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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 …

HAZOP Training in India

HAZOP Training in India Abhisam is pleased to announce that Instructor led training workshops on HAZOP, are being restarted from June 2022. Accordingly you can now easily get HAZOP Training in India via a traditional, classroom type workshop that gives a hands on experience in conducting a HAZOP Study. What is HAZOP? What is the full form of HAZOP? HAZOP is a Hazard and Risk Assessment technique used …

Doing a HAZOP Study? The three things you must consider

What is a HAZOP Study? HAZOP is an acronym for Hazard and Operability Study. It is one of the most popular hazard and risk assessment techniques used in industry and especially so the process industry (think Oil & Gas production, Petroleum refining, Chemical manufacturing, bulk pharmaceuticals manufacturing, Food & Beverage, Fossil Fuel power generation and so on), It is also very popular in industries like Mining and Metals processing, …

What is IEC 62443-2-4? Understand it easily

Abhisam is pleased to announce that a new module on understanding IEC 62443-2-4 is now a part of the Abhisam Industrial Cybersecurity training course (Professional Version). What is IEC 62443-2-4? As you probably know, the IEC 62443 series of standards is developed jointly by ISA (International Society of Automation) and IEC (International Electrotechnical Commission), to provide guidance for implementing Industrial Cybersecurity. The term is synonymous with OT Security (Operational …

Log4j vulnerability and ICS security

As you may already be aware, a new critical remote code execution vulnerability (CVE-2021-44228) affecting Apache Log4j software library versions 2.0-beta9 to 2.14.1 has been discovered. What is the Log4j vulnerability? Log4j is used in many websites, consumer and enterprise services and applications—as well as in operational technology products, which includes even Industrial Control Systems such as DCS, SIS, PLC, SCADA, Process Historians and similar hosts and controllers. For …

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 …

Industrial cyber security Lifecycle- top 10 controls to secure your IACS

The Abhisam Industrial Cyber Security Lifecycle shows the top 10 controls needed to achieve robust cyber security for your Industrial Automation, Control and Safety System (IACS). IACS is a broad term for control and automation systems such as DCS (Distributed Control Systems), PLC (Programmable Logic Controllers), SCADA (Supervisory Control and Data Acquisition Systems), SIS (Safety Instrumented Systems), HIPPS (High Integrity Pressure Protection Systems), BMS (Burner Management Systems) and others. …

Safety Instrumented Systems- Design

Many process plants handle large amounts of hazardous materials (including flammable, explosive or toxic chemicals) at high temperatures and pressures (or in vacuum conditions)via complex processes. Hence there is a risk that there could be a disaster if something goes wrong and we could have fires, explosions and toxic chemical releases that can harm people and the environment. These incidents also damage assets and cause large scale destruction. In …

Safety Instrumented Systems- a Life-cycle approach works best

What are Safety Instrumented Systems? Safety Instrumented Systems are automation systems that kick into action when some deviation from the normal operating parameters has the potential to trigger an unwanted incident. These include both (relatively) simple systems like OPS (overfill prevention systems), that prevent overfilling a storage tank by sensing the high level and automatically stopping the inlet flow on high level, as well as more complex systems such …

IEC TR 61511-4:2020- Competency Management Requirements

What is IEC TR 61511-4: 2020? This is the latest publication in the IEC 61511 (Functional Safety – safety instrumented systems for the process industry sector) series. It is a Technical Report which gives explanations for updates to the various clauses in the latest edition of IEC 61511. According to the IEC website this technical report: • specifies the rationale behind all clauses and the relationship between them, • …