What is a Safety Instrumented System?

A Safety Instrumented System (SIS for short)  is used in many process plants to ensure continued safe operation of the process. In case of any disturbance that is likely to result in an unwanted incident the SIS automatically brings the process to a safe state and prevents loss of life, asset damage and environmental damage. For process plants that handle hazardous, toxic, explosive or other similar materials, Safety Instrumented Systems  prevent unwanted incidents from happening. What is a Safety Instrumented System? In an earlier tutorial, we explained what a Safety Instrumented Function (SIF for short) does. In case you have not read it, we encourage you to do that now. A Safety Instrumented System can be thought of  simply as a collection of Safety Instrumented Functions. Take a look at the diagram shown here. It shows three Safety Instrumented Functions (SIF1, SIF 2 and SIF 3). All of these safety …

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ICS Security training course gets advanced module

Abhisam is pleased to announce that the popular ICS security training course, which is available as an e-course online, will now have an advanced module that can be accessed by all current learners and GOLD members. This will have many sub modules such as concepts of Kill Chains, the MITRE ATT&CK framework for ICS, Honeypots for Industrial Automation and Control systems and more. Cybersecurity is a growing concern for all companies and organizations worldwide. However not many people are aware that IT security and OT Security are two different disciplines. IT security is what is done to make business IT systems secure (think banks, credit card unions or travel portals). OT stands for Operations Technology. Hence OT security refers to those systems that are used in manufacturing plants, storage terminals and similar to control processes and keep them safe. OT systems are primarily Industrial Automation and Control Systems (IACS for …

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