Safety Instrumented Systems | Training |Certification

Get certified as a Safety Instrumented Systems Professional, by taking this easy, online, self-paced, software based training course. 

We call it an XPRTU,  as it it makes you an expert.

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You are well aware of the role of Functional Safety and Safety Instrumented Systems (SIS), in protection of assets and people. In recent years, there have been extensive studies on the best ways of making our process plants safer and the conclusion is, that by just doing one thing right, which is -increasing the reliability of the Safety related Instrumentation and Control systems in a plant,  we can make these plants much safer. It is not enough for automation & control professionals to know about just process control systems or instrumented systems, you need  to know about Safety Instrumented Systems too. Taking this Abhisam Safety Instrumented Systems training course is by far the fastest and easiest way of learning SIS online and getting certified.

Key Benefits of the Course

Everything that you need to know about Safety Instrumented Systems -in one course!

All the following topics are included. No other course out there covers all of this, at this price! Everything is explained in a very easy to understand manner. Examples from real life situations in plants and facilities.

  • Introduction to SIS
  • Hazard and Risk Analysis
  • Failures & Reliability
  • Safety Integrity Level (SIL)
  • SIS Standards
  • SIS in practice
  • SIS Testing and Maintenance

So what are you waiting for? Get this XPRTU software now, access it either online or as a Download.

Get Certified as a SIS Professional! Earn an electronic badge that you can display online

Abhisam Safety Instrumented Systems Certificate

Abhisam Safety Instrumented Systems Professional

Customer Reviews


“I have worked in the International Oil and Gas Industry as a technical instructor for more than thirty years. I have both used and recommended the products of Abhisam. I recommend them highly to all engineers and technicians in our industry. No praise is too great!!
John Longden
GCGI LCGI. Senior Trainer
Petroleum Training Institute, UK


I am working in one of the world’s leading EPC companies, engaged in the Oil & Gas industry. I have purchased the Safety Instrumented Systems, Hazardous Area Instrumentation e-learning courses and Hazardous Area Classification. All of them are excellently crafted, the best available online, with excellent support via email.
I appreciate the good work done by Abhisam and hope that they do come out on more such courses.
D. Jha, Engineers India Ltd

New Delhi, India

Learners from leading companies have taken this course and got certified

The Abhisam Safety Instrumented Systems course has been taken by hundreds of learners from all over the world. They work as engineers, managers, executives, trainers and consultants for leading companies around the world.  Here’s a sample of the marquee companies who have used this course to train their learners.

Note: All logos belong to their respective owners.

Choose from any of the versions.

Scroll below to see complete contents.


For one learner
$ 699
  • Course Duration: 40 hours of self paced learning (Earn 40 PDH)
  • Access the course online 24/7 via any device for one year
  • Exam & Certification for one learner
  • Lifelong Valid Certificate


For one learner
$ 799
  • Everything in Standard plus
  • Download course to any Windows 10 PC
  • 3 year license

Get Trial Course Access to all Abhisam courses, including this Safety Instrumented Systems course for $7. You will NOT be billed automatically after trial ends.

Table of Contents
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MODULE 1- Introduction to SIS

  • What are Safety Instrumented Systems?

  • Basic Ideas about SIS

  • Functional Safety

  • Instrumented Systems & Safety Instrumented Systems-1

  • BPCS (Basic Process Control System)

  • Basic Process Control System and Safety Instrumented System

  • Safety Instrumented Function (SIF)

  • Emergency Shutdown Systems

  • Need for a separate Safety Instrumented System

  • Simulation exercise

  • Learnings from the exercise

  • Typical architecture (including sensors logic solver and final control element)

  • Integrated Basic Process Control System & Safety Instrumented System

  • Examples

  • Safety PLCs (Safety Logic Solver) & General Purpose Programmable Logic Controllers

  • BPCS and SIS

  • Differences  between the Basic Process Control System and the Safety Instrumented System

