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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 …
Abhisam is pleased to announce that the Industrial Cybersecurity Training Course (Certified Industrial Cybersecurity Professional) has now an updated module on OT Security standards. The previous module titled IACS Security Standards has been thoroughly revised and has got several new sections that cover a lot about the parts of the ANSI/ISA/ IEC 62443 standard that have been published so far. What is the CICP program? Abhisam introduced the Industrial …
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 …
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 …
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 & …
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 …
We will understand ex zone meaning in this short introduction. What are Ex Zones? Many people refer to hazardous areas as Ex Zones. This is because only certified explosion protected equipment can be used in these areas. There are two main systems of classifying hazardous areas, one is the NEC (National Electrical Code) system that has Classes and Divisions and the IEC (International Electrotechnical Commission) system that uses Zones. …
What is Area Classification? Area Classification refers to classifying the hazardous areas of a plant into less hazardous and more hazardous. This classification is done using the IEC system that uses Zones (there are three Zones) or the NEC system that uses Divisions (there are two divisions). Further the areas are also classified on the basis of the materials stored, handled or processed there. Note: For a detailed understanding …
What is a Class 1 Division 2 area? You might have come across the term, Class I, Division 2 Hazardous Area. What does it mean? To understand this, we need to first understand two things- what is a hazardous area and what is a hazardous area classification. Note: To know in detail about Hazardous Area Classification, please take the Abhisam hazardous area classification course. To know the basics, please …
What is this free Hazardous Area training course? The Abhisam free Introduction to Hazardous Areas covers all the basics of hazardous areas. As you already know, hazardous areas are certain areas in plants and facilities that have a higher risk of fire or explosion due to the properties of materials stored or processed in these areas. Typically hazardous areas are found in oil and gas fields, petroleum refineries, underground …
