What is the difference between Verification and Validation in Functional Safety?

In this short guide, we will learn about two important concepts in the Functional Safety world, Verification and Validation and the difference between the two. What is Verification and Validation? Although colloquially these two words may sound similar, yet in the Functional Safety World, they are distinct concepts and different from each other, as different as chalk and cheese. To have a quick overview of this, you can watch …

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free ICS cyber security webinar

Introduction to Industrial Cybersecurity and IEC 62443 webinar

Industrial Cybersecurity webinar series Here’s an interesting piece of industrial cyber security news for you! Abhisam is pleased to announce a free series of industrial cyber security webinars  in the new year 2023. The “Introduction to Industrial Cybersecurity and IEC 62443” webinar, is a primer for anybody who wishes to know more about securing their Industrial Automation, Control and Safety Systems from cyber threats. Note: For a comprehensive certification …

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Functional Safety Industrial Cybersecurity

How Bad Industrial Cybersecurity degrades Functional Safety to being ineffective

Functional Safety and Industrial Cybersecurity- what’s the connection? In this short explanatory white paper, we will discuss how a bad Industrial cybersecurity posture can degrade Functional Safety to be almost ineffective, in protecting assets, people and the environment. Thus having proper Industrial Cybersecurity is a pre-requisite to having proper Functional Safety. What is Functional Safety all about? Functional Safety is a specialized domain within the Safety world, which deals …

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Proof Testing Safety Instrumented Systems

Proof Testing Safety Instrumented Systems

In this short guide we will learn something about proof testing Safety Instrumented Systems. What is a Proof Test of a Safety Instrumented System? Proof testing is the process by which the end user actually tests whether the Safety Instrumented System is actually working as intended. A Proof test has to be carried out for every Safety Instrumented Function (SIF for short). For example, if a SIF is supposed …

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What is ISA S84

What is the ANSI ISA S84 Standard? Is it a legal requirement?

In this short guide, we will take a look at the ANSI ISA S84 standard. What is ISA S84.01? This is the Functional Safety standard published by ISA (International Systems and Automation Society)’s S 84 committee. This is applicable to functional safety in the process industries. The standard was initially published as ANSI/ISA S84.01:1996 and was recognized by OSHA as a “generally accepted good engineering practice” via their letter …

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Safety Instrumented System Requirements

Safety Instrumented System Requirements

In this small guide we will understand Safety Instrumented System requirements. But first we answer some basic questions such as, What is a Safety Instrumented System? The simplest explanation of a Safety Instrumented System (SIS for short) is ” a system comprised of active elements such as sensors, logic solvers and actuators, working together as a system, which acts to reduce the risk of an unwanted event in a …

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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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Safety Instrumented Systems IEC 61511

Safety Instrumented Systems IEC 61511

Safety Instrumented Systems (SIS for short) that are used in the process industry sector, such as Oil and Gas platforms, Petroleum refineries, chemical manufacturing plants, pulp and paper, fossil fuel power generation plants and so on generally comply with the international standard IEC 61511.  This standard, published by the International Electrotechnical Commission (IEC) is the most widely used standard all over the world for building and maintaining SIS in …

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Functional Safety Training in India

Functional Safety Training in India at Baker Hughes

Functional Safety Training in India After a gap of two years, Abhisam has restarted Functional Safety Training in India. Recently, Abhisam conducted the Abhisam Functional Safety, SIL & SIS Cybersecurity (Level 1) workshop for engineers of Baker Hughes at their Mumbai office. About Baker Hughes Baker Hughes is a leading Energy Technology company in the world. For more than a century Baker Hughes inventions have revolutionized the world of …

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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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