SIL Verification Calculations Training

By the end of this course, participants will be able to: 

• Analyze any system technology and configuration to see if it will meet the required SIL 
• Determine if existing systems are safe enough (or whether they need to be upgraded) and whether proposed systems will meet the performance requirements 
• Explore the LOPA 
• Determine the optimum manual test interval for any system, saving your company time and money by not over- or under-testing systems 
• Verify the SRS. 
• Understand the requirements for verifying the hardware design. 
• Understand the essentials of verifying application programs and device configuration. 
• Select compliant hardware. 
• Understand what to look for in the certificate, the safety manual and the report to the certificate. 
• Verify the results of the FAT and SAT (validation). 
• Judge if the safety instrumented function meets the requirements of IEC 61511 and IEC 61508. 
• Calculate the PFDavg and PFH of the safety functions. 
• Document your verification activities such that the results can be assessed and perhaps certified. 

• System Modeling/Analysis Hands-On Advanced Examples 
  • Multiple Examples with Different Field Device Technologies 
  • Configurations 
  • Diagnostic Levels 
  • Test Intervals 
  • Common Cause Factors 
  • Imperfect Manual Testing 
• Detailed Design Topics 
  • Fault tolerance 
  • Safe failure fraction 
  • Diagnostic coverage 
  • Confidence limits 
  • System response to faults 
  • Using devices for control and safety 
  • Non-fail-safe design requirements 
  • Interface requirements 
  • Introduction to SIL Verification 
  • The safety function 
  • Safety requirements specification 
  • Architecture and hardware 
  • PFDavg and PFH calculations 
  • Introduction to application program and device configuration verification 
  • Basic safety & user documentation 
  • Validation (FAT and SAT) 
  • SIL Verification  
  • SIL verification software 

The course consists of multiple application exercises of safety integrity level selection 

Students are encouraged to bring their own examples to cover in class 

Module 1: Introduction 

In this module we give a short introduction into safety instrumented functions and the role they play in terms of layers of production. Furthermore, we address the rules that apply to SIFs. 

Key topics:

• We need safe processes
• Layers of protection philosophy 

• Importance of safety instrumented systems 
• SIS and SIF 
• What safety functions should (not) do 
• The rule book
• What matters 

 Module 2: Introducing SIL Verification 

In this module we explain what SIL Verification is, and what it is not. We clarify a few terms, including terms used in industry that are not used in the IEC 61511 standard. In the end you will understand how they relate together. 

Key topics: 

• The safety life cycle and the work 
• Verification and assessment 
• SIL verification 
• SIL assessment 
• SIL certification 
• Typical SIL verification activities
• Functional safety management 

Module 3: Verifying the Safety Instrumented Function 

Module 3 is where the actual verification work starts. We start with the most fundamental verification activity and that is the verification of the defined safety instrumented function 

Key topics: 

• Defining the SIF 
• No SIF, No SIL verification 
• About SIF description 
• The S.L.A.T.S. concept 
• Good examples 

Module 4: Verifying the Safety Requirements Specification 

Once the SIF is clearly defined the safety requirements can be defined. In this module you learn how and what you need to verify when you verify the SRS. 

Key topics: 

• Projects fail everywhere 
• Requirements versus specification 
• The need for safety requirements 
• The need for SMART requirements 
• Attributes of SMART requirements 
• What is an SRS
• Overview of requirements 
• The role of a cause and effect diagram 
• Verification of an SRS 

Module 5: Verifying the Hardware 

Based on the SRS safety devices are selected and bought that will eventually implement the SIF. In this module you learn how to verify that safety equipment is actually SIL compliant. 

Key topics: 

• Verifying the hardware 
• How to select SIL compliant devices 
• When is a device SIL compliant 
• Three compliance routes 
• Full compliance route 
• How to read a certificate 
• Proven in use route 
• Prior use route 
• Verification of devices 

Module 6: Verifying the Architecture 

The SIL compliant devices are used to build the architecture of the SIF. But there are rules for building the architecture. In this module you learn how to verify the architecture according to IEC 61508 and IEC 61511 rules. 

Key topics: 

• Subsystems 
• Three architectural constraints options 
  • Option 1 - IEC 61508 Full compliance 
  • Option 1 - Diverse solutions 
  • Option 2 - IEC 61508 Proven in use 
  • Option 3 - IEC 61511 Prior use 
• Architectural constraints not met? 
• Verifying architectures 

Module 7 - Performing or reviewing the PFDavg and PFH calculations 

Only after the architecture has been decided and the devices have been selected is it possible to perform a PFD calculation. In this module we teach you how to verify the PFD calculation. Or how to perform the calculation yourself, which then needs to be verified. We will give a demonstration of our online PFD calculation tool as well. 

Key topics: 

• Why the PFDavg/PFH calculation? 
• SIL target 
• Risk reduction target 
• How to calculate PFDavg or PFH 
• Simplified equations 
• PFDavg and PFH equations 
• 6 Steps to make a calculation 
• Verifying calculations 
• What to do if simplified equations do not work 

Module 8: Verifying the Application Program 

The application program is at the core of each SIF. In the industry the application program is the least verified topic and the least understood topic. In this module we teach you what to pay attention to and how to verify the application program. 

Key topics: 

• Verifying the software 
• Embedded, application and utility software 
• Application program safety requirements specification 
• General application program requirements 
• Application program design requirements 
• Application program implementation requirements 
• Previously developed functions 
• Application program verification requirements 
• Modifications 
• Parametrisation 
• Verification application programs 

Module 9: Basic Safety and User Documentation 

In this module we teach you how to verify basic safety properties so that the end-user gets a SIF that works in its intended environment. Furthermore, the end-user gets a new SIF and does not know how it works. We teach you the content and how to verify the user documentation. 

Key topics: 

• Functional safety versus basic safety 
• Basic safety parameters 
• Functional safety versus the user 
• User/safety manuals 
• SIF/SIS manual 
• Verification manuals 

Module 10: Validation 

Last but not least we need to verify the FAT, iFAT and SAT. In the module we teach you the difference between the different validation tests and how to verify them 

Key topics: 

• Common validation tests 
• How about pre-FAT 
• The validation verification objective 
• (integrated) Factory acceptance testing 
• Verifying the (i)FAT 
• SAT versus (i)FAT 
• SAT verification 

Module 11: Case Studies in SIL Verification 

• Real-world examples of successful SIL verification 
• Lessons learned and best practices from industry applications 

This course is ideal for: 

• Process Safety Personnel 
• Control System Engineers 
• Project Managers in Safety-Critical Industries 
• Anyone involved in the assessment of functional safety systems 

• Basic knowledge of functional safety concepts.
• Familiarity with relevant industry standards will enhance the learning experience.

• Gain specialized expertise in SIL verification, enhancing your professional qualifications.
• Improve your ability to ensure compliance with safety integrity standards.
• Strengthen career prospects in safety-critical and regulated fields.
• Contribute to safer, more reliable operational systems within your organization.

1. When can I get the certificate?
successful completion certificate will be issued after completion of examination successfully.

2. When can I get the training material and invite?
One day before the commencement of the training program.

3. How do I pay the fees for training and examination?
Online or Offline mode.