Data aggregation using historians for informed decision making

Historian systems have become increasingly popular throughout various industries for their ability to provide operations managers with the data needed to operate and manage their assets efficiently. In the first of two historian articles, we look at what a data historian is, the different types of historians available and some of the hardware requirements.

Using PLCs in cathodic protection systems

Corrosion of steel and reinforced concrete in structures such as bridges, jetties, shipping vessels and pipelines can lead to catastrophic failures if not maintained correctly. Employing the use of an appropriate corrosion mitigation method will reduce damage to the structures, increasing their operating life and lowering maintenance costs. Impressed current cathodic protection systems are one of the most effective methods of mitigating corrosion in metal and concrete reinforced structures, however these systems can be complex so must be designed and implemented correctly.

Reducing risks and increasing SCADA network reliability

In previous articles, we looked at different types of networks, security, redundancy, cable types and how to best leverage your network. In this article we continue to explore crucial aspects of SCADA networking, including environmental risks and their impact on reliability, as well as some different networking product options.

Process and change visibility using Change Management Systems

A Change Management System provides visibility of programmable automation equipment within a process facility. If amendments or modifications to a process are not managed correctly, the current device program or process configuration can be compromised, resulting in costly downtime to the plant, potential damage to equipment along with safety and environmental impacts. In this article, we will look at the benefits of implementing a Change Management System.

Combining network control and energy management for power-critical infrastructure

Managing a power-critical infrastructure asset can be challenging, especially when energy management and a reduced carbon footprint also need to be considered. Typically, such a set-up would require the implementation of two separate systems: a Network Control System (NCS) to ensure reliable power supply is maintained during mains power failure and an Energy Management System (EMS). Having separate systems reduces functionality and increases costs, however these challenges can be overcome by considering an integrated solution.

Selecting cabling and leveraging SCADA networks

In a previous article, we started looking at SCADA communication networks. We explored the differences between industrial and corporate networks, converged networks, core and edge switches along with redundancy and security considerations. In this article we continue the discussion, looking at the differences between fibre optic and copper communication cabling and how the network can be leveraged.

Networks and Switches: Making the most out of your SCADA

Communication networks and associated network switches are key components in Supervisory Control and Data Acquisition (SCADA) systems. Communication networks can vary in complexity, size, the type and number of equipment being monitored, the level of security required, the network architecture, latency and bandwidth, along with data reporting requirements. In this article, we look at network architecture, redundancy, security, converged networks and switch technology, as well as the differences between industrial and corporate networks.