IEC 61511 and IEC 61508

What is the difference between IEC 61511 and IEC 61508?

In the next few minutes of reading this you will understand the difference between IEC 61511 and IEC 61508. What is IEC 61511? IEC 61511 is the process industry standard for Functional Safety and Safety Instrumented Systems. This standard has been developed by the International Electrotechnical Commission and is used globally. Process industries are those industries that handle bulk materials (rather than discrete parts) and include the Oil & …

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What is an SRS?

What is an SRS (Safety Requirement Specification)? Why is it important?

What is a Safety Requirement Specification? (SRS for short)? A Safety Requirement Specification is one of the most important documents in any Safety Instrumented Systems project. This document forms the design basis of the Safety Instrumented System and has the detailed specifications of every Safety Instrumented Function (SIF) which comprises the SIS. When is the document made? If you refer to the Safety Lifecycle according to IEC 61511 (ISA …

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SCADA cyber security

Scada Cyber Security- Safeguarding Critical Industrial Systems

What is SCADA cyber security? SCADA cyber security refers to cybersecurity of Supervisory Control and Data Acquisition systems. These  cyber attacks on SCADA that can not only damage the system itself, but also lead to consequential damages to plant and equipment, as well as cause hardship to people due to contaminated water supplies, or failure of the electrical supply to homes, industries and businesses, or shortages of critical items …

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What is a Safety Instrumented Function?

What is a Safety Instrumented Function? One of the most fundamental questions related to Functional Safety and Safety Instrumented Systems is this-what is a safety instrumented function? Once you understand what a Safety Instrumented Function (SIF) means, you will immediately grasp the connection between safety instrumented functions and a Safety Instrumented System (SIS). But more on that later. Any plant or piece of equipment that has the potential to …

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