  • Q1

  • Q2

  • Q3

  • Q4

MODULE 2 – Hazards, Risks & their analysis

  • Hazards & Risks

  • Types of hazards- Fire & Explosions

  • Types of hazards-Toxic Material

  • The Safety Lifecycle

  • Steps in analysis

  • Preliminary Hazard Analysis



  • QRA

  • Consequence Analysis

  • Risk

  • Risk Example

  • Risk Reduction

  • The ALARP principle

  • Risk Reduction in process plants

  • Risk Reduction explained

  • Risk reduction using a Safety Instrumented Function

  • Layers of Protection

  • Layers of Protection in the process industries

  • Preventive & Mitigative layers

  • Safety Requirement Specification

  • SRS Importance

  • SRS-Minimum Requirements

  • Q5

  • Q6

  • Q7
  • Q8

MODULE 3 – Failures & Reliability

  • Failures

  • Why Study Failures

  • Types of Failures

  • Random Failures

  • Systematic Failures

  • Random or Systematic

  • Common Cause Failures

  • CCF Example

  • Control of Failures

  • Avoidance of failures

  • Diversity

  • Dangerous & Safe failures

  • Safety Systems and Subsystems

  • Safe Failure Fraction

  • SFF Pie Chart

  • No Part & No Effect Failures

  • Easy SFF

  • SFF calculation example

  • SFF Manipulation

  • Proof Test Interval

  • Diagnostic Coverage

  • Reliability

  • Failure Rate

  • MTTF (Mean Time To Failure)

  • MTTR (Mean Time to Repair)

  • MTBF (Mean Time Between Failures)

  • Failure Data

  • Software Reliability & Fault injection

  • Reliability Block Diagrams

  • Redundancy and Reliability

  • Fault Tree Analysis

  • Fault Tree Analysis Example-1

  • FTA and RBD

  • Fault Tree Analysis Example-2

  • Fault Tree Analysis – Probabilities

  • Event Trees

  • Event Tree Components

  • Event Tree Analysis Example

  • Fail – Safe and Fail Danger modes

  • Failure Modes Effects and Diagnostic Analysis

  • FMEDA & Reports

  • How to use the FMEDA report

  • Example FMEDA report

  • Redundancy

  • Redundancy and Voting

  • Voting Systems 1oo1

  • Voting Systems 1oo2

  • Voting Systems 1oo2D

  • Voting Systems 2oo2

  • Voting Systems 2oo3

  • Spurious Trips

  • Concept of Demand

  • Demand in a plant

  • Low Demand & High Demand

  • Continuous Demand

  • PFD

  • PFDavg

  • Q9

  • Q10

  • Q11

  • Q12

MODULE 4 – Safety Integrity Level

  • Introduction to Safety Integrity Levels

  • What is a Safety Integrity Level (SIL)?

  • What  SIL is not

  • Safety Integerity Levels -SIL 1 to SIL 4

  • Is SIL applicable to me?

  • SIL Study

  • SIL for Demand Mode

  • SIL Caveat

  • Low Demand Mode

  • Safety Integrity Levels for Continuous / High Demand Mode

  • SIL Table for High Demand and Low Demand Modes
  • The Safety Integrity Level  process

  • Common SIL Questions

  • Systematic Capability

  • Concept of Element

  • Systematic Capability Synthesis

  • Synthesis of elements

  • Achieving Systematic Capability

  • Architectural Constraints

  • Introduction to Architectural Constraints

  • Target SIL-Qualitative & Quantitative methods

  • Risk Reduction Factor

  • Safety Availability and PFDavg

  • SIL calculation Example

  • SIL 4

  • Consequence Only Method

  • Hazard Matrix Method

  • Hazard Matrix Method – Example

  • Risk Parameter Graph

  • Calibrated Risk Graph

  • LOPA

  • Conducting a LOPA

  • LOPA Method

  • More about LOPA

  • LOPA Example

  • Target SIL & SIL verification

  • SIF design process

  • PFD of a simple loop

  • SIL verification example – 1

  • PFDavg-Complex Loops

  • Markov Modeling

  • Simplified Equations

  • Use of Simplified Equations

  • Architectural Constraints

  • Hardware Fault Tolerance

  • Type A subsystems

  • Type B subsystems

  • Which Architectural Constraints to follow?

