A practical requirement in cathodic protection management
Cathodic protection is a fundamental element for the safety and durability of buried metal infrastructure. In this system, the insulating joint plays a key role: it electrically isolates the sections of the pipeline and helps ensure the reliability of measurements and technical assessments of the cathodic protection system.
One of the main difficulties encountered in the field is verifying that the joint is functioning correctly after installation. For this reason, in addition to preliminary checks before installation, it is essential to understand the behaviour of the insulating joint and to monitor its condition over time.
Before installation, in fact, it is good practice to perform two fundamental technical checks on the insulating joint: insulation testing and dielectric strength testing. These tests help to qualify the component before installation and reduce the risk of misinterpreting the data collected during operation.
The role of the insulating joint in cathodic protection
The performance of the insulating joint depends on several construction factors: the steel specifications, the welding procedures, the assembly and the non-metallic materials used. The quality of these elements affects the electrical behaviour of the joint and its ability to maintain separation between the sections of the pipeline.
If an insulating joint is damaged, a critical issue may arise in the system. However, technicians may not always be able to identify the exact location of the fault or determine whether the insulating joint is functioning correctly.
For this reason, it is essential to know the condition of the insulating joint and continuously verify its proper operation. This need has given rise to G4C-PRO JOINT, the solution developed through a collaboration between Alfa Engineering and AUTOMA for monitoring the insulating joint. The system developed by Alfa Engineering and AUTOMA enables monitoring the joint and triggers an alarm in the event of possible damage or dielectric bypass, with the option to receive daily reports on any detected anomalies.
Alfa Engineering: expertise in insulating joint technology
For over 30 years, Alfa Engineering has been designing and manufacturing monolithic insulating joints for all types of applications, including Oil & Gas, drinking water, hydrogen and gas distribution. The company has long been studying the electrical characteristics of insulating joints and ways of monitoring their behaviour remotely.
This research has led Alfa Engineering to delve deeper into the electrical properties of insulating joints and, in 2021, to file a patent dedicated to the remote monitoring and control of their condition. The patent was shared with AUTOMA as part of a development project that led to the creation of G4C-PRO JOINT, an evolution of the G4C-PRO family.
G4C-PRO JOINT: key features
Monitoring the efficiency of the insulating joint
G4C-PRO JOINT expands the capabilities of the G4C-PRO family: in addition to the standard functions for monitoring cathodic protection, it adds monitoring of the insulating joint’s efficiency and remote management of its electrical condition.
Installation on existing insulating joints
The device can be connected to existing insulating joints and integrated into the measurement point via cables coming from both sides of the joint.
Direct installation on the joint in underground applications
In underground installations, G4C-PRO JOINT can be installed directly on the insulating joint and secured to the connection plates.
Remote management of the joint’s electrical condition
The solution allows for remote control of the opening and closing of the electrical connection at both ends of the joint, supporting verification and monitoring activities without the need for direct manual intervention on the component.
Alarm in case of dielectric bypass
Continuous monitoring of insulation efficiency triggers an alarm if a dielectric bypass or an abnormal condition attributable to joint degradation is detected.
Through WebProCat, the system can provide daily reports with the measured values and, when necessary, more detailed measurements to analyze the joint’s performance. The mapping feature also allows for the quick identification of any alarms associated with insulating joint malfunctions.
A collaboration born from field experience
G4C-PRO JOINT is the result of combining Alfa Engineering’s expertise in the design of insulating joints with AUTOMA’s know-how in the development of systems for the remote monitoring of cathodic protection. This collaboration makes it possible to incorporate into remote monitoring a component that is often critical to the reliability of measurements and the correct interpretation of the system’s condition.
In this way, a practical need identified through field experience has been transformed into a solution dedicated to monitoring insulating joints, integrated into the remote management of cathodic protection and designed to assist technicians and operators in diagnosing anomalies.
Contact our team to learn more about G4C-PRO JOINT.
General Director at Alfa Engeneering
Cataldo Ruppi has over 15 years of experience in the production of monolithic insulation joints. He began his career in production operations as Production Manager. He has developed a comprehensive understanding of the design and functionality of MIJs from both an electrical and mechanical perspective.
