance thresholds

• Technical reporting with actionable recommendations for system optimization

• Close collaboration with NLNG’s integrity team throughout the project duration