  • Hardware Fault Tolerance – IEC61508

  • Architectural Constraints-IEC 61508

  • Architectural Constraints – Example

  • Architectural Constraints – IEC61511

  • Architectural Constraints- IEC 61511 Ed 2

  • Use IEC 61508 or IEC 61511 Constraints?

  • Proven in Use

  • Proven in Use & Prior Use

  • HFT example

  • Verification Calculation Procedure

  • Series and Parallel Architecture

  • Resolving a Series Parallel Architecture- Example

  • Verification Calc Example

  • Conclusion

  • Q13

  • Q14

  • Q15

MODULE 5 – SIS Standards

  • Introduction to Standards in SIS

  • AK 1 to AK 8

  • International Electrotechnical Commission Standards

  • IEC 61508

  • IEC 61508:2010

  • E/E/PE systems

  • Safety Lifecycle

  • IEC 61508-Safety Life Cycle

  • IEC 61511 – Basics

  • Relationship between IEC 61508 & IEC 61511

  • Which standard do I follow?

  • Certified Devices

  • Revisions-IEC 61508

  • No Part & No Effect

  • Architectural Constraints

  • Security

  • ISA S84 Background

  • ISA S84 Differences

  • IEC 61511

  • Functional Safety Management

  • Where to get standards

  • What standards apply to me?

  • Conclusion

  • Q16

  • Q17

  • Q18

Module 6-SIS in practice

  • Components of the Safety Loop

  • Types of logic Solvers

  • Hardwired logic solvers – Trip amplifiers

  • Hardwired logic solvers – Gates

  • Safety Relays – Electromechanical

  • Safety Relays – Electronic

  • Programmable Logic Solvers

  • Safety PLCs & General Purpose PLCs

  • Safety PLC Design Techniques

  • Safety PLCs & General Purpose PLCs

  • Fault Diagnostics

  • Safety Logic Solvers-Inputs

  • Safety Logic Solver-Processors

  • Safety Logic Solver-Outputs

  • Safety Logic Solver-Software

  • Safety Logic Solver-Software-Design

  • Safety Logic Solver – Voting architecture

  • Safety Logic Solver – Triple Modular Redundancy(TMR)

  • Safety Logic Solver – Quad Modular Redundancy(QMR)

  • Safety Logic Solver Interface to BPCS

  • Safety Networks

  • High Integrity Pressure Protection System – HIPPS

  • Conclusion

  • Q19

  • Q20

  • Q21

MODULE 7 – SIS Testing & Maintenance

  • Need for testing- Safe State and Unsafe state

  • Testing – Example

  • Breakup of failures

  • Testing the components of a SIS

  • Testing Sensors & Transmitters

  • Testing Logic Solvers

  • Testing valves

  • Valve Testing – Bypass method

  • Partial Stroke Testing – 1

  • Partial Stroke Testing – ISA method

  • Valve Testing- Mechanical Stoppers

  • Valve Testing – Smart Positioner method

  • PST-Advantages & Disadvantages

  • Testing and PFDavg

  • Security Assessment

  • Testing for Stuxnet

  • Conclusion

  • Q22

  • Q23

  • Q24

  • Conclusion


A Self assessment Tests is included in the modules.

Safety Instrumented Systems- Why are they important?

Companies have realized that negligence (or ignorance), in respect of an instrumented system and especially of a Safety Instrumented System can be really disastrous, literally. Look at just a few recent cases that have been listed below (scroll down to see).

caribbean petroleumIncident: Caribbean Petroleum, Puerto Rico, 2009– Accident caused due to non working of the overfill protection instruments (part of the Safety Instrumented System). A massive fire and explosion sent huge flames and smoke plumes into the air at the Caribbean Petroleum Corporation near San Juan, Puerto Rico. The resulting pressure wave damaged surrounding buildings and impacted moving vehicles. The final report into the incident was released by the US Chemical Safety Board and it was non working of the overfill protection system (part of the Safety Instrumented System).

