IEC 61511 SIL Determination

ABB Consulting
Course summary
2 days
1,220 GBP excl. VAT
Full time
Professional Training
Next available date: 09/02/2022 - Warrington
Course Dates
Online courses
1,220 GBP

1,220 GBP

Course description

IEC 61511 SIL Determination

A practical training course in the appreciation of SIL Determination to the technical requirements of IEC 61511.

Industry today relies upon safety systems to maintain and protect operating assets. Businesses seek to maintain operating effectiveness and reduce spurious trips whilst achieving a safety target appropriate to the circumstances. Fundamental to this process is the determination and implementation of the safety requirements for the safety system. From the IEC 61511 standards, the Safety Integrity Level (SIL) is fundamental in ensuring a safety related system satisfactorily performs the required safety functions under all stated conditions within a defined time period.

It is an assessment of the risk reduction required to give a tolerable level of risk. Inappropriate SIL determination can affect the safety integrity of the asset protection envelope and may in some cases place the asset integrity under threat. In addition to this, unnecessary spend in capital and operational budgets can be incurred. In contrast, properly defined SILs allow for significant cost improvements to be achieved in both Greenfield and Brownfield operating environments. Asset operational effectiveness is ensured by periodic testing of safety instrumented functions to maintain SIL performance and optimise the cost of ownership.

Suitability - Who should attend?

The course will be of benefit to all managers and engineers with a responsibility for the management and technical requirements of safety, health and environmental protective programmes.

Outcome / Qualification etc.

On completion of the course, you should be able to:

  • Understand the concepts of SIL determination and the principles of IEC 61511
  • Explain the key terms and concepts which underpin a systematic consideration process for safety and protective systems in respect to SIL
  • Understand the importance of SIL Determination
  • Determine where present practice is in line with the requirements of these standards and identify where improvements are necessary
  • Implement the SIL Determination methodology

This IEC 61511 SIL Determination training course is accredited by the IChemE and meets the requirements of Continuing Professional Development (CPD).

Training Course Content

Course structure and content

  • A two-day technical course aimed at responsible managers and engineers
  • Introduction to the standards and their background
  • Scope and applicability
  • Functional safety and IEC 61511 interpretation 
  • IEC 61511 basic principles refresher
  • The concept and importance of SIL determination
  • Risk concepts and criteria, risk aversion, tolerability including an exercise
  • Hazard identification, assessing frequency and consequence, modification list including an example
  • Risk graph approach with practical exercises
  • LOPA use with exercise examples
  • Fault trees and demand trees using further practical exercises
  • The impact of humans in the equation and sources of fault tree data
  • Dependency demands, layers etc. including a short exercise
  • The ‘pros and cons’ of the differing approaches to SIL determination
  • Introduction to the CASS scheme


This IEC 61511 SIL Determination training course is priced at £1,220 +VAT per delegate. For members of IChemE, there is a discounted priced of  £1,160 +VAT.

Choose to attend the course in person, or on-line via the streamed virtual classroom.

Enquire for in-house training options and group rates.

About provider

ABB UK Training courses

ABB Consulting technical training courses - providing in-depth knowledge on key engineering subject areas

ABB Consulting is part of the global ABB Group of companies currently operating in over 100 different countries. In the UK, ABB operates from more than 20 locations and is nationally renowned as a leader in power and automation technologies that...

Read more and show all courses with this provider

Request info

Fill out your details to find out more about IEC 61511 SIL Determination.

  Contact the provider

  Get more information

  Register your interest

Country *

Contact info

ABB Consulting

Daresbury Park
WA4 4BT Warrington

 Show phone number

Request information

Find out more about this IEC 61511 SIL Determination course - simply fill out your details:

Find a course for you!

  Read the course
 summary on this page

 Fill in your details and Request information

 Receive all the info you need

Find more courses here