Morgantown, North Carolina,USA, 2006
Explosion at a polymer manufacturing plant led to total damage of the facility, with a human fatality and several injuries. Investigations found out that a lack of process safety standards and non implementation of automatic interlock systems (in other words, logic solver of the Safety Instrumented Systems) as the root causes of the disaster.

 Buncefield, UK, 2005- non working of the Overfill prevention system (part of the Safety Instrumented System)
The Buncefield industrial disaster was one of the biggest disasters to strike the chemical and petrochemical industry in Europe in recent years. The blasts that occurred were so loud, they were heard as far away as France! (Buncefield is in the UK) The root cause was found out not because of the logic solver but due to a bypassed level switch (part of the Safety Instrumented System) on the site.

Of course, you agree, that safety instrumented systems are essential and are operational in many plants and facilities around the globe. But mere operation and existence of such a system, does not ensure, that it will always work as designed , is it not?

You need to know it in depth, to make it work for you.

To make it work for you, you need to know these systems thoroughly ( We mean not from a programming point of view but from a users point of view). You need to get trained in all the concepts and ideas, including applicable codes and standards, ( including international Standards for safety instrumented systems such as IEC 61508:2010 and IEC 61511:2016, ISA S84) plus good engineering practices of these critical  Systems. Note that here, when we refer to such systems, we also include Emergency Shutdown Systems (ESD), Safety Shutdown Systems, High Integrity Pressure Protection Systems (HIPPS) and all similar systems that are used to ensure the safe operation of plant and machinery, using highly reliable instruments, controllers, valves and other electrical and pneumatic/hydraulic elements and devices.

A SIS is of several safety instrumented functions, also known as SIFs. Many of these SIFs together form a SIS. Each SIS is therefore composed of several sensors, logic solvers and final control elements like actuators, control valves and dampers. However, the jargon associated with these sophisticated safety instrumented systems is so tedious and even confusing, that even experienced professionals cringe at the mention of Triple Modular Redundant, 2oo3 voting, SIL 3 or IEC 61508.

Does it really have to be this way? No! Not really.

Get immediate access to this easy learning program (that we call an XPRTU-since it makes you into an expert).

Learn everything, take an online exam and get your Certificate of Competency, alongwith an electronic badge that you can display online on places like LinkedIn. It is all included in one low price!

You can simply get access to this e-learning course and learn all about these systems, in the comfort of your home or office, in a very easy to understand manner. Simple and easy to learn, with several interactive animations and simulations, this is a great learning experience. 

Just get this interactive, self paced training course today and for a fraction of the price that you would otherwise pay for any other course, learn everything that you wanted to know about SIS (but didn’t know whom to ask). Note that this course is

NOT a Powerpoint Presentation

NOT an ebook

NOT a video of a guy speaking

It is a comprehensive, software based learning program that combines interactive animations and simulations, real life examples & situations from real plants and facilities, an explanation of all difficult to understand terms in very easy language, a self assessment test and much more. It is a unique learning experience and we daresay that it is the only such program today in the world.

You can get this excellent, self paced, e-learning software based training course from Abhisam and be assured that

a) You will get instant access within minutes when you click the Buy button below and process your payment

b) You will get an easy learning experience due to the extensive graphics, animations, real life examples and situations, calculations, videos, assessments in the course, which has been created by Abhisam, pioneers and global experts in technical e-learning

c) You can get certified as an Abhisam Safety Instrumented Systems professional at no extra charge with a lifelong valid Certificate . Also earn an electronic badge that you can display online on places such as LinkedIn.

d) Earn Professional Development Hours (40) for this course.

Free SIS information and Whitepapers

Safety Instrumented Systems white paper

Safety Instrumented Systems a life-cycle approach

Read why in case of Safety Instrumented Systems- a life-cycle approach works best.

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